search for: createrelations

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2012 Mar 22
6
rescuing ActiveRecord::RecordNotUnique: clever or ugly?
I have an ActiveRecord that has several foreign keys, where the foreign keys act as a single compound key that needs to be unique: class CreateRelations < ActiveRecord::Migration def change create_table :relations do |t| t.references :src, :null => false t.references :dst, :null => false end add_index :relations, [:src_id, :dst_id], :unique => true end end One obvious way to enforce uniqueness would be using...