ActiveResource::Errors

• activeresource/lib/active_resource/validations.rb

Active Resource validation is reported to and from this object, which is used by Base#save to determine whether the object in a valid state to be saved. See usage example in Validations.

• []
• add
• add_to_base
• clear
• count
• each
• each_full
• from_xml
• full_messages
• invalid?
• length
• on
• on_base
• size

• Enumerable

Alias for on

Adds an error to an Active Resource object‘s attribute (named for the attribute parameter) with the error message in msg.

Examples

  my_resource = Node.find(1)
  my_resource.errors.add('name', 'can not be "base"') if my_resource.name == 'base'
  my_resource.errors.on('name')
  # => 'can not be "base"!'

  my_resource.errors.add('desc', 'can not be blank') if my_resource.desc == ''
  my_resource.valid?
  # => false
  my_resource.errors.on('desc')
  # => 'can not be blank!'

Add an error to the base Active Resource object rather than an attribute.

Examples

  my_folder = Folder.find(1)
  my_folder.errors.add_to_base("You can't edit an existing folder")
  my_folder.errors.on_base
  # => "You can't edit an existing folder"

  my_folder.errors.add_to_base("This folder has been tagged as frozen")
  my_folder.valid?
  # => false
  my_folder.errors.on_base
  # => ["You can't edit an existing folder", "This folder has been tagged as frozen"]

Alias for size

Yields each attribute and associated message per error added.

Examples

  my_person = Person.new(params[:person])

  my_person.errors.add('login', 'can not be empty') if my_person.login == ''
  my_person.errors.add('password', 'can not be empty') if my_person.password == ''
  messages = ''
  my_person.errors.each {|attr, msg| messages += attr.humanize + " " + msg + "<br />"}
  messages
  # => "Login can not be empty<br />Password can not be empty<br />"

Yields each full error message added. So Person.errors.add("first_name", "can‘t be empty") will be returned through iteration as "First name can‘t be empty".

Examples

  my_person = Person.new(params[:person])

  my_person.errors.add('login', 'can not be empty') if my_person.login == ''
  my_person.errors.add('password', 'can not be empty') if my_person.password == ''
  messages = ''
  my_person.errors.each_full {|msg| messages += msg + "<br/>"}
  messages
  # => "Login can not be empty<br />Password can not be empty<br />"

Grabs errors from the XML response.

Returns all the full error messages in an array.

Examples

  my_person = Person.new(params[:person])

  my_person.errors.add('login', 'can not be empty') if my_person.login == ''
  my_person.errors.add('password', 'can not be empty') if my_person.password == ''
  messages = ''
  my_person.errors.full_messages.each {|msg| messages += msg + "<br/>"}
  messages
  # => "Login can not be empty<br />Password can not be empty<br />"

Returns true if the specified attribute has errors associated with it.

Examples

  my_resource = Disk.find(1)
  my_resource.errors.add('location', 'must be Main') unless my_resource.location == 'Main'
  my_resource.errors.on('location')
  # => 'must be Main!'

  my_resource.errors.invalid?('location')
  # => true
  my_resource.errors.invalid?('name')
  # => false

Alias for size

A method to return the errors associated with attribute, which returns nil, if no errors are associated with the specified attribute, the error message if one error is associated with the specified attribute, or an array of error messages if more than one error is associated with the specified attribute.

Examples

  my_person = Person.new(params[:person])
  my_person.errors.on('login')
  # => nil

  my_person.errors.add('login', 'can not be empty') if my_person.login == ''
  my_person.errors.on('login')
  # => 'can not be empty'

  my_person.errors.add('login', 'can not be longer than 10 characters') if my_person.login.length > 10
  my_person.errors.on('login')
  # => ['can not be empty', 'can not be longer than 10 characters']

A method to return errors assigned to base object through add_to_base, which returns nil, if no errors are associated with the specified attribute, the error message if one error is associated with the specified attribute, or an array of error messages if more than one error is associated with the specified attribute.

Examples

  my_account = Account.find(1)
  my_account.errors.on_base
  # => nil

  my_account.errors.add_to_base("This account is frozen")
  my_account.errors.on_base
  # => "This account is frozen"

  my_account.errors.add_to_base("This account has been closed")
  my_account.errors.on_base
  # => ["This account is frozen", "This account has been closed"]

Returns the total number of errors added. Two errors added to the same attribute will be counted as such with this as well.

Examples

  my_person = Person.new(params[:person])
  my_person.errors.size
  # => 0

  my_person.errors.add('login', 'can not be empty') if my_person.login == ''
  my_person.errors.add('password', 'can not be empty') if my_person.password == ''
  my_person.error.size
  # => 2