View System

class View:
    """
    Base class for all class-based views.
    
    Provides dispatch method routing and basic HTTP method handling.
    """
    http_method_names: list = ['get', 'post', 'put', 'patch', 'delete', 'head', 'options', 'trace']
    
    def __init__(self, **kwargs): ...
    
    @classmethod
    def as_view(cls, **initkwargs): ...
    
    def setup(self, request: HttpRequest, *args, **kwargs) -> None: ...
    def dispatch(self, request: HttpRequest, *args, **kwargs) -> HttpResponse: ...
    def http_method_not_allowed(self, request: HttpRequest, *args, **kwargs) -> HttpResponse: ...
    def options(self, request: HttpRequest, *args, **kwargs) -> HttpResponse: ...
    
    # HTTP method handlers
    def get(self, request: HttpRequest, *args, **kwargs) -> HttpResponse: ...
    def post(self, request: HttpRequest, *args, **kwargs) -> HttpResponse: ...
    def put(self, request: HttpRequest, *args, **kwargs) -> HttpResponse: ...
    def patch(self, request: HttpRequest, *args, **kwargs) -> HttpResponse: ...
    def delete(self, request: HttpRequest, *args, **kwargs) -> HttpResponse: ...
    def head(self, request: HttpRequest, *args, **kwargs) -> HttpResponse: ...
    def trace(self, request: HttpRequest, *args, **kwargs) -> HttpResponse: ...

class TemplateView(TemplateResponseMixin, ContextMixin, View):
    """
    Render a template with optional context data.
    
    Generic view for displaying templates with context.
    """
    def get(self, request: HttpRequest, *args, **kwargs) -> HttpResponse: ...
    def get_context_data(self, **kwargs) -> dict: ...

class RedirectView(View):
    """
    Redirect to a given URL or pattern name.
    
    Supports permanent redirects and URL pattern resolution.
    """
    permanent: bool = False
    url: str = None
    pattern_name: str = None
    query_string: bool = False
    
    def get_redirect_url(self, *args, **kwargs) -> str: ...
    def get(self, request: HttpRequest, *args, **kwargs) -> HttpResponse: ...
    def head(self, request: HttpRequest, *args, **kwargs) -> HttpResponse: ...
    def post(self, request: HttpRequest, *args, **kwargs) -> HttpResponse: ...
    def options(self, request: HttpRequest, *args, **kwargs) -> HttpResponse: ...
    def delete(self, request: HttpRequest, *args, **kwargs) -> HttpResponse: ...
    def put(self, request: HttpRequest, *args, **kwargs) -> HttpResponse: ...
    def patch(self, request: HttpRequest, *args, **kwargs) -> HttpResponse: ...

class ListView(MultipleObjectTemplateResponseMixin, BaseListView):
    """
    Display a list of objects with pagination support.
    
    Generic view for displaying querysets as paginated lists.
    """
    model = None
    queryset = None
    paginate_by = None
    paginate_orphans: int = 0
    context_object_name: str = None
    template_name: str = None
    template_name_suffix: str = '_list'
    allow_empty: bool = True
    page_kwarg: str = 'page'
    paginator_class = None
    ordering = None
    
    def get_queryset(self) -> QuerySet: ...
    def get_context_data(self, **kwargs) -> dict: ...
    def get_paginate_by(self, queryset: QuerySet) -> int: ...
    def get_paginator(self, queryset: QuerySet, per_page: int, orphans: int = 0, allow_empty_first_page: bool = True): ...
    def get_paginate_orphans(self) -> int: ...
    def get_allow_empty(self) -> bool: ...
    def get_context_object_name(self, object_list) -> str: ...
    def paginate_queryset(self, queryset: QuerySet, page_size: int) -> tuple: ...
    def get_ordering(self): ...

class DetailView(SingleObjectTemplateResponseMixin, BaseDetailView):
    """
    Display a single object detail page.
    
    Generic view for displaying individual model instances.
    """
    model = None
    queryset = None
    slug_field: str = 'slug'
    slug_url_kwarg: str = 'slug'
    pk_url_kwarg: str = 'pk'
    context_object_name: str = None
    template_name: str = None
    template_name_field: str = None
    template_name_suffix: str = '_detail'
    
    def get_object(self, queryset: QuerySet = None): ...
    def get_queryset(self) -> QuerySet: ...
    def get_slug_field(self) -> str: ...
    def get_context_data(self, **kwargs) -> dict: ...
    def get_context_object_name(self, obj) -> str: ...

class FormView(TemplateResponseMixin, BaseFormView):
    """
    Display a form and handle form processing.
    
    Generic view for displaying and processing forms.
    """
    form_class = None
    success_url: str = None
    template_name: str = None
    
    def get_form_class(self): ...
    def get_form(self, form_class=None): ...
    def get_form_kwargs(self) -> dict: ...
    def get_initial(self) -> dict: ...
    def form_valid(self, form) -> HttpResponse: ...
    def form_invalid(self, form) -> HttpResponse: ...
    def get_context_data(self, **kwargs) -> dict: ...
    def get_success_url(self) -> str: ...

class ProcessFormView(View):
    """
    Base view for processing forms with GET and POST handling.
    """
    def get(self, request: HttpRequest, *args, **kwargs) -> HttpResponse: ...
    def post(self, request: HttpRequest, *args, **kwargs) -> HttpResponse: ...
    def put(self, *args, **kwargs) -> HttpResponse: ...

class CreateView(SingleObjectTemplateResponseMixin, BaseCreateView):
    """
    Create a new model instance with a form.
    
    Generic view for creating new objects through forms.
    """
    model = None
    form_class = None
    fields = None
    success_url: str = None
    template_name: str = None
    template_name_suffix: str = '_form'
    
    def get_object(self, queryset: QuerySet = None): ...
    def form_valid(self, form) -> HttpResponse: ...
    def get_form_class(self): ...
    def get_form_kwargs(self) -> dict: ...
    def get_success_url(self) -> str: ...

class UpdateView(SingleObjectTemplateResponseMixin, BaseUpdateView):
    """
    Update an existing model instance with a form.
    
    Generic view for editing existing objects through forms.
    """
    model = None
    form_class = None
    fields = None
    slug_field: str = 'slug'
    slug_url_kwarg: str = 'slug'
    pk_url_kwarg: str = 'pk'
    success_url: str = None
    template_name: str = None
    template_name_suffix: str = '_form'
    
    def get_object(self, queryset: QuerySet = None): ...
    def form_valid(self, form) -> HttpResponse: ...
    def get_form_class(self): ...
    def get_form_kwargs(self) -> dict: ...
    def get_success_url(self) -> str: ...

class DeleteView(SingleObjectTemplateResponseMixin, BaseDeleteView):
    """
    Delete an existing model instance with confirmation.
    
    Generic view for deleting objects with confirmation page.
    """
    model = None
    queryset = None
    slug_field: str = 'slug'
    slug_url_kwarg: str = 'slug'
    pk_url_kwarg: str = 'pk'
    success_url: str = None
    template_name: str = None
    template_name_suffix: str = '_confirm_delete'
    
    def get_object(self, queryset: QuerySet = None): ...
    def delete(self, request: HttpRequest, *args, **kwargs) -> HttpResponse: ...
    def post(self, request: HttpRequest, *args, **kwargs) -> HttpResponse: ...
    def get_success_url(self) -> str: ...

class ArchiveIndexView(MultipleObjectTemplateResponseMixin, BaseArchiveIndexView):
    """
    Display archive index of date-based objects.
    
    Top-level index page showing latest objects by date.
    """
    date_field: str = None
    allow_future: bool = False
    allow_empty: bool = True
    template_name_suffix: str = '_archive'
    
    def get_dated_items(self) -> tuple: ...
    def get_dated_queryset(self, **lookup) -> QuerySet: ...
    def get_date_field(self) -> str: ...
    def get_allow_future(self) -> bool: ...

class YearArchiveView(MultipleObjectTemplateResponseMixin, BaseYearArchiveView):
    """
    Display objects for a specific year.
    
    Archive view filtered by year with optional month navigation.
    """
    year_format: str = '%Y'
    date_field: str = None
    make_object_list: bool = False
    allow_future: bool = False
    allow_empty: bool = False
    template_name_suffix: str = '_archive_year'
    
    def get_year_format(self) -> str: ...
    def get_year(self) -> str: ...
    def get_next_year(self, date): ...
    def get_previous_year(self, date): ...
    def get_dated_items(self) -> tuple: ...
    def get_make_object_list(self) -> bool: ...

class MonthArchiveView(MultipleObjectTemplateResponseMixin, BaseMonthArchiveView):
    """
    Display objects for a specific month.
    
    Archive view filtered by year and month.
    """
    year_format: str = '%Y'
    month_format: str = '%b'
    date_field: str = None
    allow_future: bool = False
    allow_empty: bool = False
    template_name_suffix: str = '_archive_month'
    
    def get_month_format(self) -> str: ...
    def get_month(self) -> str: ...
    def get_next_month(self, date): ...
    def get_previous_month(self, date): ...
    def get_dated_items(self) -> tuple: ...

class WeekArchiveView(MultipleObjectTemplateResponseMixin, BaseWeekArchiveView):
    """
    Display objects for a specific week.
    
    Archive view filtered by year and week.
    """
    year_format: str = '%Y'
    week_format: str = '%U'
    date_field: str = None
    allow_future: bool = False
    allow_empty: bool = False
    template_name_suffix: str = '_archive_week'
    
    def get_week_format(self) -> str: ...
    def get_week(self) -> str: ...
    def get_next_week(self, date): ...
    def get_previous_week(self, date): ...
    def get_dated_items(self) -> tuple: ...

class DayArchiveView(MultipleObjectTemplateResponseMixin, BaseDayArchiveView):
    """
    Display objects for a specific day.
    
    Archive view filtered by year, month, and day.
    """
    year_format: str = '%Y'
    month_format: str = '%b'
    day_format: str = '%d'
    date_field: str = None
    allow_future: bool = False
    allow_empty: bool = False
    template_name_suffix: str = '_archive_day'
    
    def get_day_format(self) -> str: ...
    def get_day(self) -> str: ...
    def get_next_day(self, date): ...
    def get_previous_day(self, date): ...
    def get_dated_items(self) -> tuple: ...

class TodayArchiveView(MultipleObjectTemplateResponseMixin, BaseTodayArchiveView):
    """
    Display objects for today's date.
    
    Archive view filtered to current date.
    """
    template_name_suffix: str = '_archive_today'

class DateDetailView(SingleObjectTemplateResponseMixin, BaseDateDetailView):
    """
    Display a single object on a specific date.
    
    Detail view that includes date-based filtering.
    """
    year_format: str = '%Y'
    month_format: str = '%b'
    day_format: str = '%d'
    date_field: str = None
    allow_future: bool = False
    template_name_suffix: str = '_detail'
    
    def get_object(self, queryset: QuerySet = None): ...

class ContextMixin:
    """
    Mixin for adding extra context to template views.
    """
    extra_context: dict = None
    
    def get_context_data(self, **kwargs) -> dict: ...

class TemplateResponseMixin:
    """
    Mixin for views that render templates.
    
    Provides template selection and response rendering.
    """
    template_name: str = None
    template_engine: str = None
    response_class = None
    content_type: str = None
    
    def render_to_response(self, context: dict, **response_kwargs) -> HttpResponse: ...
    def get_template_names(self) -> list: ...

class SingleObjectMixin(ContextMixin):
    """
    Mixin for views that work with single model instances.
    """
    model = None
    queryset = None
    slug_field: str = 'slug'
    context_object_name: str = None
    slug_url_kwarg: str = 'slug'
    pk_url_kwarg: str = 'pk'
    query_pk_and_slug: bool = False
    
    def get_object(self, queryset: QuerySet = None): ...
    def get_queryset(self) -> QuerySet: ...
    def get_slug_field(self) -> str: ...
    def get_context_object_name(self, obj) -> str: ...
    def get_context_data(self, **kwargs) -> dict: ...

class MultipleObjectMixin(ContextMixin):
    """
    Mixin for views that work with multiple objects.
    """
    allow_empty: bool = True
    queryset = None
    model = None
    paginate_by = None
    paginate_orphans: int = 0
    context_object_name: str = None
    paginator_class = None
    page_kwarg: str = 'page'
    ordering = None
    
    def get_queryset(self) -> QuerySet: ...
    def get_ordering(self): ...
    def paginate_queryset(self, queryset: QuerySet, page_size: int) -> tuple: ...
    def get_paginate_by(self, queryset: QuerySet) -> int: ...
    def get_paginator(self, queryset: QuerySet, per_page: int, orphans: int = 0, allow_empty_first_page: bool = True): ...
    def get_paginate_orphans(self) -> int: ...
    def get_allow_empty(self) -> bool: ...
    def get_context_object_name(self, object_list) -> str: ...
    def get_context_data(self, **kwargs) -> dict: ...

class FormMixin(ContextMixin):
    """
    Mixin for views that handle forms.
    """
    initial: dict = {}
    form_class = None
    success_url: str = None
    prefix: str = None
    
    def get_initial(self) -> dict: ...
    def get_prefix(self) -> str: ...
    def get_form_class(self): ...
    def get_form(self, form_class=None): ...
    def get_form_kwargs(self) -> dict: ...
    def get_success_url(self) -> str: ...
    def form_valid(self, form) -> HttpResponse: ...
    def form_invalid(self, form) -> HttpResponse: ...
    def get_context_data(self, **kwargs) -> dict: ...

class ModelFormMixin(FormMixin, SingleObjectMixin):
    """
    Mixin for views that handle model forms.
    """
    fields = None
    
    def get_form_class(self): ...
    def get_form_kwargs(self) -> dict: ...
    def get_success_url(self) -> str: ...
    def form_valid(self, form) -> HttpResponse: ...

class ProcessFormView(View):
    """
    Base view for processing forms.
    """
    def get(self, request: HttpRequest, *args, **kwargs) -> HttpResponse: ...
    def post(self, request: HttpRequest, *args, **kwargs) -> HttpResponse: ...

def require_http_methods(request_method_list: list):
    """
    Decorator to require specific HTTP methods.
    
    Args:
        request_method_list: List of allowed HTTP methods
    """

def require_GET(view_func):
    """Decorator to require GET method."""

def require_POST(view_func):
    """Decorator to require POST method."""

def require_safe(view_func):
    """Decorator to require safe methods (GET, HEAD)."""

def condition(etag_func=None, last_modified_func=None):
    """
    Decorator for conditional view processing.
    
    Args:
        etag_func: Function to calculate ETag
        last_modified_func: Function to calculate last modified date
    """

def etag(etag_func):
    """
    Decorator to add ETag headers.
    
    Args:
        etag_func: Function to calculate ETag value
    """

def last_modified(last_modified_func):
    """
    Decorator to add Last-Modified headers.
    
    Args:
        last_modified_func: Function to calculate last modified date
    """

def vary_on_cookie(view_func):
    """Decorator to add Vary: Cookie header."""

def vary_on_headers(*headers):
    """
    Decorator to add Vary headers.
    
    Args:
        headers: Header names to vary on
    """

def cache_control(**kwargs):
    """
    Decorator to add Cache-Control headers.
    
    Args:
        **kwargs: Cache control directives
    """

def never_cache(view_func):
    """Decorator to prevent caching."""

def cache_page(timeout: int, cache: str = None, key_prefix: str = None):
    """
    Decorator for page-level caching.
    
    Args:
        timeout: Cache timeout in seconds
        cache: Cache backend name
        key_prefix: Cache key prefix
    """

def render(request: HttpRequest, template_name: str, context: dict = None, 
          content_type: str = None, status: int = None, using: str = None) -> HttpResponse:
    """
    Render template with context to HttpResponse.
    
    Args:
        request: HTTP request object
        template_name: Template name to render
        context: Template context dictionary
        content_type: Response content type
        status: HTTP status code
        using: Template engine name
    """

def render_to_response(template_name: str, context: dict = None, 
                      content_type: str = None, status: int = None, using: str = None) -> HttpResponse:
    """
    Render template to HttpResponse without request context.
    
    Args:
        template_name: Template name to render
        context: Template context dictionary  
        content_type: Response content type
        status: HTTP status code
        using: Template engine name
    """

def redirect(to, permanent: bool = False, *args, **kwargs) -> HttpResponse:
    """
    Return redirect response to given URL or view.
    
    Args:
        to: URL, view name, or model instance to redirect to
        permanent: Whether to use permanent redirect (301 vs 302)
        *args: Arguments for URL resolution
        **kwargs: Keyword arguments for URL resolution
    """

def get_object_or_404(klass, *args, **kwargs):
    """
    Get object or raise Http404 if not found.
    
    Args:
        klass: Model class or Manager
        *args: Lookup arguments
        **kwargs: Lookup keyword arguments
    """

def get_list_or_404(klass, *args, **kwargs):
    """
    Get object list or raise Http404 if empty.
    
    Args:
        klass: Model class or Manager  
        *args: Filter arguments
        **kwargs: Filter keyword arguments
    """