在django

时间:2017-11-30 16:13:04

标签: python django django-models django-taggit

我正在尝试使用TaggableManager()在django应用程序中添加我的表单中的标签,但这似乎不起作用。

class UserBookmark(models.Model):

    user = models.ForeignKey(User)
    bookmark = models.URLField()
    tag = TaggableManager()

    def __str__(self):
        return '%i %s %s'%(self.id,self.user,self.bookmark)

我的html模板:

<div class="modal-body">
   <form name = "form2" id = "form2" method = "post" action = "{% url 'savetag' %}" class = "form-inline">
      {% csrf_token %}
      <div class = "form-group">
         <input name = "tag"  id = "tag" required>
         <input type="hidden" id = "field1" name="bookmark" value="">
         <button type = "submit" class = "btn btn-danger">Save</button>
      </div>
   </form>
</div>

views.py:

def save_tag(request):

    tagslist = request.POST.getlist("tag")
    bookmark = request.POST.get("bookmark")
    obj=UserBookmark.objects.get(bookmark = bookmark)
    user = request.user.pk
    obj.tag = tagslist
    obj.save()

当我点击此查询时

UserBookmark.objects.filter(tag__name__in = ['java'])

我得到空集, 虽然我有这个标签java的记录。

之前我的UserBookmark模型标记属性为CharField

tag = models.CharField(max_length = 100)

但是这不起作用,因为标签有很多关系,因为书签可以有很多标签,所以CharField不起作用。

有人可以告诉我这里需要纠正什么吗?

1 个答案:

答案 0 :(得分:1)

您必须使用 add() 在ManyToMany字段中添加项目

def save_tag(request):
   # Use get() instead of getlist() beacuse in request it is a string 'Python,Data Science' not array
   tagslist = request.POST.get("tag")
   # Use split to make it a list
   tagslist = [str(r) for r in taglist.split(',')]
   ...
   # use add to add item in ManyToMany field.
   obj.tag.add(*tagslist)
   obj.save()

现在您的查询工作正常。