templatetags: add 'endswith' template filter (#43558)

combo/public/templatetags/combo.py

@@ -343,6 +343,12 @@ def get_page(page_slug):
 def startswith(string, substring):
     return string and force_text(string).startswith(force_text(substring))
 
+
+@register.filter
+def endswith(string, substring):
+    return string and force_text(string).endswith(force_text(substring))
+
+
 def parse_float(value):
     if isinstance(value, six.string_types):
         # replace , by . for French users comfort

tests/test_public_templatetags.py

@@ -241,6 +241,14 @@ def test_startswith():
     context = Context({'foo': 'bar'})
     assert t.render(context) == 'ok'
 
+
+def test_endswith_templatetag():
+    tmpl = Template('{% if foo|endswith:"bar" %}ok{% endif %}')
+    assert tmpl.render(Context({'foo': None})) == ''
+    assert tmpl.render(Context({'foo': 'bar-baz'})) == ''
+    assert tmpl.render(Context({'foo': 'baz-bar'})) == 'ok'
+
+
 def test_datetime_templatetags():
     tmpl = Template('{{ plop|datetime }}')
     assert tmpl.render(Context({'plop': '2017-12-21 10:32'})) == 'Dec. 21, 2017, 10:32 a.m.'