Issue 5452 - Improve CMS API for local link generation

cms/converters.py

Index: cms/converters.py
===================================================================
--- a/cms/converters.py
+++ b/cms/converters.py
@@ -442,6 +442,8 @@
             'get_page_content': self.get_page_content,
             'get_pages_metadata': self.get_pages_metadata,
             'get_canonical_url': self.get_canonical_url,
+            'get_page_url': self.get_page_url,
+            'page_has_locale': self.page_has_locale,
         }
 
         for dirname, dictionary in [('filters', filters),
@@ -588,6 +590,16 @@
             stack.append(item)
         return structured
 
+    def page_has_locale(self, page, locale):
+        return self._params['source'].has_locale(locale, page)
+
+    def get_page_url(self, page, locale=None, redirect=False):
+        if not locale:
+            locale = self._params['locale']
+        if self.page_has_locale(page, locale) or redirect:
+            return self._params['source'].resolve_link(page, locale)[1]
+        raise Exception('{} does not exist in {}'.format(page, locale))
+
 
 converters = {
     'html': RawConverter,