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Get context from another CBV with Django

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0

I would like to get your help in order to use context from a Django CBV in another CBV through get_context_data().

Objective:

Basically, I have a django ListView() with pagination. I pick up the current page in get_context_data(). Then, I would like to edit an object, so I'm going to UpdateView().

When I post the edit, it should return to the previous pagination. For example, if the object was on page 32, after the POST request, I need to be redirected to page 32.

My code:

class DocumentListView(AdminMixin, CustomListSearchView):
 """ Render the list of document """

 def get_context_data(self, **kwargs):
 context = super(DocumentListView, self).get_context_data(**kwargs)

 actual_page = self.request.GET.get('page', 1)
 if actual_page:
 context['actual_page'] = actual_page
 return context

class DocumentFormView(CustomPermissionRequiredMixin, DocumentListView, UpdateView):

 def get_current_page(self, **kwargs):
 context = super(DocumentListView, self).get_context_data(**kwargs)
 actual_page = context['actual_page']
 return actual_page

 def get_context_data(self, **kwargs):
 context = super(DocumentFormView, self).get_context_data(**kwargs)
 print(self.get_current_page())
 ... 
 return context

 def post(self, request, pk=None):
 ...
 return render(request, 'app/manage_document_form.html', context)

Issue:

I don't overcome to get the actual_page in my class DocumentFormView.

I got this issue :

AttributeError: 'DocumentFormView' object has no attribute 'object'

I tried to add in my post() function :

self.object = self.get_object()

But it doesn't solve the issue.

Do you have any idea ?

python django django-views django-pagination

share|improve this question

asked Mar 8 at 9:45

EssexEssex

2,73512159

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  This isn't at all what you want to do. It doesn't make any sense to use super like that, let alone have two separate methods calling two separate super methods. But quite apart from anything else, the data is coming from the request; if you need the value from the page parameter in the form view, it needs to be present in the request for that view.
  
  – Daniel Roseman
  Mar 8 at 9:51
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @DanielRoseman Ok, but if I understand well the url according to my form view doesn't display any information from pagination in ListView(). So I don't see how I can pick up data from url through a GET request. In my ListView(), the url looks like this : http://localhost:8000/crud/document/list/?page=72 and in my UpdateView() : http://localhost:8000/crud/document/update/150/
  
  – Essex
  Mar 8 at 9:59
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  If it's not in the URL there is no way your view can get it. Your code is doubly mistaken in that case. You need to actually include the parameter in the URL you use for the form view.
  
  – Daniel Roseman
  Mar 8 at 10:05
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Hum ok I have to see how I can do that. Thank you for your explanation anyway !
  
  – Essex
  Mar 8 at 10:08
  

  
  
  
  

add a comment | 

0

I would like to get your help in order to use context from a Django CBV in another CBV through get_context_data().

Objective:

Basically, I have a django ListView() with pagination. I pick up the current page in get_context_data(). Then, I would like to edit an object, so I'm going to UpdateView().

When I post the edit, it should return to the previous pagination. For example, if the object was on page 32, after the POST request, I need to be redirected to page 32.

My code:

class DocumentListView(AdminMixin, CustomListSearchView):
 """ Render the list of document """

 def get_context_data(self, **kwargs):
 context = super(DocumentListView, self).get_context_data(**kwargs)

 actual_page = self.request.GET.get('page', 1)
 if actual_page:
 context['actual_page'] = actual_page
 return context

class DocumentFormView(CustomPermissionRequiredMixin, DocumentListView, UpdateView):

 def get_current_page(self, **kwargs):
 context = super(DocumentListView, self).get_context_data(**kwargs)
 actual_page = context['actual_page']
 return actual_page

 def get_context_data(self, **kwargs):
 context = super(DocumentFormView, self).get_context_data(**kwargs)
 print(self.get_current_page())
 ... 
 return context

 def post(self, request, pk=None):
 ...
 return render(request, 'app/manage_document_form.html', context)

Issue:

I don't overcome to get the actual_page in my class DocumentFormView.

I got this issue :

AttributeError: 'DocumentFormView' object has no attribute 'object'

I tried to add in my post() function :

self.object = self.get_object()

But it doesn't solve the issue.

Do you have any idea ?

python django django-views django-pagination

share|improve this question

asked Mar 8 at 9:45

EssexEssex

2,73512159

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  This isn't at all what you want to do. It doesn't make any sense to use super like that, let alone have two separate methods calling two separate super methods. But quite apart from anything else, the data is coming from the request; if you need the value from the page parameter in the form view, it needs to be present in the request for that view.
  
  – Daniel Roseman
  Mar 8 at 9:51
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @DanielRoseman Ok, but if I understand well the url according to my form view doesn't display any information from pagination in ListView(). So I don't see how I can pick up data from url through a GET request. In my ListView(), the url looks like this : http://localhost:8000/crud/document/list/?page=72 and in my UpdateView() : http://localhost:8000/crud/document/update/150/
  
  – Essex
  Mar 8 at 9:59
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  If it's not in the URL there is no way your view can get it. Your code is doubly mistaken in that case. You need to actually include the parameter in the URL you use for the form view.
  
  – Daniel Roseman
  Mar 8 at 10:05
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Hum ok I have to see how I can do that. Thank you for your explanation anyway !
  
  – Essex
  Mar 8 at 10:08
  

  
  
  
  

add a comment | 

I would like to get your help in order to use context from a Django CBV in another CBV through get_context_data().

Objective:

Basically, I have a django ListView() with pagination. I pick up the current page in get_context_data(). Then, I would like to edit an object, so I'm going to UpdateView().

When I post the edit, it should return to the previous pagination. For example, if the object was on page 32, after the POST request, I need to be redirected to page 32.

My code:

class DocumentListView(AdminMixin, CustomListSearchView):
 """ Render the list of document """

 def get_context_data(self, **kwargs):
 context = super(DocumentListView, self).get_context_data(**kwargs)

 actual_page = self.request.GET.get('page', 1)
 if actual_page:
 context['actual_page'] = actual_page
 return context

class DocumentFormView(CustomPermissionRequiredMixin, DocumentListView, UpdateView):

 def get_current_page(self, **kwargs):
 context = super(DocumentListView, self).get_context_data(**kwargs)
 actual_page = context['actual_page']
 return actual_page

 def get_context_data(self, **kwargs):
 context = super(DocumentFormView, self).get_context_data(**kwargs)
 print(self.get_current_page())
 ... 
 return context

 def post(self, request, pk=None):
 ...
 return render(request, 'app/manage_document_form.html', context)

Issue:

I don't overcome to get the actual_page in my class DocumentFormView.

I got this issue :

AttributeError: 'DocumentFormView' object has no attribute 'object'

I tried to add in my post() function :

self.object = self.get_object()

But it doesn't solve the issue.

Do you have any idea ?

python django django-views django-pagination

share|improve this question

asked Mar 8 at 9:45

EssexEssex

2,73512159

class DocumentListView(AdminMixin, CustomListSearchView):
 """ Render the list of document """

 def get_context_data(self, **kwargs):
 context = super(DocumentListView, self).get_context_data(**kwargs)

 actual_page = self.request.GET.get('page', 1)
 if actual_page:
 context['actual_page'] = actual_page
 return context

class DocumentFormView(CustomPermissionRequiredMixin, DocumentListView, UpdateView):

 def get_current_page(self, **kwargs):
 context = super(DocumentListView, self).get_context_data(**kwargs)
 actual_page = context['actual_page']
 return actual_page

 def get_context_data(self, **kwargs):
 context = super(DocumentFormView, self).get_context_data(**kwargs)
 print(self.get_current_page())
 ... 
 return context

 def post(self, request, pk=None):
 ...
 return render(request, 'app/manage_document_form.html', context)

self.object = self.get_object()

share|improve this question

asked Mar 8 at 9:45

EssexEssex

2,73512159

share|improve this question

asked Mar 8 at 9:45

EssexEssex

2,73512159

asked Mar 8 at 9:45

EssexEssex

2,73512159

asked Mar 8 at 9:45

EssexEssex

2,73512159