Реверс для "URL" с аргументами "(id)" не найден. Попробован 1 шаблон (ов): 'URL <int: ID>'

Question

Я стою с этой ошибкой, я не могу получить "id" из моего списка, я получаю ошибку. я пытаюсь создать кнопку ОБНОВИТЬ для редактирования данных, которые я добавляю в свою базу данных.

Вот мои views.py в моих приложениях

    from django.shortcuts import render, redirect
    from gomo_web_system.forms import UserForm,NewMasterForm

    from django.contrib.auth import authenticate, login, logout
    from django.http import HttpResponseRedirect, HttpResponse
    from django.urls import reverse
    from django.contrib.auth.decorators import login_required
    from gomo_web_system.models import masterList

    from django.contrib import messages


def index(request):

    if request.method == 'POST':
        username = request.POST.get('username')
        password = request.POST.get('password')

        user = authenticate(username=username, password=password)


        if user is not None:
            login(request, user)
            return render(request, 'gomo_web_system/main_menu.html')
        else:
            messages.info(request, 'Username or Password is incorrect')

    context = {}
    return render(request, 'gomo_web_system/index.html', context)

def user_logout(request):
    logout(request)
    return HttpResponseRedirect(reverse('index'))

@login_required
def main_menu(request):
    return render(request, 'gomo_web_system/main_menu.html')

@login_required
def it_home(request):
    return render(request, 'gomo_web_system/IT/it_home.html')

@login_required
def it_master_list(request):
    master_list = masterList.objects.order_by('projectName')
    master_dict = {'master':master_list}
    return render(request, 'gomo_web_system/IT/it_master_list.html', context=master_dict)

@login_required
def it_create_master_list(request):

    form = NewMasterForm()

    if request.method == 'POST':
        #print('printring POST:', request.POST)
        form = NewMasterForm(request.POST)

        if form.is_valid():
            form.save()
            return redirect('gomotion:master_list')

    context = {'form':form}
    return render(request, 'gomo_web_system/IT/it_add_master_list.html', context)

def it_update_master_list(request, id):
    form = NewMasterForm()

    context = {'form':form}
    return render(request, 'gomo_web_system/IT/it_add_master_list.html', context)

Вот мои в моих приложениях myapp / urls .py

from django.conf.urls import url
from gomo_web_system import views

app_name = 'gomotion'

urlpatterns = [
    url('main/',views.main_menu, name="main"),
    url('itHome/',views.it_home, name="home"),
    url('itMasterList/', views.it_master_list, name="master_list"),
    url('itAddMasterList/',views.it_create_master_list, name="add_master_list"),
    url('itUpdateMasterList/<int:id>/',views.it_update_master_list, name="update_master_list"),
]

Вот мои в моих приложениях urls.py

from django.contrib import admin
from django.urls import path, include
from gomo_web_system import views

urlpatterns = [
    path('', views.index, name='index'),
    path('logout/', views.user_logout, name='logout'),
    path('gomoadmin/', admin.site.urls),
    path('gomotion/', include('gomo_web_system.urls')),

]

этот файл получает ошибку .id в "master_list.id" жирный текст

{% extends 'gomo_web_system/IT/it_base.html' %}
{% load static %}

{% block it_base %}

<!-- Card section -->
<!-- Title row -->
<div class="col-md-9 col-lg-10 py-5">
    <div class="row mb-5">
      <div class="col text-center">
        <h3><span class="text-uppercase text-danger ">MASTER LIST</span></h3>
      </div>
    </div>
    <a href="{% url 'gomotion:add_master_list' %}" class="btn btn-danger btn-block text-uppercase mb-2">Add Project</a>
    <table id="master_list_table" class="table table-hover table-bordered">
      <!-- table Head -->
      <thead class="thead-dark">
        <tr>
          <th scope="col" class-"text-muted">MASTER</th>
          <th scope="col" class-"text-muted">PROJECTS</th>
          <th scope="col" class-"text-muted">YEAR</th>
          <th scope="col" class-"text-muted">SERIAL</th>
          <th scope="col" class-"text-muted">FORMAT</th>
          <th scope="col" class-"text-muted">SPACE</th>
          <th scope="col" class-"text-muted">BYTES</th>
          <th scope="col" class-"text-muted">ACTIONS</th>
          </tr>
      </thead>
          <!-- table body -->

      <tbody>
          {% for master_list in master %}
        <tr>
          <td class="text-uppercase">{{ master_list.masterName }}</td>
          <td class="text-uppercase"><a href="#">{{ master_list.projectName }}</a></td>
          <td class="text-uppercase">{{ master_list.year }}</td>
          <td class="text-uppercase">{{ master_list.serialNumber }}</td>
          <td class="text-uppercase">{{ master_list.hdFormat }}</td>
          <td class="text-uppercase">{{ master_list.space }}</td>
          <td class="text-uppercase">{{ master_list.hdBytes }}</td>
          **<td><a class="btn btn-sm btn-info" href="{% url 'gomotion:update_master_list' master_list.id %}">update</a></td>**
        </tr>
          {% endfor %}
      </tbody>

    </table>


<!-- End of colum -->
</div>
<!-- end of table -->


{% endblock %}

Вот ошибка, которую я получил.

Answer 1

Вы должны передать экземпляр, который необходимо обновить, представлению.

def it_update_master_list(request, id):
    instance = get_object_or_404(masterList, id=id)
    form = NewMasterForm(request.POST or None, request.FILES or None, instance=instance)
    if form.is_valid():
        instance = form.save(commit=False)
        instance.save()
        return redirect('/')
        context = {'form':form, "instance": instance,}
        return render(request, 'your_form.html', context)