diff options
Diffstat (limited to 'activemodel/lib/active_model/validations.rb')
| -rw-r--r-- | activemodel/lib/active_model/validations.rb | 65 |
1 files changed, 39 insertions, 26 deletions
diff --git a/activemodel/lib/active_model/validations.rb b/activemodel/lib/active_model/validations.rb index 3407c59e7a..d968609e67 100644 --- a/activemodel/lib/active_model/validations.rb +++ b/activemodel/lib/active_model/validations.rb @@ -2,30 +2,31 @@ require 'active_support/core_ext/array/extract_options' require 'active_support/core_ext/array/wrap' require 'active_support/core_ext/class/attribute' require 'active_support/core_ext/hash/keys' +require 'active_support/core_ext/hash/except' require 'active_model/errors' require 'active_model/validations/callbacks' module ActiveModel # == Active Model Validations - # + # # Provides a full validation framework to your objects. - # + # # A minimal implementation could be: - # + # # class Person # include ActiveModel::Validations - # + # # attr_accessor :first_name, :last_name # # validates_each :first_name, :last_name do |record, attr, value| # record.errors.add attr, 'starts with z.' if value.to_s[0] == ?z # end # end - # + # # Which provides you with the full standard validation stack that you # know from Active Record: - # + # # person = Person.new # person.valid? # => true # person.invalid? # => false @@ -34,11 +35,11 @@ module ActiveModel # person.valid? # => false # person.invalid? # => true # person.errors # => #<OrderedHash {:first_name=>["starts with z."]}> - # - # Note that ActiveModel::Validations automatically adds an +errors+ method - # to your instances initialized with a new ActiveModel::Errors object, so + # + # Note that <tt>ActiveModel::Validations</tt> automatically adds an +errors+ method + # to your instances initialized with a new <tt>ActiveModel::Errors</tt> object, so # there is no need for you to do this manually. - # + # module Validations extend ActiveSupport::Concern include ActiveSupport::Callbacks @@ -61,7 +62,7 @@ module ActiveModel # # class Person # include ActiveModel::Validations - # + # # attr_accessor :first_name, :last_name # # validates_each :first_name, :last_name do |record, attr, value| @@ -70,8 +71,8 @@ module ActiveModel # end # # Options: - # * <tt>:on</tt> - Specifies when this validation is active (default is - # <tt>:save</tt>, other options <tt>:create</tt>, <tt>:update</tt>). + # * <tt>:on</tt> - Specifies the context where this validation is active + # (e.g. <tt>:on => :create</tt> or <tt>:on => :custom_validation_context</tt>) # * <tt>:allow_nil</tt> - Skip validation if attribute is +nil+. # * <tt>:allow_blank</tt> - Skip validation if attribute is blank. # * <tt>:if</tt> - Specifies a method, proc or string to call to determine @@ -95,15 +96,15 @@ module ActiveModel # # class Comment # include ActiveModel::Validations - # + # # validate :must_be_friends # # def must_be_friends - # errors.add_to_base("Must be friends to leave a comment") unless commenter.friend_of?(commentee) + # errors.add(:base, "Must be friends to leave a comment") unless commenter.friend_of?(commentee) # end # end # - # Or with a block which is passed with the current record to be validated: + # With a block which is passed with the current record to be validated: # # class Comment # include ActiveModel::Validations @@ -113,7 +114,17 @@ module ActiveModel # end # # def must_be_friends - # errors.add_to_base("Must be friends to leave a comment") unless commenter.friend_of?(commentee) + # errors.add(:base, "Must be friends to leave a comment") unless commenter.friend_of?(commentee) + # end + # end + # + # Or with a block where self points to the current record to be validated: + # + # class Comment + # include ActiveModel::Validations + # + # validate do + # errors.add(:base, "Must be friends to leave a comment") unless commenter.friend_of?(commentee) # end # end # @@ -128,15 +139,17 @@ module ActiveModel set_callback(:validate, *args, &block) end - # List all validators that are being used to validate the model using + # List all validators that are being used to validate the model using # +validates_with+ method. def validators _validators.values.flatten.uniq end # List all validators that being used to validate a specific attribute. - def validators_on(attribute) - _validators[attribute.to_sym] + def validators_on(*attributes) + attributes.map do |attribute| + _validators[attribute.to_sym] + end.flatten end # Check if method is an attribute method or not. @@ -152,7 +165,7 @@ module ActiveModel end end - # Returns the Errors object that holds all information about attribute error messages. + # Returns the +Errors+ object that holds all information about attribute error messages. def errors @errors ||= Errors.new(self) end @@ -168,14 +181,14 @@ module ActiveModel self.validation_context = current_context end - # Performs the opposite of <tt>valid?</tt>. Returns true if errors were added, + # Performs the opposite of <tt>valid?</tt>. Returns true if errors were added, # false otherwise. def invalid?(context = nil) !valid?(context) end - # Hook method defining how an attribute value should be retrieved. By default - # this is assumed to be an instance named after the attribute. Override this + # Hook method defining how an attribute value should be retrieved. By default + # this is assumed to be an instance named after the attribute. Override this # method in subclasses should you need to retrieve the value for a given # attribute differently: # @@ -194,9 +207,9 @@ module ActiveModel alias :read_attribute_for_validation :send protected - + def run_validations! - _run_validate_callbacks + run_callbacks :validate errors.empty? end end |