"之后如何将 django-form 创建的条目的主键传递给下一页的表单"

Question

我的Models.py<\/code>包含 2 个模型，每个Project<\/code>可以有多个Role<\/code> （即一对多关系）：

class Project(models.Model):
    title = models.CharField(max_length=2000)
    state_of_project = models.CharField(max_length=10, default='ongoing')
    introduction = models.TextField(blank=True)

class Role(models.Model):
    role_name =  models.CharField(max_length=30)
    project = models.ForeignKey(Project, on_delete=models.SET_NULL, null = True)
    
    def __str__(self):
        return self.role_name 

Answer 1

您必须将主键传递给 urls.py 并通过 views.py 获取

例如 ：

#urls.py
path("add-role/<int:project_id>" ,views.add_role , name="add.role"),


------------

#views.py
def add_role(request , project_id):
        project = Project.objects.get(id=project_id)
        if request.method == "POST":
            form = ProjectForm(request.POST)
            if form.is_valid():
                f = form.save(commit=False)
                f.project = project
                f.save()
                return redirect("projects")
            else:
                return render(request , 'add-project.html' ,{"form":form})
        return render(request , 'add-project.html' ,  {"project":project})