P5-703 add support for categories

api/helpers.py

@@ -0,0 +1,26 @@
+# coding=UTF-8
+import unidecode
+import re
+
+
+def slugify(text):
+    """Converts a string to a human-readable url"""
+
+    # translate
+    text = unidecode.unidecode(text)
+
+    # lowercase
+    text = text.lower()
+
+    # replace unwanted chars
+    numbers = re.compile('(?<=\d),(?=\d)')
+    text = numbers.sub('', text)
+    unwanted_chars = re.compile(r'[^_a-z0-9/]+')
+    text = unwanted_chars.sub('_', text)
+
+    # remove redundant _
+    duplicated_underscores = re.compile('_{2,}')
+    text = duplicated_underscores.sub('_', text)
+    text = text.strip('_')
+
+    return text