CODEWITHSUNDEEP
pythondjangodjango-modelsdjango-formsdjango-views
user3487775
user3487775

Reputation: 147

Django UpdateView with ImageField attribute

I am having trouble in making UpdateView Class.I was able to do createView and UpdateView without adding any form before adding up the imageField. But now I have imageField, which is creating problem. Fortunately, I am able to do createView and its working fine.

Following is my code for CreateView

class CreatePostView(FormView):
    form_class = PostForm
    template_name = 'edit_post.html'

    def get_success_url(self):
        return reverse('post-list')
    def form_valid(self, form):
        form.save(commit=True)
        # messages.success(self.request, 'File uploaded!')
        return super(CreatePostView, self).form_valid(form)
    def get_context_data(self, **kwargs):
        context = super(CreatePostView, self).get_context_data(**kwargs)
        context['action'] = reverse('post-new')
        return context

However, I tried to do UpdateView(ViewForm). Following is my code : 

class UpdatePostView(SingleObjectMixin,FormView):
model = Post
form_class = PostForm
tempate_name = 'edit_post.html'

# fields = ['title', 'description','content','published','upvote','downvote','image','thumbImage']

def get_success_url(self):
    return reverse('post-list')
def form_valid(self, form):
    form.save(commit=True)
    # messages.success(self.request, 'File uploaded!')
    return super(UpdatePostView, self).form_valid(form)

def get_context_data(self, **kwargs):
    context = super(UpdatePostView, self).get_context_data(**kwargs)
    context['action'] = reverse('post-edit',
                                kwargs={'pk': self.get_object().id})
    return context

When I try to run the updateView, its giving me following error:

AttributeError at /posts/edit/23/

'UpdatePostView' object has no attribute 'get_object'

Request Method: GET Request URL: http://localhost:8000/posts/edit/23/ Django Version: 1.8.2 Exception Type: AttributeError Exception Value:

'UpdatePostView' object has no attribute 'get_object'

Exception Location: /home/PostFunctions/mysite/post/views.py in get_context_data, line 72 Python Executable: /usr/bin/python Python Version: 2.7.6

Following is my url.py : 

#ex : /posts/edit/3/

url(r'^edit/(?P<pk>\d+)/$', post.views.UpdatePostView.as_view(),
    name='post-edit',),

Upvotes: 3

Views: 2548

Answers (1)

Bestasttung
Bestasttung

Reputation: 2458

I have a form to update Model with ImageField. I do extend a ModelForm for my model (which is PostForm for you I guess).

But my CustomUpdateView extend UpdateView, from django generic view.

from django.views.generic.edit import UpdateView
from django.shortcuts import get_object_or_404


class CustomUpdateView(UpdateView):
    template_name = 'some_template.html'
    form_class = CustomModelForm
    success_url = '/some/url'

    def get_object(self): #and you have to override a get_object method
        return get_object_or_404(YourModel, id=self.request.GET.get('pk'))

You just have to define a get_object method and update view will update the object with value in form, but it needs to get the object you want to update.

get_object_or_404() works like a get() function on a Model, so replace id by the name of your field_id.

Hope it helps

Upvotes: 2

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