ActiveRecord::ConnectionAdapters::SchemaStatements

# File activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb, line 378 def add_column(table_name, column_name, type, options = {}) at = create_alter_table table_name at.add_column(column_name, type, options) execute schema_creation.accept at end Adds a new foreign key. from_table is the table with the key column, to_table contains the referenced primary key. The foreign