module ActiveRecord::Persistence
Active Record Persistence
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Active Record Persistence
¶ ↑
Active Record Persistence
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Public Instance Methods
excluded_deltas()
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# File lib/delta_attributes3_2/main.rb, line 31 def excluded_deltas @_excluded_deltas ||= Set.new end
force_clobber(attr_name, value)
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# File lib/delta_attributes3_2/main.rb, line 35 def force_clobber(attr_name, value) self.excluded_deltas.add(attr_name.to_s.intern) send("#{attr_name}=", value) end
update(attribute_names = @attributes.keys)
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Calls superclass method
# File lib/delta_attributes3_2/main.rb, line 13 def update(attribute_names = @attributes.keys) return super(attribute_names) if self.new_record? attributes_with_values = arel_attributes_values(false, false, attribute_names) return 0 if attributes_with_values.empty? attributes = { } @changed_attributes.each do |attribute_name, value| if self.class.delta_attributes.include?(attribute_name.intern) && !self.excluded_deltas.include?(attribute_name.intern) attributes[attribute_name] = value end end klass = self.class stmt = klass.unscoped.where(klass.arel_table[klass.primary_key].eq(id)).arel.compile_full_update(attributes_with_values, attributes) klass.connection.update stmt end
update_record(attribute_names = @attributes.keys)
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Updates the associated record with values matching those of the instance attributes. Returns the number of affected rows.
# File lib/delta_attributes4/persistence.rb, line 7 def update_record(attribute_names = @attributes.keys) attributes_with_values = arel_attributes_with_values_for_update(attribute_names) if attributes_with_values.empty? 0 else klass = self.class column_hash = klass.connection.schema_cache.columns_hash klass.table_name db_columns_with_values = attributes_with_values.map { |attr,value| real_column = column_hash[attr.name] v = value if self.class.respond_to?(:delta_attributes) && self.class.delta_attributes.include?(attr.name) if @changed_attributes.include?(attr.name) v = value - @changed_attributes[attr.name] end end [real_column, v] } bind_attrs = attributes_with_values.dup bind_attrs.keys.each_with_index do |column, i| real_column = db_columns_with_values[i].first bind_attrs[column] = klass.connection.substitute_at(real_column, i) end stmt = klass.unscoped.where(klass.arel_table[klass.primary_key].eq(id_was || id)).arel.compile_update(bind_attrs) klass.connection.update stmt, 'SQL', db_columns_with_values end end