Consul: Dynamically access and query powers for a given name, model class or record

Consul Show archive.org snapshot 0.6.1+ gives you a way to dynamically access and query powers for a given name, model class or record.
A common use case for this are generic helper methods, e.g. a method to display an "edit" link for any given record
if the user is authorized to change that record:

module CrudHelper

  def edit_record_action(record)
    if current_power.include_record?(:updatable, record)
      link_to 'Edit', [:edit, record]
    end
  end

end

You can find a full list of available dynamic calls below:

Dynamic call	Equivalent
`Power.current.send(:notes)`	`Power.current.notes`
`Power.current.include?(:notes)`	`Power.current.notes?`
`Power.current.include!(:notes)`	`Power.current.notes!`
`Power.current.include?(:notes, Note.last)`	`Power.current.note?(Note.last)`
`Power.current.include!(:notes, Note.last)`	`Power.current.note!(Note.last)`
`Power.current.for_record(Note.last)`	`Power.current.notes`
`Power.current.for_record(:updatable, Note.last)`	`Power.current.updatable_notes`
`Power.current.for_model(Note)`	`Power.current.notes`
`Power.current.for_model(:updatable, Note)`	`Power.current.updatable_notes`
`Power.current.include_model?(Note)`	`Power.current.notes?`
`Power.current.include_model?(:updatable, Note)`	`Power.current.updatable_notes?`
`Power.current.include_model!(Note)`	`Power.current.notes!`
`Power.current.include_model!(:updatable, Note)`	`Power.current.updatable_notes!`
`Power.current.include_record?(Note.last)`	`Power.current.note?(Note.last)`
`Power.current.include_record?(:updatable, Note.last)`	`Power.current.updatable_note?(Note.last)`
`Power.current.include_record!(Note.last)`	`Power.current.note!(Note.last)`
`Power.current.include_record!(:updatable, Note.last)`	`Power.current.updatable_note!(Note.last)`
`Power.current.name_for_model(Note)`	`:notes`
`Power.current.name_for_model(:updatable, Note)`	`:updatable_notes`
`Power.current.name_for_record(Note.last)`	`:notes`
`Power.current.name_for_record(:updatable, Note.last)`	`:updatable_notes`

Henning Koch Over 11 years ago