Forms in Django

Question

I have two models, a studen and an agent. because student model has some choice field, I'm using ModelForm for Form and that's great. Every Student has an agent:

class Student(models.Model):
    ncode = models.CharField(max_length=12)
    name = models.CharField(max_length=40)
    family = models.CharField(max_length=60)
    father = models.CharField(max_length=40)
    telephone = models.CharField(max_length=18, blank=True)
    address = models.CharField(max_length=256)
    reagent = models.ForeignKey(Reagent)
    state = models.IntegerField(choices=STUDYING_STATUS)
    degree = models.IntegerField(choices=DEGREE_STATUS)

class Reagent(models.Model):
    name = models.CharField(max_length=40)
    family = models.CharField(max_length=60)
    telephone = models.CharField(max_length=18)

These are forms:

class Student_Form(ModelForm):
    class Meta:
        model = Student

class Reagent_Form(ModelForm):
    class Meta:
        model = Reagent

But I planed to get both agent and student in one form so, I put them together in one form in template:

<form action="" method="POST"> {% csrf_token %}
    <table>
        {{ student_form.as_table}}
        {{ reagent_form.as_table }}
    </table>
    <input type="submit" value="Add">
</form>

My problem is how can I get entered informations in separate instances of student and agent forms? if in template was just one forms info I would used f = StudentForm(request.POST)! But the forms are mixed in this case

Answer 1

You can still do

f = Student_Form(request.POST)
r = Reagent_Form(request.POST)

and django will assign the appropriate fields.

To hide the FK field,

class Student_Form(ModelForm):
    class Meta:
        model = Student
        exclude = ('reagent', )

class Reagent_Form(ModelForm):
    class Meta:
        model = Reagent

While saving in the view,

def myview(request):
    reagent_form = Reagent_Form(prefix='reagent')
    student_form = Student_Form(prefix='student')
    if request.POST:            
         reagent_form = Reagent_Form(request.POST, prefix='reagent')
         student_form = Student_Form(request.POST, prefix='student')
         if reagent_form.is_valid() and student_form.is_valid():
             reagent = reagent_form.save() #first create the object
             student = student_form.save(commit=False) 
             student.reagent = reagent #then assign to student. 
             student.save()

         #rest of the code.