Send double columned language list in page_params.

zerver/lib/i18n.py

@@ -1,11 +1,13 @@
 # -*- coding: utf-8 -*-
 from __future__ import absolute_import
+import operator
 
 from django.conf import settings
 from django.utils import translation
 from django.utils.translation import ugettext as _
 
 from six import text_type
+from six.moves import urllib, zip_longest, zip, range
 from typing import Any, List, Dict, Optional
 
 import os
@@ -32,6 +34,40 @@ def get_language_list():
 
         return sorted(lang_list, key=lambda i: i['name'])
 
+def get_language_list_for_templates(default_language):
+    # type: (text_type) -> List[Dict[str, Dict[str, str]]]
+    language_list = [l for l in get_language_list()
+                     if 'percent_translated' not in l or
+                        l['percent_translated'] >= 5.]
+
+    formatted_list = []
+    lang_len = len(language_list)
+    firsts_end = (lang_len // 2) + operator.mod(lang_len, 2)
+    firsts = list(range(0, firsts_end))
+    seconds = list(range(firsts_end, lang_len))
+    assert len(firsts) + len(seconds) == lang_len
+    for row in zip_longest(firsts, seconds):
+        item = {}
+        for position, ind in zip(['first', 'second'], row):
+            if ind is None:
+                continue
+
+            lang = language_list[ind]
+            percent = name = lang['name']
+            if 'percent_translated' in lang:
+                percent = u"{} ({}%)".format(name, lang['percent_translated'])
+
+            item[position] = {
+                'name': name,
+                'code': lang['code'],
+                'percent': percent,
+                'selected': True if default_language == lang['code'] else False
+            }
+
+        formatted_list.append(item)
+
+    return formatted_list
+
 def get_language_name(code):
     # type: (str) -> Optional[text_type]
     for lang in get_language_list():

zerver/tests/tests.py

@@ -1834,6 +1834,7 @@ class HomeTest(AuthedTestCase):
             "is_admin",
             "is_zephyr_mirror_realm",
             "language_list",
+            "language_list_dbl_col",
             "last_event_id",
             "left_side_userlist",
             "login_page",

zerver/views/__init__.py

@@ -47,7 +47,8 @@ from zerver.decorator import require_post, authenticated_json_post_view, \
     JsonableError, get_user_profile_by_email, REQ, \
     zulip_login_required
 from zerver.lib.avatar import avatar_url
-from zerver.lib.i18n import get_language_list, get_language_name
+from zerver.lib.i18n import get_language_list, get_language_name, \
+    get_language_list_for_templates
 from zerver.lib.response import json_success, json_error
 from zerver.lib.str_utils import force_str
 from zerver.lib.utils import statsd, generate_random_token
@@ -64,7 +65,7 @@ import ujson
 import simplejson
 import re
 from six import text_type
-from six.moves import urllib
+from six.moves import urllib, zip_longest, zip, range
 import base64
 import time
 import logging
@@ -946,8 +947,9 @@ def home(request):
         enter_sends           = user_profile.enter_sends,
         left_side_userlist    = register_ret['left_side_userlist'],
         default_language      = register_ret['default_language'],
-        language_list         = get_language_list(),
         default_language_name = get_language_name(register_ret['default_language']),
+        language_list_dbl_col = get_language_list_for_templates(register_ret['default_language']),
+        language_list         = get_language_list(),
         referrals             = register_ret['referrals'],
         realm_emoji           = register_ret['realm_emoji'],
         needs_tutorial        = needs_tutorial,