i try to order properties in the admin but it does not work
model
class Physic(models.Model):
name = models.ForeignKey(Property, verbose_name=_('name'), null=True, blank=True,)
lapropriete = models.CharField(_('property'), max_length=100)....
class Essai_Temperature(models.Model):
name = models.ForeignKey(Material,
nature_unit = models.ForeignKey(Property,
choix = ChainedForeignKey(Physic, verbose_name=_('properties'), null....
form
class Essai_TemperatureForm(forms.ModelForm):
class Meta:
model = Essai_Temperature
def __init__(self, *args, **kwargs):
super(Essai_TemperatureForm, self).__init__(*args, **kwargs)
self.fields['choix'].queryset = Physic.objects.order_by('-lapropriete')
admin
class Essai_TemperatureInline(admin.TabularInline):
model = Essai_Temperature
form = Essai_TemperatureForm
extra = 5
what is the problem here ?
maybe choix ?
I have dropdown list ('Hardness Vickers (GPa)', Shear Modulus (MPa)'......
Why not just use the ordering attribute of the ModelAdmin (which will also work on the TabularInline - it previously didn't work but has been fixed)
class Essai_TemperatureInline(admin.TabularInline):
model = Essai_Temperature
form = Essai_TemperatureForm
ordering = ('-choix__lapropriete',)
extra = 5
Related
I am trying to find out an efficient way to set a field value within form init method. My models are similar to below
class Users(models.Model):
firstname = models.CharField()
lastname = models.CharField()
class profile(models.model):
user = models.ForeignKey(Users, on_delete=models.PROTECT)
class logindetails(models.model):
user = models.ForeignKey(Users, on_delete=models.PROTECT)
profile = models.ForeignKey(profile, on_delete=models.PROTECT)
login_time = models.DateField(auto_now=True)
My form is like as below:
class LoginForm(forms.ModelForm):
class Meta:
model = logindetails
fields = [__all__]
def __init__(self, *args, **kwargs):
self._rowid = kwargs.pop('rowid', None)
super(LoginForm, self).__init__(*args, **kwargs)
instance = profile.objects.get(id=self._rowid)
self.fields['user'] = instance.user <--- Facing difficulties here
Any help will be appreciated.
Django had built-in ways of setting initial form values, the documentation is available here: https://docs.djangoproject.com/en/3.0/ref/forms/api/#dynamic-initial-values
My goal is to loop through all form fields and to assign certain classes to them like this:
class ContactForm(forms.Form):
def __init__(self, *args, **kwargs):
super(ContactForm, self).__init__(*args, **kwargs)
for field_name, field in self.fields.items():
field.widget.attrs['class'] = 'form-control input-sm plain'
if field.required == True:
field.widget.attrs['required'] = ''
class Meta:
model = Contact
fields = '__all__'
The issue with this code is that self.fields.items() seems to be empty (and as a result I never get into the for-loop).
My guess is that the issue arose either because of my upgrade from Django 1.9 and python 2 to Django 1.10 and python 3, or because of custom manager present in the definition of the underlying model.
Could anyone share expertise on this?
class Contact(BaseMixin, DeleteMixin):
provider_account = models.ForeignKey(ProviderAccount, models.DO_NOTHING)
client_id = models.IntegerField()
name = models.CharField(max_length=300)
profile_photo_url = models.CharField(max_length=100, default = 'no_image.jpg')
event_type_id = models.IntegerField(EventType.choices(), blank=True, null=True)
is_satisfied = models.NullBooleanField()
objects = CustomQuerySetManager()
class Meta:
managed = False
db_table = 'contact'
class QuerySet(QuerySet):
#....
Your form is a standard form, not a model form; the Meta class is ignored and the only fields are those you define yourself.
Your form should inherit from forms.ModelForm for this to work.
I have a model where a field references a foreign key from another model as:
class DummyModel(models.Model):
name = models.CharField(max_length=100)
description = models.CharField(max_length=150)
image_type = models.ForeignKey(ImageTypeModel) # Foreign key
class Meta:
db_table = "dummy"
The parent model is also simple:
class ImageTypeModel(models.Model):
name = models.CharField(max_length=100)
dims = models.IntegerField()
class Meta:
db_table = "imagetypes"
Now, I attempt to render a record in a form and for that purpose I am using django-crispy-forms. So, I have:
class DummyForm(ModelForm):
class Meta:
model = DummyModel
fields = ['name', 'description', 'image_type']
def __init__(self, *args, **kwargs):
super(DummyForm, self).__init__(*args, **kwargs)
self.helper = FormHelper(self)
self.helper.form_class = 'form-horizontal'
self.helper.label_class = 'col-sm-2'
self.helper.field_class = 'col-sm-10'
#self.helper.form_tag = False
self.helper.layout = Layout(
Field('name'),
Field('description'),
Field('image_type'))
The image_type field renders as a drop-down list which is perfect but instead of the name of the image types, the entries are all labelled ImageTypeModel. Is there a mechanism so that I can display the corresponding name from the ImageTypeModel record but when the form is saved it saves the primary key rather than the name.
You should implement the __unicode__ (python 2) or __str__ (python 3) method inside the model.
Like this:
class ImageTypeModel(models.Model):
name = models.CharField(max_length=100)
dims = models.IntegerField()
class Meta:
db_table = "imagetypes"
# For Python 2
def __unicode__(self):
return self.name
# For Python 3
def __str__(self):
return self.name
Is there a way to only customize the label of form fields without specifying the field type?
For example, I have the following model for a user's privileges on handling documents:
class Privilege(models.Model):
user = models.OneToOneField(User)
privCreate = models.BooleanField(default=False)
privEdit = models.BooleanField(default=False)
privDelete = models.BooleanField(default=False)
...
And I have the following form:
class PrivilegeForm(forms.ModelForm):
privCreate = forms.BooleanField(label='Create a document')
privEdit = forms.BooleanField(label='Edit a document')
privDelete = forms.BooleanField(label='Delete a document')
...
class Meta:
model = Privilege
fields = ('privCreate', 'privEdit', 'privDelete', ...)
There are a lot of fields, and this seems to violate DRY. How can I only customize the labels without specifying forms.BooleanField if they are the same as those in the models?
You can set the labels in the __init__() using .fields:
class PrivilegeForm(forms.ModelForm):
def __init__(self, *args, **kwargs):
super(PrivilegeForm, self).__init__(*args, **kwargs)
self.fields['privCreate'].label = 'Create a document'
...
I am trying to create a pretty complicated form and break it up using formwizard. The first thing I am trying to do is get the ManyToManyField using through to display, Then I need to figure out how to make it all save.
#models.py
----------------------
class Meat(models.Model):
name = models.charField(max_length=200)
company = models.CharField(max_length = 200)
class Starch(models.Model):
name = models.CharField(max_length=200)
company = models.CharField(max_length=200)
class Recipe(models.Model):
name = models.CharField(max_length=200)
description = models.TextField(help_text='Please describe the finished dish')
meat = models.ManyToManyField('Meat' through='RecipeMeat')
meat_notes = models.TextField()
starch = models.ManyToManyField('Starch' through='RecipeStarch')
starch_notes = models.TextField()
class RecipeMeat(models.Model):
recipe = models.ForeignKey(Recipe)
meat = models.ForeignKey(Meat)
qty = models.FloatField()
class RecipeStarch
recipe = models.ForeignKey(Recipe)
starch = models.ForeignKey(Starch)
qty = models.FloatField()
.
#forms.py
-------------------
class RecipeForm(forms.ModelForm):
class Meta:
model = Recipe
fields = ('name', 'description')
class RecipeMeatForm(forms.ModelForm):
class Meta:
model = RecipeMeat
class RecipeMeatNotesForm(forms.ModelForm):
class Meta:
model = Recipe
fields = ('meat_notes',)
class RecipeStarch(forms.ModelForm):
class Meta:
model = RecipeStarch
class RecipeStarchNotesForm(forms.ModelForm):
class Meta:
model = Recipe
fields = ('starch_notes')
MeatFormSet = inlineformset_factory(Recipe, RecipeMeat, form=RecipeMeatForm, extra=1)
.
#views.py
---------------------------
class CreateRecipeWizard(SessionWizardView):
template_name = "create-recipe.html"
instance = None
file_storage = FileSystemStorage(location= 'images')
def dispatch(self, request, *args, **kwargs):
self.instance = Recipe()
return super(CreateRecipeWizard, self).dispatch(request, *args, **kwargs)
def get_form_instance( self, step ):
return self.instance
def done( self, form_list, **kwargs ):
self.instance.save()
return HttpResponseRedirect(reverse(all-recipes))
.
#urls.py
------------------------------
url(r'^create-recipe/$', views.CreateRecipeWizard.as_view([RecipeForm, MeatFormSet, RecipeMeatNotesForm, RecipeStarchNotesForm]), name='create-recipe'),
.
I am a bit of a rookie with this django stuff. The Recipe part is much longer and more complicated but pretty much the same pattern. If any one could help point me in the right on how to get my ManyToManyField using through part figured out or pointed in the right direction it would be greatly appreciated.
To save the ManyToMany relationship on a formwizard process you can do something like this;
def done(self, form_list, **kwargs):
form_data_dict = self.get_all_cleaned_data()
m2mfield = form_data_dict.pop('m2mfield')
instance = form_list[0].save()
for something in m2mfield:
instance.m2mfield.add(something)
return render_to_response(
'done.html', {},
context_instance=RequestContext(self.request)
)
In this example the first form in the list is a ModelForm for the thing I'm trying to create and it has a ManyToManyField to another model for which I have a form second in the process. So I grab that first form & save it, then grab the field from the cleaned data from the second form and save the selected options to the M2M field.