Question

我有一个管理模型，其中包含一些内联模型（请参阅下面的 ResourceUserAdmin 模型以获取完整版）：

    inlines = [ 
            ResourceLocationInlineAdmin ,
            ResourceCategoryInlineAdmin , 
            ResourceStageInlineAdmin ,
          ]

当用户点击以创建新的 ResourceUserAdmin 时，我希望类 ResourceCategoryInlineAdmin 的内联获取初始值 - 请注意，这些关系不会保存到数据库。我试图覆盖 add_view 函数的一部分来获得我想要的但我无法弄清楚如何将多个内联表单传递回父级。

关于如何实现这一目标的任何想法？

模型

class ResourceUserAdmin( admin.ModelAdmin ):
    inlines = [ 
            ResourceLocationInlineAdmin ,
            ResourceCategoryInlineAdmin , 
            ResourceStageInlineAdmin ,
          ]

    list_display = ( 
                 'user' , 
                 'name' ,
                 'state' ,
                 'email' ,
                 'website' ,
                 'phone' ,
                 'logo_url_link',
    )

    search_fields = ( 'name' , 'email' , 'website'  )

    list_filter = ( 'name' , 'state' , 'email' , 'website' )

    ordering = ( 'name', )

     fields = ( 
             'user' , 
             'name' ,
             'state' ,
             'email' ,
             'website' ,
             'phone' ,
             'logo' ,
             'ideal_candidate',
    )
admin.site.register( ResourceUser, ResourceUserAdmin )

以下是我想在默认情况下创建许多内联模型：

class ResourceCategoryInlineAdmin( admin.StackedInline ):
    model = ResourceCategory
    extra = 0

class ResourceCategoryAdmin( admin.ModelAdmin ):
    list_display = ( 'user' ,
                     'category' , )

    ordering = ( 'user' , )
    fields = ( 'user' , 'category' )

    def formfield_for_foreignkey( self, db_field, *args, **kwargs ):
        if isinstance( db_field, models.ForeignKey ):
            if db_field.name == 'category':
                kwargs['widget'] = forms.RadioSelect()
        return super( ResourceCategoryAdmin, self).formfield_for_foreignkey( db_field, **kwargs )

admin.site.register( ResourceCategory, ResourceCategoryAdmin )

Answer 1

这是一个解决方案，虽然不是我真正想要使用的选项。你可以通过覆盖整个 add_view 函数并为表单集中的每个表单设置初始属性来实现它（查看下面的覆盖注释）

def add_view(self, request, form_url='', extra_context=None):
    "The 'add' admin view for this model."
    model = self.model
    opts = model._meta

    if not self.has_add_permission(request):
        raise PermissionDenied

    ModelForm = self.get_form(request)
    formsets = []
    if request.method == 'POST':
        form = ModelForm(request.POST, request.FILES)
        if form.is_valid():
            new_object = self.save_form(request, form, change=False)
            form_validated = True
        else:
            form_validated = False
            new_object = self.model()
        prefixes = {}
        for FormSet, inline in zip(self.get_formsets(request), self.inline_instances):
            prefix = FormSet.get_default_prefix()
            prefixes[prefix] = prefixes.get(prefix, 0) + 1
            if prefixes[prefix] != 1:
                prefix = "%s-%s" % (prefix, prefixes[prefix])
            formset = FormSet(data=request.POST, files=request.FILES,
                              instance=new_object,
                              save_as_new="_saveasnew" in request.POST,
                              prefix=prefix, queryset=inline.queryset(request))
            formsets.append(formset)
        if all_valid(formsets) and form_validated:
            self.save_model(request, new_object, form, change=False)
            form.save_m2m()
            for formset in formsets:
                self.save_formset(request, form, formset, change=False)

            self.log_addition(request, new_object)
            return self.response_add(request, new_object)
    else:
        # Prepare the dict of initial data from the request.
        # We have to special-case M2Ms as a list of comma-separated PKs.
        initial = dict(request.GET.items())
        for k in initial:
            logger.info( "for k in initial, k = %s" % k )
            try:
                f = opts.get_field(k)
            except models.FieldDoesNotExist:
                continue
            if isinstance(f, models.ManyToManyField):
                initial[k] = initial[k].split(",")
        form = ModelForm(initial=initial)
        prefixes = {}
        for FormSet, inline in zip(self.get_formsets(request),
                                   self.inline_instances):
            prefix = FormSet.get_default_prefix()
            prefixes[prefix] = prefixes.get(prefix, 0) + 1
            if prefixes[prefix] != 1:
                prefix = "%s-%s" % (prefix, prefixes[prefix])

            formset = FormSet(instance=self.model(), prefix=prefix, queryset=inline.queryset(request))

            #
            #
            # override the inlines of my choice
            # to create initial values
            #
            #
            if inline.__class__.__name__ == 'ResourceCategoryInlineAdmin':
                for frm, category in zip( formset, Category.objects.all() ):
                   frm.fields['category'].initial = category

            formsets.append(formset)

    adminForm = helpers.AdminForm(form, list(self.get_fieldsets(request)),
        self.prepopulated_fields, self.get_readonly_fields(request),
        model_admin=self)
    media = self.media + adminForm.media

    inline_admin_formsets = []
    for inline, formset in zip(self.inline_instances, formsets):
        fieldsets = list(inline.get_fieldsets(request))
        readonly = list(inline.get_readonly_fields(request))
        inline_admin_formset = helpers.InlineAdminFormSet(inline, formset,
            fieldsets, readonly, model_admin=self)
        inline_admin_formsets.append(inline_admin_formset)
        media = media + inline_admin_formset.media

    context = {
        'title': _('Add %s') % force_unicode(opts.verbose_name),
        'adminform': adminForm,
        'is_popup': "_popup" in request.REQUEST,
        'show_delete': False,
        'media': mark_safe(media),
        'inline_admin_formsets': inline_admin_formsets,
        'errors': helpers.AdminErrorList(form, formsets),
        'root_path': self.admin_site.root_path,
        'app_label': opts.app_label,
    }
    context.update(extra_context or {})
    return self.render_change_form(request, context, form_url=form_url, add=True)
    #return super(ResourceUserAdmin, self).add_view(request, form_url=form_url, extra_context=extra_context)

自定义Django Admin：在Parent Add_View上添加多个默认内联

1 个答案: