how-to-fix-the-field-error-issue-in-django

[gomathi subramanian]

Hi Django people,

Kindly help me to resolve this issue.

https://stackoverflow.com/questions/51336451/how-to-fix-the-field-error-issue-in-django

Thanks,

Gomathi Subramanian

[gomathi subramanian]

Hi all,

I try to navigate from list page to detail page, when i tried with the below code. I got error stating that field error. For that I've tried with adding a empty Slug field in models, it shows an page not found error.

 #urls.py
 from django.urls import path

 from .views import (TaskListView,TaskDetailView)


 app_name = 'Tasks'


 urlpatterns = [

     path('', TaskListView.as_view(), name='list'),
     path('<slug:slug>/', TaskDetailView.as_view(), name='detail'),
  ] 



 #views.py
 from django.shortcuts import render
 from django.http import HttpResponse
 # Create your views here.
 from django.views.generic import ListView, DetailView, View

 from .models import Taskmanager


 def home(request):
   return render(request, 'home.html')


 class TaskListView(ListView):
  template_name = 'Tasks.html'
  model = Taskmanager
  context_object_name = 'data'


 class TaskDetailView(DetailView):
   template_name = 'detail.html'
   model = Taskmanager
   context_object_name = 'data'


 #models.py
 from django.db import models
 from django.urls import reverse

 # Create your models here.
 week_number = (("week01", "week01"),
           ("week02", "week02"),
           ("week03", "week03"),
           ("week04", "week04"),
           ("week05", "week05"),
           ("week06", "week06"),
           ("week07", "week07"),
           ("week08", "week08"),
           ("week09", "week09"),
           ("week10", "week10"),
           ("week11", "week11"),
           ("week12", "week12"),
           ("week13", "week13"),
           ("week14", "week14"),
           ("week15", "week15"),
           ("week16", "week16"),
           ("week17", "week17"),
           ("week18", "week18"),
           ("week19", "week19"),
           ("week20", "week20"),
           ("week21", "week21"),
           ("week22", "week22"),
           ("week23", "week23"),
           ("week24", "week24"),
           ("week25", "week25"),
           ("week26", "week26"),
           ("week27", "week27"),
           ("week28", "week28"),
           ("week29", "week29"),
           ("week30", "week30"),
           ("week31", "week31"),
           ("week32", "week32"),
           ("week33", "week33"),
           ("week34", "week34"),
           ("week35", "week35"),
           ("week36", "week36"),
           ("week37", "week37"),
           ("week38", "week38"),
           ("week39", "week39"),
           ("week40", "week40"),
           ("week41", "week41"),
           ("week42", "week42"),
           ("week43", "week43"),
           ("week44", "week44"),
           ("week45", "week45"),
           ("week46", "week46"),
           ("week47", "week47"),
           ("week48", "week48"),
           ("week49", "week49"),
           ("week50", "week50"),
           ("week51", "week51"),
           ("week52", "week52"),
           ("week53", "week53"),

           )
class Taskmanager(models.Model):
   CurrentSprint = models.CharField(max_length=10, default="week01", 
   choices=week_number)
   todaydate = models.DateField()
   taskname = models.SlugField(max_length=200)
   testrun = models.URLField(max_length=300)
   comments = models.CharField(max_length=300)
   assignedto = models.EmailField(max_length=70)



   def __str__(self):
      return self.taskname

   def get_absolute_url(self):
      return reverse('Tasks:detail', kwargs={'slug': self.taskname})


 #Tasks.html
 <a href="{% url 'Tasks:detail' slug='detail'%}"> {{Taskmanager.todaydate}} 
 </a>

I need an output when I click the link, it needs to navigate to the details page where the details of the task needs to be displayed.

Thanks,

Gomathi Subramanaian

[mottaz hejaze]

i dont use class based views , but in function based views , my url would be like this 

urls.py

path(' ', views.list , name='list'),

path('<int:id>', views.detail , name='detail')

views.py

def list(request):

    ...

def detail(request, id)

    ...

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[Jason]

you need to provide some value in the URL to match to an instance.  Detail views say "I have this URL to a specific identifier, show the content of it"  You're passing in everything but that identifier, so django doesn't know how to handle it and throws an error.

[SACHIN CHAVAN]

Try this

Modify your urls.py file with

    path('<slug:taskname>/', TaskDetailView.as_view(), name='detail'),

On Mon, Jul 16, 2018 at 5:47 PM, Jason <jjohn...@gmail.com> wrote:

you need to provide some value in the URL to match to an instance.  Detail views say "I have this URL to a specific identifier, show the content of it"  You're passing in everything but that identifier, so django doesn't know how to handle it and throws an error.

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