Ajoutez des fichiers projet.
This commit is contained in:
Ambulance Clerc
279
venv/Lib/site-packages/django/views/generic/edit.py
Normal file
279
venv/Lib/site-packages/django/views/generic/edit.py
Normal file
@@ -0,0 +1,279 @@
|
||||
import warnings
|
||||
|
||||
from django.core.exceptions import ImproperlyConfigured
|
||||
from django.forms import Form, models as model_forms
|
||||
from django.http import HttpResponseRedirect
|
||||
from django.views.generic.base import ContextMixin, TemplateResponseMixin, View
|
||||
from django.views.generic.detail import (
|
||||
BaseDetailView, SingleObjectMixin, SingleObjectTemplateResponseMixin,
|
||||
)
|
||||
|
||||
|
||||
class FormMixin(ContextMixin):
|
||||
"""Provide a way to show and handle a form in a request."""
|
||||
initial = {}
|
||||
form_class = None
|
||||
success_url = None
|
||||
prefix = None
|
||||
|
||||
def get_initial(self):
|
||||
"""Return the initial data to use for forms on this view."""
|
||||
return self.initial.copy()
|
||||
|
||||
def get_prefix(self):
|
||||
"""Return the prefix to use for forms."""
|
||||
return self.prefix
|
||||
|
||||
def get_form_class(self):
|
||||
"""Return the form class to use."""
|
||||
return self.form_class
|
||||
|
||||
def get_form(self, form_class=None):
|
||||
"""Return an instance of the form to be used in this view."""
|
||||
if form_class is None:
|
||||
form_class = self.get_form_class()
|
||||
return form_class(**self.get_form_kwargs())
|
||||
|
||||
def get_form_kwargs(self):
|
||||
"""Return the keyword arguments for instantiating the form."""
|
||||
kwargs = {
|
||||
'initial': self.get_initial(),
|
||||
'prefix': self.get_prefix(),
|
||||
}
|
||||
|
||||
if self.request.method in ('POST', 'PUT'):
|
||||
kwargs.update({
|
||||
'data': self.request.POST,
|
||||
'files': self.request.FILES,
|
||||
})
|
||||
return kwargs
|
||||
|
||||
def get_success_url(self):
|
||||
"""Return the URL to redirect to after processing a valid form."""
|
||||
if not self.success_url:
|
||||
raise ImproperlyConfigured("No URL to redirect to. Provide a success_url.")
|
||||
return str(self.success_url) # success_url may be lazy
|
||||
|
||||
def form_valid(self, form):
|
||||
"""If the form is valid, redirect to the supplied URL."""
|
||||
return HttpResponseRedirect(self.get_success_url())
|
||||
|
||||
def form_invalid(self, form):
|
||||
"""If the form is invalid, render the invalid form."""
|
||||
return self.render_to_response(self.get_context_data(form=form))
|
||||
|
||||
def get_context_data(self, **kwargs):
|
||||
"""Insert the form into the context dict."""
|
||||
if 'form' not in kwargs:
|
||||
kwargs['form'] = self.get_form()
|
||||
return super().get_context_data(**kwargs)
|
||||
|
||||
|
||||
class ModelFormMixin(FormMixin, SingleObjectMixin):
|
||||
"""Provide a way to show and handle a ModelForm in a request."""
|
||||
fields = None
|
||||
|
||||
def get_form_class(self):
|
||||
"""Return the form class to use in this view."""
|
||||
if self.fields is not None and self.form_class:
|
||||
raise ImproperlyConfigured(
|
||||
"Specifying both 'fields' and 'form_class' is not permitted."
|
||||
)
|
||||
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 getattr(self, 'object', None) 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
|
||||
|
||||
if self.fields is None:
|
||||
raise ImproperlyConfigured(
|
||||
"Using ModelFormMixin (base class of %s) without "
|
||||
"the 'fields' attribute is prohibited." % self.__class__.__name__
|
||||
)
|
||||
|
||||
return model_forms.modelform_factory(model, fields=self.fields)
|
||||
|
||||
def get_form_kwargs(self):
|
||||
"""Return the keyword arguments for instantiating the form."""
|
||||
kwargs = super().get_form_kwargs()
|
||||
if hasattr(self, 'object'):
|
||||
kwargs.update({'instance': self.object})
|
||||
return kwargs
|
||||
|
||||
def get_success_url(self):
|
||||
"""Return the URL to redirect to after processing a valid form."""
|
||||
if self.success_url:
|
||||
url = self.success_url.format(**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
|
||||
|
||||
def form_valid(self, form):
|
||||
"""If the form is valid, save the associated model."""
|
||||
self.object = form.save()
|
||||
return super().form_valid(form)
|
||||
|
||||
|
||||
class ProcessFormView(View):
|
||||
"""Render a form on GET and processes it on POST."""
|
||||
def get(self, request, *args, **kwargs):
|
||||
"""Handle GET requests: instantiate a blank version of the form."""
|
||||
return self.render_to_response(self.get_context_data())
|
||||
|
||||
def post(self, request, *args, **kwargs):
|
||||
"""
|
||||
Handle POST requests: instantiate a form instance with the passed
|
||||
POST variables and then check if it's valid.
|
||||
"""
|
||||
form = self.get_form()
|
||||
if form.is_valid():
|
||||
return self.form_valid(form)
|
||||
else:
|
||||
return self.form_invalid(form)
|
||||
|
||||
# PUT is a valid HTTP verb for creating (with a known URL) or editing an
|
||||
# object, note that browsers only support POST for now.
|
||||
def put(self, *args, **kwargs):
|
||||
return self.post(*args, **kwargs)
|
||||
|
||||
|
||||
class BaseFormView(FormMixin, ProcessFormView):
|
||||
"""A base view for displaying a form."""
|
||||
|
||||
|
||||
class FormView(TemplateResponseMixin, BaseFormView):
|
||||
"""A view for displaying a form and rendering a template response."""
|
||||
|
||||
|
||||
class BaseCreateView(ModelFormMixin, ProcessFormView):
|
||||
"""
|
||||
Base view for creating a new object instance.
|
||||
|
||||
Using this base class requires subclassing to provide a response mixin.
|
||||
"""
|
||||
def get(self, request, *args, **kwargs):
|
||||
self.object = None
|
||||
return super().get(request, *args, **kwargs)
|
||||
|
||||
def post(self, request, *args, **kwargs):
|
||||
self.object = None
|
||||
return super().post(request, *args, **kwargs)
|
||||
|
||||
|
||||
class CreateView(SingleObjectTemplateResponseMixin, BaseCreateView):
|
||||
"""
|
||||
View for creating a new object, with a response rendered by a template.
|
||||
"""
|
||||
template_name_suffix = '_form'
|
||||
|
||||
|
||||
class BaseUpdateView(ModelFormMixin, ProcessFormView):
|
||||
"""
|
||||
Base view for updating an existing object.
|
||||
|
||||
Using this base class requires subclassing to provide a response mixin.
|
||||
"""
|
||||
def get(self, request, *args, **kwargs):
|
||||
self.object = self.get_object()
|
||||
return super().get(request, *args, **kwargs)
|
||||
|
||||
def post(self, request, *args, **kwargs):
|
||||
self.object = self.get_object()
|
||||
return super().post(request, *args, **kwargs)
|
||||
|
||||
|
||||
class UpdateView(SingleObjectTemplateResponseMixin, BaseUpdateView):
|
||||
"""View for updating an object, with a response rendered by a template."""
|
||||
template_name_suffix = '_form'
|
||||
|
||||
|
||||
class DeletionMixin:
|
||||
"""Provide the ability to delete objects."""
|
||||
success_url = None
|
||||
|
||||
def delete(self, request, *args, **kwargs):
|
||||
"""
|
||||
Call the delete() method on the fetched object and then redirect to the
|
||||
success URL.
|
||||
"""
|
||||
self.object = self.get_object()
|
||||
success_url = self.get_success_url()
|
||||
self.object.delete()
|
||||
return HttpResponseRedirect(success_url)
|
||||
|
||||
# Add support for browsers which only accept GET and POST for now.
|
||||
def post(self, request, *args, **kwargs):
|
||||
return self.delete(request, *args, **kwargs)
|
||||
|
||||
def get_success_url(self):
|
||||
if self.success_url:
|
||||
return self.success_url.format(**self.object.__dict__)
|
||||
else:
|
||||
raise ImproperlyConfigured(
|
||||
"No URL to redirect to. Provide a success_url.")
|
||||
|
||||
|
||||
# RemovedInDjango50Warning.
|
||||
class DeleteViewCustomDeleteWarning(Warning):
|
||||
pass
|
||||
|
||||
|
||||
class BaseDeleteView(DeletionMixin, FormMixin, BaseDetailView):
|
||||
"""
|
||||
Base view for deleting an object.
|
||||
|
||||
Using this base class requires subclassing to provide a response mixin.
|
||||
"""
|
||||
form_class = Form
|
||||
|
||||
def __init__(self, *args, **kwargs):
|
||||
# RemovedInDjango50Warning.
|
||||
if self.__class__.delete is not DeletionMixin.delete:
|
||||
warnings.warn(
|
||||
f'DeleteView uses FormMixin to handle POST requests. As a '
|
||||
f'consequence, any custom deletion logic in '
|
||||
f'{self.__class__.__name__}.delete() handler should be moved '
|
||||
f'to form_valid().',
|
||||
DeleteViewCustomDeleteWarning,
|
||||
stacklevel=2,
|
||||
)
|
||||
super().__init__(*args, **kwargs)
|
||||
|
||||
def post(self, request, *args, **kwargs):
|
||||
# Set self.object before the usual form processing flow.
|
||||
# Inlined because having DeletionMixin as the first base, for
|
||||
# get_success_url(), makes leveraging super() with ProcessFormView
|
||||
# overly complex.
|
||||
self.object = self.get_object()
|
||||
form = self.get_form()
|
||||
if form.is_valid():
|
||||
return self.form_valid(form)
|
||||
else:
|
||||
return self.form_invalid(form)
|
||||
|
||||
def form_valid(self, form):
|
||||
success_url = self.get_success_url()
|
||||
self.object.delete()
|
||||
return HttpResponseRedirect(success_url)
|
||||
|
||||
|
||||
class DeleteView(SingleObjectTemplateResponseMixin, BaseDeleteView):
|
||||
"""
|
||||
View for deleting an object retrieved with self.get_object(), with a
|
||||
response rendered by a template.
|
||||
"""
|
||||
template_name_suffix = '_confirm_delete'
|
||||
Reference in New Issue
Block a user