Module: BetterRecord::Migration

Defined in:
lib/better_record/migration.rb

Instance Method Summary collapse

Instance Method Details

#audit_table(table_name, rows = nil, query_text = nil, skip_columns = %w[ updated_at ])) ⇒ Object 



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# File 'lib/better_record/migration.rb', line 5

def audit_table(table_name, rows = nil, query_text = nil, skip_columns = %w[ updated_at ])
  reversible do |d|
    d.up do
      if(rows && rows.is_a?(Array))
        skip_columns = rows
        rows = true
        query_text = true
      end

      if rows.nil? && skip_columns.is_a?(Array)
        rows = true
        query_text = query_text.nil? ? true : query_text
      end

      if(rows.nil? )
        execute "SELECT #{BetterRecord.db_audit_schema}.audit_table('#{table_name}');"
      else
        rows = !!rows ? 't' : 'f'
        query_text = !!query_text ? 't' : 'f'
        skip_columns = skip_columns.present? ? "'{#{skip_columns.join(',')}}'" : 'ARRAY[]'
        execute "SELECT #{BetterRecord.db_audit_schema}.audit_table('#{table_name}', BOOLEAN '#{rows}', BOOLEAN '#{query_text}', #{skip_columns}::text[]);"
      end
    end

    d.down do
      execute "DROP TRIGGER IF EXISTS audit_trigger_row ON #{table_name};"
      execute "DROP TRIGGER IF EXISTS audit_trigger_stm ON #{table_name};"
    end
  end
end

#login_triggers(table_name, password_col = 'password', email_col = 'email', function_name = nil, in_reverse = false) ⇒ Object 



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# File 'lib/better_record/migration.rb', line 36

def (table_name, password_col = 'password', email_col = 'email', function_name = nil, in_reverse = false)
  table_name = table_name.to_s

  reversible do |d|
    d.__send__(in_reverse ? :down : :up) do
      password_text = ''

      if !!password_col
        create_pwd_txt = ->(col) {
          "            IF (NEW.\#{col} IS NOT NULL)\n            AND (\n              (TG_OP = 'INSERT') OR ( NEW.\#{col} IS DISTINCT FROM OLD.\#{col} )\n            ) THEN\n              IF (NEW.\#{col} IS DISTINCT FROM 'CLEAR_EXISTING_PASSWORD_FOR_ROW') THEN\n                NEW.\#{col} = hash_password(NEW.\#{col});\n              ELSE\n                NEW.\#{col} = NULL;\n              END IF;\n            ELSE\n              IF (TG_OP IS DISTINCT FROM 'INSERT') THEN\n                NEW.\#{col} = OLD.\#{col};\n              ELSE\n                NEW.\#{col} = NULL;\n              END IF;\n            END IF;\n\n          SQL\n        }\n        password_text = password_col.is_a?(Array) ? (password_col.map {|pwd| create_pwd_txt.call(pwd)}).join(\"\\n\") : create_pwd_txt.call(password_col)\n      end\n\n      email_text = ''\n\n      if !!email_col\n        email_text = <<-SQL\n          IF (TG_OP = 'INSERT') OR ( NEW.\#{email_col} IS DISTINCT FROM OLD.\#{email_col} ) THEN\n            NEW.\#{email_col} = validate_email(NEW.\#{email_col});\n          END IF;\n\n        SQL\n      end\n\n      execute <<-SQL\n        CREATE OR REPLACE FUNCTION \#{function_name.presence || table_name.singularize}_changed()\n          RETURNS TRIGGER AS\n        $BODY$\n        BEGIN\n          \#{password_text}\n          \#{email_text}\n          RETURN NEW;\n        END;\n        $BODY$\n        language 'plpgsql';\n      SQL\n\n      execute <<-SQL\n        CREATE TRIGGER \#{function_name.presence || table_name}_on_insert\n        BEFORE INSERT ON \#{table_name}\n        FOR EACH ROW\n        EXECUTE PROCEDURE \#{function_name.presence || table_name.singularize}_changed();\n      SQL\n\n      execute <<-SQL\n        CREATE TRIGGER \#{function_name.presence || table_name}_on_update\n        BEFORE UPDATE ON \#{table_name}\n        FOR EACH ROW\n        EXECUTE PROCEDURE \#{function_name.presence || table_name.singularize}_changed();\n\n      SQL\n    end\n\n    d.__send__(in_reverse ? :up : :down) do\n      execute \"DROP TRIGGER IF EXISTS \#{function_name.presence || table_name}_on_insert ON \#{table_name};\"\n      execute \"DROP TRIGGER IF EXISTS \#{function_name.presence || table_name}_on_update ON \#{table_name};\"\n    end\n  end\nend\n"