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Stikki

Pages2JSON

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Where do i get?

From here: https://github.com/IDT-media/Pages2JSON (thanks to LostKobrakai for "bug" report)

What does this do?

Simply adds method toJSON() to Page and PageArray elements, is capable to converting image and file arrays to URL containers, travels recursively all objects before outputs actual JSON.

How to use?

Simply install this module, configure data you want it to export in JSON result (similar to Ryan's ServicePages, thanks btw used some of ur code here). in templates or anywhere you need JSON output, call: $page->toJSON(); or $pages->toJSON();

Live example with template: search.php

/*****************************************************************
 Do search
*****************************************************************/

$term = $sanitizer->text($input->term);
$results = array();

if($term) {

    $input->whitelist('term', $term);

    $term = $sanitizer->selectorValue($term);
    
    $limit = (int)$input->limit;
    $limit = $limit ? $limit : 50;
    $limit = $sanitizer->selectorValue($limit);     
    
    $selector = "title|categories|content*=$term, limit=$limit, template=default|product";

    // Prevent admin pages.
    if($user->isLoggedin()) $selector .= ", has_parent!=2";

    // Find pages that match the selector
    $results = $pages->find($selector);
}

/*****************************************************************
 Output
*****************************************************************/

header("Content-type: application/json");
echo $results->toJSON();
exit();

Customizing values:

if(wire('config')->ajax) {
    wire()->addHookAfter('Pages2JSON::getValue', function($event) {

        $value = $event->arguments(0);
    
        if(!is_object($value))
            return;
        
        $page = wire('page');
        if($page->template == 'thumbs' && $value->className == 'Pageimage')
            $event->return = $value->size(28,28)->url;
        
    });
}

Here i swap URL of all Pageimage objects in JSON response to match thumbs. Simple hu?

Edited by Nico Knoll
Added the "module" tag and removed it from title.
  • Like 10

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A link to your module would make it easier for people to use it :)

Heyyy, awesome IDEA!

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Hi. thx for a module :), i wonder is there a way to include translation fields as well. Textarea (default) + other languages, and so on.

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Hi. thx for a module :), i wonder is there a way to include translation fields as well. Textarea (default) + other languages, and so on.

Well, it just reads attached fields and outputs data as fields provide it in that context, i didn't test with MLE fields, but i would assume output is in language that is currently in use as this is purely just JSON parser, it doesn't change data anyhow by default. If this behavior ain't correct in your opinion, please open ticket to Github and i'll take a look.

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Hello Stikki.

   Is there a way to get the title of images or files?

By the way, thank you for the fantastic module.

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You can try override default behavior:

wire()->addHookAfter('Pages2JSON::getValue', function($event) {

	$value = $event->arguments(0);

	if(!is_object($value))
		return;
	
	if($value->className == 'Pageimage') {
	
		$obj = new stdClass;
		$obj->url 		= $value->url;
		$obj->description 	= $value->description;

		$event->return = $obj;		
	}	
});

Didn't test this btw, you could let ppl know if it works, thanks.

  • Like 1

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I added in line 138 of the module those lines to get lat, lng, zoom, address and descriptions of images and files

protected function ___getValue($value)
{
if(!is_object($value))
return $value;

switch($value->className) {

case 'Page':
return $this->toPage($value);

case 'Pageimage':
case 'Pagefile':
return array("url"=>$value->url, "description"=>$value->description);

case 'Pagefiles':
case 'Pageimages':
case 'PageArray':
case 'WireArray':
return $this->toArray($value);
case 'MapMarker':
return array("lat"=>$value->lat, "lng"=>$value->lng, "zoom"=>$value->zoom, "address"=>$value->address);
}

return null;
}

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I added in line 138 of the module those lines to get lat, lng, zoom  and address

case 'MapMarker':
  return array("lat"=>$value->lat, "lng"=>$value->lng, "zoom"=>$value->zoom, "address"=>$value->address);

Was MapMarker currently core module? If so i'll add it then.

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Okey, i'll consider it but since it's not currently core module use own custom version of this or alter it by hooking, if more people vote for MapMarker it gets in more likely, thanks for awesome documentation tho.

However i'll change file and image files to support description by default just like you suggested.

Those who already use this module, notice that this will break your JSON streams when it comes to files and images.

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New version out (0.0.2)

  • Allows user define global data output in module options + individual data based on template.
  • Added forum user Manol's feature request regarding PageImage and PageFile fields.
  • Like 2

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I just installed your module in the latest 3.0.7 dev. It works as expected when accessing a page as guest, but when I'm logged in as admin, I get JSON output from richtext-fields like this:

summary: "<div id=pw-edit-2 class='pw-edit pw-edit-InputfieldTextarea' data-name=summary data-page=1001 style='position:relative'><div class=pw-edit-orig>This is a placeholder page with two child pages to serve as an example. </div><div class=pw-edit-copy id=pw-editor-summary-1001 style='display:none;-webkit-user-select:text;user-select:text;' contenteditable>This is a placeholder page with two child pages to serve as an example. </div></div>",

I don't remember this module doing this in 2.x versions... if you get the chance, could you find out what's causing this?

Oh, and also: fieldtype Matrix Repeater is completely ignored. Is that fieldtype too complex to render as JSON?

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Howdy dragan,

Will look into this matter when i start testing with 3.x series, haven't touched that yet.

And what comes to Matrix repeater, it only works with standard fields currently, special fields would require own checkpoint, and since haven't used Matrix repeater myself yet, there is no check for that. You can always hook to getValue() method and implement you own check without hacking module.

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The markup seems to be by the frontend editing feature, which explains why it's only for logged in users. The internals of matrix repeaters are quite complex and will probably need a special implementation, because it's using a single template for all the different types of data (which doesn't make sense in my mind, but so be it).

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OK, turns out the Front-End Page Editor module is injecting PW-backend specific stuff (all over the place) - in the HTML source too, not just when doing echo $page->body etc.

For now (for 3.x tests) I'll use something like this, when I need JSON output:

if($input->urlSegment1 === 'json') {
	header("Content-type: application/json");

	$ar['title'] 		= $page->title;
	$ar['body'] 		= $page->body;
	$ar['summary'] 		= $page->summary;
	$ar['created'] 		= $page->created;
	$ar['modified'] 	= $page->modified;

        // new way how to render fields (optional) - with "baby" templates for each field
	$ar['matrix_test'] 	= $page->render('matrix_test');

	$output = json_encode($ar);
	echo $output;
	exit();
}

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So this is turning another Drupal? Shame.

https://processwire.com/blog/posts/front-end-editing-now-in-processwire-3.0-alpha-4/

"All of the front-end editing features are provided by a module included with the ProcessWire 3.0 core called PageFrontEdit. Once this module is installed, you can use any of the above options. The module is not installed by default."

So it is not turning Drupal.

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Great module! It came in handy and saved me a lot of work from building my own JSON. Thanks!

I do need to modify the output and I am struggling to understand how to do so.  By default, the http host is not appended to any url and I need that for this particular project. I figured this would be a simple fix, but can't find where to alter that particular value. If you reference the json below, you will see the file node with the url displayed. There are two other nodes that I need to alter the same. Images and video. Any tips are appreciated.

//original code
$items = $pages->findMany("template=item"); 
echo $items->toJSON();
{
        "pages": [
            {
                "id": 1033,
                "title": "Page 1"
            },
            {
                "id": 1116,
                "title": "Page 2"
            }
        ],
        "categories": [
            {
                "id": 1031,
                "title": "Brochures"
            },
            {
                "id": 1036,
                "title": "Photos"
            }
        ],
        "file": {
            "description": "File 1",
            "url": "/site/assets/files/1039/file1.pdf"
        },
        "id": 1039,
        "images": [],
        "modified": 1490728945,
        "title": "Test Document 1",
        "type": {
            "name": "file"
        }
    },

 

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So I figured it out and here is my complete code if it would help anyone else. 

//get the pages you want
$items = $pages->findMany("template=item"); 

wire()->addHookAfter('Pages2JSON::getValue', function($event) {
	//get the host
   	$host = wire('config')->httpHost;
    $value = $event->arguments(0);
    if(!is_object($value))
        return;
	//check if field is an image, images or file type
    if($value->className == 'Pageimage' || $value->className == 'Pagefile') {
		//append the host to those values
       $urls = array("url" => $host . $value->url, "description" => $value->description);
       $event->return = $urls;
    }
        
});

header('Access-Control-Allow-Origin: *');
header('Content-Type: application/json');
echo $items->toJSON();
exit();

Thanks again for the great plugin.

Edited by RyanJ
Updated code to retain key values and description.
  • Like 2

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I am trying to get this to work with Kongondo's Media Manager Module. Unfortunately I can't get the url/description to return. I have modified the plugin with no luck, It still returns null.  Anyone had any luck with these two?

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I'm trying out this module as well. I was able to add support for SelectableOption and SelectableOptionArray.

Then I ran into an infinite loop. 

I'm using @Robin S's ConnectPages to connect some of my templates, and it would go on until it reaches max exec time. For example:

Jane (Page)
	- Progenitors (Page Multiple)
		- John (Page)

John (Page)
	- Progeny (Page Multiple)
		- Jane (Page)

 

So when it's iterating over Jane's fields, it would come into it's progenitor field which is a multi page field, and would start listing John's fields. In there it would come into John's progeny field and would start listing Jane's data again, and would find John... and so on..

Would anyone have an idea on how to stop the loop from going over and over, or a way to stop the recursion from going too deep? I'd appreciate any help. Thanks.

 

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2 hours ago, Alxndre' said:

Would anyone have an idea on how to stop the loop from going over and over, or a way to stop the recursion from going too deep?

When looping over the pages in a Page field, set some property to the Page object to serve as an indicator that the page has been processed. Then put your code that processes the pages inside an if() condition that checks that the property has not already been set. So something like:

if(!$page->processed) {
    // do your processing here
    // ...
    $page->processed = true;
}

 

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Thanks Robin. I was able to make it work with some modifications by just returning the ids (instead of the whole page) for pagefields.

Another concern I have is that the json response that I get has [] brackets at the end.

Sample:

{
  "id":1058,
  "firstname":"Julie Ann Mae",
  "sex":[1],
  "birthdate":768931200,
  "nationality":[93],
  "guardians":[1059,1060]
}[]

Is this normal behavior? I can't figure out where it gets inserted. It's been returning that from the beginning.

 

EDIT: I got it. It was totally my fault. :) Thanks

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I am trying to make this module work, but I am stuck with this message:

Uncaught ArgumentCountError: Too few arguments to function Pages2JSON::___getFields(), 0 passed in …/site/modules/Pages2JSON/Pages2JSON.module on line 182

What did I make wrong?

  $term = "update";
  $results = array();
  $limit = 3;
  $selector = "title*=$term, limit=$limit, template=entry";
  $results = $pages->find($selector);

  header("Content-type: application/json");
  echo $results->toJSON();
  exit();

 

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

      * 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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