Delete all task related to User - python-3.x

Question

I am creating a todo app. I want to delete all task related to a particular user from Tasklist table after login but i got an error ' deleteAll() missing 1 required positional argument: 'id' ". How can i delete all task. Thanks in advance.
Model.py
from django.contrib.auth.models import User
from django.db import models
class TaskList(models.Model):
user = models.ForeignKey(User, on_delete=models.CASCADE)
task = models.CharField(max_length=100, null=False, blank=False)
complete = models.BooleanField(default=False)
taskCreate = models.DateTimeField(auto_now=True)
Views.py
def deleteAll(request, id):
TaskList.objects.filter(id=request.user.tasklist_set.filter(id)).delete()
return redirect('todolist')
Html
{% extends 'home.html' %}
{% block content %}
{%if user.is_authenticated%}
<h2>Welcome {{ user.get_username| title }}</h2>
<button type="submit">Logout</button>
<form method="post">
{% csrf_token %}
<label for="task">
<input name="task" placeholder="add today's task" id="task" required>
<button type="submit">add</button>
</label>
</form>
<form method="get" >
{% csrf_token %}
<div>
{% for todo in task %}
{% if todo.complete %}
<li class="list-group-item todo-completed"><h6>{{ todo.task|linebreaks}} </h6></li>
{% else %}
<h6 class="list">{{ todo.task|linebreaks}}</h6>
{% endif %}
{% endfor %}
<button> Delete All </button>
<button> Delete Completed </button>
</div>
</form>
{% endif %}
{% endblock %}

Answer 1

First Change in your template Delete All button. Because your view requires a user id.
<button type="button"> Delete All </button>
Then simplify the deleteAll functions db query. You need to filter all tasks of current user. so you can just use user__id__exact = id:
def deleteAll(request, id):
TaskList.objects.filter(user__id__exact = id).delete()
return redirect('todolist')
Alternative Solution:
You don't need to send id. because you can get the current user id in request argument.
You just need to change the filter:
# view
#login_required
def deleteAll(request):
TaskList.objects.filter(user = request.user).delete()
return redirect('todolist')
# In template use:
<button type="button"> Delete All </button>
# urlpattern
path('delete/', deleteAll, name='delete')
I hope this will help you. Thank you. Happy Coding :)

Answer 2

This is a very common mistake that people do. :)
You have defined a function which takes request and an argument named as id as shown here:
def deleteAll(request, id):
TaskList.objects.filter(id=request.user.tasklist_set.filter(id)).delete()
return redirect('todolist')
But you have to pass an argument into deleteAll. To do that you have to type in the argument value.
You can do so by entering the value after {% url 'delete' %} in the line
Delete All
For example:
Delete All
I hope this helped, if not, feel free to comment and clarify the query.

Answer 3

I suppose "id" refers to the user's id, that is request.user.pk.
There are two issues, or two solutions:
About the Error
You have specified that your view expects the argument id, therefore you would need to add it to the URL in the template.
def deleteAll(request, id): # <<<< "id" is specified as argument
Delete All <!-- no "id" is specified -->
If you have an argument in a view, you need to specify it in the urls.py (which you obviously did) and subsequently whereever you need it reversed:
Delete All
You need the request template processor to have the request in your template context.
However, you actually don't need the ID because you know it in the view already. This is the "other solution".
About the ID
def deleteAll(request, id):
TaskList.objects.filter(id=request.user.tasklist_set.filter(id)).delete()
return redirect('todolist')
can be rewritten to
from django.contrib.auth.decorators import login_required
#login_required
def deleteAll(request):
TaskList.objects.filter(id=request.user.pk).delete()
return redirect('todolist')
You need to remove the id argument in the url in your urls.py, as well.