Add translations to budget investments pg_search_scope

Some Budget::Investment attributes are now translatable so we need to
include all existing translations on pg_search model scope.

app/models/budget/investment.rb

@@ -198,12 +198,10 @@ class Budget
     end
 
     def searchable_values
-      { title              => "A",
+      { author.username    => "B",
-        author.username    => "B",
         heading.name       => "B",
-        tag_list.join(" ") => "B",
+        tag_list.join(" ") => "B"
-        description        => "C"
+      }.merge(searchable_globalized_values)
-      }
     end
 
     def self.search(terms)
@@ -419,5 +417,10 @@ class Budget
           end
         end
       end
+
+      def searchable_translations_definitions
+        { title       => "A",
+          description => "D" }
+      end
   end
 end

spec/models/budget/investment_spec.rb

@@ -683,12 +683,23 @@ describe Budget::Investment do
 
     context "attributes" do
 
+      let(:attributes) { { title: "save the world",
+                           description: "in order to save the world one must think about...",
+                           title_es: "para salvar el mundo uno debe pensar en...",
+                           description_es: "uno debe pensar" } }
+
       it "searches by title" do
-        budget_investment = create(:budget_investment, title: "save the world")
+        budget_investment = create(:budget_investment, attributes)
         results = described_class.search("save the world")
         expect(results).to eq([budget_investment])
       end
 
+      it "searches by title across all languages" do
+        budget_investment = create(:budget_investment, attributes)
+        results = described_class.search("salvar el mundo")
+        expect(results).to eq([budget_investment])
+      end
+
       it "searches by author name" do
         author = create(:user, username: "Danny Trejo")
         budget_investment = create(:budget_investment, author: author)