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Page Query Boss

Build complex nested queries containing multiple fields and pages and return an array or JSON. This is useful to fetch data for SPA and PWA.

You can use the Module to transform a ProcessWire Page or PageArray – even RepeaterMatrixPageArrays – into an array or JSON. Queries can be nested and contain closures as callback functions. Some field-types are transformed automatically, like Pageimages or MapMarker.

Installation

Via ProcessWire Backend

It is recommended to install the Module via the ProcessWire admin "Modules" > "Site" > "Add New" > "Add Module from Directory" using the PageQueryBoss class name.

Manually

Download the files from Github or the ProcessWire repository: https://modules.processwire.com/modules/page-query-builder/

  1. Copy all of the files for this module into /site/modules/PageQueryBoss/
  2. Go to “Modules > Refresh” in your admin, and then click “install” for the this module.

Module Methods

There are two main methods:

Return query as JSON

$page->pageQueryJson($query);

Return query as Array

$page->pageQueryArray($query);

Building the query

The query can contain key and value pairs, or only keys. It can be nested and 
contain closures for dynamic values. To illustrate a short example:

// simple query:
$query = [
	'height',
	'floors',
];
$pages->find('template=skyscraper')->pageQueryJson($query);

Queries can be nested, contain page names, template names or contain functions and ProcessWire selectors:

// simple query:
$query = [
	'height',
	'floors',
	'images', // < some fileds contain default sub-queries to return data
	'files' => [ // but you can also overrdide these defaults:
		'filename'
		'ext',
		'url',
	],
	// Assuming there are child pages with the architec template, or a
	// field name with a page relation to architects
	'architect' => [ // sub-query
		'name',
		'email'
	],
	// queries can contain closure functions that return dynamic content
	'querytime' => function($parent){
		return "Query for $parent->title was built ".time();
	}
];
$pages->find('template=skyscraper')->pageQueryJson($query);

Keys:

  1. A single fieldname; height or floors or architects 
    The Module can handle the following fields:

    • Strings, Dates, Integer… any default one-dimensional value
    • Page references
    • Pageimages
    • Pagefiles
    • PageArray
    • MapMarker
    • FieldtypeFunctional
  2. A template name; skyscraper or city

  3. Name of a child page (page.child.name=pagename); my-page-name
  4. A ProcessWire selector; template=building, floors>=25

  5. A new name for the returned index passed by a # delimiter:

     // the field skyscraper will be renamed to "building":
     $query = ["skyscraper`#building`"]

     

Key value pars:

  1. Any of the keys above (1-5) with an new nested sub-query array:

    $query = [
    	'skyscraper' => [
    		'height',
    		'floors'
    	],
    	'architect' => [
    		'title',
    		'email'
    	],
    ]

     

  2. A named key and a closure function to process and return a query. The closure gets the parent object as argument:

    $query = [
    	'architecs' => function($parent)
    		{
    			$architects = $parent->find('template=architect');
    			return $architects->arrayQuery(['name', 'email']);
    			// or return $architects->explode('name, email');
    		}
    ]

Real life example:

$query = [
	'title',
	'subtitle',
	// naming the key invitation
	'template=Invitation, limit=1#invitation' => [
		'title',
		'subtitle',
		'body',
	],
	// returns global speakers and local ones...
	'speakers' => function($page){
		$speakers = $page->speaker_relation;
		$speakers = $speakers->prepend(wire('pages')->find('template=Speaker, global=1, sort=-id'));

		// build a query of the speakers with
		return $speakers->arrayQuery([
			'title#name', // rename title field to name
			'subtitle#ministry', // rename subtitle field to ministry
			'links' => [
				'linklabel#label', // rename linklabel field to minlabelistry
				'link'
			],
		]);
	},
	'Program' => [ // Child Pages with template=Program
		'title',
		'summary',
		'start' => function($parent){ // calculate the startdate from timetables
			return $parent->children->first->date;
		},
		'end' => function($parent){ // calculate the endate from timetables
			return $parent->children->last->date;
		},
		'Timetable' => [
			'date', // date
			'timetable#entry'=> [
				'time#start', // time
				'time_until#end', // time
				'subtitle#description', // entry title
			],
		],
	],
	// ProcessWire selector, selecting children > name result "location"
	'template=Location, limit=1#location' => [
		'title#city', // summary title field to city
		'body',
		'country',
		'venue',
		'summary#address', // rename summary field to address
		'link#tickets', // rename ticket link
		'map', // Mapmarker field, automatically transformed
		'images',
		'infos#categories' => [ // repeater matrix! > rename to categories
			'title#name', // rename title field to name
			'entries' => [ // nested repeater matrix!
				'title',
				'body'
			]
		],
	],
];

if ($input->urlSegment1 === 'json') {
	header('Content-type: application/json');
	echo $page->pageQueryJson($query);
	exit();
}

Module default settings

The modules settings are public. They can be directly modified, for example:

$modules->get('PageQueryBoss')->debug = true;
$modules->get('PageQueryBoss')->defaults = []; // reset all defaults

Default queries for fields:

Some field-types or templates come with default selectors, like Pageimages etc. These are the default queries:

// Access and modify default queries: $modules->get('PageQueryBoss')->defaults['queries'] …
public $defaults = [
	'queries' => [
		'Pageimages' => [
			'basename',
			'url',
			'httpUrl',
			'description',
			'ext',
			'focus',
		],
		'Pagefiles' => [
			'basename',
			'url',
			'httpUrl',
			'description',
			'ext',
			'filesize',
			'filesizeStr',
			'hash',
		],
		'MapMarker' => [
			'lat',
			'lng',
			'zoom',
			'address',
		],
		'User' => [
			'name',
			'email',
		],
	],
];

These defaults will only be used if there is no nested sub-query for the respective type. If you query a field with complex data and do not provide a sub-query, it will be transformed accordingly:

$page->pageQueryArry(['images']);

// returns something like this
'images' => [
	'basename',
	'url',
	'httpUrl',
	'description',
	'ext',
	'focus'=> [
		'top',
		'left',
		'zoom',
		'default',
		'str',
	]
];

You can always provide your own sub-query, so the defaults will not be used:

$page->pageQueryArry([
	'images' => [
		'filename',
		'description'
	],
]);

Overriding default queries:

You can also override the defaults, for example

$modules->get('PageQueryBoss')->defaults['queries']['Pageimages'] = [
	'basename',
	'url',
	'description',
];

Index of nested elements

The index for nested elements can be adjusted. This is also done with defaults. There are 3 possibilities:

  1. Nested by name (default)
  2. Nested by ID
  3. Nested by numerical index

Named index (default):

This is the default setting. If you have a field that contains sub-items, the name will be the key in the results:

// example
$pagesByName = [
	'page-1-name' => [
		'title' => "Page one title",
		'name' => 'page-1-name',
	],
	'page-2-name' => [
		'title' => "Page two title",
		'name' => 'page-2-name',
	]
]

ID based index:

If an object is listed in $defaults['index-id'] the id will be the key in the results. Currently, no items are listed as defaults for id-based index:

// Set pages to get ID based index:
$modules->get('PageQueryBoss')->defaults['index-id']['Page'];
// Example return array:
$pagesById = [
	123 => [
		'title' => "Page one title",
		'name' => 123,
	],
	124 => [
		'title' => "Page two title",
		'name' => 124,
	]
]

Number based index

By default, a couple of fields are transformed automatically to contain numbered indexes:

// objects or template names that should use numerical indexes for children instead of names
$defaults['index-n'] => [
	'Pageimage',
	'Pagefile',
	'RepeaterMatrixPage',
];

// example
$images = [
	0 => [
		'filename' => "image1.jpg",
	],
	1 => [
		'filename' => "image2.jpg",
	]
]

Tipp: When you remove the key 'Pageimage' from $defaults['index-n'], the index will again be name-based.

 

Help-fill closures & tipps:

These are few helpfill closure functions you might want to use or could help as a
starting point for your own (let me know if you have your own):


Get an overview of languages:

    $query = ['languages' => function($page){
        $ar = [];
        $l=0;
        foreach (wire('languages') as $language) {
            // build the json url with segment 1
            $ar[$l]['url']= $page->localHttpUrl($language).wire('input')->urlSegment1;
            $ar[$l]['name'] = $language->name == 'default' ? 'en' : $language->name;
            $ar[$l]['title'] = $language->getLanguageValue($language, 'title');
            $ar[$l]['active'] = $language->id == wire('user')->language->id;
            $l++;
        }
        return $ar;
    }];

Get county info from ContinentsAndCountries Module

Using the [ContinentsAndCountries Module](https://modules.processwire.com/modules/continents-and-countries/) you can extract iso
code and names for countries:

    $query = ['country' => function($page){
        $c = wire('modules')->get('ContinentsAndCountries')->findBy('countries', array('name', 'iso', 'code'),['code' =>$page->country]);
        return count($c) ? (array) $c[count($c)-1] : null;
    }];

Custom strings from a RepeaterTable for interface

Using a RepeaterMatrix you can create template string for your frontend. This is
usefull for buttons, labels etc. The following code uses a repeater with the
name `strings` has a `key` and a `body` field, the returned array contains the `key` field as,
you guess, keys and the `body` field as values:

    // build custom translations
    $query = ['strings' => function($page){
        return array_column($page->get('strings')->each(['key', 'body']), 'body', 'key');
    }];

Multilanguage with default language fallback

Using the following setup you can handle multilanguage and return your default
language if the requested language does not exist. The url is composed like so:
`page/path/{language}/{content-type}` for example: `api/icf/zurich/conference/2019/de/json`
 

    // get contenttype and language (or default language if not exists)
    $lang = wire('languages')->get($input->urlSegment1);
    if(!$lang instanceof Nullpage){
        $user->language = $lang;
    } else {
        $lang = $user->language;
    }

    // contenttype segment 2 or 1 if language not present
    $contenttype = $input->urlSegment2 ? $input->urlSegment2 : $input->urlSegment1;

    if ($contenttype === 'json') {
        header('Content-type: application/json');
        echo $page->pageQueryJson($query);
        exit();
    }

Debug

The module respects wire('config')->debug. It integrates with TracyDebug. You can override it like so:

// turns on debug output no mather what:
$modules->get('PageQueryBoss')->debug = true;

Todos

Make defaults configurable via Backend. How could that be done in style with the default queries?

Module in alpha Stage: Subject to change

This module is in alpha stage … Query behaviour (especially selecting child-templates, renaming, naming etc)  could change ;)

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@noelboss, this is BEAUTIFUL!!

Very easy to understand. I'm eager to play with it and create a front-end using Vuejs and another with Gatsbyjs.

Many thanks for this module!!

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2 minutes ago, Sergio said:

create a front-end using Vuejs

Thats what I built it for :)

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Wow, da hätt glaubs öpper gschaffed... trotz de Früehligs-Polle :-)

From just a very quick first glance, this looks really nice. I'm sure I'll install this when I have some spare time and play around with it.

I don't actually have a real use-case myself atm, but since we're experimenting with conversational interface stuff lately (chatbots etc.), Dialogflow Webhooks etc., this could come in very handy for REST/API-like scenarios.

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18 hours ago, kongondo said:

Looks great, thanks!

I've just had a quick look. Any reason why the module is autoload?

Thank you @kongondo :D No, no reason – I'm new to PW and Module development and had issues with Modules without autoload before – and the module I was taking clues from had autoload true as well. I probably have to look into it a bit more. Any good resources about that? Should I not use it?

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3 hours ago, Noel Boss said:

Thank you @kongondo :D No, no reason – I'm new to PW and Module development and had issues with Modules without autoload before – and the module I was taking clues from had autoload true as well. I probably have to look into it a bit more. Any good resources about that? Should I not use it?

You only use autoload if the module needs to load automatically when ProcessWire boots so that you can listen to every single request and typically attach hooks to some event of interest. Don't let this confuse you though. Modules can hook into events without being autoload modules. An example autoload module is Blog module's Publish Date. It listens to when Blog Posts are published and sets a publish date. As such, it needs to be auto-loaded.

Does your module need to boot with ProcessWire or does one call it when one needs it? If the latter, then it means presently, it is just loading and using up resources when it doesn't need to. Can your module work like this?

$pageQuery = $modules->get('PageQueryBoss');
$query = $pages->find('template=skyscraper');
$json = $pageQuery->pageQueryJson($query);

It doesn't seem to me like it needs to autoload, but I've only had a brief look, so I could be wrong.

You can read a bit more about autoload modules in the module class docs here.

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Thank you for the detailed response @kongondo ! The above code does not work, the plugin extends $page so you can directly call ‚pageQueryJson‘ on a Page or a PageArray you call it - altough you need to specify what results you‘d like to receive;

$json = $pages->find('template=skyscraper')->pageQueryJson(['title']);

from what you describe, it probably does not need to autoload :) I’ll change that with the next release. Thanks again!

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On 4/28/2018 at 5:22 PM, kongondo said:

@Noel Boss,

Looks great, thanks!

I've just had a quick look. Any reason why the module is autoload?

I have just released an updated version without autoload. I also added a few helpfull closures to the readme, as well as hook-able methods:

https://github.com/noelboss/PageQueryBoss#helpfull-closures--tipps

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On 4/29/2018 at 5:47 PM, Noel Boss said:

The above code does not work, the plugin extends $page so you can directly call ‚pageQueryJson‘ on a Page or a PageArray you call it - altough you need to specify what results you‘d like to receive;

Hi @Noel Boss,

In your case, if the module extends (not in a PHP technical sense) $page, then it will have to be an autoload module. Your module adds methods to the  Page and WireArray classes. Hence, if it is not an autoload module, I don't see how it will work just by doing this:

$json = $pages->find('template=skyscraper')->pageQueryJson(['title']);

You will definitely get a PHP error about Method PageArray::pageQueryJson does not exist etc.

Maybe I'm missing something. Did it work for you with the new changes? 

Sorry if I am taking your round in circles 😊.

 

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Hi @Noel Boss,

now I get exactly the problem 

Exception: Method PageArray::pageQueryJson does not exist or is not callable in this context

as @kongondo mentioned. I've tried a minimal version of the pageQueryBoss:

<?php namespace ProcessWire; 
  $query = [
      "title"
  ];
echo $pages->find('template=portal-entry')->pageQueryJson($query);

But still with this error. Setting autoload to true does not change anything...
Do you have any idea to solve this?

 

Many thanks in advance - for your module but also for your medium article!

 

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Oh, now I got it!
Setting module autoload and singular to true again and clearing all caches helped... 

Thanks for this great module!

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Perhaps I am missing something here, but where is the "singular" and "isAutoload" at for the module? I am running into the same issue that kongondo mentioned, but can not find anything to change.

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Hey Noel,

I just had a quick question for you regarding pageQueryBoss. I was just trying to get a simple example up and running (using the most up to date version),  I got it working by adding in autoload true to to the config. However, I am a bit stumped. I really need a query set up to return something like:
 

Parent Page
  - Grandchild Page
    - field
    - field
  - Grandchild Page
    - field
    - field
  - Grandchild Page
    - field
    - field

Though no matter what I try, I can not seem to wrap my ahead around how to return the desired result. 

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This looks very nice @Noel Boss,

is there a way to support repeater fields?

 

EDIT: Sorry for my silly question, found it in your docs.

This works for me:

$query = ['repeater' => function($page){
        return array_column($page->get('repeater')->each(['key', 'body']), 'body', 'key');

 

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Hi @Noel Boss

Thank you so much for the plugin! I'm still trying to figure out how to make it do precisely what I need it to do, so I just have a quick question about formatting. 

Basically I'm trying to get this kind of json output: 

[
  {
    "title": "Paul Rand",
    "year": [
      "1993"
    ],
    "authors": [
      "Abrams, Janet"
    ],
    "categories": [
      "Criticism",
      "Design",
      "Design Histories"
    ]
  }
]

But I'm getting this instead:

{
  paul-rand: {
    title: "Paul Rand",
    year: [
    "1993"
    ],
    authors: [
    "Abrams, Janet"
    ],
    categories: [
    "Criticism",
    "Design",
    "Design Histories"
    ]
  }
}

This is the query I'm currently using: 

header("Content-type: application/json");
$modules->get('PageQueryBoss')->debug = true;
$query = [
  'title',
  'year.title#year',
  'authors.title#authors',
  'categories.title#categories'
];
echo $pages->find('template=book, sort=authors.title')->pageQueryJson($query);

Is there some setting I'm missing, or is the problem with how I'm structuring the query?

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      https://gitlab.com/SkyLundy/fluency-processwire/-/issues
       
      Thank you! ¡Gracias! Ich danke Ihnen! Merci! Obrigado! Grazie! Dank u wel! Dziękuję! Спасибо! ありがとうございます! 谢谢你!

    • By jom
      Chäs & Co is a b2b cheese trader. They love good cheese and are proud of their excellent knowledge und connections to small cheese producers. They maintain a custom made database and used to copy/paste (!) the cheese infos to the former CMS (Contao). Since substituting the database with ProcessWire was no option, they export now the database to a csv file and import it to the new website (expanded version of module ImportPagesCSV).
      From there, the pw magic begins. The staff works with the admin interface: They search and find products in notime using the build-in search field (using cheese names or id. Using ids only possible by adding hook, see this forum thread). They generate price lists easily based on a template, providing checkboxes and option buttons for some restrictions, choose i.e. the cheese origin and price audience (all implemented as page selectors). By saving the page a PDF list gets generated (using mpdf, a php pdf library).
      The visitors can sort and filter the products using a form by shuffle.js. Product details are shown in a popup (fancybox). There's also the option for generating a nice pdf data sheet. No CSS framework being used.
      Other modules used: ProcessJumpLinks, ProcessProMailer, ProcessWireUpgrade.


    • By horst
      ---------------------------------------------------------------------------------------------------------------------------------
        when working with PW version 2.6+, please use Pim2, not Pim!
        read more here  on how to change from the older to the newer version in existing sites
      ---------------------------------------------------------------------------------------------------------------------------------
      PageImage Manipulator, API for version 1 & 2

      The Page Image Manipulator is a module that let you in a first place do ImageManipulations with your PageImages. - And in a second place there is the possibility to let it work on any imagefile that exists in your servers filesystem, regardless if it is a 'known PW-image'.

      The Page Image Manipulator is a Toolbox for Users and Moduledevelopers. It is written to be as close to the Core ImageSizer as possible. Besides the GD-filterfunctions it contains resize, crop, canvas, rotate, flip, sharpen, unsharpMask and 3 watermark methods.



      How does it work?

      You can enter the ImageManipulator by calling the method pim2Load(). After that you can chain together how many actions in what ever order you like. If your manipulation is finished, you call pimSave() to write the memory Image into a diskfile. pimSave() returns the PageImage-Object of the new written file so we are able to further use any known PW-image property or method. This way it integrates best into the ProcessWire flow.

      The three examples above put out the same visual result: a grayscale image with a width of 240px. Only the filenames will slightly differ.

      You have to define a name-prefix that you pass with the pimLoad() method. If the file with that prefix already exists, all operations are skipped and only the desired PageImage-Object gets returned by pimSave(). If you want to force recreation of the file, you can pass as second param a boolean true: pim2Load('myPrefix', true).

      You may also want to get rid of all variations at once? Than you can call $pageimage->pim2Load('myPrefix')->removePimVariations()!

      A complete list of all methods and actions are at the end of this post.
       
      You may also visit the post with tips & examples for users and module developers.


      How to Install
      Download the module Place the module files in /site/modules/PageImageManipulator/ In your admin, click Modules > Check for new modules Click "install" for PageImageManipulator Done! There are no configuration settings needed, just install and use it. Download    (version 0.2.0)
      get it from the Modules Directory History of origins

      http://processwire.com/talk/topic/3278-core-imagemanipulation/


      ----------------------------------------------------------------------------------------------------------


      Page Image Manipulator - Methods

      * pimLoad  or  pim2Load, depends on the version you use!

      pimLoad($prefix, $param2=optional, $param3=optional)
      param 1: $prefix - (string) = mandatory! param 2: mixed, $forceRecreation or $options param 3: mixed, $forceRecreation or $options return: pim - (class handle) $options - (array) default is empty, see the next method for a list of valid options! $forceRecreation - (bool) default is false It check if the desired image variation exists, if not or if forceRecreation is set to true, it prepares all settings to get ready for image manipulation
      -------------------------------------------------------------------

      * setOptions

      setOptions(array $options)
      param: $options - (array) default is empty return: pim - (class handle) Takes an array with any number valid options / properties and set them by replacing the class-defaults and / or the global config defaults optionally set in the site/config.php under imageSizerOptions or imageManipulatorOptions.

      valid options are:
      quality = 1 - 100 (integer) upscaling = true | false (boolean) cropping = true | false (boolean) autoRotation =true | false (boolean) sharpening = 'none' | 'soft' | 'medium' | 'strong' (string) bgcolor = (array) css rgb or css rgba, first three values are integer 0-255 and optional 4 value is float 0-1, - default is array(255,255,255,0) thumbnailColorizeCustom = (array) rgb with values for colorize, integer -255 - 255 (this can be used to set a custom color when working together with Thumbnails-Module)
        outputFormat = 'gif' | 'jpg' | 'png' (Attention: outputFormat cannot be specified as global option in $config->imageManipulatorOptions!) set {singleOption} ($value)
      For every valid option there is also a single method that you can call, like setQuality(90), setUpscaling(false), etc.
      -------------------------------------------------------------------

      * pimSave

      pimSave()
      return: PageImage-Object If a new image is hold in memory, it saves the current content into a diskfile, according to the settings of filename, imagetype, targetFilename and outputFormat. Returns a PageImage-Object!
      -------------------------------------------------------------------

      * release

      release()
      return: void (nothing) if you, for what ever reason, first load image into memory but than do not save it, you should call release() to do the dishes! 😉 If you use pimSave() to leave the ImageManipulator, release() is called automatically.
      -------------------------------------------------------------------

      * getOptions

      getOptions()
      return: associative array with all final option values example:
      ["autoRotation"] bool(true) ["upscaling"] bool(false) ["cropping"] bool(true) ["quality"] int(90) ["sharpening"] string(6) "medium" ["targetFilename"] string(96) "/htdocs/site/assets/files/1124/pim_prefix_filename.jpg" ["outputFormat"] string(3) "jpg" get {singleOption} ()
      For every valid option there is also a single method that you can call, like getQuality(), getUpscaling(), etc. See method setOptions for a list of valid options!
      -------------------------------------------------------------------

      * getImageInfo

      getImageInfo()
      return: associative array with useful informations of source imagefile example:
      ["type"] string(3) "jpg" ["imageType"] int(2) ["mimetype"] string(10) "image/jpeg" ["width"] int(500) ["height"] int(331) ["landscape"] bool(true) ["ratio"] float(1.5105740181269) ["bits"] int(8) ["channels"] int(3) ["colspace"] string(9) "DeviceRGB" -------------------------------------------------------------------

      * getPimVariations

      getPimVariations()
      return: array of Pageimages Collect all pimVariations of this Pageimage as a Pageimages array of Pageimage objects. All variations created by the core ImageSizer are not included in the collection.
      -------------------------------------------------------------------

      * removePimVariations

      removePimVariations()
      return: pim - (class handle) Removes all image variations that was created using the PIM, all variations that are created by the core ImageSizer are left untouched!
      -------------------------------------------------------------------
      * width

      width($dst_width, $sharpen_mode=null)
      param: $dst_width - (integer) param: $auto_sharpen - (boolean) default is true was deleted with version 0.0.8, - sorry for breaking compatibility param: $sharpen_mode - (string) possible: 'none' | 'soft' | 'medium' | 'strong', default is 'soft' return: pim - (class handle) Is a call to resize where you prioritize the width, like with pageimage. Additionally, after resizing, an automatic sharpening can be done with one of the three modes.
      -------------------------------------------------------------------

      * height

      height($dst_height, $sharpen_mode=null)
      param: $dst_height - (integer) param: $auto_sharpen - (boolean) default is true was deleted with version 0.0.8, - sorry for breaking compatibility param: $sharpen_mode - (string) possible: 'none' | 'soft' | 'medium' | 'strong', default is 'soft' return: pim - (class handle) Is a call to resize where you prioritize the height, like with pageimage. Additionally, after resizing, an automatic sharpening can be done with one of the three modes.
      -------------------------------------------------------------------

      * resize

      resize($dst_width=0, $dst_height=0, $sharpen_mode=null)
      param: $dst_width - (integer) default is 0 param: $dst_height - (integer) default is 0 param: $auto_sharpen - (boolean) default is true was deleted with version 0.0.8, - sorry for breaking compatibility param: $sharpen_mode - (string) possible: 'none' | 'soft' | 'medium' | 'strong', default is 'soft' return: pim - (class handle) Is a call to resize where you have to set width and / or height, like with pageimage size(). Additionally, after resizing, an automatic sharpening can be done with one of the three modes.
      -------------------------------------------------------------------

      * stepResize

      stepResize($dst_width=0, $dst_height=0)
      param: $dst_width - (integer) default is 0 param: $dst_height - (integer) default is 0 return: pim - (class handle) this performs a resizing but with multiple little steps, each step followed by a soft sharpening. That way you can get better result of sharpened images.
      -------------------------------------------------------------------

      * sharpen

      sharpen($mode='soft')
      param: $mode - (string) possible values 'none' | 'soft'| 'medium'| 'strong' return: pim - (class handle) Applys sharpening to the current memory image. You can call it with one of the three predefined pattern, or you can pass an array with your own pattern.
      -------------------------------------------------------------------

      * unsharpMask

      unsharpMask($amount, $radius, $threshold)
      param: $amount - (integer) 0 - 500, default is 100 param: $radius - (float) 0.1 - 50, default is 0.5 param: $threshold - (integer) 0 - 255, default is 3 return: pim - (class handle) Applys sharpening to the current memory image like the equal named filter in photoshop.
      Credit for the used unsharp mask algorithm goes to Torstein Hønsi who has created the function back in 2003.
      -------------------------------------------------------------------

      * smooth

      smooth($level=127)
      param: $level - (integer) 1 - 255, default is 127 return: pim - (class handle) Smooth is the opposite of sharpen. You can define how strong it should be applied, 1 is low and 255 is strong.
      -------------------------------------------------------------------

      * blur

      blur()
      return: pim - (class handle) Blur is like smooth, but cannot called with a value. It seems to be similar like a result of smooth with a value greater than 200.
      -------------------------------------------------------------------

      * crop

      crop($pos_x, $pos_y, $width, $height)
      param: $pos_x - (integer) start position left param: $pos_y - (integer) start position top param: $width - (integer) horizontal length of desired image part param: $height - (integer) vertical length of desired image part return: pim - (class handle) This method cut out a part of the memory image.
      -------------------------------------------------------------------

      * canvas

      canvas($width, $height, $bgcolor, $position, $padding)
      param: $width = mixed, associative array with options or integer, - mandatory! param: $height = integer, - mandatory if $width is integer! param: $bgcolor = array with rgb or rgba, - default is array(255, 255, 255, 0) param: $position = one out of north, northwest, center, etc, - default is center param: $padding = integer as percent of canvas length, - default is 0 return: pim - (class handle) This method creates a canvas according to the given width and height and position the memory image onto it.
      You can pass an associative options array as the first and only param. With it you have to set width and height and optionally any other valid param. Or you have to set at least width and height as integers.
      Hint: If you want use transparency with rgba and your sourceImage isn't of type PNG, you have to define 'png' as outputFormat with your initially options array or, for example, like this: $image->pimLoad('prefix')->setOutputFormat('png')->canvas(300, 300, array(210,233,238,0.5), 'c', 5)->pimSave()
      -------------------------------------------------------------------

      * flip

      flip($vertical=false)
      param: $vertical - (boolean) default is false return: pim - (class handle) This flips the image horizontal by default. (mirroring)
      If the boolean param is set to true, it flips the image vertical instead.
      -------------------------------------------------------------------

      * rotate

      rotate($degree, $backgroundColor=127)
      param: $degree - (integer) valid is -360 0 360 param: $backgroundColor - (integer) valid is 0 - 255, default is 127 return: pim - (class handle) This rotates the image. Positive values for degree rotates clockwise, negative values counter clockwise. If you use other values than 90, 180, 270, the additional space gets filled with the defined background color.
      -------------------------------------------------------------------

      * brightness

      brightness($level)
      param: $level - (integer) -255 0 255 return: pim - (class handle) You can adjust brightness by defining a value between -255 and +255. Zero lets it unchanged, negative values results in darker images and positive values in lighter images.
      -------------------------------------------------------------------

      * contrast

      contrast($level)
      param: $level - (integer) -255 0 255 return: pim - (class handle) You can adjust contrast by defining a value between -255 and +255. Zero lets it unchanged, negative values results in lesser contrast and positive values in higher contrast.
      -------------------------------------------------------------------

      * grayscale

      grayscale()
      return: pim - (class handle) Turns an image into grayscale. Remove all colors.
      -------------------------------------------------------------------

      * sepia

      sepia()
      return: pim - (class handle) Turns the memory image into a colorized grayscale image with a predefined rgb-color that is known as "sepia".
      -------------------------------------------------------------------

      * colorize

      colorize($anyColor)
      param: $anyColor - (array) like css rgb or css rgba - but with values for rgb -255 - +255,  - value for alpha is float 0 - 1, 0 = transparent  1 = opaque return: pim - (class handle) Here you can adjust each of the RGB colors and optionally the alpha channel. Zero lets the channel unchanged whereas negative values results in lesser / darker parts of that channel and higher values in stronger saturisation of that channel.
      -------------------------------------------------------------------

      * negate

      negate()
      return: pim - (class handle) Turns an image into a "negative".
      -------------------------------------------------------------------

      * pixelate

      pixelate($blockSize=3)
      param: $blockSize - (integer) 1 - ??, default is 3 return: pim - (class handle) This apply the well known PixelLook to the memory image. It is stronger with higher values for blockSize.
      -------------------------------------------------------------------

      * emboss

      emboss()
      return: pim - (class handle) This apply the emboss effect to the memory image.
      -------------------------------------------------------------------

      * edgedetect

      edgedetect()
      return: pim - (class handle) This apply the edge-detect effect to the memory image.
      -------------------------------------------------------------------

      * getMemoryImage

      getMemoryImage()
      return: memoryimage - (GD-Resource) If you want apply something that isn't available with that class, you simply can check out the current memory image and apply your image - voodoo - stuff
      -------------------------------------------------------------------

      * setMemoryImage

      setMemoryImage($memoryImage)
      param: $memoryImage - (GD-Resource) return: pim - (class handle) If you are ready with your own image stuff, you can check in the memory image for further use with the class.
      -------------------------------------------------------------------

      * watermarkLogo

      watermarkLogo($pngAlphaImage, $position='center', $padding=2)
      param: $pngAlphaImage - mixed [systemfilepath or PageImageObject] to/from a PNG with transparency param: $position - (string) is one out of: N, E, S, W, C, NE, SE, SW, NW,
      - or: north, east, south, west, center, northeast, southeast, southwest, northwest
      default is 'center' param: $padding - (integer) 0 - 25, default is 5, padding to the borders in percent of the images length! return: pim - (class handle) You can pass a transparent image with its filename or as a PageImage to the method. If the watermark is bigger than the destination-image, it gets shrinked to fit into the targetimage. If it is a small watermark image you can define the position of it:
      NW - N - NE | | | W - C - E | | | SW - S - SE  
      The easiest and best way I have discovered to apply a big transparency watermark to an image is as follows:
      create a square transparent png image of e.g. 2000 x 2000 px, place your mark into the center with enough (percent) of space to the borders. You can see an example here! The $pngAlphaImage get centered and shrinked to fit into the memory image. No hassle with what width and / or height should I use?, how many space for the borders?, etc.
      -------------------------------------------------------------------

      * watermarkLogoTiled

      watermarkLogoTiled($pngAlphaImage)
      param: $pngAlphaImage - mixed [systemfilepath or PageImageObject] to/from a PNG with transparency return: pim - (class handle) Here you have to pass a tile png with transparency (e.g. something between 150-300 px?) to your bigger images. It got repeated all over the memory image starting at the top left corner.
      -------------------------------------------------------------------

      * watermarkText

      watermarkText($text, $size=10, $position='center', $padding=2, $opacity=50, $trueTypeFont=null)
      param: $text - (string) the text that you want to display on the image param: $size - (integer) 1 - 100, unit = points, good value seems to be around 10 to 15 param: $position - (string) is one out of: N, E, S, W, C, NE, SE, SW, NW,
      - or: north, east, south, west, center, northeast, southeast, southwest, northwest
      default is 'center' param: $padding - (integer) 0 - 25, default is 2, padding to the borders in percent of the images length! param: $opacity- (integer) 1 - 100, default is 50 param: $trueTypeFont - (string) systemfilepath to a TrueTypeFont, default is freesansbold.ttf (is GPL & comes with the module) return: pim - (class handle) Here you can display (dynamic) text with transparency over the memory image. You have to define your text, and optionally size, position, padding, opacity for it. And if you don't like the default font, freesansbold, you have to point to a TrueTypeFont-File of your choice.
      Please have a look to example output: http://processwire.com/talk/topic/4264-release-page-image-manipulator/page-2#entry41989
      -------------------------------------------------------------------





      PageImage Manipulator - Example Output


    • By d'Hinnisdaël
      Format Datetime fields as Carbon instances.
      You can find the latest release and the complete readme on Github.
      Installation
      composer require daun/datetime-carbon-format Usage
      All Datetime fields will now be formatted as Carbon instances instead of strings. Some examples:
      // $page->date is a Datetime field // Output format: j/n/Y echo $page->date; // 20/10/2020 echo $page->date->add('7 days'); // 27/10/2020 echo $page->date->format('l, F j'); // Monday, October 20 echo $page->date->year; // 2020 echo $page->date->diffForHumans(); // 28 minutes ago Frontend only
      The ProcessWire admin seems to expect datetime fields to be strings. This module will only return Carbon instances on frontend page views.
      Date output format
      When casting a Carbon instance to a string (usually when outputting the field in a template), the field's date output format will be respected.
      Links
      GitHub • Readme • Carbon docs
       
       
      PS. I remember reading about a Carbon module in a recent newsletter, but couldn't find it anywhere. Was that you, @bernhard?
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