diff options
| -rw-r--r-- | activemodel/CHANGELOG.md | 20 | ||||
| -rw-r--r-- | activemodel/lib/active_model/errors.rb | 57 | ||||
| -rw-r--r-- | activemodel/test/cases/errors_test.rb | 42 | ||||
| -rw-r--r-- | guides/source/active_record_validations.md | 58 |
4 files changed, 154 insertions, 23 deletions
diff --git a/activemodel/CHANGELOG.md b/activemodel/CHANGELOG.md index fb4b972282..175912b240 100644 --- a/activemodel/CHANGELOG.md +++ b/activemodel/CHANGELOG.md @@ -1,7 +1,25 @@ +* Add `ActiveModel::Errors#details` + + To be able to return type of used validator, one can now call `details` + on Errors instance: + + ```ruby + class User < ActiveRecord::Base + validates :name, presence: true + end + ``` + + ```ruby + user = User.new; user.valid?; user.errors.details + => {name: [{error: :blank}]} + ``` + + *Wojciech Wnętrzak* + * Change validates_acceptance_of to accept true by default. The default for validates_acceptance_of is now "1" and true. - In the past, only "1" was the default and you were required to add + In the past, only "1" was the default and you were required to add accept: true. * Remove deprecated `ActiveModel::Dirty#reset_#{attribute}` and diff --git a/activemodel/lib/active_model/errors.rb b/activemodel/lib/active_model/errors.rb index 477edbd120..912448e43c 100644 --- a/activemodel/lib/active_model/errors.rb +++ b/activemodel/lib/active_model/errors.rb @@ -23,7 +23,7 @@ module ActiveModel # attr_reader :errors # # def validate! - # errors.add(:name, "cannot be nil") if name.nil? + # errors.add(:name, :blank, message: "cannot be nil") if name.nil? # end # # # The following methods are needed to be minimally implemented @@ -58,8 +58,9 @@ module ActiveModel include Enumerable CALLBACKS_OPTIONS = [:if, :unless, :on, :allow_nil, :allow_blank, :strict] + MESSAGE_OPTIONS = [:message] - attr_reader :messages + attr_reader :messages, :details # Pass in the instance of the object that is using the errors object. # @@ -71,10 +72,12 @@ module ActiveModel def initialize(base) @base = base @messages = {} + @details = Hash.new { |details, attribute| details[attribute] = [] } end def initialize_dup(other) # :nodoc: @messages = other.messages.dup + @details = other.details.dup super end @@ -85,6 +88,7 @@ module ActiveModel # person.errors.full_messages # => [] def clear messages.clear + details.clear end # Returns +true+ if the error messages include an error for the given key @@ -126,6 +130,7 @@ module ActiveModel # person.errors.get(:name) # => nil def delete(key) messages.delete(key) + details.delete(key) end # When passed a symbol or a name of a method, returns an array of errors @@ -149,12 +154,12 @@ module ActiveModel # Yields the attribute and the error for that attribute. If the attribute # has more than one error message, yields once for each error message. # - # person.errors.add(:name, "can't be blank") + # person.errors.add(:name, :blank, message: "can't be blank") # person.errors.each do |attribute, error| # # Will yield :name and "can't be blank" # end # - # person.errors.add(:name, "must be specified") + # person.errors.add(:name, :not_specified, message: "must be specified") # person.errors.each do |attribute, error| # # Will yield :name and "can't be blank" # # then yield :name and "must be specified" @@ -167,9 +172,9 @@ module ActiveModel # Returns the number of error messages. # - # person.errors.add(:name, "can't be blank") + # person.errors.add(:name, :blank, message: "can't be blank") # person.errors.size # => 1 - # person.errors.add(:name, "must be specified") + # person.errors.add(:name, :not_specified, message: "must be specified") # person.errors.size # => 2 def size values.flatten.size @@ -193,8 +198,8 @@ module ActiveModel # Returns an array of error messages, with the attribute name included. # - # person.errors.add(:name, "can't be blank") - # person.errors.add(:name, "must be specified") + # person.errors.add(:name, :blank, message: "can't be blank") + # person.errors.add(:name, :not_specified, message: "must be specified") # person.errors.to_a # => ["name can't be blank", "name must be specified"] def to_a full_messages @@ -202,9 +207,9 @@ module ActiveModel # Returns the number of error messages. # - # person.errors.add(:name, "can't be blank") + # person.errors.add(:name, :blank, message: "can't be blank") # person.errors.count # => 1 - # person.errors.add(:name, "must be specified") + # person.errors.add(:name, :not_specified, message: "must be specified") # person.errors.count # => 2 def count to_a.size @@ -223,8 +228,8 @@ module ActiveModel # Returns an xml formatted representation of the Errors hash. # - # person.errors.add(:name, "can't be blank") - # person.errors.add(:name, "must be specified") + # person.errors.add(:name, :blank, message: "can't be blank") + # person.errors.add(:name, :not_specified, message: "must be specified") # person.errors.to_xml # # => # # <?xml version=\"1.0\" encoding=\"UTF-8\"?> @@ -261,17 +266,20 @@ module ActiveModel end end - # Adds +message+ to the error messages on +attribute+. More than one error - # can be added to the same +attribute+. If no +message+ is supplied, - # <tt>:invalid</tt> is assumed. + # Adds +message+ to the error messages and used validator type to +details+ on +attribute+. + # More than one error can be added to the same +attribute+. + # If no +message+ is supplied, <tt>:invalid</tt> is assumed. # # person.errors.add(:name) # # => ["is invalid"] - # person.errors.add(:name, 'must be implemented') + # person.errors.add(:name, :not_implemented, message: "must be implemented") # # => ["is invalid", "must be implemented"] # # person.errors.messages - # # => {:name=>["must be implemented", "is invalid"]} + # # => {:name=>["is invalid", "must be implemented"]} + # + # person.errors.details + # # => {:name=>[{error: :not_implemented}, {error: :invalid}]} # # If +message+ is a symbol, it will be translated using the appropriate # scope (see +generate_message+). @@ -293,16 +301,22 @@ module ActiveModel # +attribute+ should be set to <tt>:base</tt> if the error is not # directly associated with a single attribute. # - # person.errors.add(:base, "either name or email must be present") + # person.errors.add(:base, :name_or_email_blank, + # message: "either name or email must be present") # person.errors.messages # # => {:base=>["either name or email must be present"]} + # person.errors.details + # # => {:base=>[{error: :name_or_email_blank}]} def add(attribute, message = :invalid, options = {}) + message = message.call if message.respond_to?(:call) + detail = normalize_detail(attribute, message, options) message = normalize_message(attribute, message, options) if exception = options[:strict] exception = ActiveModel::StrictValidationFailed if exception == true raise exception, full_message(attribute, message) end + details[attribute.to_sym] << detail self[attribute] << message end @@ -339,6 +353,7 @@ module ActiveModel # person.errors.add :name, :blank # person.errors.added? :name, :blank # => true def added?(attribute, message = :invalid, options = {}) + message = message.call if message.respond_to?(:call) message = normalize_message(attribute, message, options) self[attribute].include? message end @@ -447,12 +462,14 @@ module ActiveModel case message when Symbol generate_message(attribute, message, options.except(*CALLBACKS_OPTIONS)) - when Proc - message.call else message end end + + def normalize_detail(attribute, message, options) + { error: message }.merge(options.except(*CALLBACKS_OPTIONS + MESSAGE_OPTIONS)) + end end # Raised when a validation cannot be corrected by end users and are considered diff --git a/activemodel/test/cases/errors_test.rb b/activemodel/test/cases/errors_test.rb index efedd9055f..9cfba9812b 100644 --- a/activemodel/test/cases/errors_test.rb +++ b/activemodel/test/cases/errors_test.rb @@ -323,4 +323,46 @@ class ErrorsTest < ActiveModel::TestCase person.errors.expects(:generate_message).with(:name, :blank, { message: 'custom' }) person.errors.add_on_blank :name, message: 'custom' end + + test "details returns added error detail" do + person = Person.new + person.errors.add(:name, :invalid) + assert_equal({ name: [{ error: :invalid }] }, person.errors.details) + end + + test "details returns added error detail with custom option" do + person = Person.new + person.errors.add(:name, :greater_than, count: 5) + assert_equal({ name: [{ error: :greater_than, count: 5 }] }, person.errors.details) + end + + test "details do not include message option" do + person = Person.new + person.errors.add(:name, :invalid, message: "is bad") + assert_equal({ name: [{ error: :invalid }] }, person.errors.details) + end + + test "dup duplicates details" do + errors = ActiveModel::Errors.new(Person.new) + errors.add(:name, :invalid) + errors_dup = errors.dup + errors_dup.add(:name, :taken) + assert_not_same errors_dup.details, errors.details + end + + test "delete removes details on given attribute" do + errors = ActiveModel::Errors.new(Person.new) + errors.add(:name, :invalid) + errors.delete(:name) + assert_empty errors.details[:name] + end + + test "clear removes details" do + person = Person.new + person.errors.add(:name, :invalid) + + assert_equal 1, person.errors.details.count + person.errors.clear + assert person.errors.details.empty? + end end diff --git a/guides/source/active_record_validations.md b/guides/source/active_record_validations.md index c9af70934a..84925072f2 100644 --- a/guides/source/active_record_validations.md +++ b/guides/source/active_record_validations.md @@ -227,8 +227,26 @@ end ``` We'll cover validation errors in greater depth in the [Working with Validation -Errors](#working-with-validation-errors) section. For now, let's turn to the -built-in validation helpers that Rails provides by default. +Errors](#working-with-validation-errors) section. + +### `errors.details` + +To check what validator type was used on invalid attribute, you can use +`errors.details[:attribute]`. It returns array of hashes where under `:error` + key you will find symbol of used validator. + +```ruby +class Person < ActiveRecord::Base + validates :name, presence: true +end + +>> person = Person.new +>> person.valid? +>> person.errors.details[:name] #=> [{error: :blank}] +``` + +Using `details` with custom validators are covered in the [Working with +Validation Errors](#working-with-validation-errors) section. Validation Helpers ------------------ @@ -1074,6 +1092,42 @@ Another way to do this is using `[]=` setter # => ["Name cannot contain the characters !@#%*()_-+="] ``` +### `errors.details` + +You can add validator type to details hash when using `errors.add` method. + +```ruby + class Person < ActiveRecord::Base + def a_method_used_for_validation_purposes + errors.add(:name, :invalid_characters) + end + end + + person = Person.create(name: "!@#") + + person.errors.details[:name] + # => [{error: :invalid_characters}] +``` + +To improve error details to contain not allowed characters set, you can +pass additional options to `errors.add` method. + +```ruby + class Person < ActiveRecord::Base + def a_method_used_for_validation_purposes + errors.add(:name, :invalid_characters, not_allowed: "!@#%*()_-+=") + end + end + + person = Person.create(name: "!@#") + + person.errors.details[:name] + # => [{error: :invalid_characters, not_allowed: "!@#%*()_-+="}] +``` + +All built in Rails validators populate details hash with corresponding +validator types. + ### `errors[:base]` You can add error messages that are related to the object's state as a whole, instead of being related to a specific attribute. You can use this method when you want to say that the object is invalid, no matter the values of its attributes. Since `errors[:base]` is an array, you can simply add a string to it and it will be used as an error message. |