misc: add split templatetag (#25973)

tests/test_templates.py

@@ -73,6 +73,17 @@ def test_startswith_templatetag():
     assert tmpl.render({'foo': 'bar-baz'}) == 'hello'
     assert tmpl.render({'foo': 'baz-bar'}) == ''
 
+def test_split_templatetag():
+    tmpl = Template('{{ foo|split|last }}')
+    assert tmpl.render() == ''
+    assert tmpl.render({'foo': 'bar baz'}) == 'baz'
+    assert tmpl.render({'foo': 'baz-bar'}) == 'baz-bar'
+
+    tmpl = Template('{{ foo|split:"-"|last }}')
+    assert tmpl.render() == ''
+    assert tmpl.render({'foo': 'bar-baz'}) == 'baz'
+    assert tmpl.render({'foo': 'baz-bar'}) == 'bar'
+
 def test_template_encoding():
     # django
     tmpl = Template('{{ foo }} à vélo')

wcs/qommon/templatetags/qommon.py

@@ -31,6 +31,10 @@ def get(mapping, key):
 def startswith(string, substring):
     return string and string.startswith(substring)
 
+@register.filter
+def split(string, separator=' '):
+    return (string or '').split(separator)
+
 @register.filter
 def parse_date(date_string):
     try: