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Module: Mongoid::Attributes::Readonly

Relationships & Source Files
Namespace Children
Modules:
ClassMethods
Extension / Inclusion / Inheritance Descendants
Included In:
::Mongoid::Attributes, ::Mongoid::Composable, ::Mongoid::Document, ::Mongoid::GlobalDiscriminatorKeyAssignment::InvalidFieldHost
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, ActiveSupport::Concern
Defined in: lib/mongoid/attributes/readonly.rb

Overview

This module defines behavior for readonly attributes.

Instance Method Summary

DSL Calls

included

[ GitHub ] 


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# File 'lib/mongoid/attributes/readonly.rb', line 11

included do
  class_attribute :readonly_attributes
  self.readonly_attributes = ::Set.new
end

Instance Method Details

#_loaded?(name) ⇒ Boolean (private)

[ GitHub ] 

  


# File 'lib/mongoid/attributes/readonly.rb', line 40



def _loaded?(name)
  __selected_fields.nil? || projected_field?(name)
end


  








  

    #as_writable_attribute!(name, value = :nil)   (private)
  

  [ GitHub ]


  

  


# File 'lib/mongoid/attributes/readonly.rb', line 31



def as_writable_attribute!(name, value = :nil)
  normalized_name = database_field_name(name)
  if attribute_writable?(normalized_name)
    yield(normalized_name)
  else
    raise Errors::ReadonlyAttribute.new(name, value)
  end
end


  








  

    #attribute_writable?(name)  ⇒ true | false 
  



  

    

Are we able to write the attribute with the provided name?


  





    

    
Examples:

        


Can we write the attribute?



      
model.attribute_writable?(:title)

  


Parameters:



Returns:


    
  
  • 
    (true | false)
—    
    

    If the document is new, or if the field is not readonly.
    

    
  
    • 





  [ GitHub ]


  

  


# File 'lib/mongoid/attributes/readonly.rb', line 25



def attribute_writable?(name)
  new_record? || (!readonly_attributes.include?(name) && _loaded?(name))
end


  








  

    #projected_field?(name)  ⇒ Boolean  (private)
  



  

    
  





  


  [ GitHub ]


  

  


# File 'lib/mongoid/attributes/readonly.rb', line 44



def projected_field?(name)
  projected = (__selected_fields || {}).keys.select { |f| __selected_fields[f] == 1 }
  projected.empty? || projected.include?(name)
end