Hi there,
I followed some examples in the documentation regarding contenttype
and I wanted to write my own simple, generig tagging app. I know there
is tagging application but it's troublesome when you try to pass tag
names in GET (language specific chars). Here is my code - it doesn't
work - could anyone point me to the right direction? I need a
textfield that is attachable to any model and populating this field
will populate related TaggedItems table (and in future the Tag table):
Code paste:
http://dpaste.com/97545/
Code itself (in case pated code gets removed):
blog/models.py:
from django.db import models
from django.contrib.contenttypes import generic
from prymityw.tags.fields import *
class Post(models.Model):
def __unicode__(self):
return self.title
title = models.CharField(max_length=200)
author = models.CharField(max_length=100)
pub_date = models.DateTimeField('date published')
slug = models.CharField(max_length=200)
body = models.TextField()
tags = TagField(max_length=255)
tags/models.py:
from django.db import models
from django.contrib.contenttypes.models import ContentType
from django.contrib.contenttypes import generic
from django.utils.translation import ugettext_lazy as _
class Tag(models.Model):
"""
A tag.
"""
name = models.SlugField()
output_name = models.CharField(max_length=50, unique=True)
class Meta:
ordering = ('name',)
verbose_name = _('tag')
verbose_name_plural = _('tags')
def __unicode__(self):
return self.name
class TaggedItems(models.Model):
"""
Table holding generic tag relationship
"""
tag = models.SlugField()
content_type = models.ForeignKey(ContentType)
object_id = models.PositiveIntegerField()
content_object = generic.GenericForeignKey('content_type',
'object_id')
class Meta:
ordering = ["tag"]
def __unicode__(self):
return self.tag
# Create your models here.
tags/fields.py:
# -*- coding: utf-8 -*-
from django.db import models
from tags.models import *
def _tag_split(string):
list = string.split(",")
i = 0
for val in list:
list[i] = val.strip()
i = i + 1
clear_list = [x for x in list if x]
return clear_list
_transliteration_pl = (
(u"�", r'a'),
(u"\xc4\x85", r'a'),
(u"�", r'c'),
(u"\xc4\x87", r'c'),
(u"�", r'e'),
(u"\xc4\x99", r'e'),
(u"�", r'l'),
(u"\xc5\x82", r'l'),
(u"�", r'n'),
(u"\xc5\x84", r'n'),
(u"Ăł", r'o'),
(u"\xc3\xb3", r'o'),
(u"�", r's'),
(u"\xc5\x9b", r's'),
(u"Ĺź", r'z'),
(u"\xc5\xbc", r'z'),
(u"Ĺş", r'z'),
(u"\xc5\xba", r'z')
)
def _transliterate(value):
"""Replaces language specific chars with theis non-specific
equivalents"""
for bad, good in _transliteration_pl:
value = value.replace(bad, good)
return value
class TagField(models.CharField):
__metaclass__ = models.SubfieldBase
def __init__(self, *args, **kwargs):
super(TagField, self).__init__(*args, **kwargs)
def to_python(self, value):
if not value: return
if isinstance(value, list):
return value
return _tag_split(value)
def get_db_prep_value(self, value):
if not value: return
assert(isinstance(value, list) or isinstance(value, tuple))
for tag in value:
t = TaggedItems(content_object=self, tag=tag)
t.save()
return ",".join([unicode(s) for s in value])
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