app/views/content/attributes/fields/options/_link.html.erb
<div class="row">
<div class="col s12 center grey-text uppercase">
Field options
</div>
</div>
<div class="row">
<div class="col s12">
<p>
Customize which pages this field can link to with the dropdown below.
This won't remove any existing links you've already made between your pages.
</p>
</div>
<div class="input-field col s12">
<%= form_for field, remote: true do |f| %>
<label>Linkable page types</label>
<select multiple
name="attribute_field[field_options][linkable_types][]"
prompt="Please select at least one page type for this field to link to"
class="autosave-closest-form-on-change"
>
<%=
options_for_select(
Rails.application.config.content_types[:all].map { |klass| [klass.name.pluralize, klass.name] },
field.migrated_from_legacy? \
? (field.field_options || {}).fetch('linkable_types', []) # New-style links
: (@dummy_model.send(field.old_column_source).klass) # Old-style links
)
%>
</select>
<small class="grey-text">Changes will automatically save.</small><br />
<% end %>
</div>
</div>