Chatwoot/db/migrate/20191027054756_create_contact_inboxes.rb

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class CreateContactInboxes < ActiveRecord::Migration[6.1]
def change
create_table :contact_inboxes do |t|
t.references :contact, foreign_key: true, index: true
t.references :inbox, foreign_key: true, index: true
t.string :source_id, null: false
t.timestamps
end
add_index :contact_inboxes, [:inbox_id, :source_id], :unique => true
add_index :contact_inboxes, [:source_id]
remove_column :contacts, :inbox_id, :integer
remove_column :contacts, :source_id, :integer
end
end