Module: RequiresApproval::ClassMethods

Defined in:
lib/requires_approval.rb

Instance Method Summary collapse

Instance Method Details

#prepare_tables_for_requires_approval ⇒ Object

adds the correct tables and columns for requires_approval



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# File 'lib/requires_approval.rb', line 179

def prepare_tables_for_requires_approval
  self.reset_column_information

  # adds is_active to the parent table
  self.add_requires_approval_fields
  self.reset_column_information

  # adds our versions table
  self.drop_versions_table
  self.create_versions_table
  
end

#requires_approval_for(*attrs) ⇒ Object 



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# File 'lib/requires_approval.rb', line 192

def requires_approval_for(*attrs)
  self.set_options(attrs.extract_options!)

  # set up our attributes that require approval
  self.class_attribute :fields_requiring_approval
  self.fields_requiring_approval = attrs.collect(&:to_s)

  # set up delegates
  self.set_up_version_delegates

  # create a blank version before create to handle if no
  # attributes were ever set
  self.before_validation(
    :latest_unapproved_version_with_nil_check,
    :on => :create
  )
  
  # create the versions class
  self.create_versions_class
  self.has_many :versions, 
    :class_name => self.versions_class.name,
    :foreign_key => self.versions_foreign_key

  self.has_one :latest_unapproved_version,
    :autosave => true,
    :class_name => self.versions_class.name,
    :foreign_key => self.versions_foreign_key,
    :conditions => [
      "#{self.versions_table_name}.is_approved = ?", false
    ]
end

#unapproved ⇒ Object 



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# File 'lib/requires_approval.rb', line 224

def unapproved
  includes(:latest_unapproved_version)
    .where("#{self.versions_table_name}.id IS NOT NULL")
end

#versions_class ⇒ Object

the class which our versions are



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# File 'lib/requires_approval.rb', line 230

def versions_class
  "#{self.name}::#{self.versions_class_name}".constantize
end