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| author | George Claghorn <george@basecamp.com> | 2019-07-20 06:33:11 -0400 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2019-07-20 06:33:11 -0400 |
| commit | 400b2103540e1dfb370eab29a891687d778ad357 (patch) | |
| tree | f5b85f2bca64559e9b75edfd1e176db03ecaa7f8 /activemodel/lib/active_model.rb | |
| parent | 876548a7e7307fc7d4c22fb6560df1474353d0cf (diff) | |
| download | rails-400b2103540e1dfb370eab29a891687d778ad357.tar.gz rails-400b2103540e1dfb370eab29a891687d778ad357.tar.bz2 rails-400b2103540e1dfb370eab29a891687d778ad357.zip | |
Preserve existing attachment assignment behavior for upgraded apps
Assigning to a collection of attachments appends rather than replacing, as in 5.2. Existing 5.2 apps that rely on this behavior will no longer break when they're upgraded to 6.0.
For apps generated on 6.0 or newer, assigning replaces the existing attachments in the collection. #attach should be used to add new attachments to the collection without removing existing ones.
I expect that we'll deprecate the old behavior in 6.1.
Closes #36374.
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