make keywords available for controlled vocabulary

app/dictionaries/keywords_dictionary.rb

@@ -0,0 +1,12 @@
+# Dictionary of Keywords
+class KeywordsDictionary < Dictionary
+
+  DEFAULT_FILE = 'keywords.yml'
+
+  private
+
+  def dictionary_filepath
+    get_file_path 'keywords', DEFAULT_FILE
+  end
+
+end

app/views/common/_dropdown.html.erb

@@ -25,13 +25,6 @@ render :partial => 'common/dropdown',
   options ||= format_for_dropdown(field_name.capitalize.constantize.all)
   existing ||= format_for_dropdown(resource.send(field_name.pluralize))
 
-  # Remove existing objects from the pool of options
-  options = options - existing
-  dropdown_toggle_button_name ||= ''
-  if dropdown_toggle_button_name.blank?
-    dropdown_toggle_button_name = "Add #{field_name.to_s.sub(/_ids?\z/, '').humanize}"
-  end
-
   # show the required label?
   required ||= false
 
@@ -43,6 +36,14 @@ render :partial => 'common/dropdown',
 
   # check title
   title ||= ''
+
+  # Remove existing objects from the pool of options
+  options = options - existing
+  dropdown_toggle_button_name ||= ''
+  if dropdown_toggle_button_name.blank?
+    dropdown_toggle_button_name = "Add #{field_label.to_s.sub(/_ids?\z/, '').humanize}"
+  end
+
 %>
 
 <div class="form-group<%= ' has-error' if errors.size > 0 %>">

app/views/events/_form.html.erb

@@ -90,8 +90,16 @@
                     title: t('events.hints.hosts') %>
 
   <!-- Field: Keywords -->
-  <%= f.multi_input :keywords, errors: @event.errors[:keywords],
-                    title: t('events.hints.keywords') %>
+  <% if TeSS::Config.feature['controlled_vocabulary_vars'].include? 'keywords' %>
+    <%= f.dropdown :keywords,
+                  options: KeywordsDictionary.instance.options_for_select,
+                  label: t('activerecord.attributes.event.keywords'),
+                  errors: @event.errors[:keywords],
+                  title: t('events.hints.keywords') %>
+  <% else %>
+    <%= f.multi_input :keywords, errors: @event.errors[:keywords],
+                      title: t('events.hints.keywords') %>
+  <% end %>
 
   <!-- Field: Fields -->
   <% if !TeSS::Config.feature['disabled'].include? 'ardc_fields_of_research' %>

app/views/materials/_form.html.erb

@@ -37,7 +37,16 @@
   <hr>
 
   <!-- Field: Keywords -->
-  <%= f.multi_input :keywords, title: t('materials.hints.keywords'), visibility_toggle: TeSS::Config.feature['materials_disabled'] %>
+  <% if TeSS::Config.feature['controlled_vocabulary_vars'].include? 'keywords' %>
+    <%= f.dropdown :keywords,
+                  options: KeywordsDictionary.instance.options_for_select,
+                  label: t('activerecord.attributes.event.keywords'),
+                  errors: @material.errors[:keywords],
+                  title: t('events.hints.keywords'),
+                  visibility_toggle: TeSS::Config.feature['materials_disabled'] %>
+  <% else %>
+    <%= f.multi_input :keywords, title: t('materials.hints.keywords'), visibility_toggle: TeSS::Config.feature['materials_disabled'] %>
+  <% end %>
 
   <!-- Field: Licence -->
   <%= f.input :licence, collection: licence_options_for_select, as: :grouped_select, group_method: :last, group_label_method: :first,

config/dictionaries/keywords.yml

@@ -0,0 +1,3 @@
+placeholder:
+  title: placeholder
+  description: 'Placeholder'

config/tess.example.yml

@@ -168,7 +168,7 @@ default: &default
     bioschemas_testing: false
     collection_curation: true
     auto_parse_vars: [] # available features to auto parse from description: ['keywords', 'target_audience']
-    controlled_vocabulary_vars: [] # available features: ['target_audience']
+    controlled_vocabulary_vars: [] # available features: ['keywords', 'target_audience']
 
     # User login
     invitation: false