Mixing
Passing Parameter for Queryset to Django Form
I am using a django (2.1) ModelMultipleChoice field for a form. I am trying to modify the queryset based on the slug in the URL. I am pretty certain I am missing something stupid.
The Form:
class SubdomainForm(forms.Form):
# TODO Get the value slug from init
slug = "camp" # Works well if value of slug set here.
q = Feature2Subdomain.objects.all().select_related().filter(subdomain__slug=slug)
choices = forms.ModelMultipleChoiceField(
queryset = q,
widget = forms.CheckboxSelectMultiple,
)
def __init__(self, *args, **kwargs):
slug = kwargs.pop('slug', None) # Correctly obtains slug from url
super(SubdomainForm, self).__init__(*args, **kwargs)
The View:
class SubdomainDetailView(FormView):
template_name = "guide/subdomain-detail.html"
form_class = SubdomainForm
def get_form_kwargs(self, form_class=SubdomainForm):
s = dict(slug = self.kwargs['slug'])
return s
URLS.py
urlpatterns = [
path('subdomain/<slug:slug>/',
SubdomainDetailView.as_view(),
name="subdomain-detail"
),
.....
Obviously, the idea is that the slug from the URL is used to modify the queryset. (in the example the value of the slug is "camp"
I can obtain the value of the slug in the init method for the form, and can call super() to instantiate the form. However, I can't figure out how to access the value in the "choices" line of the form. If I hard code the value of slug="camp" I can get the whole thing to work properly.
I've been working on this for a couple of days and have exhausted all the examples in SO and on google.
I tried moving the "choices" assignment into the init method and using
self.choices = forms.ModelMultipleChoiceField(
queryset = Feature2Subdomain.objects.all().select_related().filter(subdomain__slug=slug)
widget = forms.CheckboxSelectMultiple,
)
But this is not then displaying the correct response (it returns an empty form)
Also tried assigning the queryset in the init method like this.
class SubdomainForm(forms.Form):
choices = forms.ModelMultipleChoiceField(
widget = forms.CheckboxSelectMultiple,
)
def __init__(self, *args, **kwargs):
slug = kwargs.pop('slug', None) # Correctly obtains slug from url
self.queryset = Feature2Subdomain.objects.all().select_related().filter(subdomain__slug=slug)
super(SubdomainForm, self).__init__(*args, **kwargs)
I then get the error:
TypeError: init() missing 1 required positional argument: 'queryset'
Feeling quite lost on where to go next.
Any help would be appreciate.
django django-forms
asked Dec 31 '18 at 15:27
jeffrey.francjeffrey.franc
82
add a comment |
I am using a django (2.1) ModelMultipleChoice field for a form. I am trying to modify the queryset based on the slug in the URL. I am pretty certain I am missing something stupid.
The Form:
class SubdomainForm(forms.Form):
# TODO Get the value slug from init
slug = "camp" # Works well if value of slug set here.
q = Feature2Subdomain.objects.all().select_related().filter(subdomain__slug=slug)
choices = forms.ModelMultipleChoiceField(
queryset = q,
widget = forms.CheckboxSelectMultiple,
)
def __init__(self, *args, **kwargs):
slug = kwargs.pop('slug', None) # Correctly obtains slug from url
super(SubdomainForm, self).__init__(*args, **kwargs)
The View:
class SubdomainDetailView(FormView):
template_name = "guide/subdomain-detail.html"
form_class = SubdomainForm
def get_form_kwargs(self, form_class=SubdomainForm):
s = dict(slug = self.kwargs['slug'])
return s
URLS.py
urlpatterns = [
path('subdomain/<slug:slug>/',
SubdomainDetailView.as_view(),
name="subdomain-detail"
),
.....
Obviously, the idea is that the slug from the URL is used to modify the queryset. (in the example the value of the slug is "camp"
I can obtain the value of the slug in the init method for the form, and can call super() to instantiate the form. However, I can't figure out how to access the value in the "choices" line of the form. If I hard code the value of slug="camp" I can get the whole thing to work properly.
I've been working on this for a couple of days and have exhausted all the examples in SO and on google.
I tried moving the "choices" assignment into the init method and using
self.choices = forms.ModelMultipleChoiceField(
queryset = Feature2Subdomain.objects.all().select_related().filter(subdomain__slug=slug)
widget = forms.CheckboxSelectMultiple,
)
But this is not then displaying the correct response (it returns an empty form)
Also tried assigning the queryset in the init method like this.
class SubdomainForm(forms.Form):
choices = forms.ModelMultipleChoiceField(
widget = forms.CheckboxSelectMultiple,
)
def __init__(self, *args, **kwargs):
slug = kwargs.pop('slug', None) # Correctly obtains slug from url
self.queryset = Feature2Subdomain.objects.all().select_related().filter(subdomain__slug=slug)
super(SubdomainForm, self).__init__(*args, **kwargs)
I then get the error:
TypeError: init() missing 1 required positional argument: 'queryset'
Feeling quite lost on where to go next.
Any help would be appreciate.
django django-forms
asked Dec 31 '18 at 15:27
jeffrey.francjeffrey.franc
82
add a comment |
I am using a django (2.1) ModelMultipleChoice field for a form. I am trying to modify the queryset based on the slug in the URL. I am pretty certain I am missing something stupid.
The Form:
class SubdomainForm(forms.Form):
# TODO Get the value slug from init
slug = "camp" # Works well if value of slug set here.
q = Feature2Subdomain.objects.all().select_related().filter(subdomain__slug=slug)
choices = forms.ModelMultipleChoiceField(
queryset = q,
widget = forms.CheckboxSelectMultiple,
)
def __init__(self, *args, **kwargs):
slug = kwargs.pop('slug', None) # Correctly obtains slug from url
super(SubdomainForm, self).__init__(*args, **kwargs)
The View:
class SubdomainDetailView(FormView):
template_name = "guide/subdomain-detail.html"
form_class = SubdomainForm
def get_form_kwargs(self, form_class=SubdomainForm):
s = dict(slug = self.kwargs['slug'])
return s
URLS.py
urlpatterns = [
path('subdomain/<slug:slug>/',
SubdomainDetailView.as_view(),
name="subdomain-detail"
),
.....
Obviously, the idea is that the slug from the URL is used to modify the queryset. (in the example the value of the slug is "camp"
I can obtain the value of the slug in the init method for the form, and can call super() to instantiate the form. However, I can't figure out how to access the value in the "choices" line of the form. If I hard code the value of slug="camp" I can get the whole thing to work properly.
I've been working on this for a couple of days and have exhausted all the examples in SO and on google.
I tried moving the "choices" assignment into the init method and using
self.choices = forms.ModelMultipleChoiceField(
queryset = Feature2Subdomain.objects.all().select_related().filter(subdomain__slug=slug)
widget = forms.CheckboxSelectMultiple,
)
But this is not then displaying the correct response (it returns an empty form)
Also tried assigning the queryset in the init method like this.
class SubdomainForm(forms.Form):
choices = forms.ModelMultipleChoiceField(
widget = forms.CheckboxSelectMultiple,
)
def __init__(self, *args, **kwargs):
slug = kwargs.pop('slug', None) # Correctly obtains slug from url
self.queryset = Feature2Subdomain.objects.all().select_related().filter(subdomain__slug=slug)
super(SubdomainForm, self).__init__(*args, **kwargs)
I then get the error:
TypeError: init() missing 1 required positional argument: 'queryset'
Feeling quite lost on where to go next.
Any help would be appreciate.
django django-forms
asked Dec 31 '18 at 15:27
jeffrey.francjeffrey.franc
82
I am using a django (2.1) ModelMultipleChoice field for a form. I am trying to modify the queryset based on the slug in the URL. I am pretty certain I am missing something stupid.
The Form:
class SubdomainForm(forms.Form):
# TODO Get the value slug from init
slug = "camp" # Works well if value of slug set here.
q = Feature2Subdomain.objects.all().select_related().filter(subdomain__slug=slug)
choices = forms.ModelMultipleChoiceField(
queryset = q,
widget = forms.CheckboxSelectMultiple,
)
def __init__(self, *args, **kwargs):
slug = kwargs.pop('slug', None) # Correctly obtains slug from url
super(SubdomainForm, self).__init__(*args, **kwargs)
The View:
class SubdomainDetailView(FormView):
template_name = "guide/subdomain-detail.html"
form_class = SubdomainForm
def get_form_kwargs(self, form_class=SubdomainForm):
s = dict(slug = self.kwargs['slug'])
return s
URLS.py
urlpatterns = [
path('subdomain/<slug:slug>/',
SubdomainDetailView.as_view(),
name="subdomain-detail"
),
.....
Obviously, the idea is that the slug from the URL is used to modify the queryset. (in the example the value of the slug is "camp"
I can obtain the value of the slug in the init method for the form, and can call super() to instantiate the form. However, I can't figure out how to access the value in the "choices" line of the form. If I hard code the value of slug="camp" I can get the whole thing to work properly.
I've been working on this for a couple of days and have exhausted all the examples in SO and on google.
I tried moving the "choices" assignment into the init method and using
self.choices = forms.ModelMultipleChoiceField(
queryset = Feature2Subdomain.objects.all().select_related().filter(subdomain__slug=slug)
widget = forms.CheckboxSelectMultiple,
)
But this is not then displaying the correct response (it returns an empty form)
Also tried assigning the queryset in the init method like this.
class SubdomainForm(forms.Form):
choices = forms.ModelMultipleChoiceField(
widget = forms.CheckboxSelectMultiple,
)
def __init__(self, *args, **kwargs):
slug = kwargs.pop('slug', None) # Correctly obtains slug from url
self.queryset = Feature2Subdomain.objects.all().select_related().filter(subdomain__slug=slug)
super(SubdomainForm, self).__init__(*args, **kwargs)
I then get the error:
TypeError: init() missing 1 required positional argument: 'queryset'
Feeling quite lost on where to go next.
Any help would be appreciate.
django django-forms
django django-forms
asked Dec 31 '18 at 15:27
jeffrey.francjeffrey.franc
82
asked Dec 31 '18 at 15:27
jeffrey.francjeffrey.franc
82
asked Dec 31 '18 at 15:27
jeffrey.francjeffrey.franc
82
asked Dec 31 '18 at 15:27
jeffrey.francjeffrey.franc
82
asked Dec 31 '18 at 15:27
jeffrey.francjeffrey.franc
82
82
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
For your last attempt, you can modify the code like this:
class SubdomainForm(forms.Form):
choices = forms.ModelMultipleChoiceField(
widget = forms.CheckboxSelectMultiple,
queryset = Feature2Subdomain.objects.all()
)
def __init__(self, *args, **kwargs):
slug = kwargs.pop('slug', None) # Correctly obtains slug from url
self.fields['choices'].queryset = Feature2Subdomain.objects.filter(subdomain__slug=slug) # you don't need select related
super(SubdomainForm, self).__init__(*args, **kwargs)
answered Jan 1 at 6:14
ruddraruddra
15.2k32750
Got it. I need to declare a queryset in the form definition, but this is over-ridden by the init method.
– jeffrey.franc
Jan 2 at 15:10
add a comment |
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1 Answer
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active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
For your last attempt, you can modify the code like this:
class SubdomainForm(forms.Form):
choices = forms.ModelMultipleChoiceField(
widget = forms.CheckboxSelectMultiple,
queryset = Feature2Subdomain.objects.all()
)
def __init__(self, *args, **kwargs):
slug = kwargs.pop('slug', None) # Correctly obtains slug from url
self.fields['choices'].queryset = Feature2Subdomain.objects.filter(subdomain__slug=slug) # you don't need select related
super(SubdomainForm, self).__init__(*args, **kwargs)
answered Jan 1 at 6:14
ruddraruddra
15.2k32750
Got it. I need to declare a queryset in the form definition, but this is over-ridden by the init method.
– jeffrey.franc
Jan 2 at 15:10
add a comment |
For your last attempt, you can modify the code like this:
class SubdomainForm(forms.Form):
choices = forms.ModelMultipleChoiceField(
widget = forms.CheckboxSelectMultiple,
queryset = Feature2Subdomain.objects.all()
)
def __init__(self, *args, **kwargs):
slug = kwargs.pop('slug', None) # Correctly obtains slug from url
self.fields['choices'].queryset = Feature2Subdomain.objects.filter(subdomain__slug=slug) # you don't need select related
super(SubdomainForm, self).__init__(*args, **kwargs)
answered Jan 1 at 6:14
ruddraruddra
15.2k32750
Got it. I need to declare a queryset in the form definition, but this is over-ridden by the init method.
– jeffrey.franc
Jan 2 at 15:10
add a comment |
For your last attempt, you can modify the code like this:
class SubdomainForm(forms.Form):
choices = forms.ModelMultipleChoiceField(
widget = forms.CheckboxSelectMultiple,
queryset = Feature2Subdomain.objects.all()
)
def __init__(self, *args, **kwargs):
slug = kwargs.pop('slug', None) # Correctly obtains slug from url
self.fields['choices'].queryset = Feature2Subdomain.objects.filter(subdomain__slug=slug) # you don't need select related
super(SubdomainForm, self).__init__(*args, **kwargs)
answered Jan 1 at 6:14
ruddraruddra
15.2k32750
For your last attempt, you can modify the code like this:
class SubdomainForm(forms.Form):
choices = forms.ModelMultipleChoiceField(
widget = forms.CheckboxSelectMultiple,
queryset = Feature2Subdomain.objects.all()
)
def __init__(self, *args, **kwargs):
slug = kwargs.pop('slug', None) # Correctly obtains slug from url
self.fields['choices'].queryset = Feature2Subdomain.objects.filter(subdomain__slug=slug) # you don't need select related
super(SubdomainForm, self).__init__(*args, **kwargs)
answered Jan 1 at 6:14
ruddraruddra
15.2k32750
answered Jan 1 at 6:14
ruddraruddra
15.2k32750
answered Jan 1 at 6:14
ruddraruddra
15.2k32750
answered Jan 1 at 6:14
ruddraruddra
15.2k32750
15.2k32750
Got it. I need to declare a queryset in the form definition, but this is over-ridden by the init method.
– jeffrey.franc
Jan 2 at 15:10
add a comment |
Got it. I need to declare a queryset in the form definition, but this is over-ridden by the init method.
– jeffrey.franc
Jan 2 at 15:10
Got it. I need to declare a queryset in the form definition, but this is over-ridden by the init method.
– jeffrey.franc
Jan 2 at 15:10
Got it. I need to declare a queryset in the form definition, but this is over-ridden by the init method.
– jeffrey.franc
Jan 2 at 15:10
add a comment |
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