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Pia - Pageimage Assistant

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Pia - Pageimage Assistant

Hello, today I can tell you that Pia Ballerina want to assist you with Pageimages   pia-ballerina_titel.jpg
and that can become really helpful! :)
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Pia, in its current state, version 1.0.0, provides:

  • a GUI (the module config screen) for quick and easy changes to the sitewide Pageimage default options
     
  • an alternative way for calling the Pageimage resizing methods with PW selector strings
     
  • three new methods as shortcuts to the resizing functions
     
  • a new method called retinafy and its alias hiDPI, (introduced in version 0.2.0)

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2) Instead of ->width(), ->height(), ->size() you can call ->pia() now. With a PW selector string you tell Pia what image variation you want to have :
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$image->pia("width=100, quality=80, sharpening=medium")->url;

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If you want process ->width() just define width.
If you want process ->height() only define height.
If you want process ->size() just define width and height.
If you want process ->size() with equal values for width and height, just define only size, or use the alias square:
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$image->pia("width=480")->url;
$image->pia("height=320")->url;
$image->pia("width=400, height=300")->url;
$image->pia("size=350")->url;
$image->pia("square=350")->url;

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So, yes, - I see. Now you may think: "Ok, nice looking girl, - and she can dance very well, - but for what should it be good that she is involved here? My very old buddies width, height and size - and me, - we don't need any Ballerinas between us!"
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Yeah, I see what you mean. But this above is not what Pia is good for, this is just a little warming up for you. :)
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In some cases one need to specify more than just width and / or height. If it comes to that you need explicitly populated options with the individual pageimages, Pia will become faster and more comfortable at some point. Also the code is looking more readable with Pia, at least to me:
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// regular style #1:

$image->width(800, array("upscaling" => false, "cropping" => true, "quality" => 80, "sharpening" => "strong"));

// or regular style #2:

$options = array("upscaling" => false, "cropping" => true, "quality" => 80, "sharpening" => "strong");
$image->width(800, $options);

// now lets Pia dance:

$image->pia('width=800, upscaling=0, cropping=1, quality=80, sharpening=strong');

$image->pia('width=800, upscaling=off, cropping=on, quality=80, sharpening=strong');

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For me it is that not only Pia begin to dance, my fingers do so too when writing selector strings instead of the regular array code. :)
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Ok, last thing before we can go to stage: "You already may have noticed that Pia accepts few different values for boolean expression, yes?"

  • for TRUE you can write these strings: "1, on, ON, true, TRUE, -1"
  • for FALSE you may use one out of "0, off, OFF, false, FALSE"

Ready? Ok, lets go to stage.
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3) Pia provide three new methods as shortcuts. This means that when using one of the shortcuts you have pre-populated options, regardless of the sitewide default settings:

  • crop :: does what the name says
     
  • contain :: is equal to the regular method: ->size($width, $height, array("cropping" => false))
     
  • cover :: this, Pias third child, is a new kid on the block :)

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Let's have a closer look and compare it. We use Pias image from above as source for this example. (It's dimensions are 289 x 400 px)
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* crop

$image->crop('square=100'); 

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pia-ballerina_titel.100x100-piacrop.jpg    it is 100 x 100 px    and the name is:  pia-ballerina_titel.100x100-piacrop.jpg
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* contain

$image->contain('square=100');

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pia-ballerina_titel.100x100-piacontain.j    it is 73 x 100 px   and the name is:  pia-ballerina_titel.100x100-piacontain.jpg
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* cover

$image->cover('square=100'); 

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pia-ballerina_titel.100x139-piacover.jpg    it is 100 x 139 px   and the name is:  pia-ballerina_titel.100x139-piacover.jpg
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Ok, you got it?
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"Crop" crop out the area, "Contain" fits the image into the area, and "Cover" calculates the needed dimensions for the image so that the area is completly covered by it.
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Following is a link with lots of those crop-, contain-, cover- variations. I have stress-tested it a bit: much variations
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Later Additions:
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* contain with option weighten
Since version 0.0.6 contain can take an additional param called "weighten". (read more here)
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* retinafy
Since version 0.2.0 retinafy is added. It returns a markup string, e.g. a HTML img tag, where placeholders are populated with property values from the pageimage. Default properties are: URL, WIDTH, HEIGHT, DESCRIPTION. The method also can take an optional array with CustomPropertyNames. You also can use the alias HiDPI if you like. (read more here)

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You can get the module from the modules directory or from the repo on Github:
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git clone https://github.com/horst-n/PageimageAssistant.git your/path/site/modules/PageimageAssistant

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Bye! 
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pia-ballerina_outro.jpg

Classical ballet performance at the Aalto Theatre in Essen, in the context of the Red Dot Award ceremony 26 June 2007,
Act III, Sleeping Beauty, the wedding reception
Photos: Horst Nogajski - www.nogajski.de

 

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It is incredible how it is in this PW forum, You go to sleep, you wake up, turn the computer on, and you find another jewel! It is all around the globe so magic just never stops! It is like a new year every day with presents under the tree. Thank you, mr. Horst!

And something on the substance:

1) It would be usefull in many cases (at least for me) to have a 4th method, which would act like contain, but would fill with adjustable color spaces to the left and right (or to the up and down if it is horisontal) making the thumb a squre, but still containing the whole of the image. Like this:

post-2275-0-94617800-1416728404.jpg

2) Could you please write a bit about how you work with images. We now have options from you: pim and pia (not forgetting about core methods). How do they work together? Should we use both or just one of them and in what cases?

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It is incredible how it is in this PW forum, You go to sleep, you wake up, turn the computer on, and you find another jewel! It is all around the globe so magic just never stops! It is like a new year every day with presents under the tree. Thank you, mr. Horst!

So true.  :rolleyes: Thanks horst. Pia is one fine lady.

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On 11/23/2014 at 8:47 AM, Ivan Gretsky said:

1) It would be usefull in many cases (at least for me) to have a 4th method, which would act like contain, but would fill with adjustable color spaces to the left and right (or to the up and down if it is horisontal) making the thumb a squre, but still containing the whole of the image. Like this:

2) Could you please write a bit about how you work with images. We now have options from you: pim and pia (not forgetting about core methods). How do they work together? Should we use both or just one of them and in what cases?

thanks for the nice words.

1) unfortunately Pia only assist with preparing and delegating values to the images engines. She isn't able to process images by herself.

What you are requesting is "canvas", it is provided by Pim. I don't know yet if Pia dynamically should support shortcuts depending on other installed modules or not. It can become a bit confusing. On the other hand I see how comfortable it could be if Pia would assist here too.

2) I will do so when finding a bit time for it.

On 11/23/2014 at 4:54 PM, Peter Knight said:

So true.  :rolleyes: Thanks horst. Pia is one fine lady.

yes, she is! 

pia--one-fine-lady.jpg

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Updated to version 4

- I had to fix the forceNew option what may be used during site develope.

- also have changed a bit on the GUI: it detects if you have Fieldtype RangeSlider installed and uses that over a regular Integer Inputfield for Quality-Setting

If you are already using it, please update too.

Edited by horst
added change to version 4
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Hey horst - looks awesome, but I am running php 5.3.28 on my dev server (just to pick up on things like this) and get a parse error due to:

InputfieldRangeSlider::getModuleInfo()['version'] on line 345

Something like this takes care of it:

if($modules->isInstalled('InputfieldRangeSlider')) $rangeSliderInfo = InputfieldRangeSlider::getModuleInfo();
$hasSlider = $modules->isInstalled('InputfieldRangeSlider') && version_compare($rangeSliderInfo['version'], '1.0.4', '>=');
One minor typo while I think of it:
here you can set sitewide options, - this overrides the options from site/config.php
 
This is under the main config and also the advances section. As well as the missing "s", probably also don't need the comma and the hyphen.
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@Adrian: thanks for the feedback. Here she is a bit to modern I believe. I will change this soon! ^-^

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Hi Horst,

Many times I need to output a lot of logo's. Those logo's need to have the same visual weight. Some logo's need to be wider others need to be higher. May I purpose a new method 'logo' or something ?

Pia is dancing nicely with crop contain and cover, but could you let her swing with logo ?

I have a starting point here that works great (used it many times)

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Hi Martijn,

you mean you have a module that outputs images of different aspect ratios in a visual weighted manner?

This would be nice to have, once we have discussed on that already.

Regarding the name 'logo' I'm not sure. Can we find a more descriptive one?

visualWeighted is to long, :lol:

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New addition to contain: weighten!
 
If you want to put some images of different aspect ratio onto a webpage and you want that they are displayed more equal visual weightened, you can use this method and options now:
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* contain with option weighten

$image->contain('square=90, weighten=on');

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There is also the possibility to prioritize portrait or landscape oriented images:
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$image->contain('square=90, weighten=x1');  // landscapes are a bit larger than portraits

$image->contain('square=90, weighten=x2');  // landscapes are a bit more larger than portraits

$image->contain('square=90, weighten=y1');  // portraits are a bit larger than landscapes 

$image->contain('square=90, weighten=y2');  // portraits are a bit more larger than landscapes 

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Have a look to this output here:
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pia_weighten_overview.jpg
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PS:
@Martijn: I have taken your code for the calculations and set the percent value hard coded to 38. This way we only need to turn weighten on or off and have not to deal with values here. The only thing I have added to the calculation is an adjustment to fit better with the largest dimension into the initial bounding box dimensions. (Github)

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Big thanks Horst

 

The only thing I have added to the calculation is an adjustment to fit better with the largest dimension into the initial bounding box dimensions. (Github)

 

Thats why I used a rectangular box in the Gist to control it.

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Thats why I used a rectangular box in the Gist to control it.

Yes, I know and I have used it initially that way. And you also can do it now: when passing width and height instead of square, the other possible options are ignored and the result should be similar to what you have got with the gist code, but maybe a bit larger. (20%)

I thought it would be easier and less confusion for average users to just have a switch for on/off and if they define a square of 120 that they get back the largest possible image with 120px.

If you also like / need the comp param dynamically to define, it can be easily added as a 'silent' option. :)

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I have updated the module to Version 0.1.0 beta and it has a new addition to the weighten option that can be used together with contain.
 
The initial code I have taken for weighten calculations is from Martijn. I have changed it to simplify its usage so that you only need to specify a bounding square and have to switch it on, or additionaly prioritize landscape oriented images in two favours: x1, x2 or do the same for portrait oriented images with: y1, y2. (read more in the posts above)
 
But if you (@Martijn ;) ) like to use more different options, like with the original ImageFitBoundaries.module, you can use it by specifying different values for width and height together with the new value "comp##". For ## you set the value for compression like comp20, comp30, comp40 or whatever you like.

:)

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But if you (@Martijn ;) ) like to use more different options, like with the original ImageFitBoundaries.module, you can use it by specifying different values for width and height together with the new value "comp##". For ## you set the value for compression like comp20, comp30, comp40 or whatever you like.

Don't know if it is already in. But I used ImageFitBoundaries with a 'double' loop. Let me explane :-)

- looping several images through the Module and get the widest value. (No images are scaled, only values are returned)

- then I search the widest image, and take the percentage it is compaired to the box.

- I use that percentage to scale all images up.

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Don't know if it is already in. But I used ImageFitBoundaries with a 'double' loop. Let me explane :-)

- looping several images through the Module and get the widest value. (No images are scaled, only values are returned)

- then I search the widest image, and take the percentage it is compaired to the box.

- I use that percentage to scale all images up.

No, it isn't in like you explained here, but it is somehow in without a double loop. But only when using a square boundary box and when the images are between the ratio aspects 1:2 -> 2:1. Images with more extreme ratio aspects are scaled none linear so that those are displayed smaller.

So, the normal usage of weighten works like your description but is assuming the ratio aspect isn't wider than 2:1 / 1:2.

When we add an additional param for the widest aspect ratio we should get the same effect as you described, I think.

You first have to run a loop through the images, fetching their aspect ratios, and afterwards pass the highest value to the contain-weighten call.

With images == photgraphs I think the average usage is well covered the way how it is setup now. But with logos it could be go much further with aspect ratios. Maybe you can drop in a small list of real logo usage aspect ratios (with extremes), so that I get a grasp of what we are talking here?

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I've used the 'double loop' in pluimveeweb on the right side with the "Kennispartners" logo's. Now there's only 1 partner but when there are 3 or more (2 logo's always visible) it'll get to the widest value possible for the widest logo. 336px / 2 = 168px.

Here's some example code that will explain it better.

$compress = 40; // heavier images compress more
$x = 400; // box size, reference for image
$y = 280; // box size, reference for image
$max = 0; // calculation of the widests image, used to scale all others.

// calculate max width all images ( settings as wide as possible )
foreach($partners as $partner) {
    $image = $partner->generic_logo;
    if($image instanceof Pageimage) {
        $box = $modules->get("ImageFitBoundaries");
        $info = $box->load($image, $x, $y, $compress)->info();
        $max = $max < $info['width'] ? $info['width'] : $max;
    }
}

$percent = 168 * 100 / $max; // 2 X 168 = 336px width of the column

foreach($partners as $partner) {
    $image = $partner->generic_logo;
    
    if($image instanceof Pageimage) {
    
        $box = $modules->get("ImageFitBoundaries");
        $info = $box->load($image, $x, $y, $compress)->info();
        $width = (int) round($info['width'] / 100 * $percent);
        $height = (int) round($info['height'] / 100 * $percent);

        $options = array(
            'quality' => 100,
            'sharpening' => 'none'
        );

        $thumb = $image->size($width, $height, $options);
    }
}

I'm really happy how much you've implemented so far and I think you should not over complicate the module. I think you should leave it how it is now.

Thanks again for implementing weighten !

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Thanks for giving those insights. I have made a note to the additional param for wider aspect ratios, what wouldn't be much work to implement, but will wait if other users request support for weighten with those wider aspect ratios.

Thanks for your help with this. :)

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New addition: retinafy!

this was created on request from @jjozsi here in this post.
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* retinafy

// create a pageimage with any method you like
$image = $page->images->first()->size(400, 300);  

// call retinafy on it
echo $image->retinafy();

// it outputs a markup string like this, where width and height is populated with half the sizes of the pageimage
<img src="/site/assets/files/1234/basename.400x300.jpg" width="200" height="150" alt="description" />

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The default markup template has the default replacements URL, WIDTH, HEIGHT and DESCRIPTION.

<img src="[URL]" width="[WIDTH]" height="[HEIGHT]" alt="[DESCRIPTION]" />

You can change that to any markup you like in the modules Configpage!

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If you have additional properties populated with pageimages in your system, you can provide an array with those property names:

// if you need custom properties in your markup, define the template in the modules config page with those placeholders, 
// please only use UPPERCASE and wrapp these [ ] around them
<img src="[URL]" width="[WIDTH]" height="[HEIGHT]" data-custom1="[CUSTOM1]" data-custom2="[CUSTOM2]" />

// call retinafy with custom property names
$customPropertyNames = array("custom1", "custom2");
echo $image->retinafy($customPropertyNames);

// it outputs a markup string like this, where width and height is populated with half the sizes of the pageimage
<img src="/site/assets/files/1234/basename.400x300.jpg" width="200" height="150" data-custom1="custom-value-1" data-custom2="custom-value-2" />

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Regarding to the technique described in the article @jjozsi linked to in his post it would make much sense to use a low quality setting sitewide by defining it in the ImageSizerOptions, also available on the Pia Configpage. Otherwise, if this is not possible, you need to call your images for that you want the retinafy markup with the quality option set:

// create a pageimage with any method you like
echo $page->images->first()->size(400, 300, array("quality"=>35))->retinafy(); 
Edited by horst
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Hi Horst,

I've used weighten in a newsletter tool for company logo's and it working great. Thanks again for implementing it !

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Have updated Pia to 0.2.2 because she also was affected by the same issue as CroppableImage. Recent PW versions now (can) log modules API actions into logfile modules.txt. This is suppressed now. If you use Pia and a recent PW dev version, please update to 0.2.2. http://modules.processwire.com/modules/pageimage-assistant/

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      if ($q = $sanitizer->selectorValue($input->get->q)) { $results = $pages->find('search_index%=' . $query_string . ', limit=25'); echo $results->render(); echo $results->renderPager(); } Alternatively you can delegate the find operation to the SearchEngine module as well:
      $query = $modules->get('SearchEngine')->find($input->get->q); echo $query->resultsString; // alias for $query->results->render() echo $query->pager; // alias for $query->results->renderPager() Requirements
      ProcessWire >= 3.0.112 PHP >= 7.1.0 Note: later versions of the module may require Composer, or alternatively some additional features may require installing via Composer. This is still under consideration – so far there's nothing here that would really depend on it, but advanced features like stemming most likely would.
      Installing
      It's the usual thing: download or clone the SearchEngine directory into your /site/modules/ directory and install via Admin. Alternatively you can install SearchEngine with Composer by executing composer require teppokoivula/search-engine in your site directory.
    • By teppo
      MarkupMenu is a markup module for generating menu trees. When provided a root page as a starting point, it generates a navigation tree (by default as a HTML "<ul>" element wrapped by a "<nav>" element) from that point onwards. If you've also provided it with current (active) page, the menu will be rendered accordingly, with current item highlighted and items rendered up to that item and its children (unless you disable the "collapsed" option, in which case the full page tree will be rendered instead).
      Modules directory: https://modules.processwire.com/modules/markup-menu/ GitHub repository: https://github.com/teppokoivula/MarkupMenu Usage
      As a markup module, MarkupMenu is intended for front-end use, but you can of course use it in a module as well. Typically you'll only need the render() method, which takes an array of options as its only argument:
      echo $modules->get('MarkupMenu')->render([ 'root_page' => $pages->get(1), 'current_page' => $page, ]); Note: if you omit root_page, site root page is used by default. If you omit current_page, the menu will be rendered, but current (active) page won't be highlighted etc.
      A slightly more complex example, based on what I'm using on one of my own sites to render a (single-level) top menu:
      echo $modules->get('MarkupMenu')->render([ 'current_page' => $page, 'templates' => [ 'nav' => '<nav class="{classes} menu--{menu_class_modifier}" aria-label="{aria_label}">%s</nav>', 'item_current' => '<a class="menu__item menu__item--current" href="{item.url}" tabindex="0" aria-label="Current page: {item.title}">{item.title}</a>', ], 'placeholders' => [ 'menu_class_modifier' => 'top', 'aria_label' => 'Main navigation', ], 'include' => [ 'root_page' => true, ], 'exclude' => [ 'level_greater_than' => 1, ], ]); Note: some things you see above may not be entirely sensible, such as the use of {menu_class_modifier} and {aria_label} placeholders. On the actual site the "nav" template is defined in site config, so I can define just these parts on a case-by-case basis while actual nav markup is maintained in one place.
      Please check out the README file for available render options. I'd very much prefer not to keep this list up to date in multiple places. Basically there are settings for defining "templates" for different parts of the menu (list, item, etc.), include array for defining rules for including in the menu and exclude array for the opposite effect, classes and placeholders arrays for overriding default classes and injecting custom placeholders, etc. 🙂
      MarkupMenu vs. MarkupSimpleNavigation
      TL;DR: this is another take on the same concept. There are many similarities, but also some differences – especially when it comes to the supported options and syntax. If you're currently using MarkupSimpleNavigation then there's probably no reason to switch over.
      I'd be surprised if someone didn't draw lines between this module and Soma's awesome MarkupSimpleNavigation. Simply put I've been using MSN (...) for years, and it's been great – but there are some issues with it, particularly in the markup generation area, and it also does some things in a way that doesn't quite work for me – the xtemplates thing being one of these. In some ways less about features, and more about style, I guess 🙂
      Anyhow, in MarkupMenu I've tried to correct those little hiccups, modernise the default markup, and allow for more flexibility with placeholder variables and additional / different options. MarkupMenu was built for ProcessWire 3.0.112+ and with PHP 7.1+ in mind, it's installable with Composer, and I have a few additional ideas (such as conditional placeholders) still on my todo list.
      One more small(ish) difference is that MarkupMenu supports overriding default options via $config->MarkupMenu. I find myself redefining the default markup for every site, which until now meant that each site had a wrapper function for MarkupSimpleNavigation (to avoid code / config repetition), and this way I've been able to leave that out 🙂
      Requirements
      ProcessWire >= 3.0.112 PHP >= 7.1.0 If you're working on an earlier version of ProcessWire or PHP, use MarkupSimpleNavigation instead.
    • By teppo
      Hey folks!
      I'm happy to finally introduce a project I've been working on for quite a while now: it's called Wireframe, and it is an output framework for ProcessWire.
      Note that I'm posting this in the module development area, maily because this project is still in rather early stage. I've built a couple of sites with it myself, and parts of the codebase have been powering some pretty big and complex sites for many years now, but this should still be considered a soft launch 🙂
      --
      Long story short, Wireframe is a module that provides the "backbone" for building sites (and apps) with ProcessWire using an MVC (or perhaps MVVM – one of those three or four letter abbreviations anyway) inspired methodology. You could say that it's an output strategy, but I prefer the term "output framework" since in my mind the word "strategy" means something less tangible. A way of doing things, rather than a tool that actually does things.
      Wireframe (the module) provides a basic implementation for some familiar MVC concepts, such as Controllers and a View layer – the latter of which consists of layouts, partials, and template-specific views. There's no "model" layer, since in this context ProcessWire is the model. As a module Wireframe is actually quite simple – not even nearly the biggest one I've built – but there's still quite a bit of stuff to "get", so I've put together a demo & documentation site for it at https://wireframe-framework.com/.
      In addition to the core module, I'm also working on a couple of site profiles based on it. My current idea is actually to keep the module very light-weight, and implement most of the "opinionated" stuff in site profiles and/or companion modules. For an example MarkupMenu (which I released a while ago) was developed as one of those "companion modules" when I needed a menu module to use on the site profiles.
      Currently there are two public site profiles based on Wireframe:
      site-wireframe-docs is the demo&docs site mentioned above, just with placeholder content replaced with placeholder content. It's not a particularly complex site, but I believe it's still a pretty nice way to dig into the Wireframe module. site-wireframe-boilerplate is a boilerplate (or starter) site profile based on the docs site. This is still very much a work in progress, but essentially I'm trying to build a flexible yet full-featured starter profile you can just grab and start building upon. There will be a proper build process for resources, it will include most of the basic features one tends to need from site to site, etc. --
      Requirements and getting started:
      Wireframe can be installed just like any ProcessWire module. Just clone or download it to your site/modules/ directory and install. It doesn't, though, do a whole lot of stuff on itself – please check out the documentation site for a step-by-step guide on setting up the directory structure, adding the "bootstrap file", etc. You may find it easier to install one of the site profiles mentioned above, but note that this process involves the use of Composer. In the case of the site profiles you can install ProcessWire as usual and download or clone the site profile directory into your setup, but after that you should run "composer install" to get all the dependencies – including the Wireframe module – in place. Hard requirements for Wireframe are ProcessWire 3.0.112 and PHP 7.1+. The codebase is authored with current PHP versions in mind, and while running it on 7.0 may be possible, anything below that definitely won't work. A feature I added just today to the Wireframe module is that in case ProcessWire has write access to your site/templates/ directory, you can use the module settings screen to create the expected directories automatically. Currently that's all, and the module won't – for an example – create Controllers or layouts for you, so you should check out the site profiles for examples on these. (I'm probably going to include some additional helper features in the near future.)
      --
      This project is loosely based on an earlier project called pw-mvc, i.e. the main concepts (such as Controllers and the View layer) are very similar. That being said, Wireframe is a major upgrade in terms of both functionality and architecture: namespaces and autoloader support are now baked in, the codebase requires PHP 7, Controllers are classes extending \Wireframe\Controller (instead of regular "flat" PHP files), implementation based on a module instead of a collection of drop-in files, etc.
      While Wireframe is indeed still in a relatively early stage (0.3.0 was launched today, in case version numbers matter) for the most part I'm happy with the way it works, and likely won't change it too drastically anytime soon – so feel free to give it a try, and if you do, please let me know how it went. I will continue building upon this project, and I am also constantly working on various side projects, such as the site profiles and a few unannounced helper modules.
      I should probably add that while Wireframe is not hard to use, it is more geared towards those interested in "software development" type methodology. With future updates to the module, the site profiles, and the docs I hope to lower the learning curve, but certain level of "developer focus" will remain. Although of course the optimal outcome would be if I could use this project to lure more folks towards that end of the spectrum... 🙂
      --
      Please let me know what you think – and thanks in advance!
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