Не доводилось раніше використовувати динамічний select, тобто select, який через ajax підтягує значення відповідно до значення вибраного в попередньому select'і. Тож довелось розібратись. Пропоную свій код, який не претендує на супер-оригінальність
models.py
# -*- coding:utf-8 -*-
from decimal import Decimal
from django.db import models
from django.db.models import permalink
class Category(models.Model):
name = models.CharField(max_length=60)
slug = models.SlugField(max_length=60, unique=True)
order = models.IntegerField(default=255)
count_posts = models.IntegerField(default=0)
class Meta:
ordering = ['order']
def __unicode__(self):
return self.name
class SubCategory(models.Model):
name = models.CharField(max_length=60)
slug = models.SlugField(max_length=60)
parent = models.ForeignKey(Category, null=True, blank=True, related_name='subcategories')
count_posts = models.IntegerField(default=0)
order = models.IntegerField(default=255)
class Meta:
unique_together = (('parent', 'slug'),)
ordering = ['name']
def __unicode__(self):
return u'%s -> %s' % (self.parent, self.name)
class Post(models.Model):
DENIED_STATUS = 0
APPROVED_STATUS = 1
PENDING_STATUS = 2
POST_STATUS=(
(DENIED_STATUS, 'Denied'),
(APPROVED_STATUS, 'Approved'),
(PENDING_STATUS, 'Pending'),
)
OFFER = 1
DEMAND = 2
SERVICES = 3
RENTAL = 4
ABSTRACT = 5
VACANCY = 6
POST_SUBJ=(
(OFFER, u'Попит'),
(DEMAND, u'Пропозиція'),
(SERVICES, u'Послуги'),
(RENTAL, u'Аренда'),
(ABSTRACT, u'Резюме'),
(VACANCY, u'Вакансії'),
)
category = models.ForeignKey(SubCategory)
subj=models.IntegerField(u'Тип', max_length=1, choices=POST_SUBJ, default=OFFER)
status=models.IntegerField(u'Стан', max_length=1, choices=POST_STATUS, default=APPROVED_STATUS)
title = models.CharField(max_length=60)
slug = models.SlugField(max_length=60)
body = models.CharField(max_length=250)
contact = models.CharField(max_length=120)
email = models.CharField(max_length=100, null=True, blank=True)
price = models.DecimalField(max_digits=8, decimal_places=2, default=Decimal('0.00'), )
ip_address = models.IPAddressField(u'IP address', null=True, blank=True)
youtube = models.CharField(max_length=100, null=True, blank=True)
site_link = models.CharField(max_length=100, null=True, blank=True)
posted_on = models.DateTimeField(auto_now_add=True)
class Meta:
ordering = ['posted_on']
def __unicode__(self):
return u'%s' % self.title
@permalink
def get_absolute_url(self):
return (
'ogo_ogo', None, {
'cat_slug':self.category.parent.slug,
'sub_cat_slug':self.category.slug,
'id':self.pk,
})
def formattedprice(self):
return u'%01.2f' % self.price
def save(self, *args, **kwargs):
super(Post, self).save(*args, ** kwargs)
views.py
@render_to('')
def add(request, form_class=AddPostForm, template="add.html"):
if request.method == "POST":
form = form_class(request.POST)
if form.is_valid():
new_obj = form.save()
return redirect(reverse('ogo_add_complete', kwargs={'id':new_obj.id,}))
else:
form = form_class()
return {
"form": form,
}, template
@render_json
def fetch_subcat_json(request):
result = list()
try:
cat = Category.objects.get(pk=int(request.GET.get('id', '')))
sub_cat = SubCategory.objects.filter(parent=cat)
result.append({ 'optionDisplay': '-- Оберіть категорію --', "optionValue" : '' })
for sc in sub_cat:
result.append({ 'optionDisplay': sc.name, "optionValue" : sc.pk })
except:
result.append({ 'optionDisplay': '-- Оберіть категорію --', "optionValue" : '' })
return result
forms.py
# -*- coding:utf-8 -*-
from types import *
from django import forms
from django.utils.translation import ugettext_lazy as _, ugettext
from django.template.defaultfilters import slugify
from apps.ogo.models import Post, Category, SubCategory
class AddPostForm(forms.Form):
category = forms.ChoiceField(required=True,)
sub_category = forms.ChoiceField(required=True,)
type_post = forms.ChoiceField(required=True,)
title = forms.CharField(label=_(u'Заголовок'), max_length=100, widget=forms.TextInput())
contact = forms.CharField(label=_(u'Конакт'), max_length=100, widget=forms.TextInput())
body = forms.CharField(label=_(u"Текст оголошення"),max_length = 350, widget = forms.Textarea, required=True)
contact = forms.CharField(label=_(u'Конакт'), max_length=100, widget=forms.TextInput())
price = forms.CharField(label=_(u'Вартість, грн.'), max_length=10, widget=forms.TextInput(),required=True)
def __init__(self, *args, **kwargs):
super(AddPostForm, self).__init__(*args, **kwargs)
self.sub_cat = SubCategory.objects.all()
CAT_CHOICES = [('', '-- Оберіть --'), ] + [(c.pk, c.name) for c in Category.objects.all().order_by("pk")]
SUBCAT_CHOICES = [('', '-- Оберіть категорію --'),]
TYPE_CHOICES = [('', '-- Оберіть --'), ] + [(t[0], t[1]) for t in Post.POST_SUBJ]
try:
init_cat = int(args[0]['category'])
SUBCAT_CHOICES = [('', '-- Оберіть --'), ] + [(c.pk, c.name) for c in SubCategory.objects.filter(parent=init_cat).order_by("pk")]
except:
init_cat = None
try:
init_sub_cat = int(args[0]['sub_category'])
SUBCAT_CHOICES = [('', '-- Оберіть --'), ] + [(c.pk, c.name) for c in SubCategory.objects.filter(parent=init_cat).order_by("pk")]
except:
init_sub_cat = None
try:
init_type = int(args[0]['type_post'])
except:
init_type=None
self.fields['category'] = forms.ChoiceField(choices=CAT_CHOICES, label=u'Категорія', initial=init_cat)
self.fields['sub_category'] = forms.ChoiceField(choices=SUBCAT_CHOICES, label=u'Підкатегорія', initial=init_sub_cat)
self.fields['type_post'] = forms.ChoiceField(choices=TYPE_CHOICES, label=u'Тип', initial=init_type)
def save(self):
return Post.objects.create(
category = self.sub_cat.get(pk=self.cleaned_data["sub_category"]),
subj = self.cleaned_data["type_post"],
title = self.cleaned_data["title"],
slug = slugify(self.cleaned_data["title"]),
body = self.cleaned_data["body"],
contact = self.cleaned_data["contact"],
price = self.cleaned_data["price"],
)
add.html
urls.py
# -*- coding:utf-8 -*-
from django.conf.urls.defaults import *
urlpatterns = patterns('ogo.views',
url(r'^dodaty/', 'add', name = "ogo_add"),
url(r'^dodano-uspishno/(?P\d{1,5})/$', 'add_complete', name = "ogo_add_complete"),
url(r'^fetch-subcat/$', 'fetch_subcat_json', name = "fetch_subcat"),
)
