ModelAdmin + Changelist as ClassBased views

modeladmin_changelist.py

'''
Class Based changelist, composition
'''

class MisOfertas(ModelAdmin):
    
    list_display = ( 'get_estado', 'nombre', 'origen_', 'destino_', 'owner_',  
        'caducidad', 'editar', 'borrar')
    list_filter = ( 'status', CargadorFilter, OrigenFilter, DestinoFilter  )
    search_fields = ( 'nombre', 'owner__business_name', 'owner__comercial_name', 
        'origen__codigo', 'origen__parent__codigo')
    change_list_template = ('oferta/mis_ofertas.html')
    list_display_links = ('nombre', 'editar')
    list_per_page = 15

    def origen_(self,obj):
        #pais = obj.origen.get_ancestors(ascending=True, include_self=False)
        pais = self.paisos[obj.origen.parent_id]        
        return "<span class='flag flag-%s'></span> %s%s" % (pais.codigo,
            pais.codigo.upper(), obj.origen)
    origen_.admin_order_field = 'origen'    
    origen_.allow_tags = True

    def destino_(self,obj):
        destino = self.paisos[obj.destino_id]
        return "<span class='flag flag-%s'></span> %s" % (destino.codigo,destino.codigo.upper())
    destino_.admin_order_field = 'destino'    
    destino_.allow_tags = True


    def owner_(self, obj):
        return "<a href='%s'>%s</a>" % (  
                reverse('view_empresa_directorio', args=[obj.owner_id]), 
                obj.owner )
    owner_.admin_order_field = 'owner'    
    owner_.allow_tags = True
    owner_.short_description = _(u'Cargador')

    def has_change_permission(self, request, obj=None):
        self.empresa = request.user.empresa
        if self.empresa.is_cargador():
            return None
        return True


    def get_estado( self, object ):
        icon = ('ion-close-circled', 'ion-checkmark-circled')
        return "<span class='%s icon'> </span>" % icon[ object.status ]
    get_estado.allow_tags = True
    get_estado.short_description = _(u'Estado')


    def editar(self,obj):
        return "<span class='action_icon ion-compose'></span>"
    editar.allow_tags = True
    editar.list_editable = True
    editar.short_description = _(u'Ver')


    def borrar(self,obj):
        return "<a href=%s class='doffer'><span class='action_icon ion-trash-b'></span><a/>" % (
            reverse('delete_oferta', args=(obj.pk,)))
    borrar.allow_tags = True
    borrar.list_editable = True


    def get_changelist(self, request, **kwargs):
        class VistaCanvis( ChangeList ):
            def url_for_result(self, result):
                pk = getattr(result, self.pk_attname)
                return reverse('view_oferta', args=[pk])

        return VistaCanvis

    

    def queryset(self, request):

        ''' nomes veu les seves ofertes '''
        empresa = self.empresa
        self.paisos = get_countries_key()
        import datetime
        d = datetime.date.today()
        return self.model.objects.filter(empresa=empresa).filter( 
            Q(caducidad__gte=d) | Q(caducidad__isnull=True) ).select_related()

'''
El default site, e
rom django.contrib.admin.views.main import ChangeList
from django.contrib.admin.sites import AdminSite
class DefaultSite(AdminSite):
    def has_permission(self, request):
        return True

'''


def mis_ofertas(request):
    l = MisOfertas( Oferta, DefaultSite() )
    return l.changelist_view( request )