How can I get image locations in a list of entries using the Element API plugin?

Question

'api/looks/list' => [
        'criteria' => ['section' => 'looks'],
        'transformer' => function(EntryModel $entry) {

                //print_r($entry->getAncestors());
                // $model = $entry->content->attributeConfigs["featuredImage"]["model"];
                // echo 'class type: ' . get_class($model);
                // print_r($model);

            return [
                'title' => $entry->title,
                'id' => $entry->id,
                'url' => $entry->url,
                'jsonUrl' => UrlHelper::getUrl("looks/{$entry->id}.json"),
                'kachelgroesse' => $entry->kachelgroesse,
                'category' => $entry->category,
                'image' => $entry->image
            ];
        },
    ],

This is my elementapi.php file and it returns:

{
  "data": [
    {
      "title": "SHINY AND RED LIPS",
      "id": "281",
      "url": "http://craft.dev:8888/looks/shiny-and-red-lips",
      "jsonUrl": "http://craft.dev:8888/looks/281.json",
      "kachelgroesse": {
        "0": {
          "label": "mittel",
          "value": "mittel",
          "selected": true
        }
      },
      "category": {
        "0": {
          "label": "Make-Up",
          "value": "Make-Up",
          "selected": true
        }
      },
      "image": {}
    }
  ],
}

There is no image returning. I am requesting the list of all entries and their image/asset location from the API.

Answer 1

This should work for the images and you can easily adapt to do your categories & kachelgroesse if needed (not tested)...

'api/looks/list' => [
    'elementType' => 'Entry',
    'criteria' => ['section' => 'looks'],
    'transformer' => function(EntryModel $entry) {
        $images = [];
        foreach ($entry->featuredImage as $image) {
        $images[] = $image->url;
        }
        return [
        'title' => $entry->title,
        'id' => $entry->id,
        'url' => $entry->url,
        'jsonUrl' => UrlHelper::getUrl("looks/{$entry->id}.json"),
        'kachelgroesse' => $entry->kachelgroesse,
        'category' => $entry->category,
        'image' => $images
        ];
    },
],

Answer 2

A similar question regarding images was answered in this ticket I believe: https://craftcms.stackexchange.com/a/13236/4433

Answer 3

You can do something like this:

'transformer' => function(craft\elements\Entry $entry) {
        $image = $entry->photos->one();

    return [
        'image' => $image ? $image->url : null,
    ];
},

More info here.