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author | Francesco Rodriguez <lrodriguezsanc@gmail.com> | 2012-10-21 19:20:18 -0500 |
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committer | Francesco Rodriguez <lrodriguezsanc@gmail.com> | 2012-10-21 19:20:18 -0500 |
commit | bc3f960c0f3b3d88f024969f4606317040cb2332 (patch) | |
tree | 89d2d4ffd49da6d6fb94bc52ec3b0ede14b33022 | |
parent | 7fbb21dc802c9eb96d30c6231e2b3dc473dbe9dd (diff) | |
download | rails-bc3f960c0f3b3d88f024969f4606317040cb2332.tar.gz rails-bc3f960c0f3b3d88f024969f4606317040cb2332.tar.bz2 rails-bc3f960c0f3b3d88f024969f4606317040cb2332.zip |
improve AR::AttributeMethods documentation [ci skip]
-rw-r--r-- | activerecord/lib/active_record/attribute_methods.rb | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/activerecord/lib/active_record/attribute_methods.rb b/activerecord/lib/active_record/attribute_methods.rb index ca95329186..0118bbd6b6 100644 --- a/activerecord/lib/active_record/attribute_methods.rb +++ b/activerecord/lib/active_record/attribute_methods.rb @@ -215,10 +215,10 @@ module ActiveRecord # person = Person.create!(name: 'David Heinemeier Hansson ' * 3) # # person.attribute_for_inspect(:name) - # # => '"David Heinemeier Hansson David Heinemeier Hansson D..."' + # # => "\"David Heinemeier Hansson David Heinemeier Hansson D...\"" # # person.attribute_for_inspect(:created_at) - # # => '"2009-01-12 04:48:57"' + # # => "\"2012-10-22 00:15:07\"" def attribute_for_inspect(attr_name) value = read_attribute(attr_name) @@ -234,14 +234,18 @@ module ActiveRecord # Returns +true+ if the specified +attribute+ has been set by the user or by a # database load and is neither +nil+ nor <tt>empty?</tt> (the latter only applies # to objects that respond to <tt>empty?</tt>, most notably Strings). Otherwise, +false+. + # Note that it always returns +true+ with boolean attributes. # - # class Person < ActiveRecord::Base + # class Task < ActiveRecord::Base # end # - # person = Person.new(name: '') - # person.attribute_present?(:name) # => false + # person = Task.new(title: '', is_done: false) + # person.attribute_present?(:title) # => false + # person.attribute_present?(:is_done) # => true # person.name = 'Francesco' - # person.attribute_present?(:name) # => true + # person.is_done = true + # person.attribute_present?(:title) # => true + # person.attribute_present?(:is_done) # => true def attribute_present?(attribute) value = read_attribute(attribute) !value.nil? && !(value.respond_to?(:empty?) && value.empty?) |