method

sequence_name_from_parts

v6.0.0 - Show latest stable - 0 notes - Class: SchemaStatements

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sequence_name_from_parts(table_name, column_name, suffix) public

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# File activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb, line 658
          def sequence_name_from_parts(table_name, column_name, suffix)
            over_length = [table_name, column_name, suffix].sum(&:length) + 2 - max_identifier_length

            if over_length > 0
              column_name_length = [(max_identifier_length - suffix.length - 2) / 2, column_name.length].min
              over_length -= column_name.length - column_name_length
              column_name = column_name[0, column_name_length - [over_length, 0].min]
            end

            if over_length > 0
              table_name = table_name[0, table_name.length - over_length]
            end

            "#{table_name}_#{column_name}_#{suffix}"
          end

sequence_name_from_parts

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