3
g                 @   s   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mZ G dd deZG d	d
 d
eeZG dd deZG dd deeZdS )    )ImproperlyConfigured)InvalidPage	Paginator)QuerySet)Http404)gettext)ContextMixinTemplateResponseMixinViewc                   s   e Zd ZdZdZdZdZdZdZdZ	e
ZdZdZdd Zdd	 Zd
d Zdd ZdddZdd Zdd Zdd Zdd fdd
Z  ZS )MultipleObjectMixinz0A mixin for views manipulating multiple objects.TNr   pagec             C   sz   | j dk	r$| j }t|trP|j }n,| jdk	r<| jjj }ntdd| jji | j	 }|rvt|t
rl|f}|j| }|S )z
        Return the list of items for this view.

        The return value must be an iterable and may be an instance of
        `QuerySet` in which case `QuerySet` specific behavior will be enabled.
        Nzj%(cls)s is missing a QuerySet. Define %(cls)s.model, %(cls)s.queryset, or override %(cls)s.get_queryset().cls)queryset
isinstancer   allmodelZ_default_managerr   	__class____name__get_orderingstrZorder_by)selfr   ordering r   W/var/www/tester-filtro-web/env/lib/python3.6/site-packages/django/views/generic/list.pyget_queryset   s    





z MultipleObjectMixin.get_querysetc             C   s   | j S )z<Return the field or fields to use for ordering the queryset.)r   )r   r   r   r   r   2   s    z MultipleObjectMixin.get_orderingc             C   s   | j ||| j | j d}| j}| jj|p<| jjj|p<d}yt|}W n0 t	k
rz   |dkrj|j
}nttdY nX y|j|}|||j|j fS  tk
r } z ttd|t|d W Y dd}~X nX dS )z!Paginate the queryset, if needed.)orphansallow_empty_first_page   lastu:   Page is not “last”, nor can it be converted to an int.z+Invalid page (%(page_number)s): %(message)s)page_numbermessageN)get_paginatorget_paginate_orphansget_allow_empty
page_kwargkwargsgetrequestGETint
ValueErrorZ	num_pagesr   _r   object_listZhas_other_pagesr   r   )r   r   	page_size	paginatorr$   r   r   er   r   r   paginate_queryset6   s$    

z%MultipleObjectMixin.paginate_querysetc             C   s   | j S )zX
        Get the number of items to paginate by, or ``None`` for no pagination.
        )paginate_by)r   r   r   r   r   get_paginate_byM   s    z#MultipleObjectMixin.get_paginate_byc             K   s   | j ||f||d|S )z2Return an instance of the paginator for this view.)r   r   )paginator_class)r   r   Zper_pager   r   r%   r   r   r   r!   S   s    z!MultipleObjectMixin.get_paginatorc             C   s   | j S )zg
        Return the maximum number of orphans extend the last page by when
        paginating.
        )paginate_orphans)r   r   r   r   r"   Z   s    z(MultipleObjectMixin.get_paginate_orphansc             C   s   | j S )z
        Return ``True`` if the view should display empty lists and ``False``
        if a 404 should be raised instead.
        )allow_empty)r   r   r   r   r#   a   s    z#MultipleObjectMixin.get_allow_emptyc             C   s,   | j r| j S t|dr$d|jjj S dS dS )z3Get the name of the item to be used in the context.r   z%s_listN)context_object_namehasattrr   _meta
model_name)r   r,   r   r   r   get_context_object_nameh   s
    
z+MultipleObjectMixin.get_context_object_name)r,   c      
         s   |dk	r|n| j }| j|}| j|}|rN| j||\}}}}||||d}	nddd|d}	|dk	rl||	|< |	j| t jf |	S )zGet the context for this view.N)r.   Zpage_objis_paginatedr,   F)r,   r2   r:   r0   updatesuperget_context_data)
r   r,   r%   r   r-   r6   r.   r   r;   context)r   r   r   r>   q   s"    



z$MultipleObjectMixin.get_context_data)r   T)r   
__module____qualname____doc__r5   r   r   r1   r4   r6   r   r3   r$   r   r   r   r0   r2   r!   r"   r#   r:   r>   __classcell__r   r   )r   r   r   	   s(    
	r   c               @   s   e Zd ZdZdd ZdS )BaseListViewz-A base view for displaying a list of objects.c             O   sv   | j  | _| j }|sd| j| jd k	r@t| jdr@| jj  }n| j }|rdttdd| jj	i | j
 }| j|S )Nexistsu9   Empty list and “%(class_name)s.allow_empty” is False.
class_name)r   r,   r#   r2   r7   rE   r   r+   r   r   r>   Zrender_to_response)r   r'   argsr%   r5   Zis_emptyr?   r   r   r   r&      s    
zBaseListView.getN)r   r@   rA   rB   r&   r   r   r   r   rD      s   rD   c                   s$   e Zd ZdZdZ fddZ  ZS )#MultipleObjectTemplateResponseMixinz9Mixin for responding with a template and list of objects.Z_listc                sv   yt  j }W n tk
r&   g }Y nX t| jdrZ| jjj}|jd|j|j	| j
f  n|srtdd| jji |S )z
        Return 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.
        r   z%s/%s%s.htmlzg%(cls)s requires either a 'template_name' attribute or a get_queryset() method that returns a QuerySet.r   )r=   get_template_namesr   r7   r,   r   r8   appendZ	app_labelr9   template_name_suffixr   r   )r   namesopts)r   r   r   rI      s    

z6MultipleObjectTemplateResponseMixin.get_template_names)r   r@   rA   rB   rK   rI   rC   r   r   )r   r   rH      s   rH   c               @   s   e Zd ZdZdS )ListViewz
    Render some list of objects, set by `self.model` or `self.queryset`.
    `self.queryset` can actually be any iterable of items, not just a queryset.
    N)r   r@   rA   rB   r   r   r   r   rN      s   rN   N)Zdjango.core.exceptionsr   Zdjango.core.paginatorr   r   Zdjango.db.modelsr   Zdjango.httpr   Zdjango.utils.translationr   r+   Zdjango.views.generic.baser   r	   r
   r   rD   rH   rN   r   r   r   r   <module>   s    !