instance method `attribute_present?`

Ruby on Rails 6.1.7.10

Since v4.0.13

Available in: v4.0.13 v4.1.16 v4.2.9 v5.2.8.1 v6.0.6 v6.1.7.10 v7.0.10 v7.1.6 v7.2.3 v8.0.4 v8.1.2

Compare with:

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_name req

Source

# File activerecord/lib/active_record/attribute_methods.rb, line 306
    def attribute_present?(attr_name)
      attr_name = attr_name.to_s
      attr_name = self.class.attribute_aliases[attr_name] || 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 306 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveRecord::AttributeMethods

Signature

Parameters