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-rw-r--r--activerecord/lib/active_record/attribute_assignment.rb18
1 files changed, 13 insertions, 5 deletions
diff --git a/activerecord/lib/active_record/attribute_assignment.rb b/activerecord/lib/active_record/attribute_assignment.rb
index 30fa2c8ba5..40e2918777 100644
--- a/activerecord/lib/active_record/attribute_assignment.rb
+++ b/activerecord/lib/active_record/attribute_assignment.rb
@@ -11,6 +11,15 @@ module ActiveRecord
# If the passed hash responds to <tt>permitted?</tt> method and the return value
# of this method is +false+ an <tt>ActiveModel::ForbiddenAttributesError</tt>
# exception is raised.
+ #
+ # cat = Cat.new(name: "Gorby", status: "yawning")
+ # cat.attributes # => { "name" => "Gorby", "status" => "yawning", "created_at" => nil, "updated_at" => nil}
+ # cat.assign_attributes(status: "sleeping")
+ # cat.attributes # => { "name" => "Gorby", "status" => "sleeping", "created_at" => nil, "updated_at" => nil }
+ #
+ # New attributes will be persisted in the database when the object is saved.
+ #
+ # Aliased to <tt>attributes=</tt>.
def assign_attributes(new_attributes)
if !new_attributes.respond_to?(:stringify_keys)
raise ArgumentError, "When assigning attributes, you must pass a hash as an argument."
@@ -117,8 +126,8 @@ module ActiveRecord
def read_value
return if values.values.compact.empty?
- @column = object.class.reflect_on_aggregation(name.to_sym) || object.column_for_attribute(name)
- klass = column.klass
+ @column = object.column_for_attribute(name)
+ klass = column ? column.klass : nil
if klass == Time
read_time
@@ -140,7 +149,7 @@ module ActiveRecord
end
def read_time
- # If column is a :time (and not :date or :timestamp) there is no need to validate if
+ # If column is a :time (and not :date or :datetime) there is no need to validate if
# there are year/month/day fields
if column.type == :time
# if the column is a time set the values to their defaults as January 1, 1970, but only if they're nil
@@ -177,8 +186,7 @@ module ActiveRecord
positions = (1..max_position)
validate_required_parameters!(positions)
- set_values = values.values_at(*positions)
- klass.new(*set_values)
+ values.slice(*positions)
end
# Checks whether some blank date parameter exists. Note that this is different