Update extension to use ITranslation interface

.tx/config

@@ -2,7 +2,7 @@
 host = https://www.transifex.com
 
 [sixodp.ckanext-rating]
-file_filter = i18n/<lang>/LC_MESSAGES/ckanext-rating.po
+file_filter = ckanext/rating/i18n/<lang>/LC_MESSAGES/ckanext-rating.po
-source_file = i18n/ckanext-rating.pot
+source_file = ckanext/rating/i18n/ckanext-rating.pot
 source_lang = en
 type = PO

ckanext/rating/plugin.py

@@ -8,6 +8,7 @@ from ckanext.rating.logic import action
 from ckanext.rating import helpers
 import ckanext.rating.logic.auth as rating_auth
 from ckanext.rating.model import Rating
+from ckan.lib.plugins import DefaultTranslation
 
 
 def sort_by_rating(sort):
@@ -46,13 +47,15 @@ def sort_by_rating(sort):
     return q
 
 
-class RatingPlugin(plugins.SingletonPlugin):
+class RatingPlugin(plugins.SingletonPlugin, DefaultTranslation):
     plugins.implements(plugins.IConfigurer)
     plugins.implements(plugins.IActions)
     plugins.implements(plugins.ITemplateHelpers)
     plugins.implements(plugins.IAuthFunctions)
     plugins.implements(plugins.IPackageController, inherit=True)
     plugins.implements(plugins.IRoutes, inherit=True)
+    if toolkit.check_ckan_version(min_version='2.5.0'):
+        plugins.implements(plugins.ITranslation, inherit=True)
 
     # IConfigurer
 

setup.cfg

@@ -1,21 +1,21 @@
 [extract_messages]
 keywords = translate isPlural
 add_comments = TRANSLATORS:
-output_file = i18n/ckanext-rating.pot
+output_file = ckanext/rating/i18n/ckanext-rating.pot
 width = 80
 
 [init_catalog]
 domain = ckanext-rating
-input_file = i18n/ckanext-rating.pot
+input_file = ckanext/rating/i18n/ckanext-rating.pot
-output_dir = i18n
+output_dir = ckanext/rating/i18n
 
 [update_catalog]
 domain = ckanext-rating
-input_file = i18n/ckanext-rating.pot
+input_file = ckanext/rating/i18n/ckanext-rating.pot
-output_dir = i18n
+output_dir = ckanext/rating/i18n
 previous = true
 
 [compile_catalog]
 domain = ckanext-rating
-directory = i18n
+directory = ckanext/rating/i18n
 statistics = true