guys django form doesn't appear, what could I do?

[Aly_34_04 MR_34_04]

template:

  </li>

                <!-- Button trigger modal -->

                    <button type="button" class="btn btn-primary" data-toggle="modal" data-target="#exampleModal">

                      Bildiris bermek

                    </button>

                    <!-- Modal -->

                    <div class="modal fade" id="exampleModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">

                      <div class="modal-dialog" role="document">

                        <div class="modal-content">

                          <div class="modal-header">

                            <h5 class="modal-title" id="exampleModalLabel">Modal title</h5>

                            <button type="button" class="close" data-dismiss="modal" aria-label="Close">

                              <span aria-hidden="true">&times;</span>

                            </button>

                          </div>

                          <div class="modal-body">

                            <form id="add_form">

                                {% csrf_token %}

                                {{ form }}

                            </form>

                          </div>

                          <div class="modal-footer">

                            <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>

                            <button id="add_form" type="submit" class="btn btn-primary">Save changes</button>

                          </div>

                        </div>

                      </div>

                    </div>

                </ul>

                <form class="form-inline my-2 my-lg-0">

                    <input class="form-control mr-sm-2" type="search" placeholder="Gözlet" aria-label="Gözlet">

                    <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Gözlet</button>

                </form>

                </div>

                </nav>

                </div>

----------------------------------------------------

django form:

from django import forms

from .models import Post

class PostForm(forms.ModelForm):

class Meta:

model = Post

fields = '__all__'

def __init__(self, *args, **kwargs):

super().__init__(*args,**kwargs)

for field in self.fields:

self.fields[field].widget['class'] = 'form-control'

----------------------------------------------------------------------------------------

django views:

from django.shortcuts import render

from .models import Post

from .forms import PostForm

def add_post(request):

    if request.method == 'POST':

        form = PostForm(request.POST)

        if form.is_valid():

            form.save()

    template = 'home.html'

    context = {'form': PostForm(),}

    return render(request,template,context)

-----------------------------------------------------------------

django urls

from django.urls import path

from .import views

urlpatterns = [

    path('',views.home, name="home"),

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

    path('',views.add_post, name="home"),

]

----------------------------------------------------

django models:

from django.db import models

class Post(models.Model):

    title = models.CharField(max_length=50)

    date = models.DateTimeField(auto_now=True)

    text = models.TextField()

    class Meta:

        ordering = ('-date',)

    def __str__(self):

        return self.title