#primary_key
[ GitHub ]# File 'activerecord/lib/active_record/table_metadata.rb', line 10
def primary_key klass&.primary_key end
123456789_123456789_123456789_123456789_123456789_
Relationships & Source Files | |
Inherits: | Object |
Defined in: | activerecord/lib/active_record/table_metadata.rb |
TableMetadata
# File 'activerecord/lib/active_record/table_metadata.rb', line 5
def initialize(klass, arel_table) @klass = klass @arel_table = arel_table end
# File 'activerecord/lib/active_record/table_metadata.rb', line 63
attr_reader :arel_table
# File 'activerecord/lib/active_record/table_metadata.rb', line 66
attr_reader :klass
Alias for #reflect_on_aggregation.
# File 'activerecord/lib/active_record/table_metadata.rb', line 53
alias :aggregated_with? :reflect_on_aggregation
# File 'activerecord/lib/active_record/table_metadata.rb', line 26
def associated_table(table_name) reflection = klass._reflect_on_association(table_name) || klass._reflect_on_association(table_name.singularize) if !reflection && table_name == arel_table.name return self end if reflection association_klass = reflection.klass unless reflection.polymorphic? elsif block_given? association_klass = yield table_name end if association_klass arel_table = association_klass.arel_table arel_table = arel_table.alias(table_name) if arel_table.name != table_name TableMetadata.new(association_klass, arel_table) else type_caster = TypeCaster::Connection.new(klass, table_name) arel_table = Arel::Table.new(table_name, type_caster: type_caster) TableMetadata.new(nil, arel_table) end end
# File 'activerecord/lib/active_record/table_metadata.rb', line 22
def associated_with(table_name) klass&._reflect_on_association(table_name) end
Boolean
# File 'activerecord/lib/active_record/table_metadata.rb', line 18
def has_column?(column_name) klass&.columns_hash&.key?(column_name) end
# File 'activerecord/lib/active_record/table_metadata.rb', line 55
def predicate_builder if klass klass.predicate_builder.with(self) else PredicateBuilder.new(self) end end
# File 'activerecord/lib/active_record/table_metadata.rb', line 10
def primary_key klass&.primary_key end
# File 'activerecord/lib/active_record/table_metadata.rb', line 50
def reflect_on_aggregation(aggregation_name) klass&.reflect_on_aggregation(aggregation_name) end
# File 'activerecord/lib/active_record/table_metadata.rb', line 14
def type(column_name) arel_table.type_for_attribute(column_name) end