Class: Mongoid::Persistence::Operations::Embedded::Remove

Inherits:
Object
  • Object
show all
Includes:
Atomic::Positionable, Deletion, Mongoid::Persistence::Operations
Defined in:
lib/mongoid/persistence/operations/embedded/remove.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 included from Mongoid::Persistence::Operations

#conflicts, #document, #options

Instance Method Summary collapse

Methods included from Atomic::Positionable

#positionally

Methods included from Mongoid::Persistence::Operations

#collection, #deletes, #initialize, insert, #inserts, #notifying_parent?, #parent, remove, #selector, update, #updates, upsert, #validating?

Methods included from Deletion

#prepare

Instance Method Details

#persist ⇒ true

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.

Examples:

Remove an embedded document.

RemoveEmbedded.persist

Returns:

  • (true) —

    Always true.



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# File 'lib/mongoid/persistence/operations/embedded/remove.rb', line 30

def persist
  prepare do |doc|
    parent.remove_child(doc) if notifying_parent?
    if parent.persisted?
      selector = parent.atomic_selector
      collection.find(selector).update(positionally(selector, deletes))
    end
  end
end