CODEWITHSUNDEEP
phplaravellaravel-5.1
tom f
tom f

Reputation: 389

Laravel Blade returns a "Undefined property" on an object that has a defined property

I have a model with several fields, including two text fields that store JSON lists of dictionaries. One of them, that stores image data, is working fine; however a second one that stores a list of dicts with links returns a Undefined property: stdClass::$title when I try to access the property from a blade template.

All of the other properties (including the images JSON converted to an array of objects) are rendering fine if I remove the call to my links property.

I've tried to dd() the links property and it both shows that it's set, it's an array, and it's full of objects with both the properties (title, url) that I'm trying to access when it fails.

Once I try to actually access them, however, I get that Undefined property for the exact properties I'm trying to access.

Wondering if anyone has encountered anything like this? The really odd thing is that the images JSON data is rendering without a single problem. It's all tied together with Route Model binding, which is verified to be working.

Property getters in Eloquent Model

public function getLinksAttribute() {
    if (!empty($this->attributes['links'])) {
        return json_decode($this->attributes['links']);
    }
}

public function getImagesAttribute() {
    if (!empty($this->attributes['images'])) {
        return json_decode($this->attributes['images']);
    }
}

Section of blade template calling the link property, that fails

@if (is_array($artist->links))
<div class="links">
    <h4>Links</h4>

        <ul>
            @foreach ($artist->links as $link)
                {{ $link->title }}, {{ $link->url }}
            @endforeach
        </ul>

</div>
    @endif

Section of blade template calling the images property, that succeeds

@if (is_array($artist->images))
    <ul class="images">
        @foreach ($artist->images as $image)

            <li>{!! Html::image(Html::buildS3Url(array(
        "basedir" => "artists", "id" => $artist->id, "prefix" => $image->prefix,
        "extension" => $image->extension, "conversion" => "display")
    ), $artist->name) !!}</li>

        @endforeach
    </ul>
@endif

Json encoded data in database via tinker, and subsequent dd()

### links (doesn't work)
#tinker output
links: "[{"'title'":"test","'url'":"http:\/\/test.com"}]",,

# dd()
array:1 [▼
  0 => {#308 ▼
    +"'title'": "test"
    +"'url'": "http://test.com"
  }
]
### images (works)
# tinker output
images: "[{"prefix":1440693993,"extension":"png"},{"prefix":1440697822,"extension":"png"}]"

# dd()    
array:2 [▼
      0 => {#308 ▼
        +"prefix": 1440693993
        +"extension": "png"
      }
      1 => {#307 ▼
        +"prefix": 1440697822
        +"extension": "png"
      }
    ]

Upvotes: 1

Views: 4133

Answers (1)

num8er
num8er

Reputation: 19372

"Undefined property: stdClass::$title"

seems like in one of Your links missing title property

You can check it by:

@foreach ($artist->links as $link)
  <?php if(property_exists($link, "title")) : ?>
    {{ $link->title }}
  <?php else : ?>
    NO TITLE [DEBUG: {{ dd($link) }}]
  <?php endif; ?>, {{ $link->url }}
@endforeach

also I've found one thing: 

links: "[{"'title'":"test","'url'":"http:\/\/test.com"}]",,

Your element field is ' title ' (with '), but it must be "title": "test"

You can fix it by removing single quotes in paramater names.

Upvotes: 3

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