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author | Emilio Tagua <miloops@gmail.com> | 2009-06-02 12:36:36 -0300 |
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committer | Emilio Tagua <miloops@gmail.com> | 2009-06-02 12:36:36 -0300 |
commit | fd3c55f09fdfb45c33a5383af2c0b9ddf8f63e90 (patch) | |
tree | 89f6b8eeae81ba9e9f3c43667b234b64a776e649 /activerecord/lib/active_record/validations/associated.rb | |
parent | 5255a81b808c2c947d58df979e6436b1fe1d8157 (diff) | |
parent | 196f780e30fcece25e4d09c12f9b9f7374ebed29 (diff) | |
download | rails-fd3c55f09fdfb45c33a5383af2c0b9ddf8f63e90.tar.gz rails-fd3c55f09fdfb45c33a5383af2c0b9ddf8f63e90.tar.bz2 rails-fd3c55f09fdfb45c33a5383af2c0b9ddf8f63e90.zip |
Merge commit 'rails/master'
Conflicts:
activerecord/lib/active_record.rb
Diffstat (limited to 'activerecord/lib/active_record/validations/associated.rb')
-rw-r--r-- | activerecord/lib/active_record/validations/associated.rb | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/validations/associated.rb b/activerecord/lib/active_record/validations/associated.rb new file mode 100644 index 0000000000..92f47d770f --- /dev/null +++ b/activerecord/lib/active_record/validations/associated.rb @@ -0,0 +1,46 @@ +module ActiveRecord + module Validations + module ClassMethods + # Validates whether the associated object or objects are all valid themselves. Works with any kind of association. + # + # class Book < ActiveRecord::Base + # has_many :pages + # belongs_to :library + # + # validates_associated :pages, :library + # end + # + # Warning: If, after the above definition, you then wrote: + # + # class Page < ActiveRecord::Base + # belongs_to :book + # + # validates_associated :book + # end + # + # this would specify a circular dependency and cause infinite recursion. + # + # NOTE: This validation will not fail if the association hasn't been assigned. If you want to ensure that the association + # is both present and guaranteed to be valid, you also need to use +validates_presence_of+. + # + # Configuration options: + # * <tt>:message</tt> - A custom error message (default is: "is invalid") + # * <tt>:on</tt> - Specifies when this validation is active (default is <tt>:save</tt>, other options <tt>:create</tt>, <tt>:update</tt>). + # * <tt>:if</tt> - Specifies a method, proc or string to call to determine if the validation should + # occur (e.g. <tt>:if => :allow_validation</tt>, or <tt>:if => Proc.new { |user| user.signup_step > 2 }</tt>). The + # method, proc or string should return or evaluate to a true or false value. + # * <tt>:unless</tt> - Specifies a method, proc or string to call to determine if the validation should + # not occur (e.g. <tt>:unless => :skip_validation</tt>, or <tt>:unless => Proc.new { |user| user.signup_step <= 2 }</tt>). The + # method, proc or string should return or evaluate to a true or false value. + def validates_associated(*attr_names) + configuration = attr_names.extract_options! + + validates_each(attr_names, configuration) do |record, attr_name, value| + unless (value.is_a?(Array) ? value : [value]).collect { |r| r.nil? || r.valid? }.all? + record.errors.add(attr_name, :invalid, :default => configuration[:message], :value => value) + end + end + end + end + end +end
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