instance method
attribute_present?
Ruby on Rails edge
Since v4.0.13Signature
attribute_present?(attr_name)Returns true if the specified attribute has been set by the user or by a database load and is neither nil nor empty? (the latter only applies to objects that respond to empty?, most notably Strings). Otherwise, false. Note that it always returns true with boolean attributes.
“‘ class Task < ActiveRecord::Base end
task = Task.new(title: ”, is_done: false) task.attribute_present?(:title) # => false task.attribute_present?(:is_done) # => true task.title = ‘Buy milk’ task.is_done = true task.attribute_present?(:title) # => true task.attribute_present?(:is_done) # => true “‘
Parameters
-
attr_namereq
Source
# File activerecord/lib/active_record/attribute_methods.rb, line 444
def attribute_present?(attr_name)
value = read_attribute(attr_name)
!value.nil? && !(value.respond_to?(:empty?) && value.empty?)
end
Defined in activerecord/lib/active_record/attribute_methods.rb line 444
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Defined in ActiveRecord::AttributeMethods