discourse/spec/lib/db_helper_spec.rb
David Taylor 03818e642a
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 09:07:50 +01:00

62 lines
1.7 KiB
Ruby

# frozen_string_literal: true
require 'rails_helper'
RSpec.describe DbHelper do
describe '.remap' do
it 'should remap columns properly' do
post = Fabricate(:post, cooked: "this is a specialcode that I included")
post_attributes = post.reload.attributes
badge = Fabricate(:badge, query: "specialcode")
badge_attributes = badge.reload.attributes
DbHelper.remap("specialcode", "codespecial")
post.reload
expect(post.cooked).to include("codespecial")
badge.reload
expect(badge.query).to eq("codespecial")
expect(badge_attributes.except("query"))
.to eq(badge.attributes.except("query"))
end
it 'allows tables to be excluded from scanning' do
post = Fabricate(:post, cooked: "test")
DbHelper.remap("test", "something else", excluded_tables: %w{posts})
expect(post.reload.cooked).to eq('test')
end
it "does not remap readonly columns" do
post = Fabricate(:post, raw: "This is a test", cooked: "This is a test")
Migration::ColumnDropper.mark_readonly("posts", "cooked")
DbHelper.remap("test", "something else")
post.reload
expect(post.raw).to eq("This is a something else")
expect(post.cooked).to eq("This is a test")
DB.exec "DROP FUNCTION #{Migration::BaseDropper.readonly_function_name("posts", "cooked")} CASCADE"
end
end
describe ".regexp_replace" do
it "should remap columns correctly" do
post = Fabricate(:post, raw: "this is a [img]test[/img] post")
DbHelper.regexp_replace("\\[img\\]test\\[/img\\]", "[img]something[/img]")
expect(post.reload.raw).to include("[img]something[/img]")
end
end
end