Add_index_options Rails Migration

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Ruby on Rails latest stable (v4.2.7) – 6 notes – Class:. Allows you to specify indices to add in a migration that will only be created if they do not # already exist ,

Dec 9, 2013. up vote 1 down vote. Faster way using add_index_options: def change add_index_options :editabilities, [:user_id, :list_id], unique: true end.

add_column_options! (<= v4.0.2); Importance_3_sm add_foreign_key; Importance_5_sm add_index; Importance_0_sm add_index_options; Importance_0_sm.

index_exists? (ActiveRecord::ConnectionAdapters. – APIdock – add_column_options! (<= v4.0.2); Importance_3_sm add_foreign_key; Importance_5_sm add_index; Importance_0_sm add_index_options; Importance_0_sm.

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