class UpdateView

from django.views.generic import UpdateView
View for updating an object,
with a response rendered by template.

Attributes

  Defined in
content_type = None TemplateResponseMixin
context_object_name = None SingleObjectMixin
form_class = None FormMixin
http_method_names = [u'get', u'post', u'put', u'delete', u'head', u'options', u'trace'] View
initial = {} FormMixin
model = None SingleObjectMixin
pk_url_kwarg = 'pk' SingleObjectMixin
queryset = None SingleObjectMixin
response_class = <class 'django.template.response.TemplateResponse'> TemplateResponseMixin
slug_field = 'slug' SingleObjectMixin
slug_url_kwarg = 'slug' SingleObjectMixin
success_url = None FormMixin
template_name = None TemplateResponseMixin
template_name_field = None SingleObjectTemplateResponseMixin
template_name_suffix = '_detail' SingleObjectTemplateResponseMixin
template_name_suffix = '_form' UpdateView
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Methods

def _allowed_methods(self): View

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def _allowed_methods(self):
    return [m.upper() for m in self.http_method_names if hasattr(self, m)]

def as_view(cls, **initkwargs): View

Main entry point for a request-response process.
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@classonlymethod
def as_view(cls, **initkwargs):
    """
    Main entry point for a request-response process.
    """
    # sanitize keyword arguments
    for key in initkwargs:
        if key in cls.http_method_names:
            raise TypeError("You tried to pass in the %s method name as a "
                            "keyword argument to %s(). Don't do that."
                            % (key, cls.__name__))
        if not hasattr(cls, key):
            raise TypeError("%s() received an invalid keyword %r. as_view "
                            "only accepts arguments that are already "
                            "attributes of the class." % (cls.__name__, key))
    def view(request, *args, **kwargs):
        self = cls(**initkwargs)
        if hasattr(self, 'get') and not hasattr(self, 'head'):
            self.head = self.get
        self.request = request
        self.args = args
        self.kwargs = kwargs
        return self.dispatch(request, *args, **kwargs)
    # take name and docstring from class
    update_wrapper(view, cls, updated=())
    # and possible attributes set by decorators
    # like csrf_exempt from dispatch
    update_wrapper(view, cls.dispatch, assigned=())
    return view

def dispatch(self, request, *args, **kwargs): View

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def dispatch(self, request, *args, **kwargs):
    # Try to dispatch to the right method; if a method doesn't exist,
    # defer to the error handler. Also defer to the error handler if the
    # request method isn't on the approved list.
    if request.method.lower() in self.http_method_names:
        handler = getattr(self, request.method.lower(), self.http_method_not_allowed)
    else:
        handler = self.http_method_not_allowed
    return handler(request, *args, **kwargs)

def form_invalid(self, form): FormMixin

If the form is invalid, re-render the context data with the
data-filled form and errors.
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def form_invalid(self, form):
    """
    If the form is invalid, re-render the context data with the
    data-filled form and errors.
    """
    return self.render_to_response(self.get_context_data(form=form))

def form_valid(self, form):

ModelFormMixin

If the form is valid, save the associated model.
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def form_valid(self, form):
    """
    If the form is valid, save the associated model.
    """
    self.object = form.save()
    return super(ModelFormMixin, self).form_valid(form)

FormMixin

If the form is valid, redirect to the supplied URL.
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def form_valid(self, form):
    """
    If the form is valid, redirect to the supplied URL.
    """
    return HttpResponseRedirect(self.get_success_url())

def get(self, request, *args, **kwargs):

BaseUpdateView

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def get(self, request, *args, **kwargs):
    self.object = self.get_object()
    return super(BaseUpdateView, self).get(request, *args, **kwargs)

ProcessFormView

Handles GET requests and instantiates a blank version of the form.
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def get(self, request, *args, **kwargs):
    """
    Handles GET requests and instantiates a blank version of the form.
    """
    form_class = self.get_form_class()
    form = self.get_form(form_class)
    return self.render_to_response(self.get_context_data(form=form))

def get_context_data(self, **kwargs):

ModelFormMixin

If an object has been supplied, inject it into the context with the
supplied context_object_name name.
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def get_context_data(self, **kwargs):
    """
    If an object has been supplied, inject it into the context with the
    supplied context_object_name name.
    """
    context = {}
    if self.object:
        context['object'] = self.object
        context_object_name = self.get_context_object_name(self.object)
        if context_object_name:
            context[context_object_name] = self.object
    context.update(kwargs)
    return super(ModelFormMixin, self).get_context_data(**context)

SingleObjectMixin

Insert the single object into the context dict.
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def get_context_data(self, **kwargs):
    """
    Insert the single object into the context dict.
    """
    context = {}
    context_object_name = self.get_context_object_name(self.object)
    if context_object_name:
        context[context_object_name] = self.object
    context.update(kwargs)
    return super(SingleObjectMixin, self).get_context_data(**context)

ContextMixin

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def get_context_data(self, **kwargs):
    if 'view' not in kwargs:
        kwargs['view'] = self
    return kwargs

def get_context_object_name(self, obj): SingleObjectMixin

Get the name to use for the object.
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def get_context_object_name(self, obj):
    """
    Get the name to use for the object.
    """
    if self.context_object_name:
        return self.context_object_name
    elif isinstance(obj, models.Model):
        return obj._meta.object_name.lower()
    else:
        return None

def get_form(self, form_class): FormMixin

Returns an instance of the form to be used in this view.
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def get_form(self, form_class):
    """
    Returns an instance of the form to be used in this view.
    """
    return form_class(**self.get_form_kwargs())

def get_form_class(self):

ModelFormMixin

Returns the form class to use in this view.
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def get_form_class(self):
    """
    Returns the form class to use in this view.
    """
    if self.form_class:
        return self.form_class
    else:
        if self.model is not None:
            # If a model has been explicitly provided, use it
            model = self.model
        elif hasattr(self, 'object') and self.object is not None:
            # If this view is operating on a single object, use
            # the class of that object
            model = self.object.__class__
        else:
            # Try to get a queryset and extract the model class
            # from that
            model = self.get_queryset().model
        return model_forms.modelform_factory(model)

FormMixin

Returns the form class to use in this view
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def get_form_class(self):
    """
    Returns the form class to use in this view
    """
    return self.form_class

def get_form_kwargs(self):

ModelFormMixin

Returns the keyword arguments for instantiating the form.
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def get_form_kwargs(self):
    """
    Returns the keyword arguments for instantiating the form.
    """
    kwargs = super(ModelFormMixin, self).get_form_kwargs()
    kwargs.update({'instance': self.object})
    return kwargs

FormMixin

Returns the keyword arguments for instantiating the form.
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def get_form_kwargs(self):
    """
    Returns the keyword arguments for instantiating the form.
    """
    kwargs = {'initial': self.get_initial()}
    if self.request.method in ('POST', 'PUT'):
        kwargs.update({
            'data': self.request.POST,
            'files': self.request.FILES,
        })
    return kwargs

def get_initial(self): FormMixin

Returns the initial data to use for forms on this view.
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def get_initial(self):
    """
    Returns the initial data to use for forms on this view.
    """
    return self.initial.copy()

def get_object(self, queryset=None): SingleObjectMixin

Returns the object the view is displaying.

By default this requires `self.queryset` and a `pk` or `slug` argument
in the URLconf, but subclasses can override this to return any object.
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def get_object(self, queryset=None):
    """
    Returns the object the view is displaying.
    By default this requires `self.queryset` and a `pk` or `slug` argument
    in the URLconf, but subclasses can override this to return any object.
    """
    # Use a custom queryset if provided; this is required for subclasses
    # like DateDetailView
    if queryset is None:
        queryset = self.get_queryset()
    # Next, try looking up by primary key.
    pk = self.kwargs.get(self.pk_url_kwarg, None)
    slug = self.kwargs.get(self.slug_url_kwarg, None)
    if pk is not None:
        queryset = queryset.filter(pk=pk)
    # Next, try looking up by slug.
    elif slug is not None:
        slug_field = self.get_slug_field()
        queryset = queryset.filter(**{slug_field: slug})
    # If none of those are defined, it's an error.
    else:
        raise AttributeError("Generic detail view %s must be called with "
                             "either an object pk or a slug."
                             % self.__class__.__name__)
    try:
        # Get the single item from the filtered queryset
        obj = queryset.get()
    except ObjectDoesNotExist:
        raise Http404(_("No %(verbose_name)s found matching the query") %
                      {'verbose_name': queryset.model._meta.verbose_name})
    return obj

def get_queryset(self): SingleObjectMixin

Get the queryset to look an object up against. May not be called if
`get_object` is overridden.
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def get_queryset(self):
    """
    Get the queryset to look an object up against. May not be called if
    `get_object` is overridden.
    """
    if self.queryset is None:
        if self.model:
            return self.model._default_manager.all()
        else:
            raise ImproperlyConfigured("%(cls)s is missing a queryset. Define "
                                       "%(cls)s.model, %(cls)s.queryset, or override "
                                       "%(cls)s.get_queryset()." % {
                                            'cls': self.__class__.__name__
                                    })
    return self.queryset._clone()

def get_slug_field(self): SingleObjectMixin

Get the name of a slug field to be used to look up by slug.
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def get_slug_field(self):
    """
    Get the name of a slug field to be used to look up by slug.
    """
    return self.slug_field

def get_success_url(self):

ModelFormMixin

Returns the supplied URL.
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def get_success_url(self):
    """
    Returns the supplied URL.
    """
    if self.success_url:
        url = self.success_url % self.object.__dict__
    else:
        try:
            url = self.object.get_absolute_url()
        except AttributeError:
            raise ImproperlyConfigured(
                "No URL to redirect to.  Either provide a url or define"
                " a get_absolute_url method on the Model.")
    return url

FormMixin

Returns the supplied success URL.
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def get_success_url(self):
    """
    Returns the supplied success URL.
    """
    if self.success_url:
        # Forcing possible reverse_lazy evaluation
        url = force_text(self.success_url)
    else:
        raise ImproperlyConfigured(
            "No URL to redirect to. Provide a success_url.")
    return url

def get_template_names(self):

SingleObjectTemplateResponseMixin

Return a list of template names to be used for the request. May not be
called if render_to_response is overridden. Returns the following list:

* the value of ``template_name`` on the view (if provided)
* the contents of the ``template_name_field`` field on the
  object instance that the view is operating upon (if available)
* ``<app_label>/<object_name><template_name_suffix>.html``        
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def get_template_names(self):
    """
    Return a list of template names to be used for the request. May not be
    called if render_to_response is overridden. Returns the following list:
    * the value of ``template_name`` on the view (if provided)
    * the contents of the ``template_name_field`` field on the
      object instance that the view is operating upon (if available)
    * ``<app_label>/<object_name><template_name_suffix>.html``        
    """
    try:
        names = super(SingleObjectTemplateResponseMixin, self).get_template_names()
    except ImproperlyConfigured:
        # If template_name isn't specified, it's not a problem --
        # we just start with an empty list.
        names = []
    # If self.template_name_field is set, grab the value of the field
    # of that name from the object; this is the most specific template
    # name, if given.
    if self.object and self.template_name_field:
        name = getattr(self.object, self.template_name_field, None)
        if name:
            names.insert(0, name)
    # The least-specific option is the default <app>/<model>_detail.html;
    # only use this if the object in question is a model.
    if isinstance(self.object, models.Model):
        names.append("%s/%s%s.html" % (
            self.object._meta.app_label,
            self.object._meta.object_name.lower(),
            self.template_name_suffix
        ))
    elif hasattr(self, 'model') and self.model is not None and issubclass(self.model, models.Model):
        names.append("%s/%s%s.html" % (
            self.model._meta.app_label,
            self.model._meta.object_name.lower(),
            self.template_name_suffix
        ))
    return names

TemplateResponseMixin

Returns a list of template names to be used for the request. Must return
a list. May not be called if render_to_response is overridden.
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def get_template_names(self):
    """
    Returns a list of template names to be used for the request. Must return
    a list. May not be called if render_to_response is overridden.
    """
    if self.template_name is None:
        raise ImproperlyConfigured(
            "TemplateResponseMixin requires either a definition of "
            "'template_name' or an implementation of 'get_template_names()'")
    else:
        return [self.template_name]

def http_method_not_allowed(self, request, *args, **kwargs): View

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def http_method_not_allowed(self, request, *args, **kwargs):
    logger.warning('Method Not Allowed (%s): %s', request.method, request.path,
        extra={
            'status_code': 405,
            'request': self.request
        }
    )
    return http.HttpResponseNotAllowed(self._allowed_methods())

def __init__(self, **kwargs): View

Constructor. Called in the URLconf; can contain helpful extra
keyword arguments, and other things.
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def __init__(self, **kwargs):
    """
    Constructor. Called in the URLconf; can contain helpful extra
    keyword arguments, and other things.
    """
    # Go through keyword arguments, and either save their values to our
    # instance, or raise an error.
    for key, value in six.iteritems(kwargs):
        setattr(self, key, value)

def options(self, request, *args, **kwargs): View

Handles responding to requests for the OPTIONS HTTP verb.
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def options(self, request, *args, **kwargs):
    """
    Handles responding to requests for the OPTIONS HTTP verb.
    """
    response = http.HttpResponse()
    response['Allow'] = ', '.join(self._allowed_methods())
    response['Content-Length'] = '0'
    return response

def post(self, request, *args, **kwargs):

BaseUpdateView

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def post(self, request, *args, **kwargs):
    self.object = self.get_object()
    return super(BaseUpdateView, self).post(request, *args, **kwargs)

ProcessFormView

Handles POST requests, instantiating a form instance with the passed
POST variables and then checked for validity.
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def post(self, request, *args, **kwargs):
    """
    Handles POST requests, instantiating a form instance with the passed
    POST variables and then checked for validity.
    """
    form_class = self.get_form_class()
    form = self.get_form(form_class)
    if form.is_valid():
        return self.form_valid(form)
    else:
        return self.form_invalid(form)

def put(self, *args, **kwargs): ProcessFormView

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def put(self, *args, **kwargs):
    return self.post(*args, **kwargs)

def render_to_response(self, context, **response_kwargs): TemplateResponseMixin

Returns a response, using the `response_class` for this
view, with a template rendered with the given context.

If any keyword arguments are provided, they will be
passed to the constructor of the response class.
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def render_to_response(self, context, **response_kwargs):
    """
    Returns a response, using the `response_class` for this
    view, with a template rendered with the given context.
    If any keyword arguments are provided, they will be
    passed to the constructor of the response class.
    """
    response_kwargs.setdefault('content_type', self.content_type)
    return self.response_class(
        request = self.request,
        template = self.get_template_names(),
        context = context,
        **response_kwargs
    )