/ Ruby on Rails
/
method

foreign_key_exists?

foreign_key_exists?(from_table, options_or_to_table = {})
public

Checks to see if a foreign key exists on a table for a given foreign key definition.

# Check a foreign key exists
foreign_key_exists?(:accounts, :branches)

# Check a foreign key on a specified column exists
foreign_key_exists?(:accounts, column: :owner_id)

# Check a foreign key with a custom name exists
foreign_key_exists?(:accounts, name: "special_fk_name")