How to pass a variable from views to base.html in Django?

Question

I want to show the user's first name on the navbar of my project. This navbar is on the base.html file.

In my views.py I have created a variable that does this

def base(request):
    user = request.user
    u = User.objects.get(username=user)
    us = u.clients.first_name
    context = {'u': u, 'us': us}
    return render(request, "backend/base.html", context)

I can get it to work on any other .html file, but not on the base.html, that looks like this

<span class="mb-0 text-sm  font-weight-bold">{{us}}</span>

This is my model

class Clients(models.Model):
    user = models.OneToOneField(User, on_delete=models.CASCADE)
    first_name = models.CharField(max_length=30, verbose_name="Primeiro Nome")
    last_name = models.CharField(max_length=30, verbose_name="Apelido")
    address = models.CharField(max_length=200, verbose_name="Morada")
    nif = models.CharField(max_length=9, verbose_name="NIF", validators=[RegexValidator(r'^\d{1,10}$')], primary_key=True)
    mobile = models.CharField(max_length=9, verbose_name="Telemóvel", validators=[RegexValidator(r'^\d{1,10}$')])
    email = models.CharField(max_length=200, null=True, verbose_name="Email")

    def __str__(self):
        return "%s %s" % (self.first_name, self.last_name)

    class Meta:
        verbose_name_plural = "Clientes"

What is the error message or does it just not render anything? — Kent Shikama
– Kent Shikama, Commented Feb 17, 2020 at 23:28
@KentShikama It doesn't render anything. If I use {{user}} it will render the username, but if I use {{us}} (after the variable defined on the views.py) it renders nothing. — overclock
– overclock, Commented Feb 17, 2020 at 23:30
Are you sure you have related Client object ( with same user) for user you are trying to list in database — iklinac
– iklinac, Commented Feb 17, 2020 at 23:57

overclock · Accepted Answer · 2020-02-18 00:50:18Z

1

I am answering my own question.

I was able to solve this by creating a context_processor.py with the following code

from .models import Clients, Hotels, Trip, Flight
from django.contrib.auth.models import User

def add_variable_to_context(request):  
    user = request.user
    u = User.objects.get(username=user)
    us = u.clients.first_name
    uv = u.clients.avatar
    return {
        'u': u,
        'us': us,
        'uv': uv
    }

answered Feb 18, 2020 at 0:50

overclock

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4 Comments

Steven Over a year ago

Was typing my answer but there you go, also don't forget to add 'appname.context_processors.add_variable_to_context', in Templates (context_processors)

Steven Over a year ago

Great! Might as well mark your own answer as the answer to your question so this question will be closed

overclock Over a year ago

@Steven I tried, but it will only let me do it in 2 days.

Steven Over a year ago

Well no worries, as long as you've solved your question haha

Saisiva A · Accepted Answer · 2020-02-18 02:25:54Z

0

In views.py try to use render_to_string function. And dont forget to configure the static files settings in configuration file.

from django.template.loader import render_to_string

context = {'u': u, 'us': us}
render_to_string('html_name.html', context)

answered Feb 18, 2020 at 2:25

Saisiva A

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