engine/app/models/locomotive/membership.rb

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module Locomotive
class Membership
include Locomotive::Mongoid::Document
## fields ##
field :role, :default => 'author'
## associations ##
referenced_in :account, :class_name => 'Locomotive::Account', :validate => false
embedded_in :site, :class_name => 'Locomotive::Site', :inverse_of => :memberships
## validations ##
validates_presence_of :account
validate :can_change_role, :if => :role_changed?
## callbacks ##
before_save :define_role
## methods ##
Ability::ROLES.each do |_role|
define_method("#{_role}?") do
self.role == _role
end
end
def email; @email; end
def email=(email)
@email = email
self.account = Account.where(:email => email).first
end
def process!
if @email.blank?
self.errors.add_on_blank(:email)
:error
elsif self.account.blank?
:create_account
elsif self.site.memberships.any? { |m| m.account_id == self.account_id && m._id != self._id }
self.errors.add(:base, 'Already created')
:already_created
else
self.save
:save_it
end
end
def ability
@ability ||= Ability.new(self.account, self.site)
end
protected
def define_role
self.role = Ability::ROLES.include?(role.downcase) ? role.downcase : Ability::ROLES.first
end
# Users should not be able to set the role of another user to be higher than
# their own. A designer for example should not be able to set another user to
# be an administrator
def can_change_role
current_site = Thread.current[:site]
current_membership = current_site.memberships.where(:account_id => Thread.current[:account].id).first if current_site.present?
if current_membership.present?
# The role cannot be set higher than the current one (we use the index in
# the roles array to check role presidence)
errors.add(:role, :invalid) if Ability::ROLES.index(role) < Ability::ROLES.index(current_membership.role)
end
end
end
end