module Mongoid::Criteria::Modifiable

Public Instance Methods

build(attrs = {}, &block) click to toggle source

Build a document given the selector and return it. Complex criteria, such as $in and $or operations will get ignored.

@example build the document.

Person.where(:title => "Sir").build

@example Build with selectors getting ignored.

Person.where(:age.gt => 5).build

@return [ Document ] A non-persisted document.

@since 2.0.0

# File lib/mongoid/criteria/modifiable.rb, line 17
def build(attrs = {}, &block)
  create_document(:new, attrs, &block)
end
Also aliased as: new
create(attrs = {}, &block) click to toggle source

Create a document in the database given the selector and return it. Complex criteria, such as $in and $or operations will get ignored.

@example Create the document.

Person.where(:title => "Sir").create

@example Create with selectors getting ignored.

Person.where(:age.gt => 5).create

@return [ Document ] A newly created document.

@since 2.0.0.rc.1

# File lib/mongoid/criteria/modifiable.rb, line 34
def create(attrs = {}, &block)
  create_document(:create, attrs, &block)
end
create!(attrs = {}, &block) click to toggle source

Create a document in the database given the selector and return it. Complex criteria, such as $in and $or operations will get ignored. If validation fails, an error will be raised.

@example Create the document.

Person.where(:title => "Sir").create

@example Create with selectors getting ignored.

Person.where(:age.gt => 5).create

@raise [ Errors::Validations ] on a validation error.

@return [ Document ] A newly created document.

@since 3.0.0

# File lib/mongoid/criteria/modifiable.rb, line 53
def create!(attrs = {}, &block)
  create_document(:create!, attrs, &block)
end
find_or_create_by(attrs = {}, &block) click to toggle source

Find the first Document given the conditions, or creates a new document with the conditions that were supplied.

@example Find or create the document.

Person.find_or_create_by(:attribute => "value")

@param [ Hash ] attrs The attributes to check.

@return [ Document ] A matching or newly created document.

# File lib/mongoid/criteria/modifiable.rb, line 66
def find_or_create_by(attrs = {}, &block)
  find_or(:create, attrs, &block)
end
find_or_create_by!(attrs = {}, &block) click to toggle source

Find the first Document given the conditions, or creates a new document with the conditions that were supplied. If validation fails an exception will be raised.

@example Find or create the document.

Person.find_or_create_by!(:attribute => "value")

@param [ Hash ] attrs The attributes to check.

@raise [ Errors::Validations ] on validation error.

@return [ Document ] A matching or newly created document.

# File lib/mongoid/criteria/modifiable.rb, line 82
def find_or_create_by!(attrs = {}, &block)
  find_or(:create!, attrs, &block)
end
find_or_initialize_by(attrs = {}, &block) click to toggle source

Find the first Document given the conditions, or initializes a new document with the conditions that were supplied.

@example Find or initialize the document.

Person.find_or_initialize_by(:attribute => "value")

@param [ Hash ] attrs The attributes to check.

@return [ Document ] A matching or newly initialized document.

# File lib/mongoid/criteria/modifiable.rb, line 95
def find_or_initialize_by(attrs = {}, &block)
  find_or(:new, attrs, &block)
end
first_or_create(attrs = nil, &block) click to toggle source

Find the first Document, or creates a new document with the conditions that were supplied plus attributes.

@example First or create the document.

Person.where(name: "Jon").first_or_create(attribute: "value")

@param [ Hash ] attrs The additional attributes to add.

@return [ Document ] A matching or newly created document.

@since 3.1.0

# File lib/mongoid/criteria/modifiable.rb, line 110
def first_or_create(attrs = nil, &block)
  first_or(:create, attrs, &block)
end
first_or_create!(attrs = nil, &block) click to toggle source

Find the first Document, or creates a new document with the conditions that were supplied plus attributes and will raise an error if validation fails.

@example First or create the document.

Person.where(name: "Jon").first_or_create!(attribute: "value")

@param [ Hash ] attrs The additional attributes to add.

@return [ Document ] A matching or newly created document.

@since 3.1.0

# File lib/mongoid/criteria/modifiable.rb, line 126
def first_or_create!(attrs = nil, &block)
  first_or(:create!, attrs, &block)
end
first_or_initialize(attrs = nil, &block) click to toggle source

Find the first Document, or initializes a new document with the conditions that were supplied plus attributes.

@example First or initialize the document.

Person.where(name: "Jon").first_or_initialize(attribute: "value")

@param [ Hash ] attrs The additional attributes to add.

@return [ Document ] A matching or newly initialized document.

@since 3.1.0

# File lib/mongoid/criteria/modifiable.rb, line 141
def first_or_initialize(attrs = nil, &block)
  first_or(:new, attrs, &block)
end
new(attrs = {}, &block)
Alias for: build

Private Instance Methods

create_document(method, attrs = nil, &block) click to toggle source

Create a document given the provided method and attributes from the existing selector.

@api private

@example Create a new document.

criteria.create_document(:new, {})

@param [ Symbol ] method Either :new or :create. @param [ Hash ] attrs Additional attributes to use.

@return [ Document ] The new or saved document.

@since 3.0.0

# File lib/mongoid/criteria/modifiable.rb, line 161
def create_document(method, attrs = nil, &block)
  attributes = selector.reduce(attrs || {}) do |hash, (key, value)|
    unless key.to_s =~ /\$/ || value.is_a?(Hash)
      hash[key] = value
    end
    hash
  end
  if embedded?
    attributes[:_parent] = parent_document
    attributes[:__metadata] = metadata
  end
  klass.__send__(method, attributes, &block)
end
find_or(method, attrs = {}, &block) click to toggle source

Find the first object or create/initialize it.

@api private

@example Find or perform an action.

Person.find_or(:create, :name => "Dev")

@param [ Symbol ] method The method to invoke. @param [ Hash ] attrs The attributes to query or set.

@return [ Document ] The first or new document.

# File lib/mongoid/criteria/modifiable.rb, line 186
def find_or(method, attrs = {}, &block)
  where(attrs).first || send(method, attrs, &block)
end
first_or(method, attrs = {}, &block) click to toggle source

Find the first document or create/initialize it.

@api private

@example First or perform an action.

Person.first_or(:create, :name => "Dev")

@param [ Symbol ] method The method to invoke. @param [ Hash ] attrs The attributes to query or set.

@return [ Document ] The first or new document.

@since 3.1.0

# File lib/mongoid/criteria/modifiable.rb, line 203
def first_or(method, attrs = {}, &block)
  first || create_document(method, attrs, &block)
end