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Questions tagged [django-model-field]

112 questions
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How to pass concatenated functions as a argument in django model method

I am trying to pass timezone.now() + timedelta(days=-2) and timezone.now() as arguments in django model method but am getting def performance(user, timezone.now() + timedelta(days=-2), timezone.now()): …
Thaddeaus Iorbee
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Model form data not showing up in database. Form not saving data

The form I created is not inserting the data into my database table. As far as I can tell I've done everything correctly but it still refuses to save into the database. Instead it "post" in the console and clears the form fields without creating…
Houston Khanyile
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Using integers and strings together in Django choice field

I am trying to use the new Enum types in the latest Django version for the choice field. Specifically I am trying to store the various states of United States as follows: class States(models.TextChoices): ALABAMA = 'AL', 'Alabama' ALASKA =…
Amistad
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How can I upload multiple files in to a Django model?

I'm trying to make an LMS system with Django and now I need to upload multiple pdf files to the curriculum of the class. I can upload one file with the OnetoOne field in the Django model but not more. When I try to add another material for the same…
Sumeth Sathnindu
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Override Field Option on Inherited Model in Django

I've found similar questions and answers, but none seems exactly right. I've got an abstract base model like so: class BaseModel(models.Model): timestamp = models.DateTimeField(auto_now_add=True) modified =…
nicorellius
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Perfom Django Validation for field that is NOT part of form

I would like to raise a ValidationError based on one of the fields in my Django model, without having the respective filed as part of a ModelForm. What I found after googling a bit is the concept of validators for models. So I tried to do the…
Rosi98
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check that the dates are entered correctly in a form

I have a form to create events and I want to check that the dates are correct: end date greater than the start date or dates not before the actual date, etc... I was checking on the internet if there was any check with django for…
carciofinospinoso
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How to filter by field name in model manager (NameError)

models.py class StudentProfile(models.Model): student = models.OneToOneField( User, related_name='student', primary_key=True, parent_link=True, on_delete=models.CASCADE) membership_end = models.DateTimeField( verbose_name="Membership…
Lawrence DeSouza
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Django - Which model field for dir path?

I need to define a field in my Model, which is supposed to host a valid dir path on server-side. Basically just a string which should be: 1) a formally valid unix-like dir path 2) an existing dir path Tried with FilePathField with options…
zeroquaranta
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How to display CHOICES in Django ModelForm

I have a policy_category model with 16 categories. I have a Response model to record survey answers. The model includes a field to record the respondent's 1-5 rating for each of the policy categories. (policy_1_rank..policy_16_rank, etc.) I can't…
jm2288
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Every field in Django modelform shows "Select a valid choice. That choice is not one of the available choices."

I've already read many other threads complaining about this error message but I still can't figure this out. I try removing the fields that give the error, and the error message just moves to another field the next time I try to submit. They are…
jm2288
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ImportError: cannot import name 'get_core_apps' in Django Oscar Module

I am getting error when I am installing Django Oscar Module in my Project, it's giving me this error from oscar import get_core_apps ImportError: cannot import name 'get_core_apps' Here are my settings.py file... from oscar import…
msginfosys
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Django form: reference fields from foreign key

I'm making a task tracker webapp (the full source code is also available) and I have a database structure where each task has a title, a description, and some number of instances, that can each be marked incomplete/incomplete: class…
Solomon Ucko
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How to save a thumbnail to default_storage(AWS S3) after converting it in Django views.py?

I have a an HTML form that allows images upload. I want to save the original image to S3 storage and then convert it to thumbnail and save the thumbnail to the same storage. I could only save the original image but after converting it to thumbnail…
Hossam Mohamed
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Django Abstract Class change behaviour according to actual class

I think following code explains what I'm trying to do from django.db import models class MyBaseClass(models.Model): type = models.IntegerField() class Meta: abstract = True def save(self, *args, **kwargs): self.type =…
EralpB
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