我是Django的新手。我知道我们之前有过这个话题，但我在研究中找不到解决方案。
我只想用一个表格发布一个简单的待办事项，但出于某种原因，我得到了这个类型错误：“/ todo / add / expected string或type-like object 的TypeError”
希望你们能发现我的错误。
型号：
from django.db import models
from datetime import*
import time
from django.utils.timesince import timesince
from django.urls import*
class Task(models.Model):
task_title = models.CharField(max_length=50)
complete = models.BooleanField(default=False)
def get_absolute_url(self):
return reverse('todo:detail', kwargs={'pk':self.pk})
def __str__(self):
return self.task_title
表格：
from django import forms
class TodoForm(forms.Form):
task_title = forms.CharField(max_length=50,
widget=forms.TextInput(attrs{'class':'formcontrol','placeholder': 'Enter todo e.g. Delete junk files', 'aria-label' : 'Todo',
'aria-describedby' : 'add-btn'}))
视图：
@require_POST
def addTodo(request):
form = TodoForm(request.POST)
print(form.errors)
print(request.POST['task_title'])
if request.method == 'POST':
if form.is_valid():
new_todo = Task(task_title=request.POST['task_title'])
new_todo.save()
print('DONE')
return redirect('index')
网址：
from django.conf.urls import url
from django.urls import path
from . import views
urlpatterns = [
# match list,
url(r'^$', views.index, name='index'),
url(r'^add/$', views.addTodo, name='add'),
# match id goes to detail view
url(r'^(?P<pk>[0-9]+)/$', views.DetailView.as_view(), name='detail'),
]
模板：
<div class="sidebar">
<form action="{% url 'add' %}" method="POST" role="form">
{% csrf_token %}
<div class="form-group">
<div class="input-group">
{{ form.errors }}
{{ form.task_title }}
<span class="input-group-btn">
<button type="submit" class="btn btn-default"id="add-btn">ADD</button>
</span>
</div>
</div>
</form>
</div>
追溯：
vironment:
Request Method: POST
Request URL: http://127.0.0.1:8000/todo/add/
Django Version: 2.0
Python Version: 3.6.4
Installed Applications:
['todo',
'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']
Traceback:
File "C:\Users\Maxim Perl\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\core\handlers\exception.py" in inner
35. response = get_response(request)
File "C:\Users\Maxim Perl\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\core\handlers\base.py" in _get_response
128. response = self.process_exception_by_middleware(e, request)
File "C:\Users\Maxim Perl\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\core\handlers\base.py" in _get_response
126. response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "C:\Users\Maxim Perl\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\views\decorators\http.py" in inner
40. return func(request, *args, **kwargs)
File "C:\Users\Maxim Perl\PycharmProjects\Sloth\todo\views.py" in addTodo
49. new_todo.save()
File "C:\Users\Maxim Perl\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\db\models\base.py" in save
729. force_update=force_update, update_fields=update_fields)
File "C:\Users\Maxim Perl\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\db\models\base.py" in save_base
759. updated = self._save_table(raw, cls, force_insert, force_update, using, update_fields)
File "C:\Users\Maxim Perl\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\db\models\base.py" in _save_table
842. result = self._do_insert(cls._base_manager, using, fields, update_pk, raw)
File "C:\Users\Maxim Perl\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\db\models\base.py" in _do_insert
880. using=using, raw=raw)
File "C:\Users\Maxim Perl\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\db\models\manager.py" in manager_method
82. return getattr(self.get_queryset(), name)(*args, **kwargs)
File "C:\Users\Maxim Perl\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\db\models\query.py" in _insert
1125. return query.get_compiler(using=using).execute_sql(return_id)
File "C:\Users\Maxim Perl\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\db\models\sql\compiler.py" in execute_sql
1279. for sql, params in self.as_sql():
File "C:\Users\Maxim Perl\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\db\models\sql\compiler.py" in as_sql
1232. for obj in self.query.objs
File "C:\Users\Maxim Perl\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\db\models\sql\compiler.py" in <listcomp>
1232. for obj in self.query.objs
File "C:\Users\Maxim Perl\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\db\models\sql\compiler.py" in <listcomp>
1231. [self.prepare_value(field, self.pre_save_val(field, obj)) for field in fields]
File "C:\Users\Maxim Perl\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\db\models\sql\compiler.py" in prepare_value
1171. value = field.get_db_prep_save(value, connection=self.connection)
File "C:\Users\Maxim Perl\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\db\models\fields\__init__.py" in get_db_prep_save
767. return self.get_db_prep_value(value, connection=connection, prepared=False)
File "C:\Users\Maxim Perl\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\db\models\fields\__init__.py" in get_db_prep_value
2248. value = self.get_prep_value(value)
File "C:\Users\Maxim Perl\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\db\models\fields\__init__.py" in get_prep_value
2243. return self.to_python(value)
File "C:\Users\Maxim Perl\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\db\models\fields\__init__.py" in to_python
2217. parsed = parse_time(value)
File "C:\Users\Maxim Perl\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\utils\dateparse.py" in parse_time
89. match = time_re.match(value)
Exception Type: TypeError at /todo/add/
Exception Value: expected string or bytes-like object