discourse/app/jobs/regular/generate_topic_thumbnails.rb

# frozen_string_literal: true

module Jobs
  class GenerateTopicThumbnails < ::Jobs::Base
    sidekiq_options queue: 'ultra_low'

    def execute(args)
      topic_id = args[:topic_id]
      extra_sizes = args[:extra_sizes]

      raise Discourse::InvalidParameters.new(:topic_id) if topic_id.blank?

      topic = Topic.find_by(id: topic_id)
      topic&.generate_thumbnails!(extra_sizes: extra_sizes)
    end

  end
end
FEATURE: Include optimized thumbnails for topics (#9215) This introduces new APIs for obtaining optimized thumbnails for topics. There are a few building blocks required for this: - Introduces new `image_upload_id` columns on the `posts` and `topics` table. This replaces the old `image_url` column, which means that thumbnails are now restricted to uploads. Hotlinked thumbnails are no longer possible. In normal use (with pull_hotlinked_images enabled), this has no noticeable impact - A migration attempts to match existing urls to upload records. If a match cannot be found then the posts will be queued for rebake - Optimized thumbnails are generated during post_process_cooked. If thumbnails are missing when serializing a topic list, then a sidekiq job is queued - Topic lists and topics now include a `thumbnails` key, which includes all the available images: ``` "thumbnails": [ { "max_width": null, "max_height": null, "url": "//example.com/original-image.png", "width": 1380, "height": 1840 }, { "max_width": 1024, "max_height": 1024, "url": "//example.com/optimized-image.png", "width": 768, "height": 1024 } ] ``` - Themes can request additional thumbnail sizes by using a modifier in their `about.json` file: ``` "modifiers": { "topic_thumbnail_sizes": [ [200, 200], [800, 800] ], ... ``` Remember that these are generated asynchronously, so your theme should include logic to fallback to other available thumbnails if your requested size has not yet been generated - Two new raw plugin outlets are introduced, to improve the customisability of the topic list. `topic-list-before-columns` and `topic-list-before-link` 2020-05-05 16:07:50 +08:00			`# frozen_string_literal: true`

			`module Jobs`
			`class GenerateTopicThumbnails < ::Jobs::Base`
			`sidekiq_options queue: 'ultra_low'`

			`def execute(args)`
			`topic_id = args[:topic_id]`
			`extra_sizes = args[:extra_sizes]`

			`raise Discourse::InvalidParameters.new(:topic_id) if topic_id.blank?`

FIX: Handle a deleted topic in thumbnail generation Follow up to 03818e642a1ae871bffdc0c39c10f05f0b8b0398 A topic can be deleted between job enqueue and job execution 2020-05-12 00:32:37 +08:00			`topic = Topic.find_by(id: topic_id)`
			`topic&.generate_thumbnails!(extra_sizes: extra_sizes)`
FEATURE: Include optimized thumbnails for topics (#9215) This introduces new APIs for obtaining optimized thumbnails for topics. There are a few building blocks required for this: - Introduces new `image_upload_id` columns on the `posts` and `topics` table. This replaces the old `image_url` column, which means that thumbnails are now restricted to uploads. Hotlinked thumbnails are no longer possible. In normal use (with pull_hotlinked_images enabled), this has no noticeable impact - A migration attempts to match existing urls to upload records. If a match cannot be found then the posts will be queued for rebake - Optimized thumbnails are generated during post_process_cooked. If thumbnails are missing when serializing a topic list, then a sidekiq job is queued - Topic lists and topics now include a `thumbnails` key, which includes all the available images: ``` "thumbnails": [ { "max_width": null, "max_height": null, "url": "//example.com/original-image.png", "width": 1380, "height": 1840 }, { "max_width": 1024, "max_height": 1024, "url": "//example.com/optimized-image.png", "width": 768, "height": 1024 } ] ``` - Themes can request additional thumbnail sizes by using a modifier in their `about.json` file: ``` "modifiers": { "topic_thumbnail_sizes": [ [200, 200], [800, 800] ], ... ``` Remember that these are generated asynchronously, so your theme should include logic to fallback to other available thumbnails if your requested size has not yet been generated - Two new raw plugin outlets are introduced, to improve the customisability of the topic list. `topic-list-before-columns` and `topic-list-before-link` 2020-05-05 16:07:50 +08:00			`end`

			`end`
			`end`