姜戈 form.save()

Question

我在 Django 中使用 CRUD 时遇到了一些问题。我无法将对象添加到数据库。

文件views.py

@login_required
def persons_add(request):
    form = forms.PersonForm(request.POST)
    if form.is_valid():
        form.save()
        return redirect('persons_list')
    context = {
        'form': form
    }
    return render(request, 'persons/persons_add.html', context)

文件form.html

<form role="form" method="POST" action="/persons/">
    {% csrf_token %}
    <table class="table table-bordered">
        {% for field in form.visible_fields %}
        <tr>
            <th>
                {{ field.label }}
            </th>
            <td>
                {{ field }}
            </td>
        </tr>
        {% endfor %}
    </table>
    <button type="submit" name="submit" class="btn btn-success">Add Person</button>
</form>

文件forms.py

from django import forms

from persons import models

class PersonForm (forms.ModelForm):
    class Meta:
        model = models.Person
        fields = ['name', 'surname']

文件person_list.html

<tbody>
    {% for person in persons_list %}
    <tr>
        <td>{{ person.name }}</td>
        <td>{{ person.surname }}</td>
        <td>
            <a href="{{ person.id }}/edit"
               <p data-placement="top" data-toggle="tooltip" title="Edit"><button class="btn btn-primary btn-xs" data-title="Edit" data-toggle="modal" data-target="#edit" ><span class="glyphicon glyphicon-pencil"></span></button></p>
            </a>
        </td>
        <td>
            <a href="{{ person.id }}/delete">
                <p data-placement="top" data-toggle="tooltip" title="Delete"><button class="btn btn-danger btn-xs" data-title="Delete" data-toggle="modal" data-target="#delete" ><span class="glyphicon glyphicon-trash"></span></button></p>
            </a>
        </td>
    </tr>
    {% endfor %}
</tbody>

文件urls.py（申请）

from django.conf.urls import patterns, include, url
from django.contrib import admin

from persons import views

urlpatterns = patterns('',
    #url(r'^$', views.PersonsView.as_view(), name='persons'),
    url(r'^$', views.persons_list, name='persons_list'),
    url(r'^add/', views.persons_add, name="persons_add"),
    url(r'^(?P<person_id>\d+)/edit/$', views.persons_edit, name="persons_edit"),
    url(r'^(?P<person_id>\d+)/delete/$', views.persons_delete, name="persons_delete"),
)

文件urls.py（主要项目）

from django.conf.urls import patterns, include, url
from django.contrib import admin
from hr import views

urlpatterns = patterns('',
    url(r'^persons/', include('persons.urls', namespace='persons')),
    url(r'^admin/', include(admin.site.urls)),
    url(r'^$', views.index, name='index'),
    url(r'^logout/$', 'django.contrib.auth.views.logout', {'template_name': 'login.html'}),
    url(r'^login/$', 'django.contrib.auth.views.login', {'template_name': 'login.html'}),
)

错误在哪里？为什么这里没有任何作用？为什么我不能将 POST 发送到数据库并添加 Person？

Answer 1

首先，你的views有错误。您需要在 GET request, and handle the form when it's POST:

上发送空表格

@login_required
def persons_add(request):
    # Check if it's POST request then handle the form
    if request.method == 'POST':
        form = forms.PersonForm(request.POST)
        if form.is_valid():
            form.save()
            return redirect('persons_list')
    else:
        # If not, you need an empty form for GET request
        form = forms.PersonForm()
    context = {
        'form': form
    }
    return render(request, 'persons/persons_add.html', context)

请先更正此问题，然后我们会再次检查您的位置，一次一个步骤。

检查您的 url 路线。您目前正在向 /persons/ 发帖。根据您的 url 建议更改为 /persons/add/。

此外，您的 urls.py 主文件有误。如果你想include应用urls.py，不要和你的主路由混在一起。像这样拆分它们：

主要urls.py文件：

urlpatterns = patterns('',
    url(r'^admin/', include(admin.site.urls)),
    url(r'^$', views.index, name='index'),
    url(r'^logout/$', 'django.contrib.auth.views.logout', {'template_name': 'login.html'}),
    url(r'^login/$', 'django.contrib.auth.views.login', {'template_name': 'login.html'}),
)

# Split your app URLs and using += patterns with their views
urlpatterns += patterns(
    'persons.views',
    (r'^persons/', include('persons.urls', namespace='persons')),
)

姜戈 form.save()

Django form.save()

python

django

django-forms