app/views/descriptors/_form.html.erb
<p> A <%= link_to('New descriptor task', new_descriptor_task_path) -%> exists and should be used. </p>
<%= form_for(@descriptor.metamorphosize) do |f| %>
<%= render 'shared/errors', object: @descriptor %>
<div class="field">
<%= f.label :name %><br>
<%= f.text_field :name %>
</div>
<div class="field">
<%= f.label :short_name %><br>
<%= f.text_field :short_name %>
</div>
<div class="field">
<%= f.label :type %><br>
<%= f.select :type, options_for_select(DESCRIPTOR_TYPES.invert.to_a, selected: f.object.type), include_blank: true %>
</div>
<div class="actions">
<%= f.submit %>
</div>
<% end %>