How to implement a form to update the quantity?

[enemybass]

Hi. How to implement a form to update the quantity Car? I have no idea how to do it. Thanks

Code: http://dpaste.com/808558/

or here:

    class Car(models.Model):
        name = models.CharField(max_length=50)
        price = models.DecimalField()   
   
    class GarageCar(models.Model):
        car = models.ForeignKey('Car')
        garage = models.ForeignKey('Garage')
        quantity = models.IntegerField()
   
    class Garage(models.Model):
        name = models.CharField("Garage_Name", max_length=30)
        cars = models.ManyToManyField('Car', through='GarageCar', blank=True, null=True)
        owner = models.ForeignKey(User, related_name='owner_garage', verbose_name='Owner Garage')

In this way updates the quantity:

    In [2]: c = Car.objects.get(id=1) #here I need car ID
   
    In [3]: g = Garage.objects.get(owner=1)
   
    In [4]: q = 33 #here I need data from form
   
    In [5]: c= GarageCar.objects.filter(car=c, garage=g).update(quantity=q)



views:

    def show(request):
        user = request.user
        garage = Garage.objects.get(owner=user)
       
        return render_to_response('garage.html', {'garage': garage, 'form':form})
   
   
in garage.html:
   
    {% for item in garage.garagecar_set.all %}
            Car:      {{item.car.name}}
            Price:    {{item.car.price}}
            Quantity: {{item.quantity}}
            ID:       {{item.car.id}}
    {% endfor %}


in forms.py:

    from django import forms
   
    class QuantityForm(forms.Form):
        q = forms.IntegerField

How to create ORM query to update quantity?

How to display a form field next to each car in template (with button "Update")?

[Anton Baklanov]

Hi!

You can use something like:

{% for item in garage.garagecar_set.all %}

            Car:      {{item.car.name}}
            Price:    {{item.car.price}} 
            Quantity: {{item.quantity}} 
            ID:       {{item.car.id

}}

            <form action="../update_q/{{item.pk}}/" method="post"/>
              {{form.q}}
              <input type="submit" value="update"/>

            </form>
 {% endfor %}

and view like

def update_q(request, garagecar_id):

    # get garagecar by id here, create form from request, set new value, save()


it to submit forms with ajax, to not reload entire page every time.


P.S.

it looks you are implementing Many-to-Many-Through relation. Django has support for it out of the box

https://docs.djangoproject.com/en/dev/topics/db/models/#extra-fields-on-many-to-many-relationships

--

Regards,

Anton Baklanov

[Anton Baklanov]

it is good idea to submit...

missed some words, lol

On Mon, Oct 1, 2012 at 9:52 PM, Anton Baklanov <antonb...@gmail.com> wrote:

it to submit forms with ajax, to not reload entire page every time.

--

Regards,

Anton Baklanov

[Domi nika]

Thanks. Is it possible to display multiple form in loop?

2012/10/1 Anton Baklanov <antonb...@gmail.com>

--

Regards,

Anton Baklanov

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