title: Trying to include a form on another app's template with {% include %}, but getting "TemplateDoesNotExist"
body: <p>Currently, I can leave a comment about a post, but I have to go to a separate comment create page. I want to include the comment form right under the post in the group detail page. I have tried to use {% include %}, but it cant seem to find the form. This is probabaly because I am trying to render the form on a different app's template than where the form.py and comment_form.html are (I create the form and the template for the form in the 'comments' app, and I'm trying to include the form in the the 'groups' app on the detail page. here are the relevant files. </p>
  
  <p>comments/forms.py</p>
  
  <pre><code>from django import forms
  
  from .models import Comment
  
  class CommentForm(forms.ModelForm):
  
      class Meta:
          model = Comment
          fields = ('body',)
  </code></pre>
  
  <p>comments/comment_form.html </p>
  
  <pre><code>&lt;h2&gt;this is the comment form&lt;/h2&gt;
  &lt;form class="post-form" method="post"&gt;
    {% csrf_token %}
    {{ form.as_p }}
    &lt;button type="submit" class="save btn btn-default"&gt;Save&lt;/button&gt;
  &lt;/form&gt;
  </code></pre>
  
  <p>groups/views.detail :</p>
  
  <pre><code>def detail(request, group_id):
      group = get_object_or_404(Group, pk= group_id)
      posts = Post.objects.filter(group__id = group_id)
      form = CommentForm()
  
      return render(request, 'groups/detail.html', {'group': group, 'posts':posts, 'form':form})
  </code></pre>
  
  <p>groups/detail.html:</p>
  
  <pre><code>{% include form %}
  </code></pre>
  
  <p>this is the url that takes care of creating a comment (comments/urls.py): </p>
  
  <pre><code>from . import views
  from django.urls import path
  
  app_name = 'comments'
  
  urlpatterns = [
      path('&lt;int:post_id&gt;/create/', views.create, name='create'),
      path('delete/&lt;int:group_id&gt;/&lt;int:post_id&gt;/&lt;int:comment_id&gt;', views.delete, name='delete'),
  ]
  </code></pre>
  
  <p>again, it can't find the template, probabaly because I have to make the 'groups' app aware of 'comment_form.html' 's existence. how do I accomplish this? </p>