Delete invalid oEmbed caches with binary titles

There are a few old oEmbed caches which have the title saved in binary
(because they contain Chinese characters). This fails with
`ActionView::Template::Error ("å" from ASCII-8BIT to UTF-8)`. Since I
found only very old OEmbed caches with this problem (newest from 2012),
I think we can just remove these. When I create a new oEmbed cache for
the same URL it creates it without `!binary`.

closes #7620
parent 3fafcd93
......@@ -24,6 +24,7 @@
* Fix invalid data in the database for user data export [#7614](
* Fix local migration run without old private key [#7558](
* Fix export not downloadable because the filename was resetted on access [#7622](
* Delete invalid oEmbed caches with binary titles [#7620](
## Features
* Ask for confirmation when leaving a submittable comment field [#7530](
class CleanupInvalidOEmbedCaches < ActiveRecord::Migration[5.1]
class OEmbedCache < ApplicationRecord
class Post < ApplicationRecord
def up
ids = OEmbedCache.where("data LIKE '%!binary%'").ids
Post.where(o_embed_cache_id: ids).update_all(o_embed_cache_id: nil) # rubocop:disable Rails/SkipsModelValidations
OEmbedCache.where(id: ids).delete_all
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