Django - intでなくstrでなければならない

Question

私は面白い例外があります。

私はこのような私のコードがある場合：

{% if page_nr != 0 %} 
    <a href="{% url 'post:detail' topic.id page_nr|increase:-1 %}">Previous Page</a> 
{% endif %} 
{%page_not_over_amount page_nr amount_comments limit_amount_comment%} 
{% if comment_not_over_amount %} 
    <a href="{% url 'post:detail' topic.id page_nr|increase:1 %}">Next Page</a> 
{% endif %} 

を、私は例外を取得します：テンプレートCで を演出テンプレート中 エラー：\ Users \ユーザーNutzer \ PycharmProjects \ selfTry \ポスト\テンプレートを\ポスト\ comment_block.html、ライン でエラーがstrをしなければならない、int型ではない

ライン22は

0123です

{% if page_nr != 0 %} 
    <a href="{% url 'post:detail' topic.id page_nr|increase:-1 %}">Previous Page</a> 
{% endif %} 

{% if comment_not_over_amount %} 
    <a href="{% url 'post:detail' topic.id page_nr|increase:1 %}">Next Page</a> 
{% endif %} 

例外がなくなっている：私は私のカスタムタグを削除する場合

はしかし、私のコードは次のように見えるように！ これは私のカスタムタグやフィルタです：

@register.inclusion_tag('post/comment_block.html') 
def page_not_over_amount(page_nr, comment_amount, comment_limit): 
    result = page_nr * comment_limit < comment_amount - comment_limit 
    return {'comment_not_over_amount': result} 

@register.filter(name='increase') 
def increase_variable(value, increase): 
    data = value + increase 
    return data 

@register.inclusion_tag('post/comment_block.html') 
def limit_amount_in_a_page(page_nr, topic_id=1, amount=5): 
    topic = get_object_or_404(Topic,id=topic_id) 
    comments = Comment.objects.filter(topic=topic) 
    selected_comments = [] 
    starting_index = page_nr*amount 
    for index in range(starting_index, starting_index + amount): 
     if index >= len(comments): 
      break; 
     selected_comments.append(comments[index]) 
    return { 
     'topic': topic, 
     'page_nr': page_nr, 
     'selected_comments': selected_comments, 
     'amount_comments': comments.all().count(), 
     'limit_amount_comment': amount, 
    } 

アルビュー：

def index(request): 
    all_topics = Topic.objects.all() 
    context = { 
     'my_topics': all_topics, 
    } 
    return render(request, 'post/index.html', context) 


def detail(request, topic_id, page_nr): 
    topic = get_object_or_404(Topic, id=topic_id) 
    form = CommentForm() 
    comments = Comment.objects.filter(topic=topic) 

    return render(request, 'post/detail.html', { 
     'topic': topic, 
     'form': form, 
     'comments': comments, 
     'page_nr': int(page_nr), 
    }) 


@csrf_protect 
def comment(request, topic_id, user_id): 
    # if this is a POST request we need to process the form data 
    topic = get_object_or_404(Topic, id=topic_id) 
    # try: 
    if request.method == 'POST': 
     # create a form instance and populate it with data from the request: 
     form = CommentForm(request.POST) 
     # check whether it's valid: 
     if form.is_valid(): 
      # process the data in form.cleaned_data as required 
      text = form.cleaned_data['comment'] 
      args = {'form': form, 'topic': topic} 
      # save the data in database 
      save_comments_into_database(topic, int(user_id), text) 
      # redirect to a new URL: 
      return HttpResponseRedirect('../..', args) 

    # if a GET (or any other method) we'll create a blank form 
    else: 
     form = CommentForm() 
     return render(request, 'post/detail.html', {'form': form, 'topic': topic}) 

ここでは、すべてのトレースバックです：

Environment: 


Request Method: GET 
Request URL: http://127.0.0.1:8000/post/1/0/ 

Django Version: 1.11.3 
Python Version: 3.6.2 
Installed Applications: 
['post.apps.PostConfig', 
'music.apps.MusicConfig', 
'django.contrib.admin', 
'django.contrib.auth', 
'django.contrib.contenttypes', 
'django.contrib.sessions', 
'django.contrib.messages', 
'django.contrib.staticfiles'] 
Installed Middleware: 
['django.middleware.security.SecurityMiddleware', 
'django.contrib.sessions.middleware.SessionMiddleware', 
'django.middleware.common.CommonMiddleware', 
'django.middleware.csrf.CsrfViewMiddleware', 
'django.contrib.auth.middleware.AuthenticationMiddleware', 
'django.contrib.messages.middleware.MessageMiddleware', 
'django.middleware.clickjacking.XFrameOptionsMiddleware'] 


Template error: 
In template    C:\Users\Nutzer\PycharmProjects\selfTry\post\templates\post\comment_block.html,  error at line 22 
    must be str, not int 

Traceback: 

File "C:\Users\Nutzer\AppData\Local\Programs\Python\Python36-32\lib\site- packages\django\core\handlers\exception.py" in inner 
    41.    response = get_response(request) 

File "C:\Users\Nutzer\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\core\handlers\base.py" in _get_response 
    187.     response = self.process_exception_by_middleware(e, request) 

File "C:\Users\Nutzer\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\core\handlers\base.py" in _get_response 
    185.     response = wrapped_callback(request, *callback_args, **callback_kwargs) 

File "C:\Users\Nutzer\PycharmProjects\selfTry\post\views.py" in detail 
    27.   'page_nr': int(page_nr), 

File "C:\Users\Nutzer\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\shortcuts.py" in render 
    30.  content = loader.render_to_string(template_name, context, request, using=using) 

File "C:\Users\Nutzer\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\template\loader.py" in render_to_string 
    68.  return template.render(context, request) 

File "C:\Users\Nutzer\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\template\backends\django.py" in render 
    66.    return self.template.render(context) 

File "C:\Users\Nutzer\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\template\base.py" in render 
    207.      return self._render(context) 

File "C:\Users\Nutzer\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\template\base.py" in _render 
    199.   return self.nodelist.render(context) 

File "C:\Users\Nutzer\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\template\base.py" in render 
990.     bit = node.render_annotated(context) 

File "C:\Users\Nutzer\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\template\base.py" in render_annotated 
    957.    return self.render(context) 

File "C:\Users\Nutzer\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\template\library.py" in render 
    245.   return t.render(new_context) 

File "C:\Users\Nutzer\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\template\base.py" in render 
    209.     return self._render(context) 

File "C:\Users\Nutzer\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\template\base.py" in _render 
    199.   return self.nodelist.render(context) 

File "C:\Users\Nutzer\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\template\base.py" in render 
    990.     bit = node.render_annotated(context) 

ile "C:\Users\Nutzer\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\template\base.py" in render_annotated 
    957.    return self.render(context) 

File "C:\Users\Nutzer\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\template\library.py" in render 
    245.   return t.render(new_context) 

File "C:\Users\Nutzer\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\template\base.py" in render 
    209.     return self._render(context) 

File "C:\Users\Nutzer\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\template\base.py" in _render 
    199.   return self.nodelist.render(context) 

File "C:\Users\Nutzer\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\template\base.py" in render 
    990.     bit = node.render_annotated(context) 

File "C:\Users\Nutzer\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\template\base.py" in render_annotated 
    957.    return self.render(context) 

File "C:\Users\Nutzer\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\template\defaulttags.py" in render 
    322.     return nodelist.render(context) 

File "C:\Users\Nutzer\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\template\base.py" in render 
    990.     bit = node.render_annotated(context) 

File "C:\Users\Nutzer\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\template\base.py" in render_annotated 
    957.    return self.render(context) 

File "C:\Users\Nutzer\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\template\defaulttags.py" in render 
    441.   args = [arg.resolve(context) for arg in self.args] 

File "C:\Users\Nutzer\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\template\defaulttags.py" in <listcomp> 
    441.   args = [arg.resolve(context) for arg in self.args] 

File "C:\Users\Nutzer\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\template\base.py" in resolve 
    736.     new_obj = func(obj, *arg_vals) 

File "C:\Users\Nutzer\PycharmProjects\selfTry\post\templatetags\post_filters.py" in increase_variable 
    10.  data = value + increase 

Exception Type: TypeError at /post/1/0/ 
Exception Value: must be str, not int 

Answer 1

File "C:\Users\Nutzer\PycharmProjects\selfTry\post\templatetags\post_filters.py" in increase_variable 
    10.  data = value + increase 

TypeErrorを上げます場所ですpage_not_over_amountメソッドでこれが表示されないので、手動でデバッグする必要があります。

Answer 2

あなたは、これはあるデータ=値+増加を

data = int(value) + int(increase)