因此,我一直无法将这种视图转换为Ajax调用:
def company_single(request, slug): company = get_object_or_404(CompanyProfile, slug=slug) company_list = CompanyProfile.objects.get(slug=slug) try: tcompany = CompanyLikes.objects.get(company=company_list) total_likes = tcompany.likes user_liked = CompanyLikes.objects.get(user=request.user) except: total_likes = 0 instance, created = CompanyLikes.objects.get_or_create(company=company_list) likes_form = CompanyLikesForm(request.POST or None, instance=instance) if likes_form.is_valid(): this = likes_form.save(commit=False) try: if user_liked: this.likes -=1 this.user.remove(request.user) except: this.user.add(request.user) this.likes += 1 this.save() return render_to_response('company.html', locals(), context_instance=RequestContext(request))
我想我需要jQuery和JSON,但是我不确定如何在此处实现它以便为我的网站创建自己的“赞按钮”。有什么想法/建议吗?
我举一个例子。您只需从中学习并进行相应的更改。
myapp.models.py (简化的公司模型):
from django.db import models from django.contrib.auth.models import User from django.template.defaultfilters import slugify class Company(models.Model): name = models.CharField(max_length=255) slug = models.SlugField() likes = models.ManyToManyField(User, related_name='likes') @property def total_likes(self): """ Likes for the company :return: Integer: Likes for the company """ return self.likes.count() def save(self, *args, **kwargs): self.slug = slugify(self.name) super(Company, self).save(*args, **kwargs)
myapp.urls.py (视图的URL):
url(r'^like/$', 'myapp.views.like', name='like'),
myapp.views.py (查看):
from django.http import HttpResponse try: from django.utils import simplejson as json except ImportError: import json from django.shortcuts import get_object_or_404 from django.contrib.auth.decorators import login_required from django.views.decorators.http import require_POST from myapp.models import Company @login_required @require_POST def like(request): if request.method == 'POST': user = request.user slug = request.POST.get('slug', None) company = get_object_or_404(Company, slug=slug) if company.likes.filter(id=user.id).exists(): # user has already liked this company # remove like/user company.likes.remove(user) message = 'You disliked this' else: # add a new like for a company company.likes.add(user) message = 'You liked this' ctx = {'likes_count': company.total_likes, 'message': message} # use mimetype instead of content_type if django < 5 return HttpResponse(json.dumps(ctx), content_type='application/json')
模板:
<input type="button" id="like" name="{{ company_slug }}" value="Like" /> <script> $('#like').click(function(){ $.ajax({ type: "POST", url: "{% url 'like' %}", data: {'slug': $(this).attr('name'), 'csrfmiddlewaretoken': '{{ csrf_token }}'}, dataType: "json", success: function(response) { alert(response.message); alert('Company likes count is now ' + response.likes_count); }, error: function(rs, e) { alert(rs.responseText); } }); }) </script>
在模板中使用url标签的一些说明:
Django < 1.3
url
{% url like %}
Django > 1.3 and < 1.5
{% load url from future %} at top level of your template and enclosed your URL name with quotes as I have done in my answer
Django >= 1.5
{% load url from future %}
Django 1.9