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Okay, so I'm trying to make a random number generator webpage using Django/Python. What I need to accomplish to do that is somehow use python code in my HTML template file, except I can't find out how to do that.
<h1 style="font-size:50px;line-height:20px;color:rgb(145,0,0);font- family: Arial Black, Gadget, sans-serif"></h1>
<h2 style="line-height:10px;color:rgb(140,140,140)"></h2>
<h3 style="font-size:40px;line-height:10px;font-family: Arial Black, Gadget, sans-serif"></h3>
<body style="background-color:rgb(255,239,154)"></body>
<!--Style placeholders-->
<h1 style="text-align:center;position:relative;top:20px">
Test Site
</h1>
<!--Reroll icon-->
<h1 style="text-align:center;position:relative;top:20px">
<input type='image' style='width:60px;height:56px;' src='../../static/polls/dice.png' alt='Re-roll'
onclick='location.reload();' value='Roll' /></h1>
670
Use django-mathfilters. In addition to the built-in add filter, it provides filters to subtract, multiply, divide, and take the absolute value. For the specific example above, you would use {{ 100|sub:object.
To generate random number in Python, randint() function is used. This function is defined in random module.
Use a random.randint() function to get a random integer number from the inclusive range. For example, random.randint(0, 10) will return a random number from [0, 1, 2, 3, 4, 5, 6, 7, 8 ,9, 10].
There is no built-in way to do this. If all you need is a random value, once, and you don't want to pass that from a view function - I guess a custom template tag is the way.
In any appropriate application, create a file templatetags/random_numbers.py (and an empty templatetags/__init__.py if you don't have any other custom template tags) with the following contents:
import random
from django import template
register = template.Library()
@register.simple_tag
def random_int(a, b=None):
if b is None:
a, b = 0, a
return random.randint(a, b)
Then, in your template use it like this:
{% load random_numbers %}
<p>A random value, 1 ≤ {% random_int 1 10 %} ≤ 10.</p>
More documentation on custom tags: https://docs.djangoproject.com/en/1.11/howto/custom-template-tags/
151
For now (Django 3) you can do something like this, doc
view.py
list_for_random = range(100)
return render(...{'list_for_random': list_for_random,})
Then, in template just
{{ list_for_random | random }}
If for some reason you don't want to create a custom tag or pass the value from the view function, you can try this:
in your template:
{{ request.user.your_model.your_randint }}
in any model.py file of your application:
from django.db import models
from django.contrib.auth.models import User
from django.db.models.signals import post_save
from django.dispatch import receiver
from random import randint
class Your_model(models.Model):
user = models.OneToOneField(User,
on_delete=models.CASCADE,
primary_key=True)
@staticmethod
def your_randint():
return str(randint(0, 2048))
@receiver(post_save, sender=User)
def create_latest_inputs(sender, instance, created, **kwargs):
if created:
Your_model.objects.create(user=instance)
The last method is required to automatically create Your_model every time a User model is created.
By the way, you don't have to create one-to-one field with user, you can add this static method to any model, which was sent to a page.
P.S. You may need to run migrations
31
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