def generate_slug(name, language="en", max_length=100,
allowed="abcdefghijklmnopqrstuvwxyz0123456789_-",
default="slug"):
""" generate a slug based on a title / sentence """
from wheelcms_axle.stopwords import stopwords
import re
name = name.lower()
name_no_stopwords = " ".join(x for x in name.split()
if x not in set(stopwords.get(language, [])))
slug = re.sub("[^%s]+" % allowed, "-",
name_no_stopwords,
)[:max_length].strip("-")
slug = re.sub("-+", "-", slug)
return slug or default
def clean_slug(self):
if self.attach:
return
slug = self.data.get("slug", "").strip().lower()
language = self.data.get("language", settings.FALLBACK)
## XXX move the whole slug generation / stopwords stuff to separate method
title = self.cleaned_data.get("title", "").lower()
title_no_sw = " ".join(x for x in title.split() if x not in set(stopwords.get(language, [])))
parent_path = self.parent.get_path(language=language)
if not slug:
slug = re.sub("[^%s]+" % Node.ALLOWED_CHARS, "-", title_no_sw)[: Node.MAX_PATHLEN].strip("-")
slug = re.sub("-+", "-", slug)
## slug may be empty now by all space/stopwords/dash removal
if not slug:
slug = "node"
existing = Node.get(path=parent_path + "/" + slug, language=language)
base_slug = slug[: Node.MAX_PATHLEN - 6] ## some space for counter
count = 1
while (existing and existing != self.node) or (slug in self.reserved):
slug = base_slug + str(count)
existing = Node.get(path=self.parent.path + "/" + slug, language=language)
count += 1
if slug in self.reserved:
raise forms.ValidationError("This is a reserved name")
if not Node.validpathre.match(slug):
raise forms.ValidationError("Only numbers, letters, _-")
existing = Node.get(path=parent_path + "/" + slug, language=language)
if existing and existing != self.node:
raise forms.ValidationError("Name in use")
return slug
