method

foreign_keys

Ruby on Rails latest stable (v7.1.3.2) - 0 notes - Class: ActiveRecord::ConnectionAdapters::SQLite3Adapter

1.0.0
1.1.6
1.2.6
2.0.3
2.1.0
2.2.1
2.3.8
3.0.0
3.0.9
3.1.0
3.2.1
3.2.8
3.2.13
4.0.2
4.1.8
4.2.1
4.2.7
4.2.9
5.0.0.1
5.1.7 (0)
5.2.3 (0)
6.0.0 (0)
6.1.3.1 (0)
6.1.7.7 (0)
7.0.0 (0)
7.1.3.2 (0)
7.1.3.4 (0)
What's this?

foreign_keys(table_name) public

No documentation

This method has no description. You can help the Ruby on Rails community by adding new notes.

# File activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb, line 368
      def foreign_keys(table_name)
        # SQLite returns 1 row for each column of composite foreign keys.
        fk_info = internal_exec_query("PRAGMA foreign_key_list(#{quote(table_name)})", "SCHEMA")
        grouped_fk = fk_info.group_by { |row| row["id"] }.values.each { |group| group.sort_by! { |row| row["seq"] } }
        grouped_fk.map do |group|
          row = group.first
          options = {
            on_delete: extract_foreign_key_action(row["on_delete"]),
            on_update: extract_foreign_key_action(row["on_update"])
          }

          if group.one?
            options[:column] = row["from"]
            options[:primary_key] = row["to"]
          else
            options[:column] = group.map { |row| row["from"] }
            options[:primary_key] = group.map { |row| row["to"] }
          end
          ForeignKeyDefinition.new(table_name, row["table"], options)
        end
      end

foreign_keys

Related methods

No documentation