Mixing
Get the list of related objects in django
I have 3 models:
class Node(models.Model):
ID = models.DecimalField(max_digits=19, decimal_places=10)
name = models.CharField(default='node', max_length=32)
connexion = models.CharField(max_length=255)
# Many2one fields | Foreign keys:
firm = models.ForeignKey('firme.Firme', on_delete=models.CASCADE, null=True, blank=True)
class ScheduledAction(models.Model):
date = models.DateTimeField(default=datetime.now, blank=True)
firm = models.ForeignKey('firme.Firme', on_delete=models.CASCADE, null=True, blank=True)
node_ids = models.ManyToManyField(Node)
I want in ScheduledAction form to show, for a selected firm, the list of its related nodes. Normally I should do this by get:
class ScheduledActionForm(forms.ModelForm):
date = forms.DateTimeField()
firm = forms.ModelChoiceField(queryset=Firme.objects.all())
node_ids = forms.ModelMultipleChoiceField(queryset=Node.objects.get(firm_id=firm.id), widget=forms.CheckboxSelectMultiple)
class Meta:
model = ScheduledAction
fields = [
'date',
'firm',
'node_ids'
]
This is my views.py:
def planification_view(request, id):
scheduledAction = ScheduledActionForm(request.POST or None)
firme = get_object_or_404(Firme, id=id)
nodes = Node.objects.all()
if scheduledAction.is_valid():
scheduledAction.save()
print('formulaire enregistre')
scheduledAction = ScheduledActionForm()
context = {
'firme': firme,
'form': scheduledAction,
'nodes': nodes
}
return render(request, "node/planification.html", context)
But I got this error:
AttributeError: 'ModelChoiceField' object has no attribute 'id'
How can I fix this?
django django-models django-forms
asked Jan 2 at 10:00
TessnimTessnim
146117
add a comment |
I have 3 models:
class Node(models.Model):
ID = models.DecimalField(max_digits=19, decimal_places=10)
name = models.CharField(default='node', max_length=32)
connexion = models.CharField(max_length=255)
# Many2one fields | Foreign keys:
firm = models.ForeignKey('firme.Firme', on_delete=models.CASCADE, null=True, blank=True)
class ScheduledAction(models.Model):
date = models.DateTimeField(default=datetime.now, blank=True)
firm = models.ForeignKey('firme.Firme', on_delete=models.CASCADE, null=True, blank=True)
node_ids = models.ManyToManyField(Node)
I want in ScheduledAction form to show, for a selected firm, the list of its related nodes. Normally I should do this by get:
class ScheduledActionForm(forms.ModelForm):
date = forms.DateTimeField()
firm = forms.ModelChoiceField(queryset=Firme.objects.all())
node_ids = forms.ModelMultipleChoiceField(queryset=Node.objects.get(firm_id=firm.id), widget=forms.CheckboxSelectMultiple)
class Meta:
model = ScheduledAction
fields = [
'date',
'firm',
'node_ids'
]
This is my views.py:
def planification_view(request, id):
scheduledAction = ScheduledActionForm(request.POST or None)
firme = get_object_or_404(Firme, id=id)
nodes = Node.objects.all()
if scheduledAction.is_valid():
scheduledAction.save()
print('formulaire enregistre')
scheduledAction = ScheduledActionForm()
context = {
'firme': firme,
'form': scheduledAction,
'nodes': nodes
}
return render(request, "node/planification.html", context)
But I got this error:
AttributeError: 'ModelChoiceField' object has no attribute 'id'
How can I fix this?
django django-models django-forms
asked Jan 2 at 10:00
TessnimTessnim
146117
add a comment |
I have 3 models:
class Node(models.Model):
ID = models.DecimalField(max_digits=19, decimal_places=10)
name = models.CharField(default='node', max_length=32)
connexion = models.CharField(max_length=255)
# Many2one fields | Foreign keys:
firm = models.ForeignKey('firme.Firme', on_delete=models.CASCADE, null=True, blank=True)
class ScheduledAction(models.Model):
date = models.DateTimeField(default=datetime.now, blank=True)
firm = models.ForeignKey('firme.Firme', on_delete=models.CASCADE, null=True, blank=True)
node_ids = models.ManyToManyField(Node)
I want in ScheduledAction form to show, for a selected firm, the list of its related nodes. Normally I should do this by get:
class ScheduledActionForm(forms.ModelForm):
date = forms.DateTimeField()
firm = forms.ModelChoiceField(queryset=Firme.objects.all())
node_ids = forms.ModelMultipleChoiceField(queryset=Node.objects.get(firm_id=firm.id), widget=forms.CheckboxSelectMultiple)
class Meta:
model = ScheduledAction
fields = [
'date',
'firm',
'node_ids'
]
This is my views.py:
def planification_view(request, id):
scheduledAction = ScheduledActionForm(request.POST or None)
firme = get_object_or_404(Firme, id=id)
nodes = Node.objects.all()
if scheduledAction.is_valid():
scheduledAction.save()
print('formulaire enregistre')
scheduledAction = ScheduledActionForm()
context = {
'firme': firme,
'form': scheduledAction,
'nodes': nodes
}
return render(request, "node/planification.html", context)
But I got this error:
AttributeError: 'ModelChoiceField' object has no attribute 'id'
How can I fix this?
django django-models django-forms
asked Jan 2 at 10:00
TessnimTessnim
146117
I have 3 models:
class Node(models.Model):
ID = models.DecimalField(max_digits=19, decimal_places=10)
name = models.CharField(default='node', max_length=32)
connexion = models.CharField(max_length=255)
# Many2one fields | Foreign keys:
firm = models.ForeignKey('firme.Firme', on_delete=models.CASCADE, null=True, blank=True)
class ScheduledAction(models.Model):
date = models.DateTimeField(default=datetime.now, blank=True)
firm = models.ForeignKey('firme.Firme', on_delete=models.CASCADE, null=True, blank=True)
node_ids = models.ManyToManyField(Node)
I want in ScheduledAction form to show, for a selected firm, the list of its related nodes. Normally I should do this by get:
class ScheduledActionForm(forms.ModelForm):
date = forms.DateTimeField()
firm = forms.ModelChoiceField(queryset=Firme.objects.all())
node_ids = forms.ModelMultipleChoiceField(queryset=Node.objects.get(firm_id=firm.id), widget=forms.CheckboxSelectMultiple)
class Meta:
model = ScheduledAction
fields = [
'date',
'firm',
'node_ids'
]
This is my views.py:
def planification_view(request, id):
scheduledAction = ScheduledActionForm(request.POST or None)
firme = get_object_or_404(Firme, id=id)
nodes = Node.objects.all()
if scheduledAction.is_valid():
scheduledAction.save()
print('formulaire enregistre')
scheduledAction = ScheduledActionForm()
context = {
'firme': firme,
'form': scheduledAction,
'nodes': nodes
}
return render(request, "node/planification.html", context)
But I got this error:
AttributeError: 'ModelChoiceField' object has no attribute 'id'
How can I fix this?
django django-models django-forms
django django-models django-forms
asked Jan 2 at 10:00
TessnimTessnim
146117
asked Jan 2 at 10:00
TessnimTessnim
146117
edited Jan 2 at 10:32
Tessnim
asked Jan 2 at 10:00
TessnimTessnim
146117
asked Jan 2 at 10:00
TessnimTessnim
146117
asked Jan 2 at 10:00
TessnimTessnim
146117
146117
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
There are several things wrong with your approach
first of all: you assigned the variable 'firm' to a form field and then using that same variable to get an object from the db won't work in anyway. The variable 'firm' in Node.objects.get(firm_id=firm.id) should be a firm instance.
second: queryset=Node.objects.get(firm_id=firm.id) won't work because Model.objects.get() will return an object not a query set.
If you want to show all the nodes for a specific Firm you will need to pass the firm object (or id or other identifier) to the form by for example passing it through the get_form_kwargs() if you are using CBV and filtering by it Node.objects.filter(firm_id=firm.id)
Update:
Since you are using function based views there might be a more dry way to do this, but I'm only used to working with CBV so I'll try my best
On the form we will declare a new variable called firme (we will pass this to the form in your view)
class ScheduledActionForm(forms.ModelForm):
def __init__(self, *args, **kwargs):
self.firme = kwargs.pop('firme')
super(ScheduledActionForm, self).__init__(*args, **kwargs)
self.fields['node_ids'].queryset = Node.objects.filter(firm_id=self.firme.id)
date = forms.DateTimeField()
firm = forms.ModelChoiceField(queryset=Firme.objects.all()) # why do you want a list of all firms here? Or do you want a single object?
node_ids = forms.ModelMultipleChoiceField(queryset=Node.objects.none()), widget=forms.CheckboxSelectMultiple)
class Meta:
model = ScheduledAction
fields = [
'date',
'firm',
'node_ids'
]
now for you view:
def planification_view(request, id):
firme = get_object_or_404(Firme, id=id)
nodes = Node.objects.all()
if request.method == 'POST':
form = ScheduledActionForm(data=request.POST, firme=firme)
if form.is_valid():
scheduledAction = form.save()
print('formulaire enregistre')
else:
form = ScheduledActionForm(firme=firme)
context = {
'firme': firme,
'form': form,
'nodes': nodes
}
return render(request, "node/planification.html", context)
Something along these lines should get you going. It might still require some tweaking to get it to work in your project. If you still have trouble understanding please read the Django docs and or do their tutorial
Update 2:
Not the prettiest solution but it works for the OP
answered Jan 2 at 10:15
MattMatt
1216
I'm new to Django, can you please explain your solution in detail? Thanks.
– Tessnim
Jan 2 at 10:20
can you show me the view you use to render the form?
– Matt
Jan 2 at 10:30
I updated my post and added my view function.
– Tessnim
Jan 2 at 10:33
I just updated my answer!
– Matt
Jan 2 at 10:57
I tried your code and got this error:NameError: name 'firme' is not defined
– Tessnim
Jan 2 at 11:33
|
show 4 more comments
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1 Answer
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1 Answer
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active
oldest
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oldest
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oldest
votes
There are several things wrong with your approach
first of all: you assigned the variable 'firm' to a form field and then using that same variable to get an object from the db won't work in anyway. The variable 'firm' in Node.objects.get(firm_id=firm.id) should be a firm instance.
second: queryset=Node.objects.get(firm_id=firm.id) won't work because Model.objects.get() will return an object not a query set.
If you want to show all the nodes for a specific Firm you will need to pass the firm object (or id or other identifier) to the form by for example passing it through the get_form_kwargs() if you are using CBV and filtering by it Node.objects.filter(firm_id=firm.id)
Update:
Since you are using function based views there might be a more dry way to do this, but I'm only used to working with CBV so I'll try my best
On the form we will declare a new variable called firme (we will pass this to the form in your view)
class ScheduledActionForm(forms.ModelForm):
def __init__(self, *args, **kwargs):
self.firme = kwargs.pop('firme')
super(ScheduledActionForm, self).__init__(*args, **kwargs)
self.fields['node_ids'].queryset = Node.objects.filter(firm_id=self.firme.id)
date = forms.DateTimeField()
firm = forms.ModelChoiceField(queryset=Firme.objects.all()) # why do you want a list of all firms here? Or do you want a single object?
node_ids = forms.ModelMultipleChoiceField(queryset=Node.objects.none()), widget=forms.CheckboxSelectMultiple)
class Meta:
model = ScheduledAction
fields = [
'date',
'firm',
'node_ids'
]
now for you view:
def planification_view(request, id):
firme = get_object_or_404(Firme, id=id)
nodes = Node.objects.all()
if request.method == 'POST':
form = ScheduledActionForm(data=request.POST, firme=firme)
if form.is_valid():
scheduledAction = form.save()
print('formulaire enregistre')
else:
form = ScheduledActionForm(firme=firme)
context = {
'firme': firme,
'form': form,
'nodes': nodes
}
return render(request, "node/planification.html", context)
Something along these lines should get you going. It might still require some tweaking to get it to work in your project. If you still have trouble understanding please read the Django docs and or do their tutorial
Update 2:
Not the prettiest solution but it works for the OP
answered Jan 2 at 10:15
MattMatt
1216
I'm new to Django, can you please explain your solution in detail? Thanks.
– Tessnim
Jan 2 at 10:20
can you show me the view you use to render the form?
– Matt
Jan 2 at 10:30
I updated my post and added my view function.
– Tessnim
Jan 2 at 10:33
I just updated my answer!
– Matt
Jan 2 at 10:57
I tried your code and got this error:NameError: name 'firme' is not defined
– Tessnim
Jan 2 at 11:33
|
show 4 more comments
There are several things wrong with your approach
first of all: you assigned the variable 'firm' to a form field and then using that same variable to get an object from the db won't work in anyway. The variable 'firm' in Node.objects.get(firm_id=firm.id) should be a firm instance.
second: queryset=Node.objects.get(firm_id=firm.id) won't work because Model.objects.get() will return an object not a query set.
If you want to show all the nodes for a specific Firm you will need to pass the firm object (or id or other identifier) to the form by for example passing it through the get_form_kwargs() if you are using CBV and filtering by it Node.objects.filter(firm_id=firm.id)
Update:
Since you are using function based views there might be a more dry way to do this, but I'm only used to working with CBV so I'll try my best
On the form we will declare a new variable called firme (we will pass this to the form in your view)
class ScheduledActionForm(forms.ModelForm):
def __init__(self, *args, **kwargs):
self.firme = kwargs.pop('firme')
super(ScheduledActionForm, self).__init__(*args, **kwargs)
self.fields['node_ids'].queryset = Node.objects.filter(firm_id=self.firme.id)
date = forms.DateTimeField()
firm = forms.ModelChoiceField(queryset=Firme.objects.all()) # why do you want a list of all firms here? Or do you want a single object?
node_ids = forms.ModelMultipleChoiceField(queryset=Node.objects.none()), widget=forms.CheckboxSelectMultiple)
class Meta:
model = ScheduledAction
fields = [
'date',
'firm',
'node_ids'
]
now for you view:
def planification_view(request, id):
firme = get_object_or_404(Firme, id=id)
nodes = Node.objects.all()
if request.method == 'POST':
form = ScheduledActionForm(data=request.POST, firme=firme)
if form.is_valid():
scheduledAction = form.save()
print('formulaire enregistre')
else:
form = ScheduledActionForm(firme=firme)
context = {
'firme': firme,
'form': form,
'nodes': nodes
}
return render(request, "node/planification.html", context)
Something along these lines should get you going. It might still require some tweaking to get it to work in your project. If you still have trouble understanding please read the Django docs and or do their tutorial
Update 2:
Not the prettiest solution but it works for the OP
answered Jan 2 at 10:15
MattMatt
1216
I'm new to Django, can you please explain your solution in detail? Thanks.
– Tessnim
Jan 2 at 10:20
can you show me the view you use to render the form?
– Matt
Jan 2 at 10:30
I updated my post and added my view function.
– Tessnim
Jan 2 at 10:33
I just updated my answer!
– Matt
Jan 2 at 10:57
I tried your code and got this error:NameError: name 'firme' is not defined
– Tessnim
Jan 2 at 11:33
|
show 4 more comments
There are several things wrong with your approach
first of all: you assigned the variable 'firm' to a form field and then using that same variable to get an object from the db won't work in anyway. The variable 'firm' in Node.objects.get(firm_id=firm.id) should be a firm instance.
second: queryset=Node.objects.get(firm_id=firm.id) won't work because Model.objects.get() will return an object not a query set.
If you want to show all the nodes for a specific Firm you will need to pass the firm object (or id or other identifier) to the form by for example passing it through the get_form_kwargs() if you are using CBV and filtering by it Node.objects.filter(firm_id=firm.id)
Update:
Since you are using function based views there might be a more dry way to do this, but I'm only used to working with CBV so I'll try my best
On the form we will declare a new variable called firme (we will pass this to the form in your view)
class ScheduledActionForm(forms.ModelForm):
def __init__(self, *args, **kwargs):
self.firme = kwargs.pop('firme')
super(ScheduledActionForm, self).__init__(*args, **kwargs)
self.fields['node_ids'].queryset = Node.objects.filter(firm_id=self.firme.id)
date = forms.DateTimeField()
firm = forms.ModelChoiceField(queryset=Firme.objects.all()) # why do you want a list of all firms here? Or do you want a single object?
node_ids = forms.ModelMultipleChoiceField(queryset=Node.objects.none()), widget=forms.CheckboxSelectMultiple)
class Meta:
model = ScheduledAction
fields = [
'date',
'firm',
'node_ids'
]
now for you view:
def planification_view(request, id):
firme = get_object_or_404(Firme, id=id)
nodes = Node.objects.all()
if request.method == 'POST':
form = ScheduledActionForm(data=request.POST, firme=firme)
if form.is_valid():
scheduledAction = form.save()
print('formulaire enregistre')
else:
form = ScheduledActionForm(firme=firme)
context = {
'firme': firme,
'form': form,
'nodes': nodes
}
return render(request, "node/planification.html", context)
Something along these lines should get you going. It might still require some tweaking to get it to work in your project. If you still have trouble understanding please read the Django docs and or do their tutorial
Update 2:
Not the prettiest solution but it works for the OP
answered Jan 2 at 10:15
MattMatt
1216
There are several things wrong with your approach
first of all: you assigned the variable 'firm' to a form field and then using that same variable to get an object from the db won't work in anyway. The variable 'firm' in Node.objects.get(firm_id=firm.id) should be a firm instance.
second: queryset=Node.objects.get(firm_id=firm.id) won't work because Model.objects.get() will return an object not a query set.
If you want to show all the nodes for a specific Firm you will need to pass the firm object (or id or other identifier) to the form by for example passing it through the get_form_kwargs() if you are using CBV and filtering by it Node.objects.filter(firm_id=firm.id)
Update:
Since you are using function based views there might be a more dry way to do this, but I'm only used to working with CBV so I'll try my best
On the form we will declare a new variable called firme (we will pass this to the form in your view)
class ScheduledActionForm(forms.ModelForm):
def __init__(self, *args, **kwargs):
self.firme = kwargs.pop('firme')
super(ScheduledActionForm, self).__init__(*args, **kwargs)
self.fields['node_ids'].queryset = Node.objects.filter(firm_id=self.firme.id)
date = forms.DateTimeField()
firm = forms.ModelChoiceField(queryset=Firme.objects.all()) # why do you want a list of all firms here? Or do you want a single object?
node_ids = forms.ModelMultipleChoiceField(queryset=Node.objects.none()), widget=forms.CheckboxSelectMultiple)
class Meta:
model = ScheduledAction
fields = [
'date',
'firm',
'node_ids'
]
now for you view:
def planification_view(request, id):
firme = get_object_or_404(Firme, id=id)
nodes = Node.objects.all()
if request.method == 'POST':
form = ScheduledActionForm(data=request.POST, firme=firme)
if form.is_valid():
scheduledAction = form.save()
print('formulaire enregistre')
else:
form = ScheduledActionForm(firme=firme)
context = {
'firme': firme,
'form': form,
'nodes': nodes
}
return render(request, "node/planification.html", context)
Something along these lines should get you going. It might still require some tweaking to get it to work in your project. If you still have trouble understanding please read the Django docs and or do their tutorial
Update 2:
Not the prettiest solution but it works for the OP
answered Jan 2 at 10:15
MattMatt
1216
edited Jan 2 at 13:55
answered Jan 2 at 10:15
MattMatt
1216
answered Jan 2 at 10:15
MattMatt
1216
answered Jan 2 at 10:15
MattMatt
1216
1216
I'm new to Django, can you please explain your solution in detail? Thanks.
– Tessnim
Jan 2 at 10:20
can you show me the view you use to render the form?
– Matt
Jan 2 at 10:30
I updated my post and added my view function.
– Tessnim
Jan 2 at 10:33
I just updated my answer!
– Matt
Jan 2 at 10:57
I tried your code and got this error:NameError: name 'firme' is not defined
– Tessnim
Jan 2 at 11:33
|
show 4 more comments
I'm new to Django, can you please explain your solution in detail? Thanks.
– Tessnim
Jan 2 at 10:20
can you show me the view you use to render the form?
– Matt
Jan 2 at 10:30
I updated my post and added my view function.
– Tessnim
Jan 2 at 10:33
I just updated my answer!
– Matt
Jan 2 at 10:57
I tried your code and got this error:NameError: name 'firme' is not defined
– Tessnim
Jan 2 at 11:33
I'm new to Django, can you please explain your solution in detail? Thanks.
– Tessnim
Jan 2 at 10:20
I'm new to Django, can you please explain your solution in detail? Thanks.
– Tessnim
Jan 2 at 10:20
can you show me the view you use to render the form?
– Matt
Jan 2 at 10:30
can you show me the view you use to render the form?
– Matt
Jan 2 at 10:30
I updated my post and added my view function.
– Tessnim
Jan 2 at 10:33
I updated my post and added my view function.
– Tessnim
Jan 2 at 10:33
I just updated my answer!
– Matt
Jan 2 at 10:57
I just updated my answer!
– Matt
Jan 2 at 10:57
I tried your code and got this error:
NameError: name 'firme' is not defined– Tessnim
Jan 2 at 11:33
I tried your code and got this error:
NameError: name 'firme' is not defined– Tessnim
Jan 2 at 11:33
|
show 4 more comments
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StackExchange.helpers.onClickDraftSave('#login-link');
});
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StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
