How to Correctly Display ManyToMany ID Matching List in Django?

WayBehind Published at Dev

WayBehind

How to correctly display ManyToMany ID matching list?

My report list (weekly, monthly etc):

Car Number 1:
-customer (date, name etc) 
-customer (date, name etc)

Car Number 2:    
-customer (date, name etc) 
-customer (date, name etc)

My Models:

class Car(models.Model):
    name ...

class Reservation(model.Models):
    cars = models.ManyToManyField('Car', related_name="reservation")
    customerinfo = ...

As each customer can reserve multiple cars, I have to use M2M field.

Now displaying the list :

{% for car in cars %}
<h1>{{ car.name }}</h1>
    {% for reservation in reservations %}
        {% for reservationcar in reservation.cars.all %}
            {% if reservationcar.id = car.id %}
                <h2>{{ reservation.cusotmerinfo }}</h2>
            {% endif %}
        {% endfor %}
    {% endfor %}
{% endfor %}

Now, the above works, but doesnt look right and looks quite dirty.

Is there a better, cleaner, shorter way to accomplish that?

EsseTi

The M-M is "wrong" you can user this It will looks like something like this (not tested)

class User(models.Model):
    .. any data you need ..

class Car(models.Model):
    .. any data you need ..
    reservations = models.ManyToManyField(User, through='Reservations')


class Reservations(models.Model):
    car = models.ForeignKey(Car)
    user = models.ForeignKey(User)
    .. any data you need ..

You can probably place the reservations in the user and change the ref.

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