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Indexing a polymorphic assoc adds index on type and id [ci skip]

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Steve Lounsbury 2015-03-01 14:06:38 -05:00
parent edbcdb95ff
commit 683ad0b471
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guides/source/association_basics.md
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@ -460,7 +460,7 @@ class CreatePictures < ActiveRecord::Migration
t.timestamps null: false
end
add_index :pictures, :imageable_id
add_index :pictures, [:imageable_id, :imageable_type]
end
end
```