Class: Mongoid::Persistence::RemoveEmbedded

Inherits:
Command show all
Defined in:
lib/mongoid/persistence/remove_embedded.rb

Overview

Remove is a persistence command responsible for deleting a document from the database.

The underlying query resembles the following MongoDB query:

collection.remove(
  { "_id" : 1 },
  false
);

Instance Attribute Summary

Attributes inherited from Command

#collection, #document, #klass, #options, #selector, #suppress, #validate

Instance Method Summary collapse

Methods inherited from Command

#initialize

Methods included from Safe

#safe_mode?

Constructor Details

This class inherits a constructor from Mongoid::Persistence::Command

Instance Method Details

#persist ⇒ Object

Remove the document from the database. If the parent is a new record, it will get removed in Ruby only. If the parent is not a new record then either an $unset or $set will occur, depending if it’s an embeds_one or embeds_many.

Example:

RemoveEmbedded.persist

Returns:

true or false, depending on if the removal passed.



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# File 'lib/mongoid/persistence/remove_embedded.rb', line 28

def persist
  parent = document._parent
  parent.remove_child(document) unless suppress?
  unless parent.new_record?
    update = { document._remover => removal_selector }
    collection.update(parent._selector, update, options.merge(:multi => false))
  end; true
end