Module: Neo4j::Shared::MassAssignment

Extended by:
ActiveSupport::Concern
Included in:
Property
Defined in:
lib/neo4j/shared/mass_assignment.rb

Overview

MassAssignment allows you to bulk set and update attributes

Including MassAssignment into your model gives it a set of mass assignment methods, similar to those found in ActiveRecord.

Originally part of ActiveAttr, github.com/cgriego/active_attr

Examples:

Usage

class Person
  include Neo4j::Shared::MassAssignment
end

Instance Method Summary collapse

Instance Method Details

#add_undeclared_property(_, _) ⇒ Object


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# File 'lib/neo4j/shared/mass_assignment.rb', line 37

def add_undeclared_property(_, _); end

#assign_attributes(new_attributes = nil) ⇒ Object

Mass update a model's attributes

Examples:

Assigning a hash

person.assign_attributes(:first_name => "Chris", :last_name => "Griego")
person.first_name #=> "Chris"
person.last_name #=> "Griego"

Parameters:

  • attributes (Hash{#to_s => Object}, #each)

    Attributes used to populate the model

  • options (Hash, #[])

    Options that affect mass assignment


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# File 'lib/neo4j/shared/mass_assignment.rb', line 25

def assign_attributes(new_attributes = nil)
  return unless new_attributes.present?
  new_attributes.each do |name, value|
    writer = :"#{name}="
    if respond_to?(writer)
      send(writer, value)
    else
      add_undeclared_property(name, value)
    end
  end
end

#attributes=(new_attributes) ⇒ Object

Mass update a model's attributes

Examples:

Assigning a hash

person.attributes = { :first_name => "Chris", :last_name => "Griego" }
person.first_name #=> "Chris"
person.last_name #=> "Griego"

Parameters:

  • attributes (Hash{#to_s => Object}, #each)

    Attributes used to populate the model

  • options (Hash, #[])

    Options that affect mass assignment


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# File 'lib/neo4j/shared/mass_assignment.rb', line 47

def attributes=(new_attributes)
  assign_attributes(new_attributes)
end

#initialize(attributes = nil) ⇒ Object

Initialize a model with a set of attributes

Examples:

Initializing with a hash

person = Person.new(:first_name => "Chris", :last_name => "Griego")
person.first_name #=> "Chris"
person.last_name #=> "Griego"

Parameters:

  • attributes (Hash{#to_s => Object}, #each) (defaults to: nil)

    Attributes used to populate the model

  • options (Hash, #[])

    Options that affect mass assignment


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# File 'lib/neo4j/shared/mass_assignment.rb', line 59

def initialize(attributes = nil)
  assign_attributes(attributes)
  super()
end