app/models/orvos_model.rb

   1 class OrvosModel < ActiveRecord::Base
   2   self.abstract_class = true
   3
   4   include CurrentApiClient      # current_user, current_api_client, etc.
   5
   6   attr_protected :created_at
   7   attr_protected :modified_by_user
   8   attr_protected :modified_by_client
   9   attr_protected :modified_at
  10   before_update :permission_to_update
  11   before_create :update_modified_by_fields
  12   before_update :update_modified_by_fields
  13
  14   def self.kind_class(kind)
  15     kind.match(/^orvos\#(.+?)(_list|List)?$/)[1].pluralize.classify.constantize rescue nil
  16   end
  17
  18   def eager_load_associations
  19     self.class.columns.each do |col|
  20       re = col.name.match /^(.*)_kind$/
  21       if (re and
  22           self.respond_to? re[1].to_sym and
  23           (auuid = self.send(re[1].to_sym)) and
  24           (aclass = self.class.kind_class(self.send(col.name.to_sym))) and
  25           (aobject = aclass.where('uuid=?', auuid).first))
  26         self.send((re[1]+'=').to_sym, aobject)
  27       end
  28     end
  29   end
  30
  31   protected
  32
  33   def permission_to_update
  34     return false unless current_user
  35     if self.owner_changed? and self.owner_was != self.uuid
  36       return Metadatum.where(metadata_class: 'permission',
  37                              name: 'can_pillage',
  38                              tail: self.owner,
  39                              head: current_user.uuid).count > 0
  40     end
  41     self.owner == current_user.uuid or
  42       current_user.is_admin or
  43       current_user.uuid == self.uuid or
  44       Metadatum.where(metadata_class: 'permission',
  45                       name: 'can_write',
  46                       tail: self.owner,
  47                       head: current_user.uuid).count > 0
  48   end
  49
  50   def update_modified_by_fields
  51     if self.changed?
  52       self.created_at ||= Time.now
  53       self.owner ||= current_user.uuid
  54       self.modified_at = Time.now
  55       self.modified_by_user = current_user.uuid
  56       self.modified_by_client = current_api_client.uuid
  57     end
  58   end
  59 end