%li[task]{ class: (task.completed_at.nil? ? "" : "completed") }
  = task.name
  %form.update(action="/task/#{task.id}" method="POST")
    %input{ type: 'hidden', name: '_method', value: 'PUT' }
    -if task.completed_at.nil?
      %input{type: 'submit', value: '−', title: 'Complete Task'}
    -else
      %input{type: 'submit', value: '✓', title: 'Uncomplete Task'}
  %form.delete(action="/task/#{task.id}" method="POST")
    %input(type="hidden" name="_method" value="DELETE")
    %input(type="submit" value="✗" title="Delete Task")