Modify db_fields hash in translation.rb config

This commit modifies how the templates-related tables ('templates', 'phases', 'sections', 'questions', 'annotations', and 'question_options') are queried within our customisation of the translation gem. All of those related tables are removed from config.db_fields. However, the tables (along with their previously specified columns) are now all included in the newly added Template ActiveRecord query (line 24). Rather than returning all of the db entries, this query only returns those that relate to the app's default_org.

 `'CallableQueries' => [templates_data_for_default_org_proc]` has been added to config.db_fields.`def templates_data_for_default_org_proc` returns a proc. This proc will be called within the translation gem, where it will execute the aforementioned Template ActiveRecord query. Finally,  the returned entries will be uploaded to translation.io.

Author: aaronskiba

config/initializers/translation.rb

@@ -17,6 +17,21 @@ def ignore_paths
   Dir['**/'] - Dir['app/**/']
 end
 
+def templates_data_for_default_org_proc
+  proc do
+    # Return all templates data pertaining to default_org
+    Template.includes(phases: { sections: { questions: %i[annotations question_options] } })
+            .where(org_id: Rails.application.secrets.default_funder_id)
+            .pluck(:title, :description,
+                   'phases.title', 'phases.description',
+                   'sections.title', 'sections.description',
+                   'questions.text', 'questions.default_value',
+                   'annotations.text',
+                   'question_options.text')
+            .flatten.uniq
+  end
+end
+
 TranslationIO.configure do |config|
   config.api_key        = Rails.application.secrets.translation_io_api_key
   config.source_locale  = 'en'
@@ -32,13 +47,8 @@ def ignore_paths
   config.db_fields = {
     'Theme' => %w[title description],
     'QuestionFormat' => %w[title description],
-    'Template' => %w[title description],
-    'Phase' => %w[title description],
-    'Section' => %w[title description],
-    'Question' => %w[text default_value],
-    'Annotation' => ['text'],
-    'ResearchDomain' => ['label'],
-    'QuestionOption' => ['text']
+    'ResearchDomain' => %w[label],
+    'CallableQueries' => [templates_data_for_default_org_proc] # array elements are ActiveRecord query procs
   }
   # Find other useful usage information here:
   # https://github.com/translation/rails#readme