Class: Mongoid::Relations::NestedBuilder

Inherits:
Object
  • Object
show all
Defined in:
lib/mongoid/relations/nested_builder.rb

Overview

This is the superclass for builders that are in charge of handling creation, deletion, and updates of documents through that ever so lovely #accepts_nested_attributes_for.

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#attributesObject

Returns the value of attribute attributes



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# File 'lib/mongoid/relations/nested_builder.rb', line 9

def attributes
  @attributes
end

#existingObject

Returns the value of attribute existing



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# File 'lib/mongoid/relations/nested_builder.rb', line 9

def existing
  @existing
end

#metadataObject

Returns the value of attribute metadata



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# File 'lib/mongoid/relations/nested_builder.rb', line 9

def 
  @metadata
end

#optionsObject

Returns the value of attribute options



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# File 'lib/mongoid/relations/nested_builder.rb', line 9

def options
  @options
end

Instance Method Details

#allow_destroy?true, false

Determines if destroys are allowed for this document.

Examples:

Do we allow a destroy?

builder.allow_destroy?

Returns:

  • (true, false)

    True if the allow destroy option was set.

Since:

  • 2.0.0.rc.1



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# File 'lib/mongoid/relations/nested_builder.rb', line 19

def allow_destroy?
  options[:allow_destroy] || false
end

#convert_id(klass, id) ⇒ BSON::ObjectId, ...

Convert an id to its appropriate type.

Examples:

Convert the id.

builder.convert_id(Person, "4d371b444835d98b8b000010")

Parameters:

  • klass (Class)

    The class we're trying to convert for.

  • id (String)

    The id, usually coming from the form.

Returns:

Since:

  • 2.0.0.rc.6



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# File 'lib/mongoid/relations/nested_builder.rb', line 69

def convert_id(klass, id)
  klass.using_object_ids? ? BSON::ObjectId.mongoize(id) : id
end

#reject?(document, attrs) ⇒ true, false

Returns the reject if option defined with the macro.

Examples:

Is there a reject proc?

builder.reject?

Parameters:

  • The

    parent document of the relation

  • attrs (Hash)

    The attributes to check for rejection.

Returns:

  • (true, false)

    True and call proc or method if rejectable, false if not.

Since:

  • 2.0.0.rc.1



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# File 'lib/mongoid/relations/nested_builder.rb', line 34

def reject?(document, attrs)
  case callback = options[:reject_if]
  when Symbol
    document.method(callback).arity == 0 ? document.send(callback) : document.send(callback, attrs)
  when Proc
    callback.call(attrs)
  else
   false
  end
end

#update_only?true, false

Determines if only updates can occur. Only valid for one-to-one relations.

Examples:

Is this update only?

builder.update_only?

Returns:

  • (true, false)

    True if the update_only option was set.

Since:

  • 2.0.0.rc.1



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# File 'lib/mongoid/relations/nested_builder.rb', line 54

def update_only?
  options[:update_only] || false
end