o
    ÖèFhoI  ã                   @   sú   d Z ddlmZ ddlmZ ddlmZmZ ddlm	Z	 ddl
mZ ddlmZmZ ddlmZ dd	lmZ dd
lmZ ddlmZmZ ddlmZ ddlmZ ddlmZ ddlmZ ddl m!Z! dd„ Z"ddd„Z#dd„ Z$dd„ Z%G dd„ deƒZ&dS )zL
Provides an APIView class that is the base of all views in REST framework.
é    )Úsettings)ÚPermissionDenied)ÚconnectionsÚmodels)ÚHttp404)ÚHttpResponseBase)Úcc_delim_reÚpatch_vary_headers)Ú	smart_str)Úcsrf_exempt)ÚView)Ú
exceptionsÚstatus)ÚRequest)ÚResponse)ÚDefaultSchema)Úapi_settings)Ú
formattingc                 C   sb   t | ddƒ}|dur|S | jj}t |d¡}t |d¡}t |¡}t | ddƒ}|r/|d| 7 }|S )zÛ
    Given a view instance, return a textual name to represent the view.
    This name is used in the browsable API, and in OPTIONS responses.

    This function is the default for the `VIEW_NAME_FUNCTION` setting.
    ÚnameNr   ÚViewSetÚsuffixú )ÚgetattrÚ	__class__Ú__name__r   Úremove_trailing_stringÚcamelcase_to_spaces)Úviewr   r   © r   úM/var/www/html/loop/nvenv/lib/python3.10/site-packages/rest_framework/views.pyÚget_view_name   s   
r    Fc                 C   s@   t | ddƒ}|du r| jjpd}t t|ƒ¡}|rt |¡S |S )zé
    Given a view instance, return a textual description to represent the view.
    This name is used in the browsable API, and in OPTIONS responses.

    This function is the default for the `VIEW_DESCRIPTION_FUNCTION` setting.
    ÚdescriptionNÚ )r   r   Ú__doc__r   Údedentr
   Úmarkup_description)r   Úhtmlr!   r   r   r   Úget_view_description/   s   
r'   c                  C   s,   t  ¡ D ]} | jd r| jr|  d¡ qd S )NÚATOMIC_REQUESTST)r   ÚallÚsettings_dictÚin_atomic_blockÚset_rollback)Údbr   r   r   r,   A   s
   
€þr,   c                 C   sª   t | tƒrtj| jŽ } nt | tƒrtj| jŽ } t | tjƒrSi }t| ddƒr*| j|d< t| ddƒr7d| j	 |d< t | j
ttfƒrC| j
}nd| j
i}tƒ  t|| j|d�S dS )	a4  
    Returns the response that should be used for any given exception.

    By default we handle the REST framework `APIException`, and also
    Django's built-in `Http404` and `PermissionDenied` exceptions.

    Any unhandled exceptions may return `None`, which will cause a 500 error
    to be raised.
    Úauth_headerNzWWW-AuthenticateÚwaitz%dzRetry-AfterÚdetail)r   Úheaders)Ú
isinstancer   r   ÚNotFoundÚargsr   ÚAPIExceptionr   r.   r/   r0   ÚlistÚdictr,   r   Ústatus_code)ÚexcÚcontextr1   Údatar   r   r   Úexception_handlerG   s    




r<   c                       sh  e Zd ZejZejZejZ	ej
ZejZejZejZejZeZeƒ Ze‡ fdd„ƒZedd„ ƒZedd„ ƒZdd„ ZdEd
d„Zdd„ Zdd„ Zdd„ Z dd„ Z!dd„ Z"dd„ Z#dFdd„Z$dd„ Z%dd„ Z&dd „ Z'd!d"„ Z(d#d$„ Z)d%d&„ Z*d'd(„ Z+d)d*„ Z,dFd+d,„Z-d-d.„ Z.d/d0„ Z/d1d2„ Z0d3d4„ Z1d5d6„ Z2d7d8„ Z3d9d:„ Z4d;d<„ Z5d=d>„ Z6d?d@„ Z7dAdB„ Z8dCdD„ Z9‡  Z:S )GÚAPIViewc                    sL   t t| ddƒtjjƒrdd„ }|| j_tƒ jdi |¤Ž}| |_	||_
t|ƒS )zÈ
        Store the original class on the view function.

        This allows us to discover information about the view when we do URL
        reverse lookups.  Used for breadcrumb generation.
        ÚquerysetNc                   S   s   t dƒ‚)Nz�Do not evaluate the `.queryset` attribute directly, as the result will be cached and reused between requests. Use `.all()` or call `.get_queryset()` instead.)ÚRuntimeErrorr   r   r   r   Úforce_evaluation‚   s   ÿz)APIView.as_view.<locals>.force_evaluationr   )r2   r   r   ÚqueryÚQuerySetr>   Ú
_fetch_allÚsuperÚas_viewÚclsÚ
initkwargsr   )rF   rG   r@   r   ©r   r   r   rE   y   s   zAPIView.as_viewc                 C   s   |   ¡ S )zZ
        Wrap Django's private `_allowed_methods` interface in a public property.
        )Ú_allowed_methods©Úselfr   r   r   Úallowed_methods’   s   zAPIView.allowed_methodsc                 C   s*   dd  | j¡i}t| jƒdkrd|d< |S )NÚAllowz, é   ÚAcceptÚVary)ÚjoinrL   ÚlenÚrenderer_classes)rK   r1   r   r   r   Údefault_response_headers™   s
   ÿz APIView.default_response_headersc                 O   s   t  |j¡‚)z�
        If `request.method` does not correspond to a handler method,
        determine what kind of exception to raise.
        )r   ÚMethodNotAllowedÚmethod)rK   Úrequestr4   Úkwargsr   r   r   Úhttp_method_not_allowed¢   s   zAPIView.http_method_not_allowedNc                 C   s"   |j r
|js
t ¡ ‚tj||d�‚)zY
        If request is not permitted, determine what kind of exception to raise.
        )r0   Úcode)ÚauthenticatorsÚsuccessful_authenticatorr   ÚNotAuthenticatedr   )rK   rW   ÚmessagerZ   r   r   r   Úpermission_denied©   s   zAPIView.permission_deniedc                 C   s
   t  |¡‚)zU
        If request is throttled, determine what kind of exception to raise.
        )r   Ú	Throttled)rK   rW   r/   r   r   r   Ú	throttled±   s   
zAPIView.throttledc                 C   s   |   ¡ }|r|d  |¡S dS )z‚
        If a request is unauthenticated, determine the WWW-Authenticate
        header to use for 401 responses, if any.
        r   N)Úget_authenticatorsÚauthenticate_header)rK   rW   r[   r   r   r   Úget_authenticate_header·   s   ÿzAPIView.get_authenticate_headerc                 C   s   | t | ddƒt | di ƒdœS )z|
        Returns a dict that is passed through to Parser.parse(),
        as the `parser_context` keyword argument.
        r4   r   rX   )r   r4   rX   ©r   )rK   Úhttp_requestr   r   r   Úget_parser_contextÀ   s   

ýzAPIView.get_parser_contextc                 C   ó&   | t | ddƒt | di ƒt | ddƒdœS )z�
        Returns a dict that is passed through to Renderer.render(),
        as the `renderer_context` keyword argument.
        r4   r   rX   rW   N©r   r4   rX   rW   re   rJ   r   r   r   Úget_renderer_contextÍ   s
   


üzAPIView.get_renderer_contextc                 C   rh   )zp
        Returns a dict that is passed through to EXCEPTION_HANDLER,
        as the `context` argument.
        r4   r   rX   rW   Nri   re   rJ   r   r   r   Úget_exception_handler_contextÛ   s
   


üz%APIView.get_exception_handler_contextc                 C   s   | j j}|| ƒS )zf
        Return the view name, as used in OPTIONS responses and in the
        browsable API.
        )r   ÚVIEW_NAME_FUNCTION)rK   Úfuncr   r   r   r    ç   s   zAPIView.get_view_nameFc                 C   s   | j j}|| |ƒS )z{
        Return some descriptive text for the view, as used in OPTIONS responses
        and in the browsable API.
        )r   ÚVIEW_DESCRIPTION_FUNCTION)rK   r&   rm   r   r   r   r'   ï   s   
zAPIView.get_view_descriptionc                 K   s   | j jr| | j j¡S dS )zQ
        Determine if the request includes a '.json' style format suffix
        N)r   ÚFORMAT_SUFFIX_KWARGÚget)rK   rX   r   r   r   Úget_format_suffixù   s   ÿzAPIView.get_format_suffixc                 C   ó   dd„ | j D ƒS )zX
        Instantiates and returns the list of renderers that this view can use.
        c                 S   ó   g | ]}|ƒ ‘qS r   r   )Ú.0Úrendererr   r   r   Ú
<listcomp>  ó    z)APIView.get_renderers.<locals>.<listcomp>)rS   rJ   r   r   r   Úget_renderers   ó   zAPIView.get_renderersc                 C   rr   )zV
        Instantiates and returns the list of parsers that this view can use.
        c                 S   rs   r   r   )rt   Úparserr   r   r   rv   
  rw   z'APIView.get_parsers.<locals>.<listcomp>)Úparser_classesrJ   r   r   r   Úget_parsers  ry   zAPIView.get_parsersc                 C   rr   )z]
        Instantiates and returns the list of authenticators that this view can use.
        c                 S   rs   r   r   )rt   Úauthr   r   r   rv     rw   z.APIView.get_authenticators.<locals>.<listcomp>)Úauthentication_classesrJ   r   r   r   rb     ry   zAPIView.get_authenticatorsc                 C   rr   )z[
        Instantiates and returns the list of permissions that this view requires.
        c                 S   rs   r   r   )rt   Ú
permissionr   r   r   rv     rw   z+APIView.get_permissions.<locals>.<listcomp>)Úpermission_classesrJ   r   r   r   Úget_permissions  ry   zAPIView.get_permissionsc                 C   rr   )zU
        Instantiates and returns the list of throttles that this view uses.
        c                 S   rs   r   r   )rt   Úthrottler   r   r   rv     rw   z)APIView.get_throttles.<locals>.<listcomp>)Úthrottle_classesrJ   r   r   r   Úget_throttles  ry   zAPIView.get_throttlesc                 C   s   t | ddƒs|  ¡ | _| jS )zN
        Instantiate and return the content negotiation class to use.
        Ú_negotiatorN)r   Úcontent_negotiation_classr…   rJ   r   r   r   Úget_content_negotiator  s   
zAPIView.get_content_negotiatorc                 C   s   | j jS )zD
        Returns the exception handler that this view uses.
        )r   ÚEXCEPTION_HANDLERrJ   r   r   r   Úget_exception_handler&  s   zAPIView.get_exception_handlerc                 C   sN   |   ¡ }|  ¡ }z	| ||| j¡W S  ty&   |r%|d |d jf Y S ‚ w )zU
        Determine which renderer and media type to use render the response.
        r   )rx   r‡   Úselect_rendererÚformat_kwargÚ	ExceptionÚ
media_type)rK   rW   ÚforceÚ	renderersÚconnegr   r   r   Úperform_content_negotiation.  s   ýz#APIView.perform_content_negotiationc                 C   s
   |j  dS )a  
        Perform authentication on the incoming request.

        Note that if you override this and simply 'pass', then authentication
        will instead be performed lazily, the first time either
        `request.user` or `request.auth` is accessed.
        N)Úuser)rK   rW   r   r   r   Úperform_authentication<  s   
zAPIView.perform_authenticationc                 C   s>   |   ¡ D ]}| || ¡s| j|t|ddƒt|ddƒd� qdS )z„
        Check if the request should be permitted.
        Raises an appropriate exception if the request is not permitted.
        r^   NrZ   ©r^   rZ   )r�   Úhas_permissionr_   r   )rK   rW   r   r   r   r   Úcheck_permissionsF  s   

ý€þzAPIView.check_permissionsc                 C   s@   |   ¡ D ]}| || |¡s| j|t|ddƒt|ddƒd� qdS )z—
        Check if the request should be permitted for a given object.
        Raises an appropriate exception if the request is not permitted.
        r^   NrZ   r”   )r�   Úhas_object_permissionr_   r   )rK   rW   Úobjr   r   r   r   Úcheck_object_permissionsS  s   

ý€þz APIView.check_object_permissionsc                 C   s^   g }|   ¡ D ]}| || ¡s| | ¡ ¡ q|r-dd„ |D ƒ}t|dd�}|  ||¡ dS dS )z|
        Check if request should be throttled.
        Raises an appropriate exception if the request is throttled.
        c                 S   s   g | ]}|d ur|‘qS )Nr   )rt   Údurationr   r   r   rv   m  s
    ÿz+APIView.check_throttles.<locals>.<listcomp>N)Údefault)r„   Úallow_requestÚappendr/   Úmaxra   )rK   rW   Úthrottle_durationsr‚   Ú	durationsrš   r   r   r   Úcheck_throttles`  s   €ÿ÷zAPIView.check_throttlesc                 O   s2   | j du rdS |   ¡ }|j|g|¢R i |¤Ž|fS )z£
        If versioning is being used, then determine any API version for the
        incoming request. Returns a two-tuple of (version, versioning_scheme)
        N©NN)Úversioning_classÚdetermine_version)rK   rW   r4   rX   Úschemer   r   r   r¤   u  s   
zAPIView.determine_versionc                 O   s(   |   |¡}t||  ¡ |  ¡ |  ¡ |d�S )z5
        Returns the initial request object.
        )Úparsersr[   Ú
negotiatorÚparser_context)rg   r   r|   rb   r‡   )rK   rW   r4   rX   r¨   r   r   r   Úinitialize_request�  s   
ûzAPIView.initialize_requestc                 O   st   | j di |¤Ž| _|  |¡}|\|_|_| j|g|¢R i |¤Ž\}}|||_|_|  |¡ |  	|¡ |  
|¡ dS )zX
        Runs anything that needs to occur prior to calling the method handler.
        Nr   )rq   r‹   r‘   Úaccepted_rendererÚaccepted_media_typer¤   ÚversionÚversioning_schemer“   r–   r¡   )rK   rW   r4   rX   Únegr¬   r¥   r   r   r   Úinitial�  s   


zAPIView.initialc           	      O   sª   t |tƒsJ dt|ƒ ƒ‚t |tƒr2t|ddƒs%| j|dd�}|\|_|_|j|_|j|_|  ¡ |_	| j
 dd¡}|durEt|t |¡ƒ | j
 ¡ D ]\}}|||< qJ|S )z4
        Returns the final response object.
        zrExpected a `Response`, `HttpResponse` or `StreamingHttpResponse` to be returned from the view, but received a `%s`rª   NT)rŽ   rP   )r2   r   Útyper   r   r‘   rª   r«   rj   Úrenderer_contextr1   Úpopr	   r   ÚsplitÚitems)	rK   rW   Úresponser4   rX   r®   Úvary_headersÚkeyÚvaluer   r   r   Úfinalize_response¢  s$   þÿ


zAPIView.finalize_responsec                 C   sh   t |tjtjfƒr|  | j¡}|r||_ntj|_	|  
¡ }|  ¡ }|||ƒ}|du r/|  |¡ d|_|S )zz
        Handle any exception that occurs, by returning an appropriate response,
        or re-raising the error.
        NT)r2   r   r]   ÚAuthenticationFailedrd   rW   r.   r   ÚHTTP_403_FORBIDDENr8   r‰   rk   Úraise_uncaught_exceptionÚ	exception)rK   r9   r.   r<   r:   rµ   r   r   r   Úhandle_exceptionÀ  s   ÿ

zAPIView.handle_exceptionc                 C   s.   t jr| j}t|jdƒ}|dv}| |¡ |‚)NÚformat)r&   ÚapiÚadmin)r   ÚDEBUGrW   r   rª   Úforce_plaintext_errors)rK   r9   rW   Úrenderer_formatÚuse_plaintext_tracebackr   r   r   r¼   Ú  s   
z APIView.raise_uncaught_exceptionc              
   O   sâ   || _ || _| j|g|¢R i |¤Ž}|| _| j| _z/| j|g|¢R i |¤Ž |j ¡ | j	v r9t
| |j ¡ | jƒ}n| j}||g|¢R i |¤Ž}W n ty_ } z|  |¡}W Y d}~nd}~ww | j||g|¢R i |¤Ž| _| jS )z¡
        `.dispatch()` is pretty much the same as Django's regular dispatch,
        but with extra hooks for startup, finalize, and exception handling.
        N)r4   rX   r©   rW   rT   r1   r¯   rV   ÚlowerÚhttp_method_namesr   rY   rŒ   r¾   r¹   rµ   )rK   rW   r4   rX   Úhandlerrµ   r9   r   r   r   Údispatchå  s&   ÿ€ÿzAPIView.dispatchc                 O   s@   | j du r| j|g|¢R i |¤ŽS |   ¡  || ¡}t|tjd�S )z<
        Handler method for HTTP 'OPTIONS' request.
        N)r   )Úmetadata_classrY   Údetermine_metadatar   r   ÚHTTP_200_OK)rK   rW   r4   rX   r;   r   r   r   Úoptions  s   
zAPIView.optionsr¢   ©F);r   Ú
__module__Ú__qualname__r   ÚDEFAULT_RENDERER_CLASSESrS   ÚDEFAULT_PARSER_CLASSESr{   ÚDEFAULT_AUTHENTICATION_CLASSESr~   ÚDEFAULT_THROTTLE_CLASSESrƒ   ÚDEFAULT_PERMISSION_CLASSESr€   Ú!DEFAULT_CONTENT_NEGOTIATION_CLASSr†   ÚDEFAULT_METADATA_CLASSrÊ   ÚDEFAULT_VERSIONING_CLASSr£   r   r   ÚschemaÚclassmethodrE   ÚpropertyrL   rT   rY   r_   ra   rd   rg   rj   rk   r    r'   rq   rx   r|   rb   r�   r„   r‡   r‰   r‘   r“   r–   r™   r¡   r¤   r©   r¯   r¹   r¾   r¼   rÉ   rÍ   Ú__classcell__r   r   rH   r   r=   h   s^    


	



r=   NrÎ   )'r#   Údjango.confr   Údjango.core.exceptionsr   Ú	django.dbr   r   Údjango.httpr   Údjango.http.responser   Údjango.utils.cacher   r	   Údjango.utils.encodingr
   Údjango.views.decorators.csrfr   Údjango.views.genericr   Úrest_frameworkr   r   Úrest_framework.requestr   Úrest_framework.responser   Úrest_framework.schemasr   Úrest_framework.settingsr   Úrest_framework.utilsr   r    r'   r,   r<   r=   r   r   r   r   Ú<module>   s*    
!