Add tag search

First minimal implementation with a basic filter UI. Only support search
by any of the selected tags

app/controllers/admin/products_v3_controller.rb

@@ -112,6 +112,7 @@ module Admin
       @search_term = params[:search_term] || params[:_search_term]
       @producer_id = params[:producer_id] || params[:_producer_id]
       @category_id = params[:category_id] || params[:_category_id]
+      @tags = params[:tags_name_in] || params[:_tags_name_in]
     end
 
     def init_pagination_params
@@ -160,6 +161,7 @@ module Admin
         query.merge!(Spree::Variant::SEARCH_KEY => @search_term)
       end
       query.merge!(variants_primary_taxon_id_in: @category_id) if @category_id.present?
+      query.merge!(variants_tags_name_in: @tags) if @tags.present?
       query.merge!(@q) if @q
 
       query
@@ -176,6 +178,7 @@ module Admin
           :stock_items,
           :tax_category,
           :supplier,
+          :taggings,
         ] },
       ]
     end

app/views/admin/products_v3/_filters.html.haml

@@ -17,6 +17,9 @@
     = select_tag :category_id, options_for_select(category_options, category_id),
       include_blank: t('.all_categories'), class: "fullwidth",
       data: { "controller": "tom-select", 'tom-select-placeholder-value': t('.search_for_categories')}
+  .tags
+    = label_tag :tags_name_in, t('.tags.label')
+    = select_tag :tags_name_in, options_for_select(ActsAsTaggableOn::Tag.for_context("variant_tag").distinct.order(:name).pluck(:name), @tags), { class: "fullwidth", multiple: true }
   .submit
     .search-button
       = button_tag t(".search"), class: "secondary icon-search relaxed", name: nil

config/locales/en.yml

@@ -973,6 +973,8 @@ en:
           label: Producers
         categories:
           label: Categories
+        tags:
+          label: Tags
         search: Search
       sort:
         pagination: