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django 模板视图,表单视图,各种视图

时间:2015-04-17 编辑:白云辉 来源:本站整理

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

Note

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

from django.core.urlresolvers import reverse
from django.db import models

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(ContactView, self).form_valid(form)

Example myapp/contact.html:

<form action="" 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

Attributes

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

Attributes

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 action="" 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

Attributes

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

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

Example myapp/author_confirm_delete.html:

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