Add workshops dropdown filter to workshop_logs index

app/controllers/workshop_logs_controller.rb

@@ -129,8 +129,8 @@ def set_index_variables # needs to not be private
     else
       current_user.projects.order(:name)
     end
-    # @workshops = Workshop.joins(:workshop_logs)
-    #                      .order(:title)
+    @workshops = Workshop.where(id: @workshop_logs_unpaginated.select(:workshop_id).distinct)
+                         .order(:title)
   end
 
   private

app/views/workshop_logs/_search_boxes.html.erb

@@ -22,6 +22,17 @@
                      onchange: "this.form.requestSubmit()" %>
     </div>
 
+    <!-- Workshop -->
+    <div class="flex flex-col w-full sm:w-1/2 md:w-1/4 lg:w-1/5">
+      <%= label_tag :workshop_id, "Workshop", class: "text-sm font-medium text-gray-700 mb-1" %>
+      <%= select_tag :workshop_id,
+                     options_from_collection_for_select(@workshops, :id, :title, params[:workshop_id]),
+                     include_blank: "All workshops",
+                     class: "rounded-md border border-gray-300 px-3 py-2 text-gray-800 shadow-sm
+                             focus:border-blue-500 focus:ring focus:ring-blue-200 focus:outline-none w-full",
+                     onchange: "this.form.requestSubmit()" %>
+    </div>
+
     <!-- Facilitator -->
     <div class="flex flex-col w-full sm:w-1/2 md:w-1/4 lg:w-1/5">
       <%= label_tag :user_id, "Facilitator", class: "text-sm font-medium text-gray-700 mb-1" %>

spec/requests/workshop_logs_spec.rb

@@ -37,6 +37,34 @@
     clear_enqueued_jobs
   end
 
+  describe "GET /index" do
+    it "loads the index page successfully" do
+      get workshop_logs_path
+      expect(response).to have_http_status(:success)
+    end
+
+    it "filters workshop logs by workshop_id" do
+      workshop_log = create(:workshop_log, valid_attributes)
+      other_workshop = create(:workshop)
+      other_log = create(:workshop_log, valid_attributes.merge(workshop_id: other_workshop.id))
+
+      get workshop_logs_path, params: { workshop_id: workshop.id }
+
+      expect(response).to have_http_status(:success)
+      expect(assigns(:workshop_logs_unpaginated)).to include(workshop_log)
+      expect(assigns(:workshop_logs_unpaginated)).not_to include(other_log)
+    end
+
+    it "populates workshops dropdown with only workshops from visible logs" do
+      workshop_log = create(:workshop_log, valid_attributes)
+
+      get workshop_logs_path
+
+      expect(response).to have_http_status(:success)
+      expect(assigns(:workshops)).to include(workshop)
+    end
+  end
+
   describe "POST /create" do
     context "with valid parameters" do
       it "creates a WorkshopLog" do