EmptyPage Fehler in der Django-Seitennummerierung

Ich versuche, eine digg-ähnliche Seitennummerierung in meiner Django-Anwendung vorzunehmen. Ich habe benutzerdefinierte TemplateTags verwendet. Die ersten und letzten Seiten funktionierten nicht und ich verstehe nicht, wie ich das beheben kann. Andere Seiten funktionieren jedoch einwandfrei. Wo habe ich Fehler gemacht?EmptyPage Fehler in der Django-Seitennummerierung

Erste Seite Fehler: EmptyPage: Das Seitenzahl kleiner als 1

Traceback (most recent call last): 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\core\handlers\exception.py", line 39, in inner 
    response = get_response(request) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\core\handlers\base.py", line 187, in _get_response 
    response = self.process_exception_by_middleware(e, request) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\core\handlers\base.py", line 185, in _get_response 
    response = wrapped_callback(request, *callback_args, **callback_kwargs) 
    File "C:\Users\Nurzhan\PycharmProjects\RMS\project\views.py", line 20, in project_list 
    return render(request, 'project/project_list.html', {'projects': projects, 'paginator': paginator}) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\shortcuts.py", line 30, in render 
    content = loader.render_to_string(template_name, context, request, using=using) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\loader.py", line 68, in render_to_string 
    return template.render(context, request) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\backends\django.py", line 66, in render 
    return self.template.render(context) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\base.py", line 208, in render 
    return self._render(context) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\base.py", line 199, in _render 
    return self.nodelist.render(context) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\base.py", line 994, in render 
    bit = node.render_annotated(context) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\base.py", line 961, in render_annotated 
    return self.render(context) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\loader_tags.py", line 174, in render 
    return compiled_parent._render(context) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\base.py", line 199, in _render 
    return self.nodelist.render(context) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\base.py", line 994, in render 
    bit = node.render_annotated(context) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\base.py", line 961, in render_annotated 
    return self.render(context) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\loader_tags.py", line 70, in render 
    result = block.nodelist.render(context) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\base.py", line 994, in render 
    bit = node.render_annotated(context) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\base.py", line 961, in render_annotated 
    return self.render(context) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\library.py", line 225, in render 
    _dict = self.func(*resolved_args, **resolved_kwargs) 
    File "C:\Users\Nurzhan\PycharmProjects\RMS\project\templatetags\pagination.py", line 48, in custom_paginator 
    'previous': page_obj.previous_page_number(), 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\core\paginator.py", line 136, in previous_page_number 
    return self.paginator.validate_number(self.number - 1) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\core\paginator.py", line 38, in validate_number 
    raise EmptyPage('That page number is less than 1') 
django.core.paginator.EmptyPage: That page number is less than 1

Letzte Seite Fehler: EmptyPage Diese Seite keine Ergebnisse enthält

Traceback (most recent call last): 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\core\handlers\exception.py", line 39, in inner 
    response = get_response(request) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\core\handlers\base.py", line 187, in _get_response 
    response = self.process_exception_by_middleware(e, request) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\core\handlers\base.py", line 185, in _get_response 
    response = wrapped_callback(request, *callback_args, **callback_kwargs) 
    File "C:\Users\Nurzhan\PycharmProjects\RMS\project\views.py", line 20, in project_list 
    return render(request, 'project/project_list.html', {'projects': projects, 'paginator': paginator}) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\shortcuts.py", line 30, in render 
    content = loader.render_to_string(template_name, context, request, using=using) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\loader.py", line 68, in render_to_string 
    return template.render(context, request) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\backends\django.py", line 66, in render 
    return self.template.render(context) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\base.py", line 208, in render 
    return self._render(context) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\base.py", line 199, in _render 
    return self.nodelist.render(context) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\base.py", line 994, in render 
    bit = node.render_annotated(context) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\base.py", line 961, in render_annotated 
    return self.render(context) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\loader_tags.py", line 174, in render 
    return compiled_parent._render(context) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\base.py", line 199, in _render 
    return self.nodelist.render(context) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\base.py", line 994, in render 
    bit = node.render_annotated(context) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\base.py", line 961, in render_annotated 
    return self.render(context) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\loader_tags.py", line 70, in render 
    result = block.nodelist.render(context) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\base.py", line 994, in render 
    bit = node.render_annotated(context) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\base.py", line 961, in render_annotated 
    return self.render(context) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\library.py", line 225, in render 
    _dict = self.func(*resolved_args, **resolved_kwargs) 
    File "C:\Users\Nurzhan\PycharmProjects\RMS\project\templatetags\pagination.py", line 48, in custom_paginator 
    'previous': page_obj.previous_page_number(), 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\core\paginator.py", line 136, in previous_page_number 
    return self.paginator.validate_number(self.number - 1) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\core\paginator.py", line 38, in validate_number 
    raise EmptyPage('That page number is less than 1') 
django.core.paginator.EmptyPage: That page number is less than 1 
[04/Mar/2017 19:13:59] "GET /ru/account/dashboard/project/list/?page=1 HTTP/1.1" 500 152849 
Internal Server Error: /ru/account/dashboard/project/list/ 
Traceback (most recent call last): 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\core\handlers\exception.py", line 39, in inner 
    response = get_response(request) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\core\handlers\base.py", line 187, in _get_response 
    response = self.process_exception_by_middleware(e, request) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\core\handlers\base.py", line 185, in _get_response 
    response = wrapped_callback(request, *callback_args, **callback_kwargs) 
    File "C:\Users\Nurzhan\PycharmProjects\RMS\project\views.py", line 20, in project_list 
    return render(request, 'project/project_list.html', {'projects': projects, 'paginator': paginator}) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\shortcuts.py", line 30, in render 
    content = loader.render_to_string(template_name, context, request, using=using) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\loader.py", line 68, in render_to_string 
    return template.render(context, request) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\backends\django.py", line 66, in render 
    return self.template.render(context) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\base.py", line 208, in render 
    return self._render(context) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\base.py", line 199, in _render 
    return self.nodelist.render(context) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\base.py", line 994, in render 
    bit = node.render_annotated(context) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\base.py", line 961, in render_annotated 
    return self.render(context) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\loader_tags.py", line 174, in render 
    return compiled_parent._render(context) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\base.py", line 199, in _render 
    return self.nodelist.render(context) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\base.py", line 994, in render 
    bit = node.render_annotated(context) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\base.py", line 961, in render_annotated 
    return self.render(context) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\loader_tags.py", line 70, in render 
    result = block.nodelist.render(context) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\base.py", line 994, in render 
    bit = node.render_annotated(context) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\base.py", line 961, in render_annotated 
    return self.render(context) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\template\library.py", line 225, in render 
    _dict = self.func(*resolved_args, **resolved_kwargs) 
    File "C:\Users\Nurzhan\PycharmProjects\RMS\project\templatetags\pagination.py", line 49, in custom_paginator 
    'next': page_obj.next_page_number(), 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\core\paginator.py", line 133, in next_page_number 
    return self.paginator.validate_number(self.number + 1) 
    File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\core\paginator.py", line 43, in validate_number 
    raise EmptyPage('That page contains no results') 
django.core.paginator.EmptyPage: That page contains no results 
[04/Mar/2017 19:16:12] "GET /ru/account/dashboard/project/list/?page=12 HTTP/1.1" 500 152777

views.py

def project_list(request): 
    objects = Project.objects.filter(status='public', membership__user=request.user) 
    paginator = Paginator(objects, 1) 

    page = request.GET.get('page') 
    try: 
     projects = paginator.page(page) 
    except PageNotAnInteger: 
     # If page is not an integer, deliver first page. 
     projects = paginator.page(1) 
    except EmptyPage: 
     # If page is out of range (e.g. 9999), deliver last page of results. 
     projects = paginator.page(paginator.num_pages) 

    return render(request, 'project/project_list.html', {'projects': projects, 'paginator': paginator})

pagination.py

from django import template 

register = template.Library() 

LEADING_PAGE_RANGE_DISPLAYED = TRAILING_PAGE_RANGE_DISPLAYED = 5 
LEADING_PAGE_RANGE = TRAILING_PAGE_RANGE = 4 
NUM_PAGES_OUTSIDE_RANGE = 2 
ADJACENT_PAGES = 2 


def custom_paginator(context): 
    paginator = context['paginator'] 
    page_obj = context['projects'] 
    pages = paginator.num_pages 
    page = page_obj.number 
    in_leading_range = in_trailing_range = False 
    pages_outside_leading_range = pages_outside_trailing_range = range(0) 
    if pages <= LEADING_PAGE_RANGE_DISPLAYED + NUM_PAGES_OUTSIDE_RANGE + 1: 
     in_leading_range = in_trailing_range = True 
     page_range = [n for n in range(1, pages + 1)] 
    elif page <= LEADING_PAGE_RANGE: 
     in_leading_range = True 
     page_range = [n for n in range(1, LEADING_PAGE_RANGE_DISPLAYED + 1)] 
     pages_outside_leading_range = [n + pages for n in range(0, -NUM_PAGES_OUTSIDE_RANGE, -1)] 
    elif page > pages - TRAILING_PAGE_RANGE: 
     in_trailing_range = True 
     page_range = [n for n in range(pages - TRAILING_PAGE_RANGE_DISPLAYED + 1, pages + 1) if 0 < n <= pages] 
     pages_outside_trailing_range = [n + 1 for n in range(0, NUM_PAGES_OUTSIDE_RANGE)] 
    else: 
     page_range = [n for n in range(page - ADJACENT_PAGES, page + ADJACENT_PAGES + 1) if 0 < n <= pages] 
     pages_outside_leading_range = [n + pages for n in range(0, -NUM_PAGES_OUTSIDE_RANGE, -1)] 
     pages_outside_trailing_range = [n + 1 for n in range(0, NUM_PAGES_OUTSIDE_RANGE)] 

    request = context['request'] 
    params = request.GET.copy() 
    if 'page' in params: 
     del (params['page']) 
    get_params = params.urlencode() 

    return { 
     'pages': pages, 
     'page': page, 
     'previous': page_obj.previous_page_number(), 
     'next': page_obj.next_page_number(), 
     'has_previous': page_obj.has_previous(), 
     'has_next': page_obj.has_next(), 
     'page_range': page_range, 
     'in_leading_range': in_leading_range, 
     'in_trailing_range': in_trailing_range, 
     'pages_outside_leading_range': pages_outside_leading_range, 
     'pages_outside_trailing_range': pages_outside_trailing_range, 
     'get_params': get_params, 
    } 


register.inclusion_tag("project/pagination.html", takes_context=True)(custom_paginator)

project_list.html

{% for project in projects %} 
    *** LIST OF PROJECTS HERE *** 
{% endfor %} 
{% custom_paginator %}

pagination.html

{% spaceless %} 
    {% if has_previous %} 
    <li><a href="{% if get_params %}?{{ get_params }}&{% else %}?{% endif %}page={{ previous }}">&laquo; Prev</a></li> 
    {% endif %} 
    {% if not in_leading_range %} 
    {% for p in pages_outside_trailing_range %} 
     <li><a href="{% if get_params %}?{{ get_params }}&{% else %}?{% endif %}page={{ p }}">{{ p }}</a></li> 
    {% endfor %} 
    <li><span class="ellipsis">...</span></li> 
    {% endif %} 
    {% for p in page_range %} 
    {% if p == page %} 
     <li><span class="active">{{ p }}</span></li> 
    {% else %} 
     <li><a href="{% if get_params %}?{{ get_params }}&{% else %}?{% endif %}page={{ p }}">{{ p }}</a></li> 
    {% endif %} 
    {% endfor %} 
    {% if not in_trailing_range %} 
    <li><span class="ellipsis">...</span></li> 
    {% for p in pages_outside_leading_range reversed %} 
     <li><a href="{% if get_params %}?{{ get_params }}&{% else %}?{% endif %}page={{ p }}">{{ p }}</a></li> 
    {% endfor %} 
    {% endif %} 
    {% if has_next %} 
    <li><a href="{% if get_params %}?{{ get_params }}&{% else %}?{% endif %}page={{ next }}">Next &raquo;</a></li> 
    {% endif %} 
{% endspaceless %}

Quelle

2017-03-04 Nurzhan Nogerbek

Was ist, dass custom_paginator Template-Tag für und wo Sie es verwenden? Außerdem müssen Sie uns die vollständigen Rückverfolgungen zeigen, nicht nur die letzten Zeilen. –

@DanielRoseman Ich aktualisiere meinen Beitrag mit vollständigem Traceback und custom_paginator, den ich in meiner project_list.html Datei verwende. Haben Sie Ideen, wie Sie diesen Fehler beheben können? –

Die Rückverfolgungen zeigen, dass der Fehler auftritt in Ihr Vorlagen-Tag Sie rufen previous_page_number und next_page_number auf, ohne zu überprüfen, ob has_previous und has_next True zurückgeben.

Aber ich kann nicht wirklich sehen, warum Sie das tun würden; besser, um page_obj zu übergeben und rufen Sie die Methoden direkt in der Vorlage auf.

{% if page_obj.has_previous %} 
    <li><a href="{% if get_params %}?{{ get_params }}&{% else %}?{% endif %}page={{ page_obj.previous_page_number }}">&laquo; Prev</a></li> 
{% endif %}

usw.

Quelle

2017-03-04 14:22:46

EmptyPage Fehler in der Django-Seitennummerierung

Antwort

Verwandte Themen