将逗号分隔的字符串转换为列表，然后在Django模板中显示列表

Question

I'm trying to take an input that is a comma separated string value, store those items in a list for temporary display and use in a template. I'm currently having trouble storing each comma separated string value in a list, then displaying that list in a template.

A user inputs something similar into a database ModelForm field (without the quotes):

example input from a ModelForm

inputs = models.CharField(max_length=200)

Then the user would input something to the effect of

"length_ft,depth_in,width_in"

minus the quotes.

The following then sort-of works in the template:

{% for i in inputs_list %}
    {{ i }}
{% endfor %}

Instead of displaying a list of list items, it simply lists each letter of each list item separately. I realize why, because I am stripping out commas, but then I'm trying to append the blank list with each csv item.

I don't understand how to get items out of the input string to a list, then to display in the template.

views.py

def test_formula(request, formula_id):
    formula = Formula.objects.get(id=formula_id)
    inputs_list = []
    for inputs in formula.inputs:
        strip = inputs.strip(",")
        inputs_list.append(strip)

    context = {'formula': formula, 'inputs_list': inputs_list}
    return render(request, 'formulas/test_formula.html', context)

formulas/test_formula.html

(this just breaks up each character into it's own item)

{% load static %}
{% block content %}

{% for i in inputs_list %}
{{ i }}
{% endfor %}


{% endblock content %}

formulas\\urls.py

from django.urls import path
from . import views

urlpatterns = [
    path('test_formula/<int:formula_id>', views.test_formula, name='test_formula'),
]

Answer 1

Assuming you have a string of comma separated values such as "length_ft,depth_in,width_in" , update your code to:

def test_formula(request, formula_id):
    formula = Formula.objects.get(id=formula_id)

    context = {'formula': formula, 'inputs_list': formula.inputs.split(",")}
    return render(request, 'formulas/test_formula.html', context)

Basically, you need to us the str method split which returns a list of the words in the string, using the parameter that you pass as the delimiter string.

I would also suggest changing the variable i to input in the for in the template.