Fungsi jalan pintas DjangoLink to this heading

The package django.shortcuts collects helper functions and classes that "span" multiple levels of MVC. In other words, these functions/classes introduce controlled coupling for convenience's sake.

render()Link to this heading

render(request, template_name, context=None, context_instance=_context_instance_undefined, content_type=None, status=None, current_app=_current_app_undefined, dirs=_dirs_undefined, using=None)Link to this definition

Combines a given template with a given context dictionary and returns an HttpResponse object with that rendered text.

Django does not provide a shortcut function which returns a TemplateResponse because the constructor of TemplateResponse offers the same level of convenience as render().

Argumen dibutuhkanLink to this heading

request

The request object used to generate this response.

template_name

The full name of a template to use or sequence of template names. If a sequence is given, the first template that exists will be used. See the template loading documentation for more information on how templates are found.

Argumen pilihanLink to this heading

context

A dictionary of values to add to the template context. By default, this is an empty dictionary. If a value in the dictionary is callable, the view will call it just before rendering the template.

context_instance

The context instance to render the template with. By default, the template will be rendered with a RequestContext instance (filled with values from request and context).

content_type

The MIME type to use for the resulting document. Defaults to the value of the DEFAULT_CONTENT_TYPE setting.

status

The status code for the response. Defaults to 200.

current_app

A hint indicating which application contains the current view. See the namespaced URL resolution strategy for more information.

using

The NAME of a template engine to use for loading the template.

ContohLink to this heading

The following example renders the template myapp/index.html with the MIME type application/xhtml+xml:

Code
from django.shortcuts import render

def my_view(request):
    # View code here...
    return render(request, 'myapp/index.html', {
        'foo': 'bar',
    }, content_type='application/xhtml+xml')

Contoh ini setara pada:

Code
from django.http import HttpResponse
from django.template import loader

def my_view(request):
    # View code here...
    t = loader.get_template('myapp/index.html')
    c = {'foo': 'bar'}
    return HttpResponse(t.render(c, request), content_type='application/xhtml+xml')

render_to_response()Link to this heading

render_to_response(template_name, context=None, context_instance=_context_instance_undefined, content_type=None, status=None, dirs=_dirs_undefined, using=None)Link to this definition

This function preceded the introduction of render() and works similarly except that it doesn't make the request available in the response. It's not recommended and is likely to be deprecated in the future.

Argumen dibutuhkanLink to this heading

template_name

The full name of a template to use or sequence of template names. If a sequence is given, the first template that exists will be used. See the template loading documentation for more information on how templates are found.

Argumen pilihanLink to this heading

context

A dictionary of values to add to the template context. By default, this is an empty dictionary. If a value in the dictionary is callable, the view will call it just before rendering the template.

context_instance

The context instance to render the template with. By default, the template will be rendered with a Context instance (filled with values from context). If you need to use context processors, render the template with a RequestContext instance instead. Your code might look something like this:

Code
return render_to_response('my_template.html',
                          my_context,
                          context_instance=RequestContext(request))
content_type

The MIME type to use for the resulting document. Defaults to the value of the DEFAULT_CONTENT_TYPE setting.

status

The status code for the response. Defaults to 200.

using

The NAME of a template engine to use for loading the template.

redirect()Link to this heading

redirect(to, permanent=False, *args, **kwargs)Link to this definition

Returns an HttpResponseRedirect to the appropriate URL for the arguments passed.

Argumen dapat menjadi:

  • A model: the model's get_absolute_url() function will be called.

  • A view name, possibly with arguments: urlresolvers.reverse will be used to reverse-resolve the name.

  • An absolute or relative URL, which will be used as-is for the redirect location.

By default issues a temporary redirect; pass permanent=True to issue a permanent redirect.

ContohLink to this heading

You can use the redirect() function in a number of ways.

  1. By passing some object; that object's get_absolute_url() method will be called to figure out the redirect URL:

    Code
    from django.shortcuts import redirect
    
    def my_view(request):
        ...
        object = MyModel.objects.get(...)
        return redirect(object)
    
  2. By passing the name of a view and optionally some positional or keyword arguments; the URL will be reverse resolved using the reverse() method:

    Code
    def my_view(request):
        ...
        return redirect('some-view-name', foo='bar')
    
  3. By passing a hardcoded URL to redirect to:

    Code
    def my_view(request):
        ...
        return redirect('/some/url/')
    

    Ini juga bekerja dengan URL penuh:

    Code
    def my_view(request):
        ...
        return redirect('https://example.com/')
    

By default, redirect() returns a temporary redirect. All of the above forms accept a permanent argument; if set to True a permanent redirect will be returned:

Code
def my_view(request):
    ...
    object = MyModel.objects.get(...)
    return redirect(object, permanent=True)

get_object_or_404()Link to this heading

get_object_or_404(klass, *args, **kwargs)Link to this definition

Calls get() on a given model manager, but it raises Http404 instead of the model's DoesNotExist exception.

Argumen dibutuhkanLink to this heading

klass

A Model class, a Manager, or a QuerySet instance from which to get the object.

**kwargs

Lookup parameters, which should be in the format accepted by get() and filter().

ContohLink to this heading

The following example gets the object with the primary key of 1 from MyModel:

Code
from django.shortcuts import get_object_or_404

def my_view(request):
    my_object = get_object_or_404(MyModel, pk=1)

Contoh ini setara pada:

Code
from django.http import Http404

def my_view(request):
    try:
        my_object = MyModel.objects.get(pk=1)
    except MyModel.DoesNotExist:
        raise Http404("No MyModel matches the given query.")

The most common use case is to pass a Model, as shown above. However, you can also pass a QuerySet instance:

Code
queryset = Book.objects.filter(title__startswith='M')
get_object_or_404(queryset, pk=1)

The above example is a bit contrived since it's equivalent to doing:

Code
get_object_or_404(Book, title__startswith='M', pk=1)

but it can be useful if you are passed the queryset variable from somewhere else.

Finally, you can also use a Manager. This is useful for example if you have a custom manager:

Code
get_object_or_404(Book.dahl_objects, title='Matilda')

Anda dapat juga menggunakan related managers:

Code
author = Author.objects.get(name='Roald Dahl')
get_object_or_404(author.book_set, title='Matilda')

Note: As with get(), a MultipleObjectsReturned exception will be raised if more than one object is found.

get_list_or_404()Link to this heading

get_list_or_404(klass, *args, **kwargs)Link to this definition

Returns the result of filter() on a given model manager cast to a list, raising Http404 if the resulting list is empty.

Argumen dibutuhkanLink to this heading

klass

A Model, Manager or QuerySet instance from which to get the list.

**kwargs

Lookup parameters, which should be in the format accepted by get() and filter().

ContohLink to this heading

The following example gets all published objects from MyModel:

Code
from django.shortcuts import get_list_or_404

def my_view(request):
    my_objects = get_list_or_404(MyModel, published=True)

Contoh ini setara pada:

Code
from django.http import Http404

def my_view(request):
    my_objects = list(MyModel.objects.filter(published=True))
    if not my_objects:
        raise Http404("No MyModel matches the given query.")