'ascii' Codec kann das Zeichen u '\ u2019' nicht an Position 5 codieren: Ordnungszahl nicht im Bereich (128) Fehler

Question

Ich benutze Feed Parser um Objekte für ein Django Modell zu erstellen.

In meinem models.py, ich habe folgendes Modell:

class Content(models.Model): 
    title = models.CharField(max_length=500) 
    link = models.URLField() 
    description = models.TextField() 
    category = models.CharField(max_length=500, blank=True) 

Und ich schrieb eine Funktion, um tatsächlich die Objekte für dieses Modell zu erstellen: schön

def generate_content_from_feed(rss_url): 
    parsed_feed = feedparser.parse(rss_url) 

    for item in parsed_feed['items']: 
     if not Content.objects.filter(link=item['link']).exists(): 
      content = Content.objects.create(
       title=item['title'].encode('utf-8'), 
       link=item['link'], 
       description=item['description'].encode('utf-8'), 
      ) 
      if item['category']: 
       content.category = item['category'] 
      content.save() 

Die Objekte erstellt bekommen, In meinem Admin-Panel können jedoch einige Objekte nicht geöffnet werden. Andere öffnen ganz gut, aber für einige, bekomme ich diesen Fehler:

'ascii' codec can't encode character u'\u2019' in position 5: ordinal not in range(128) 

Ich dachte, es hat etwas mit dem Titel oder der Beschreibung zu tun hatte, weshalb ich kodieren hinzugefügt (‚utf-8‘), aber auch dann bleibt das Problem bestehen. Wie löse ich das? Und was genau ist das Problem hier?

Das ist mein voller Zurückverfolgungs:

Environment: 


Request Method: GET 
Request URL: http://127.0.0.1:8000/admin/myapp/content/40/change/ 

Django Version: 1.9.5 
Python Version: 2.7.10 
Installed Applications: 
['django.contrib.admin', 
'django.contrib.auth', 
'django.contrib.contenttypes', 
'django.contrib.sessions', 
'django.contrib.messages', 
'django.contrib.staticfiles', 
'rest_framework', 
'myapp'] 
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.auth.middleware.SessionAuthenticationMiddleware', 
'django.contrib.messages.middleware.MessageMiddleware', 
'django.middleware.clickjacking.XFrameOptionsMiddleware'] 


Template error: 
In template /Users/user/my_django_project/myvenv/lib/python2.7/site-packages/django/contrib/admin/templates/admin/change_form.html, error at line 21 
    ascii 11 : {% block coltype %}colM{% endblock %} 
    12 : 
    13 : {% block bodyclass %}{{ block.super }} app-{{ opts.app_label }} model-{{ opts.model_name }} change-form{% endblock %} 
    14 : 
    15 : {% if not is_popup %} 
    16 : {% block breadcrumbs %} 
    17 : <div class="breadcrumbs"> 
    18 : <a href="{% url 'admin:index' %}">{% trans 'Home' %}</a> 
    19 : &rsaquo; <a href="{% url 'admin:app_list' app_label=opts.app_label %}">{{ opts.app_config.verbose_name }}</a> 
    20 : &rsaquo; {% if has_change_permission %}<a href="{% url opts|admin_urlname:'changelist' %}">{{ opts.verbose_name_plural|capfirst }}</a>{% else %}{{ opts.verbose_name_plural|capfirst }}{% endif %} 
    21 : &rsaquo; {% if add %}{% trans 'Add' %} {{ opts.verbose_name }}{% else %} {{ original|truncatewords:"18" }} {% endif %} 
    22 : </div> 
    23 : {% endblock %} 
    24 : {% endif %} 
    25 : 
    26 : {% block content %}<div id="content-main"> 
    27 : {% block object-tools %} 
    28 : {% if change %}{% if not is_popup %} 
    29 : <ul class="object-tools"> 
    30 :  {% block object-tools-items %} 
    31 :  <li> 


Traceback: 

File "/Users/user/my_django_project/myvenv/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response 
    174.      response = self.process_exception_by_middleware(e, request) 

File "/Users/user/my_django_project/myvenv/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response 
    172.      response = response.render() 

File "/Users/user/my_django_project/myvenv/lib/python2.7/site-packages/django/template/response.py" in render 
    160.    self.content = self.rendered_content 

File "/Users/user/my_django_project/myvenv/lib/python2.7/site-packages/django/template/response.py" in rendered_content 
    137.   content = template.render(context, self._request) 

File "/Users/user/my_django_project/myvenv/lib/python2.7/site-packages/django/template/backends/django.py" in render 
    95.    return self.template.render(context) 

File "/Users/user/my_django_project/myvenv/lib/python2.7/site-packages/django/template/base.py" in render 
    206.      return self._render(context) 

File "/Users/user/my_django_project/myvenv/lib/python2.7/site-packages/django/template/base.py" in _render 
    197.   return self.nodelist.render(context) 

File "/Users/user/my_django_project/myvenv/lib/python2.7/site-packages/django/template/base.py" in render 
    992.     bit = node.render_annotated(context) 

File "/Users/user/my_django_project/myvenv/lib/python2.7/site-packages/django/template/base.py" in render_annotated 
    959.    return self.render(context) 

File "/Users/user/my_django_project/myvenv/lib/python2.7/site-packages/django/template/loader_tags.py" in render 
    173.   return compiled_parent._render(context) 

File "/Users/user/my_django_project/myvenv/lib/python2.7/site-packages/django/template/base.py" in _render 
    197.   return self.nodelist.render(context) 

File "/Users/user/my_django_project/myvenv/lib/python2.7/site-packages/django/template/base.py" in render 
    992.     bit = node.render_annotated(context) 

File "/Users/user/my_django_project/myvenv/lib/python2.7/site-packages/django/template/base.py" in render_annotated 
    959.    return self.render(context) 

File "/Users/user/my_django_project/myvenv/lib/python2.7/site-packages/django/template/loader_tags.py" in render 
    173.   return compiled_parent._render(context) 

File "/Users/user/my_django_project/myvenv/lib/python2.7/site-packages/django/template/base.py" in _render 
    197.   return self.nodelist.render(context) 

File "/Users/user/my_django_project/myvenv/lib/python2.7/site-packages/django/template/base.py" in render 
    992.     bit = node.render_annotated(context) 

File "/Users/user/my_django_project/myvenv/lib/python2.7/site-packages/django/template/base.py" in render_annotated 
    959.    return self.render(context) 

File "/Users/user/my_django_project/myvenv/lib/python2.7/site-packages/django/template/defaulttags.py" in render 
    326.     return nodelist.render(context) 

File "/Users/user/my_django_project/myvenv/lib/python2.7/site-packages/django/template/base.py" in render 
    992.     bit = node.render_annotated(context) 

File "/Users/user/my_django_project/myvenv/lib/python2.7/site-packages/django/template/base.py" in render_annotated 
    959.    return self.render(context) 

File "/Users/user/my_django_project/myvenv/lib/python2.7/site-packages/django/template/loader_tags.py" in render 
    69.     result = block.nodelist.render(context) 

File "/Users/user/my_django_project/myvenv/lib/python2.7/site-packages/django/template/base.py" in render 
    992.     bit = node.render_annotated(context) 

File "/Users/user/my_django_project/myvenv/lib/python2.7/site-packages/django/template/base.py" in render_annotated 
    959.    return self.render(context) 

File "/Users/user/my_django_project/myvenv/lib/python2.7/site-packages/django/template/defaulttags.py" in render 
    326.     return nodelist.render(context) 

File "/Users/user/my_django_project/myvenv/lib/python2.7/site-packages/django/template/base.py" in render 
    992.     bit = node.render_annotated(context) 

File "/Users/user/my_django_project/myvenv/lib/python2.7/site-packages/django/template/base.py" in render_annotated 
    959.    return self.render(context) 

File "/Users/user/my_django_project/myvenv/lib/python2.7/site-packages/django/template/base.py" in render 
    1043.    output = self.filter_expression.resolve(context) 

File "/Users/user/my_django_project/myvenv/lib/python2.7/site-packages/django/template/base.py" in resolve 
    736.     new_obj = func(obj, *arg_vals) 

File "/Users/user/my_django_project/myvenv/lib/python2.7/site-packages/django/template/defaultfilters.py" in _dec 
    47.    args[0] = force_text(args[0]) 

File "/Users/user/my_django_project/myvenv/lib/python2.7/site-packages/django/utils/encoding.py" in force_text 
    80.     s = six.text_type(bytes(s), encoding, errors) 

Exception Type: UnicodeEncodeError at /admin/myapp/content/40/change/ 
Exception Value: 'ascii' codec can't encode character u'\u2019' in position 5: ordinal not in range(128) 

Answer 1

Die Ausnahme zeigt, dass der Fehler durch die Admin-Vorlage geworfen versucht, Ihr Objekt in eine Zeichenfolge zu konvertieren:

{{ original|truncatewords:"18" }} 

(ab Zeile 21 der die Admin-Vorlage). original ist das Objekt, das bearbeitet wird.

Sie verwenden Python 2, so stellen Sie sicher, dass Ihr Modell eine richtige __unicode__ Methode implementiert ein unicode Objekt zurückkehrt (so nicht codiert). Wenn Sie stattdessen eine __str__-Methode verwenden, die immer noch unicode zurückgibt, werden Sie sicherlich auf die obige Ausnahme stoßen; __str__ sollte nur in Python 3-Code verwendet werden. Alternativ fügen Sie python_2_unicode_compatible() decorator hinzu und verwenden Sie __str__, siehe __str__ method documentation.