diff options
Diffstat (limited to 'activerecord/lib/active_record/attribute_methods.rb')
| -rw-r--r-- | activerecord/lib/active_record/attribute_methods.rb | 114 |
1 files changed, 67 insertions, 47 deletions
diff --git a/activerecord/lib/active_record/attribute_methods.rb b/activerecord/lib/active_record/attribute_methods.rb index 889c80386f..ced15bc330 100644 --- a/activerecord/lib/active_record/attribute_methods.rb +++ b/activerecord/lib/active_record/attribute_methods.rb @@ -1,5 +1,4 @@ require 'active_support/core_ext/enumerable' -require 'active_support/deprecation' module ActiveRecord # = Active Record Attribute Methods @@ -16,19 +15,6 @@ module ActiveRecord include TimeZoneConversion include Dirty include Serialization - - # Returns the value of the attribute identified by <tt>attr_name</tt> after it has been typecast (for example, - # "2004-12-12" in a data column is cast to a date object, like Date.new(2004, 12, 12)). - # (Alias for the protected read_attribute method). - def [](attr_name) - read_attribute(attr_name) - end - - # Updates the attribute identified by <tt>attr_name</tt> with the specified +value+. - # (Alias for the protected write_attribute method). - def []=(attr_name, value) - write_attribute(attr_name, value) - end end module ClassMethods @@ -49,14 +35,6 @@ module ActiveRecord @attribute_methods_generated ||= false end - # We will define the methods as instance methods, but will call them as singleton - # methods. This allows us to use method_defined? to check if the method exists, - # which is fast and won't give any false positives from the ancestors (because - # there are no ancestors). - def generated_external_attribute_methods - @generated_external_attribute_methods ||= Module.new { extend self } - end - def undefine_attribute_methods super if attribute_methods_generated? @attribute_methods_generated = false @@ -157,7 +135,9 @@ module ActiveRecord # Returns a hash of all the attributes with their names as keys and the values of the attributes as values. def attributes - Hash[@attributes.map { |name, _| [name, read_attribute(name)] }] + attribute_names.each_with_object({}) { |name, attrs| + attrs[name] = read_attribute(name) + } end # Returns an <tt>#inspect</tt>-like string for the value of the @@ -189,7 +169,7 @@ module ActiveRecord # nil nor empty? (the latter only applies to objects that respond to empty?, most notably Strings). def attribute_present?(attribute) value = read_attribute(attribute) - !value.nil? || (value.respond_to?(:empty?) && !value.empty?) + !value.nil? && !(value.respond_to?(:empty?) && value.empty?) end # Returns the column object for the named attribute. @@ -198,6 +178,19 @@ module ActiveRecord self.class.columns_hash[name.to_s] end + # Returns the value of the attribute identified by <tt>attr_name</tt> after it has been typecast (for example, + # "2004-12-12" in a data column is cast to a date object, like Date.new(2004, 12, 12)). + # (Alias for the protected read_attribute method). + def [](attr_name) + read_attribute(attr_name) + end + + # Updates the attribute identified by <tt>attr_name</tt> with the specified +value+. + # (Alias for the protected write_attribute method). + def []=(attr_name, value) + write_attribute(attr_name, value) + end + protected def clone_attributes(reader_method = :read_attribute, attributes = {}) @@ -214,37 +207,64 @@ module ActiveRecord value end - # Returns a copy of the attributes hash where all the values have been safely quoted for use in - # an Arel insert/update method. - def arel_attributes_values(include_primary_key = true, include_readonly_attributes = true, attribute_names = @attributes.keys) - attrs = {} - klass = self.class - arel_table = klass.arel_table + def arel_attributes_with_values_for_create(pk_attribute_allowed) + arel_attributes_with_values(attributes_for_create(pk_attribute_allowed)) + end - attribute_names.each do |name| - if (column = column_for_attribute(name)) && (include_primary_key || !column.primary) + def arel_attributes_with_values_for_update(attribute_names) + arel_attributes_with_values(attributes_for_update(attribute_names)) + end - if include_readonly_attributes || !self.class.readonly_attributes.include?(name) + def attribute_method?(attr_name) + defined?(@attributes) && @attributes.include?(attr_name) + end - value = if klass.serialized_attributes.include?(name) - @attributes[name].serialized_value - else - # FIXME: we need @attributes to be used consistently. - # If the values stored in @attributes were already type - # casted, this code could be simplified - read_attribute(name) - end + private - attrs[arel_table[name]] = value - end - end - end + # Returns a Hash of the Arel::Attributes and attribute values that have been + # type casted for use in an Arel insert/update method. + def arel_attributes_with_values(attribute_names) + attrs = {} + arel_table = self.class.arel_table + attribute_names.each do |name| + attrs[arel_table[name]] = typecasted_attribute_value(name) + end attrs end - def attribute_method?(attr_name) - attr_name == 'id' || (defined?(@attributes) && @attributes.include?(attr_name)) + # Filters the primary keys and readonly attributes from the attribute names. + def attributes_for_update(attribute_names) + attribute_names.select do |name| + column_for_attribute(name) && !pk_attribute?(name) && !readonly_attribute?(name) + end + end + + # Filters out the primary keys, from the attribute names, when the primary + # key is to be generated (e.g. the id attribute has no value). + def attributes_for_create(pk_attribute_allowed) + @attributes.keys.select do |name| + column_for_attribute(name) && (pk_attribute_allowed || !pk_attribute?(name)) + end + end + + def readonly_attribute?(name) + self.class.readonly_attributes.include?(name) + end + + def pk_attribute?(name) + column_for_attribute(name).primary + end + + def typecasted_attribute_value(name) + if self.class.serialized_attributes.include?(name) + @attributes[name].serialized_value + else + # FIXME: we need @attributes to be used consistently. + # If the values stored in @attributes were already typecasted, this code + # could be simplified + read_attribute(name) + end end end end |