python - Django Dynamic Form depending on database values

Question

I'm pretty new to Django, and i'm struggling a bit (since 2 days) to make dynamic form depending on database.

Here is my model :

from django.db import models


class DataElement(models.Model):
    name = models.CharField(max_length=150)

    def __str__(self):
        return self.name


class PathElement(models.Model):
    name = models.CharField(max_length=150)
    path = models.TextField()
    data_element = models.ManyToManyField(DataElement)

    def __str__(self):
        return self.name


class Category(models.Model):
    name = models.CharField(max_length=150)
    path = models.TextField()
    path_element = models.ManyToManyField(PathElement)

    def __str__(self):
        return self.name

I have a dropdown with Categories, and, when the user select the category, i want the form to have one dropdown per pathelement listing all the dataelement.

Thx in advance

Answer 1

等待大神答复