# Django 2.2.9.dev20191202104323 文档

# Generic editing views

The following views are described on this page and provide a foundation for editing content:

- `django.views.generic.edit.FormView`
- `django.views.generic.edit.CreateView`
- `django.views.generic.edit.UpdateView`
- `django.views.generic.edit.DeleteView`

参见

The messages framework contains `SuccessMessageMixin`, which facilitates presenting messages about successful form submissions.

注解

Some of the examples on this page assume that an `Author` model has been defined as follows in `myapp/models.py`:

    from django.db import models
    from django.urls import reverse

    class Author(models.Model):
        name = models.CharField(max_length=200)

        def get_absolute_url(self):
            return reverse('author-detail', kwargs={'pk': self.pk})

## `FormView`

class `django.views.generic.edit.``FormView`

  A view that displays a form. On error, redisplays the form with validation errors; on success, redirects to a new URL.

  Ancestors (MRO)

  This view inherits methods and attributes from the following views:

  - `django.views.generic.base.TemplateResponseMixin`
  - `django.views.generic.edit.BaseFormView`
  - `django.views.generic.edit.FormMixin`
  - `django.views.generic.edit.ProcessFormView`
  - `django.views.generic.base.View`

  Example myapp/forms.py:

      from django import forms

      class ContactForm(forms.Form):
          name = forms.CharField()
          message = forms.CharField(widget=forms.Textarea)

          def send_email(self):
              # send email using the self.cleaned_data dictionary
              pass

  Example myapp/views.py:

      from myapp.forms import ContactForm
      from django.views.generic.edit import FormView

      class ContactView(FormView):
          template_name = 'contact.html'
          form_class = ContactForm
          success_url = '/thanks/'

          def form_valid(self, form):
              # This method is called when valid form data has been POSTed.
              # It should return an HttpResponse.
              form.send_email()
              return super().form_valid(form)

  Example myapp/contact.html:

      <form method="post">{% csrf_token %}
          {{ form.as_p }}
          <input type="submit" value="Send message">
      </form>

## `CreateView`

class `django.views.generic.edit.``CreateView`

  A view that displays a form for creating an object, redisplaying the form with validation errors (if there are any) and saving the object.

  Ancestors (MRO)

  This view inherits methods and attributes from the following views:

  - `django.views.generic.detail.SingleObjectTemplateResponseMixin`
  - `django.views.generic.base.TemplateResponseMixin`
  - `django.views.generic.edit.BaseCreateView`
  - `django.views.generic.edit.ModelFormMixin`
  - `django.views.generic.edit.FormMixin`
  - `django.views.generic.detail.SingleObjectMixin`
  - `django.views.generic.edit.ProcessFormView`
  - `django.views.generic.base.View`

  属性

  `template_name_suffix`

    The `CreateView` page displayed to a `GET` request uses a `template_name_suffix` of `'_form'`. For example, changing this attribute to `'_create_form'` for a view creating objects for the example `Author` model would cause the default `template_name` to be `'myapp/author_create_form.html'`.

  `object`

    When using `CreateView` you have access to `self.object`, which is the object being created. If the object hasn't been created yet, the value will be `None`.

  Example myapp/views.py:

      from django.views.generic.edit import CreateView
      from myapp.models import Author

      class AuthorCreate(CreateView):
          model = Author
          fields = ['name']

  Example myapp/author_form.html:

      <form method="post">{% csrf_token %}
          {{ form.as_p }}
          <input type="submit" value="Save">
      </form>

## `UpdateView`

class `django.views.generic.edit.``UpdateView`

  A view that displays a form for editing an existing object, redisplaying the form with validation errors (if there are any) and saving changes to the object. This uses a form automatically generated from the object's model class (unless a form class is manually specified).

  Ancestors (MRO)

  This view inherits methods and attributes from the following views:

  - `django.views.generic.detail.SingleObjectTemplateResponseMixin`
  - `django.views.generic.base.TemplateResponseMixin`
  - `django.views.generic.edit.BaseUpdateView`
  - `django.views.generic.edit.ModelFormMixin`
  - `django.views.generic.edit.FormMixin`
  - `django.views.generic.detail.SingleObjectMixin`
  - `django.views.generic.edit.ProcessFormView`
  - `django.views.generic.base.View`

  属性

  `template_name_suffix`

    The `UpdateView` page displayed to a `GET` request uses a `template_name_suffix` of `'_form'`. For example, changing this attribute to `'_update_form'` for a view updating objects for the example `Author` model would cause the default `template_name` to be `'myapp/author_update_form.html'`.

  `object`

    When using `UpdateView` you have access to `self.object`, which is the object being updated.

  Example myapp/views.py:

      from django.views.generic.edit import UpdateView
      from myapp.models import Author

      class AuthorUpdate(UpdateView):
          model = Author
          fields = ['name']
          template_name_suffix = '_update_form'

  Example myapp/author_update_form.html:

      <form method="post">{% csrf_token %}
          {{ form.as_p }}
          <input type="submit" value="Update">
      </form>

## `DeleteView`

class `django.views.generic.edit.``DeleteView`

  A view that displays a confirmation page and deletes an existing object. The given object will only be deleted if the request method is `POST`. If this view is fetched via `GET`, it will display a confirmation page that should contain a form that POSTs to the same URL.

  Ancestors (MRO)

  This view inherits methods and attributes from the following views:

  - `django.views.generic.detail.SingleObjectTemplateResponseMixin`
  - `django.views.generic.base.TemplateResponseMixin`
  - `django.views.generic.edit.BaseDeleteView`
  - `django.views.generic.edit.DeletionMixin`
  - `django.views.generic.detail.BaseDetailView`
  - `django.views.generic.detail.SingleObjectMixin`
  - `django.views.generic.base.View`

  属性

  `template_name_suffix`

    The `DeleteView` page displayed to a `GET` request uses a `template_name_suffix` of `'_confirm_delete'`. For example, changing this attribute to `'_check_delete'` for a view deleting objects for the example `Author` model would cause the default `template_name` to be `'myapp/author_check_delete.html'`.

  Example myapp/views.py:

      from django.urls import reverse_lazy
      from django.views.generic.edit import DeleteView
      from myapp.models import Author

      class AuthorDelete(DeleteView):
          model = Author
          success_url = reverse_lazy('author-list')

  Example myapp/author_confirm_delete.html:

      <form method="post">{% csrf_token %}
          <p>Are you sure you want to delete "{{ object }}"?</p>
          <input type="submit" value="Confirm">
      </form>