Chris@0: # redMine - project management software
Chris@0: # Copyright (C) 2006  Jean-Philippe Lang
Chris@0: #
Chris@0: # This program is free software; you can redistribute it and/or
Chris@0: # modify it under the terms of the GNU General Public License
Chris@0: # as published by the Free Software Foundation; either version 2
Chris@0: # of the License, or (at your option) any later version.
Chris@0: # 
Chris@0: # This program is distributed in the hope that it will be useful,
Chris@0: # but WITHOUT ANY WARRANTY; without even the implied warranty of
Chris@0: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
Chris@0: # GNU General Public License for more details.
Chris@0: # 
Chris@0: # You should have received a copy of the GNU General Public License
Chris@0: # along with this program; if not, write to the Free Software
Chris@0: # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
Chris@0: 
Chris@0: class Role < ActiveRecord::Base
Chris@0:   # Built-in roles
Chris@0:   BUILTIN_NON_MEMBER = 1
Chris@0:   BUILTIN_ANONYMOUS  = 2
Chris@0: 
Chris@0:   named_scope :givable, { :conditions => "builtin = 0", :order => 'position' }
Chris@0:   named_scope :builtin, lambda { |*args|
Chris@0:     compare = 'not' if args.first == true
Chris@0:     { :conditions => "#{compare} builtin = 0" }
Chris@0:   }
Chris@0:   
Chris@0:   before_destroy :check_deletable
Chris@0:   has_many :workflows, :dependent => :delete_all do
Chris@0:     def copy(source_role)
Chris@0:       Workflow.copy(nil, source_role, nil, proxy_owner)
Chris@0:     end
Chris@0:   end
Chris@0:   
Chris@0:   has_many :member_roles, :dependent => :destroy
Chris@0:   has_many :members, :through => :member_roles
Chris@0:   acts_as_list
Chris@0:   
Chris@0:   serialize :permissions, Array
Chris@0:   attr_protected :builtin
Chris@0: 
Chris@0:   validates_presence_of :name
Chris@0:   validates_uniqueness_of :name
Chris@0:   validates_length_of :name, :maximum => 30
Chris@0:   validates_format_of :name, :with => /^[\w\s\'\-]*$/i
Chris@0: 
Chris@0:   def permissions
Chris@0:     read_attribute(:permissions) || []
Chris@0:   end
Chris@0:   
Chris@0:   def permissions=(perms)
Chris@0:     perms = perms.collect {|p| p.to_sym unless p.blank? }.compact.uniq if perms
Chris@0:     write_attribute(:permissions, perms)
Chris@0:   end
Chris@0: 
Chris@0:   def add_permission!(*perms)
Chris@0:     self.permissions = [] unless permissions.is_a?(Array)
Chris@0: 
Chris@0:     permissions_will_change!
Chris@0:     perms.each do |p|
Chris@0:       p = p.to_sym
Chris@0:       permissions << p unless permissions.include?(p)
Chris@0:     end
Chris@0:     save!
Chris@0:   end
Chris@0: 
Chris@0:   def remove_permission!(*perms)
Chris@0:     return unless permissions.is_a?(Array)
Chris@0:     permissions_will_change!
Chris@0:     perms.each { |p| permissions.delete(p.to_sym) }
Chris@0:     save!
Chris@0:   end
Chris@0:   
Chris@0:   # Returns true if the role has the given permission
Chris@0:   def has_permission?(perm)
Chris@0:     !permissions.nil? && permissions.include?(perm.to_sym)
Chris@0:   end
Chris@0:   
Chris@0:   def <=>(role)
Chris@0:     role ? position <=> role.position : -1
Chris@0:   end
Chris@0:   
Chris@0:   def to_s
Chris@0:     name
Chris@0:   end
Chris@0:   
Chris@0:   # Return true if the role is a builtin role
Chris@0:   def builtin?
Chris@0:     self.builtin != 0
Chris@0:   end
Chris@0:   
Chris@0:   # Return true if the role is a project member role
Chris@0:   def member?
Chris@0:     !self.builtin?
Chris@0:   end
Chris@0:   
Chris@0:   # Return true if role is allowed to do the specified action
Chris@0:   # action can be:
Chris@0:   # * a parameter-like Hash (eg. :controller => 'projects', :action => 'edit')
Chris@0:   # * a permission Symbol (eg. :edit_project)
Chris@0:   def allowed_to?(action)
Chris@0:     if action.is_a? Hash
Chris@0:       allowed_actions.include? "#{action[:controller]}/#{action[:action]}"
Chris@0:     else
Chris@0:       allowed_permissions.include? action
Chris@0:     end
Chris@0:   end
Chris@0:   
Chris@0:   # Return all the permissions that can be given to the role
Chris@0:   def setable_permissions
Chris@0:     setable_permissions = Redmine::AccessControl.permissions - Redmine::AccessControl.public_permissions
Chris@0:     setable_permissions -= Redmine::AccessControl.members_only_permissions if self.builtin == BUILTIN_NON_MEMBER
Chris@0:     setable_permissions -= Redmine::AccessControl.loggedin_only_permissions if self.builtin == BUILTIN_ANONYMOUS
Chris@0:     setable_permissions
Chris@0:   end
Chris@0: 
Chris@0:   # Find all the roles that can be given to a project member
Chris@0:   def self.find_all_givable
Chris@0:     find(:all, :conditions => {:builtin => 0}, :order => 'position')
Chris@0:   end
Chris@0: 
Chris@0:   # Return the builtin 'non member' role.  If the role doesn't exist,
Chris@0:   # it will be created on the fly.
Chris@0:   def self.non_member
Chris@0:     non_member_role = find(:first, :conditions => {:builtin => BUILTIN_NON_MEMBER})
Chris@0:     if non_member_role.nil?
Chris@0:       non_member_role = create(:name => 'Non member', :position => 0) do |role|
Chris@0:         role.builtin = BUILTIN_NON_MEMBER
Chris@0:       end
Chris@0:       raise 'Unable to create the non-member role.' if non_member_role.new_record?
Chris@0:     end
Chris@0:     non_member_role
Chris@0:   end
Chris@0: 
Chris@0:   # Return the builtin 'anonymous' role.  If the role doesn't exist,
Chris@0:   # it will be created on the fly.
Chris@0:   def self.anonymous
Chris@0:     anonymous_role = find(:first, :conditions => {:builtin => BUILTIN_ANONYMOUS})
Chris@0:     if anonymous_role.nil?
Chris@0:       anonymous_role = create(:name => 'Anonymous', :position => 0) do |role|
Chris@0:         role.builtin = BUILTIN_ANONYMOUS
Chris@0:       end
Chris@0:       raise 'Unable to create the anonymous role.' if anonymous_role.new_record?
Chris@0:     end
Chris@0:     anonymous_role
Chris@0:   end
Chris@0: 
Chris@0:   
Chris@0: private
Chris@0:   def allowed_permissions
Chris@0:     @allowed_permissions ||= permissions + Redmine::AccessControl.public_permissions.collect {|p| p.name}
Chris@0:   end
Chris@0: 
Chris@0:   def allowed_actions
Chris@0:     @actions_allowed ||= allowed_permissions.inject([]) { |actions, permission| actions += Redmine::AccessControl.allowed_actions(permission) }.flatten
Chris@0:   end
Chris@0:     
Chris@0:   def check_deletable
Chris@0:     raise "Can't delete role" if members.any?
Chris@0:     raise "Can't delete builtin role" if builtin?
Chris@0:   end
Chris@0: end