Question

我正在构建一个用于上传文件的Django应用程序。我希望能够计算用户拥有的文件数量以及批准的文件数量。我有一个布尔＆＃39;批准的模型＆＃39;领域。此模型位于admin.py中。

在admin.py

中

from django.contrib import admin
from .models import FileModel
from .forms import FileForm
class FileModelAdmin(admin.ModelAdmin):
    form = FileForm
    fields = ('title', 'description', 'categories', 'pub_date', 'submitted_date', 'author', 'user', 'approved', 'upload', 'vote')
    # pass                                                                                                                                            
    list_display = ['title', 'approved', 'author', 'user', 'categories', 'description', 'pub_date', 'submitted_date', 'upload', 'vote']
admin.site.register(FileModel, FileModelAdmin)

我想要另一个模型中的整数＆＃39; new_user_model＆＃39;，这是在另一个应用中，以增加整数字段＆＃39;文件＆＃39;在管理站点中批准文件时使用一个。通过这种方式，我可以跟踪每个用户已批准的文件数量。

class NewUserModel(models.Model):
    user = models.OneToOneField(User, on_delete=models.CASCADE)
    # user = models.ForeignKey(User)                                                                                                                  
    files = models.IntegerField(default=0)

文件模型

class FileModel(models.Model):
    title = models.CharField(max_length=100)
    description = models.CharField(max_length=255)
    pub_date = models.DateTimeField('date published')
    submitted_date = models.DateTimeField('date submitted')
    author = models.CharField(max_length=255)
    user =  models.ForeignKey(User, default=6)
    approved = models.BooleanField(default=False)
    upload = models.FileField().....................
...................................................

因此，当文件被批准时，我希望new_user_model中的files字段增加1。并在管理站点中点击保存按钮。此外，如果批准＆＃39;如果没有选中，我需要＆＃39;文件＆＃39;字段减少一个。

怎么可以这样做？

更新：

最终，我希望能够显示用户在网站上拥有的文件数量。

谢谢，

Answer 1

您可以添加custom admin action，将文件标记为已批准。这些传递了一个请求对象，您可以使用它来抓取if(returnValue != "error") { self.delegate?.userLoggedIn(data: userEmail!) UserDefaults.standard.set(true, forKey: "isUserLoggedIn") self.dismiss(animated: true, completion: nil) }。（您可能想要从您的模型名称中删除“模型”，似乎有点多余，但我想个人品味:)

NewUserModel

话虽如此，如果你确实想跟踪谁批准了什么：

class FileModelAdmin(admin.ModelAdmin):
    form = FileForm
    fields = ('title', 'description', 'categories', 'pub_date', 'submitted_date',   'author', 'user', 'approved', 'upload', 'vote')
    # ....
    actions = ['approve_files']
    def approve_files(self, request, queryset):
        # Queryset can be greater than 1
        queryset.update(approved=True)
        user = request.user
        # I keep wanting to put underscores in...
        user_files_count = user.newusermodel.files
        # Get the amount of Files in the query, may be more than one
        user.newusermodel.files = user_files_count + queryset.count()  
        user.newusermodel.save()

然后上面的管理操作就是：

class FileModel(models.Model):
    title = models.CharField(max_length=100)
    # ...
    approved_by = models.ForeignKey('auth.User')

您可以通过执行以下操作来获取用户的文件数：

def approve_files(self, request, queryset):
    # Queryset can be greater than 1
    queryset.update(approved_by=request.user)

Answer 2

我终于有机会完成这个？

from django.contrib import admin
from .models import FileModel
from django.contrib.auth.models import User
from .forms import FileForm
from crudapp.models import NewUserModel
#from django.db import models

from django.core.exceptions import PermissionDenied
from django.contrib import admin
from django.contrib.admin.actions import delete_selected as delete_selected_

# see https://gist.github.com/rudyryk/4190318
# overrides and recreates delete_selected
def delete_selected(modeladmin, request, queryset):
    if not modeladmin.has_delete_permission(request):
        raise PermissionDenied
    if request.POST.get('post'):
        for obj in queryset:
            obj.delete()
    else:
        return delete_selected_(modeladmin, request, queryset)
delete_selected.short_description = "Delete selected objects"

class FileModelAdmin(admin.ModelAdmin):
    form = FileForm
    fields = ('title', 'description', 'categories', 'pub_date', 'submitted_date', 'author', 'user', 'approved', 'upload', 'vote')
    # pass
    list_display = ['title', 'approved', 'author', 'user', 'categories', 'description', 'pub_date', 'submitted_date', 'upload', 'vote']
    actions = ['approve_files', 'delete_selected']

    def approve_files(self, request, obj):
        for qs in obj:
            print "run number..."
            author = qs.author
            adminApproved = qs.approved # approved status on admin site
            userInstance = User.objects.get(username=author)
            id = qs.id
            item = FileModel.objects.get(pk=id)
            approved = item.approved # approved status in FileModel
            id = userInstance.id
            item = NewUserModel.objects.get(user_id=id)
            print "existentialism"
            print "approved: %s" %(approved)
            print "adminApproved: %s" %(adminApproved)
            if(approved == False):
                item.files += 1
            item.save()
        obj.update(approved = True)
        #NewUserModel.save()
        #obj.save()

    def save_model(self, request, obj, form, change):
        id = obj.id
        item = FileModel.objects.get(pk=id)
        # Test if file 'approved' has been changed on admin site
        if(item.approved != obj.approved):
            author = obj.author
            userInstance = User.objects.get(username=author)
            id = userInstance.id
            item = NewUserModel.objects.get(user_id=id)
            if(obj.approved == True):
                item.files += 1
                item.save()
            else:
                item.files -= 1
                item.save()
        obj.save()

    def delete_model(self, request, queryset):
        print "we are inside delete_model()"
        author = queryset.author
        userInstance = User.objects.get(username=author)
        id = queryset.id
        item = FileModel.objects.get(pk=id)
        approved = item.approved # approved status in FileModel
        #filename=obj.profile_name+".xml"
        #os.remove(os.path.join(obj.type,filename))
        id = userInstance.id
        item = NewUserModel.objects.get(user_id=id)
        # -1 for file in filemodel only if approved
        if approved == True:
            item.files -= 1
            item.save()
            print "inner part of delete_model()"
        queryset.delete()

    # The 'Delete selected' action
    def delete_selected(self, request, queryset):
        print "we are inside delete_selected()"
        for obj in queryset:
            author = obj.author
            adminApproved = obj.approved # approved status on admin site
            userInstance = User.objects.get(username=author)
            id = obj.id
            item = FileModel.objects.get(pk=id)
            approved = item.approved # approved status in FileModel
            id = userInstance.id
            item = NewUserModel.objects.get(user_id=id)
            # For the case where a file is deleted but was approved yet
            if approved == True:
                item.files -= 1
                print "inner part of delete_selected()"
                item.save()
            print "running for each iteration of obj"
        queryset.delete()

admin.site.register(FileModel, FileModelAdmin)

计算每个用户上传和批准的文件

2 个答案: