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, #validate

Instance Method Summary collapse

Methods inherited from Command

#initialize

Constructor Details

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

Instance Method Details

#persist ⇒ Object

Insert the new document in the database. If the document’s parent is a new record, we will call save on the parent, otherwise we will $push the document onto the parent.

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 30

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