Added query to get a list of available languages and count

cnxarchive/database.py

@@ -41,6 +41,8 @@ def _read_sql_file(name):
         return fp.read()
 
 SQL = {
+    'get-available-languages-and-count': _read_sql_file(
+        'get-available-languages-and-count'),
     'get-module': _read_sql_file('get-module'),
     'get-content-from-legacy-id': _read_sql_file('get-content-from-legacy-id'),
     'get-content-from-legacy-id-ver': _read_sql_file(

cnxarchive/sql/get-available-languages-and-count.sql

@@ -0,0 +1,11 @@
+-- ###
+-- Copyright (c) 2016, Rice University
+-- This software is subject to the provisions of the GNU Affero General
+-- Public License version 3 (AGPLv3).
+-- See LICENCE.txt for details.
+-- ###
+
+-- arguments: N/A
+SELECT language, count(language)
+FROM latest_modules
+group by language;

cnxarchive/tests/test_views.py

@@ -2696,6 +2696,7 @@ def test_extras(self, cursor):
 This online, fully editable and customizable title includes learning objectives, concept questions, links to labs and simulations, and ample practice opportunities to solve traditional physics \
 application problems.</div>""",
                 }],
+            u'languages_and_count': [[u'da', 1], [u'en', 17]],
             u'licenses': [{u'code': u'by',
                            u'isValidForPublication': False,
                            u'name': u'Creative Commons Attribution License',

cnxarchive/views.py

@@ -399,6 +399,12 @@ def _get_subject_list(cursor):
         yield subject
 
 
+def _get_available_languages_and_count(cursor):
+    """Return a list of available language and its count"""
+    cursor.execute(SQL['get-available-languages-and-count'])
+    return cursor.fetchall()
+
+
 def _get_featured_links(cursor):
     """Return featured books for the front page."""
     cursor.execute(SQL['get-featured-links'])
@@ -881,6 +887,8 @@ def extras(request):
     with psycopg2.connect(settings[config.CONNECTION_STRING]) as db_connection:
         with db_connection.cursor() as cursor:
             metadata = {
+                'languages_and_count': _get_available_languages_and_count(
+                    cursor),
                 'subjects': list(_get_subject_list(cursor)),
                 'featuredLinks': _get_featured_links(cursor),
                 'messages': _get_service_state_messages(cursor),