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media assets: optimize /media_assets?search[is_posted] query.

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Followup to 093a808a3. Using a NOT EXISTS clause is much faster than the
`LEFT OUTER JOIN posts WHERE posts.id IS NULL` clause generated by
`.where.missing(:post)`.
This commit is contained in:
evazion
2022-02-18 04:24:33 -06:00
parent 77515915a4
commit fc5aec7de0
1 changed files with 4 additions and 2 deletions
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6
app/models/media_asset.rb
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@@ -189,9 +189,11 @@ class MediaAsset < ApplicationRecord
end end
if params[:is_posted].to_s.truthy? if params[:is_posted].to_s.truthy?
q = q.where.associated(:post) #q = q.where.associated(:post)
q = q.where(Post.where("posts.md5 = media_assets.md5").arel.exists)
elsif params[:is_posted].to_s.falsy? elsif params[:is_posted].to_s.falsy?
q = q.where.missing(:post) #q = q.where.missing(:post)
q = q.where.not(Post.where("posts.md5 = media_assets.md5").arel.exists)
end end
q.apply_default_order(params) q.apply_default_order(params)