Django filter and display in template if object exists

Question

models.py:

class Level(models.Model):
    number = models.IntegerField()
    badge = models.ImageField()
    locked_badge = models.ImageField()
    timestamp=
    models.DateTimeField(auto_now_add=True,auto_now=False,blank=True, 
    null=True)
    unlock = models.CharField(max_length=10,default="A")

    def __str__(self):
        return str(self.number)
    def get_absolute_url(self):
        return reverse('student:level-detail', kwargs={'pk': self.pk})

class ToDo(models.Model):
    level = models.ForeignKey(Level, on_delete=models.CASCADE)
    name = models.CharField(max_length=150)
    description = models.TextField()
    timestamp = 
    models.DateTimeField(auto_now_add=True,auto_now=False,blank=True, 
    null=True)

    def __str__(self):
        return self.name


class PostManager(models.Manager):
    def active(self, *args, **kwargs):
        #Post.objects.all() = super(PostManager, self).all()
        return super(PostManager, 
        self).filter(draft=False).filter(publish__lte=timezone.now())



class Task(models.Model):
     level = models.ForeignKey(Level, on_delete=models.CASCADE)
     todo = models.ForeignKey(ToDo, on_delete=models.CASCADE)
     student = models.ForeignKey(User, on_delete=models.CASCADE)
     title = models.CharField(max_length=150)
     content = models.TextField()
     timestamp = models.TimeField(auto_now=True)
     datestamp = models.DateField( auto_now=True)
     like = 
     models.ManyToManyField(User,related_name='user_likes',blank=True)
     is_verified=models.BooleanField(default=False,blank=True)

     def __str__(self):
         return self.title

     def get_absolute_url(self):
        return reverse('student:dashboard')
        objects = PostManager()

     @property
     def comments(self):
        instance = self
        qs = Comment.objects.filter_by_instance(instance)
        return qs

     @property
     def get_content_type(self):
        instance = self
        content_type = 
        ContentType.objects.get_for_model(instance.__class__)
        return content_type

My views.py:

@login_required(login_url='/account/login/')
def StudentLevelDetailView(request,pk=None):

    if not request.user.is_client:
        return HttpResponse("You are in trainer account")

    else:
        Client=ClientProfile.objects.get(user=request.user)
        subscription=Client.subscription
        instance = get_object_or_404(Level, pk=pk)

        todos=ToDo.objects.filter(level=instance)
        tasks=Task.objects.filter(todo=todos,level=instance)


        notifications =  
        Notification.objects.exclude(sender=request.user)
        .filter(receiver=request.user).order_by('-timestamp')
        acceptnotify = Addnotify.objects
       .filter(receiver=request.user).order_by('-timestamp')
       follownotify = FollowNotify.objects
       .filter(receiver=request.user).order_by('-timestamp')
       hubnotifications = HubNotify.objects
       .filter(receiver=request.user).order_by('-timestamp')
       newnotifications = int(
       Notification.objects.exclude(sender=request.user)
       .filter(receiver=request.user, viewed=False).count() +
        FollowNotify.objects.exclude(sender=request.user)
       .filter(receiver=request.user, viewed=False).count() +
        HubNotify.objects.exclude(sender=request.user)
       .filter(receiver=request.user, viewed=False).count() +
         Addnotify.objects.exclude(sender=request.user)
       .filter(receiver=request.user, viewed=False).count())

        global is_paid_member
        global is_paid_fellow
        context = {
         'paidmember':is_paid_member,
         'paidfellow': is_paid_fellow,
         'task': instance,
         'tasks':tasks,
         'notifications': notifications,
         'newnotify': newnotifications,
         'completed':False,
         'subscription': subscription,
         'hubnotify': hubnotifications,
         'acceptnotify': acceptnotify,
         'follownotify': follownotify,
     }

        return render(request,'task_list.html',context)

template:

 {% for obj in task.todo_set.all %}
    <div class="card">
    <div class="card-header" id="headingOne">
        <h5 class="mb-0">
        <button style="width: 100%;" class="btn" data- 
toggle="collapse" data-target="#{{ obj.id }}" aria-expanded="true">
    #Only display based on condition        
<span class="mytaskbutton"><i class="fas fa-check"></i> 
 </span></i> &nbsp;
 {{ obj.name }}
        </button>
        </h5>
    </div>

    <div id="{{ obj.id }}" class="collapse" aria- 
  labelledby="headingOne" data-parent="#accordion">
        <div class="card-body">
            {{ obj.description }}
        <div>
        <a data-click="swal-taskcompleted" href="{% url 'student:task- 
  form' task.id obj.id %}" style="width: 100%;" type="button" 
  class="btn btn-primary">Proceed</a>
        </div>
        </div>
    </div>
    </div>
  {% endfor %}

Task getting saved when form is filled:

@login_required(login_url='/account/login/')
 def TaskCreateView(request,pk,todo_id):
     if not request.user.is_authenticated:
        return redirect('accounts:index')
     elif User.objects.filter(pk=request.user.pk, 
        mentor__isnull=True).exists():
        instance = get_object_or_404(Level, pk=pk)
        sweetify.error(request, 'You have not added a trainer yet')
        print("TRAINER ILADA")


        return HttpResponseRedirect(instance.get_absolute_url())
     else:
       instance = get_object_or_404(Level, pk=pk)
       qs = instance.todo_set.get(id=todo_id)
       #user = Task.objects.filter(student=request.user)
       todo = Task.objects.filter(todo=qs, student=request.user)

       print("TODO COUNT",todo.count())

     if todo.exists():
        print("TODO COUNT ALRAESY EXISTA", todo.count())
        messages.error(request, 'You already completed this task')
        return redirect('student:level-detail',pk=instance.id)

     form = StudentTaskForm(request.POST or None, request.FILES or None)

    if form.is_valid():
        form.instance.user = User.objects.get(id=request.user.id)

        obj = form.save(commit=False)
        obj.student = request.user
        obj.todo = qs
        obj.level = instance
        obj.save()



    ImageFormSet = modelformset_factory(Images,
                                        form=ImageForm,min_num=0,
                                 max_num=3,  
    validate_min=True,extra=3)

    if request.method == 'POST':
        formset = ImageFormSet(request.POST, request.FILES,
                           queryset=Images.objects.none())
    if formset.is_valid():
        for form in formset.cleaned_data:
            try:
                image = form['image']

                Images.objects.create(post=todo[0],image=image)
            except KeyError:
                pass
         return redirect('student:dashboard')
     else:
        formset = ImageFormSet(queryset=Images.objects.none())

        notifications = 
Notification.objects.exclude(sender=request.user)
       .filter(receiver=request.user)
       newnotifications = int(
       Notification.objects.exclude(sender=request.user)
       .filter(receiver=request.user, viewed=False).count() +
       FollowNotify.objects.exclude(sender=request.user)
    .filter(receiver=request.user, viewed=False).count() +
    HubNotify.objects.exclude(sender=request.user)
   .filter(receiver=request.user, viewed=False).count() +
    Addnotify.objects.exclude(sender=request.user)
   .filter(receiver=request.user, viewed=False).count())

   hubnotifications=HubNotify.objects
   .filter(receiver=request.user).order_by('-timestamp')
    acceptnotify = Addnotify.objects
  .filter(receiver=request.user).order_by('-timestamp')
   follownotify = FollowNotify.objects
  .filter(receiver=request.user).order_by('-timestamp')
  counts=int(todo.count())

 context={
    'form': form,
    "qs": qs,
    'todo':todo,
    'formset': formset,
    'notifications': notifications,
    'hubnotify': hubnotifications,
    'newnotify': newnotifications,
    'acceptnotify': acceptnotify,
    'follownotify': follownotify,

}


return render(request,'task_form.html',context)

StudentTaskForm is a model form .Has model as Task

I have 3 models. Todo, Level, and Task. Each Level contains many 'todos'. Tasks are basically completed todos. So if a todo is completed, it is saved as a Task. I want the check icon in the 'todo' list be displayed if 'todo' is already completed, that is if this 'todo' is saved as a task. The icon with class "fas fa-check" specifically should be displayed only if this todo is completed. The 'todos' are displayed as a list. In the template, the Level is passed as 'task'... So all the 'todos' in the level are pulled by task.todo_set.all... I want the 'todos' that are also in the Task which is basically all the completed todos to have the check

Oh, so what does your view look like? It seems like all of this could be handled in your view. — Carl Brubaker, Nov 02 '18 at 01:42
so you want a check for every `obj` in `{% for obj in task.todo_set.all %}`? — Carl Brubaker, Nov 02 '18 at 01:50
yes...Just one thing...task is actually Level here...All Tasks ,im passing as tasks @CarlBrubaker — Mohit Harshan, Nov 02 '18 at 01:57
Sorry.. That is not what i want.I dont want check for every objects... For Task model there is a foreign key to Todo...I m displaying the todoset of the level.....I want the check for only the todos that are saved in Task which means a todo has been completed @CarlBrubaker — Mohit Harshan, Nov 02 '18 at 01:59
tasks = Task.objects.filter(student=request.user,level=instance) print("TASKS",tasks.count()) When i do this i get the correct number of completed todos.Now how do i implement..@CarlBrubaker — Mohit Harshan, Nov 02 '18 at 02:38

Carl Brubaker · Answer 1 · 2018-11-02T17:56:31.697

0

So you are looking to display all todos in a level to a student with checks next to those that are completed.

view

# find all todos for level.
todos=ToDo.objects.filter(level=instance)
# lists to hold todos.
complete = []
incomplete = []
# Separate complete and incomplete todos.
for todo in todos:
    # Check if task exists to signify complete.
    if Task.objects.filter(student=student, todo=todo).exists():
        complete.append(todo)
    else:
        # If no task, add to incomplete.
        incomplete.append(todo)

# Send both lists to template.
{'complete': complete, 'incomplete': incomplete}

template

{% for c in complete %}
  <!-- If complete make it checked. -->
  <div><input type="checkbox" checked>Todo Detail</div>
{% endfor %}
{% for i in incomplete %}
  <!-- If incomplete leave it unchecked. -->
  <div><input type="checkbox">Todo Detail</div>
{% endfor %}

As far as protected checked checkboxes, Check out this link to see what works for you.

Hopefully this gets you on the right track.

edited Nov 02 '18 at 17:56

answered Nov 02 '18 at 00:01

Carl Brubaker

1,602
11
26

The task model is actually only to use model forms. So only when the user fills out a form, an object gets saved as task which is equavalent to completing a todo. So is this boolean field necessary? – Mohit Harshan Nov 02 '18 at 01:24
how to get only todo fields from the filtered Task objects...By this i can compare {% if obj in filteredtodo %} – Mohit Harshan Nov 02 '18 at 02:44
Are you sure you can do filtering inside templates? – Mohit Harshan Nov 02 '18 at 13:04
Oops. No. Check this out. [template filter](https://stackoverflow.com/questions/223990/how-do-i-perform-query-filtering-in-django-templates) – Carl Brubaker Nov 02 '18 at 13:22
Ok last attempt. I'm going to delete most of my comments as they seem irrelevant now. – Carl Brubaker Nov 02 '18 at 17:57
No need ..I have completed this issue .Help me with my new question :p – Mohit Harshan Nov 02 '18 at 18:05
https://stackoverflow.com/questions/53122774/check-if-all-objects-belong-to-a-list-django .Check this – Mohit Harshan Nov 02 '18 at 18:07
What's your question? – Carl Brubaker Nov 02 '18 at 18:08
This Link : https://stackoverflow.com/questions/53122774/check-if-all-objects-belong-to-a-list-django – Mohit Harshan Nov 02 '18 at 18:08

score 0 · Accepted Answer · edited Nov 02 '18 at 03:24

0

  tasks = Task.objects.filter(student=request.user,level=instance).only("todo")
  list=[]
  for task in tasks:
     list.append(task.todo)

This worked for me. I add all todos from the filtered tasks to a list and then pass this list to the template. Then I just had to compare

 {% if obj in list %}
  #display check
 {% endif %}

edited Nov 02 '18 at 03:24

Suneel Kumar

5,621
3
31
44

answered Nov 02 '18 at 02:57

Mohit Harshan

1,916
1
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41

Django filter and display in template if object exists

2 Answers2

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