Module: CapsuleCRM::Associations::BelongsTo::ClassMethods

Defined in:
lib/capsule_crm/associations/belongs_to.rb

Instance Method Summary collapse

Instance Method Details

#belongs_to(association_name, options = {}) ⇒ Object

Public: Add getter and setter methods for belongs to associations

association_name - The String name of the association options - The Hash of additional options (default: {}):

class_name: The String name of the associated
class

Examples

class CapsuleCRM::Person

include CapsuleCRM::Associations::BelongsTo

belongs_to :organisation, class_name: 'CapsuleCRM::Organization'

end

organisation = CapsuleCRM::Organisation.find(1)

person = CapsuleCRM::Person.new(organisation = organisation) person.organisation_id

> 1

person.organisation

> organisation



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# File 'lib/capsule_crm/associations/belongs_to.rb', line 34

def belongs_to(association_name, options = {})
  association = CapsuleCRM::Associations::BelongsToAssociation.
    new(association_name, self, options)
  self.associations[association_name] = association

  class_eval do
    attribute association.foreign_key, Integer
  end

  (class << self; self; end).instance_eval do
    define_method "_for_#{association_name}" do |id|
      CapsuleCRM::Associations::BelongsToFinder.new(association).
        call(id)
    end
  end

  define_method association_name do
    instance_variable_get(:"@#{association_name}") ||
      if self.send(association.foreign_key)
        association.parent(self).tap do |object|
          self.send("#{association_name}=", object)
        end
      end
  end

  define_method "#{association_name}=" do |associated_object|
    associated_object.tap do |object|
      instance_variable_set(:"@#{association_name}", associated_object)
      self.send "#{association.foreign_key}=", associated_object.try(:id)
    end
  end
end