CODEWITHSUNDEEP
ruby-on-railsjsonthumbnails
user1982288
user1982288

Reputation:

Rails json output carrierwave thumbnail version

I need to render out a json output from a controller and I'd like to include the thumbnail version of my images in the json.

If I render json using only :image_url it outputs the full image url, if I use :image then it will lists all the available images (including thumbnail).

How do I render out in json just the thumbnail version of the image?

Thanks,

Upvotes: 2

Views: 1737

Answers (2)

Awais
Awais

Reputation: 1811

i suggest you to use Serializer like this:

class YourSerializer < ActiveModel::Serializer
  attributes(
    :id,
    :image,
    :small,
    :medium,
    :large
  )

  def small
    url(width: 116, height: 116, crop: "fill")
  end

  def medium
    url(width: 640, height: 400, crop: "fill")
  end

  def large
    url(width: 1000, crop: "fill")
  end

  private

  def url(options={})
    options[:format] = "png"
    options[:secure] = true

    object.image_url(options)
  end
end

if you goes to stick with thumbnail or already defined version just use:

def url
      object.image_url(:thumbnail)
end

Upvotes: 2

Kashif Umair Liaqat
Kashif Umair Liaqat

Reputation: 1074

You should use something like this.

class ArtworkSerializer < ActiveModel::Serializer
    attributes :id, :name, :image_url

    def image_url
      object.image_url(:thumbnail)
    end
  end

Then in your JSON response, you will have an attribute :image_url.

Note: You should have a version defined :thumbnail in your carrierwave uploader.

Upvotes: 5

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