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sql - 很多外键 - Django Admin

有一个SQL问题，添加这个模型一切正常，问题出在ADMIN。

当我将数据添加到每个表中时，通过单击 TYPE 中的 PAGE 和 ADMIN 页面加载速度很慢，安装 debug_toolbar 和 SQL 需要 17 秒来获取 TYPE 。当我尝试 PAGE 时，它​​给了我超时，我的问题是我的模型有什么问题？构造不好吗？

我的目标是这让我们举个例子:

http://www.example.com/audi/4doors/s4/sport/red/audi-url

基本上所有 6 个 url 都是动态的，我会在每个表中指定，并且在 PAGE 中作为下拉列表也在其他表中。这样做或优化模型的最佳方法是什么？

这是 TYPE 页面加载的屏幕截图:

截图:http://cl.ly/image/2931040E0t35

请帮忙谢谢

from django.db import models

class Client(models.Model):
    title = models.CharField(max_length=100, unique=True)
    def __unicode__(self):
        return self.title

class Category(models.Model):
    client = models.ForeignKey(Client, to_field='title')
    title = models.CharField(max_length=200, unique=True)
    def __unicode__(self):
        return self.title

class Subcategory(models.Model):
    client = models.ForeignKey(Client, to_field='title')
    category = models.ForeignKey(Category, to_field='title')
    title = models.CharField(max_length=200, unique=True)
    def __unicode__(self):
        return self.title

class Project(models.Model):
    client = models.ForeignKey(Client, to_field='title')
    category = models.ForeignKey(Category, to_field='title')
    subcategory = models.ForeignKey(Subcategory, to_field='title')
    title = models.CharField(max_length=200, unique=True)
    def __unicode__(self):
        return self.title

class Type(models.Model):
    client = models.ForeignKey(Client, to_field='title')
    category = models.ForeignKey(Category, to_field='title')
    subcategory = models.ForeignKey(Subcategory, to_field='title')
    project = models.ForeignKey(Project, to_field='title')
    title = models.CharField(max_length=200, unique=True)
    def __unicode__(self):
        return self.title

class Page(models.Model):
    client = models.ForeignKey(Client, to_field='title')
    category = models.ForeignKey(Category, to_field='title')
    subcategory = models.ForeignKey(Subcategory, to_field='title')
    project = models.ForeignKey(Project, to_field='title')
    type = models.ForeignKey(Type, to_field='title')
    pageurl = models.CharField(max_length=200)

也刚刚发现，当我从 admin.py 中删除 list_display 的外键时，它的工作速度非常快:
class ClientAdmin(admin.ModelAdmin):
    list_display = ('title',)
    admin.site.register(Client, ClientAdmin)

class CategoryAdmin(admin.ModelAdmin):
    list_display = ('client', 'title',)
    admin.site.register(Category, CategoryAdmin)

class SubcategoryAdmin(admin.ModelAdmin):
    list_display = ('client', 'category', 'title', )
    admin.site.register(Subcategory, SubcategoryAdmin)

class ProjectAdmin(admin.ModelAdmin):
    list_display = ('client', 'category', 'subcategory', 'title', )
    admin.site.register(Project, ProjectAdmin)

class TypeAdmin(admin.ModelAdmin):
    list_display = ('client', 'title', )
    admin.site.register(Type, TypeAdmin)

class PageAdmin(admin.ModelAdmin):
    list_display = ('client', )
    admin.site.register(Page, PageAdmin)

外键不能在 list_display 中？如何优化它们？

更新:
class Client(models.Model):
    title = models.CharField(max_length=100, unique=True, db_index=True)
    def __unicode__(self):
        return self.title

class Category(models.Model):
    client = models.ForeignKey(Client)
    title = models.CharField(max_length=200, unique=True)
    def __unicode__(self):
        return self.title

class Subcategory(models.Model):
    client = models.ForeignKey(Client)
    category = models.ForeignKey(Category)
    title = models.CharField(max_length=200, unique=True)
    def __unicode__(self):
        return self.title

class Project(models.Model):
    client = models.ForeignKey(Client)
    category = models.ForeignKey(Category)
    subcategory = models.ForeignKey(Subcategory)
    title = models.CharField(max_length=200, unique=True)
    def __unicode__(self):
        return self.title

class Type(models.Model):
    client = models.ForeignKey(Client)
    category = models.ForeignKey(Category)
    subcategory = models.ForeignKey(Subcategory)
    project = models.ForeignKey(Project)
    title = models.CharField(max_length=200, unique=True)
    def __unicode__(self):
        return self.title

class Page(models.Model):
    client = models.ForeignKey(Client)
    category = models.ForeignKey(Category)
    subcategory = models.ForeignKey(Subcategory)
    project = models.ForeignKey(Project)
    type = models.ForeignKey(Type)
    pageurl = models.CharField(max_length=200)

更新 2
from django.db import models


class Client(models.Model):
    title = models.CharField(max_length=100, primary_key=True)
    def __unicode__(self):
        return self.title

class Category(models.Model):
    client = models.ForeignKey(Client)
    title = models.CharField(max_length=200, primary_key=True)
    def __unicode__(self):
        return self.title

class Subcategory(models.Model):
    client = models.ForeignKey(Client)
    category = models.ForeignKey(Category)
    title = models.CharField(max_length=200, primary_key=True)
    def __unicode__(self):
        return self.title

class Project(models.Model):
    client = models.ForeignKey(Client)
    category = models.ForeignKey(Category)
    subcategory = models.ForeignKey(Subcategory)
    title = models.CharField(max_length=200, primary_key=True)
    def __unicode__(self):
        return self.title

class Type(models.Model):
    client = models.ForeignKey(Client)
    category = models.ForeignKey(Category)
    subcategory = models.ForeignKey(Subcategory)
    project = models.ForeignKey(Project)
    title = models.CharField(max_length=200, primary_key=True)
    def __unicode__(self):
        return self.title

class Page(models.Model):
    client = models.ForeignKey(Client)
    category = models.ForeignKey(Category)
    subcategory = models.ForeignKey(Subcategory)
    project = models.ForeignKey(Project)
    type = models.ForeignKey(Type)
    pageurl = models.CharField(max_length=200)

更新 3 - ADMIN.PY
class ClientAdmin(admin.ModelAdmin):

    list_display = ('title',)

admin.site.register(Client, ClientAdmin)

class CategoryAdmin(admin.ModelAdmin):

    list_display = ('client', 'title',)

admin.site.register(Category, CategoryAdmin)

class SubcategoryAdmin(admin.ModelAdmin):

    list_display = ('client', 'category', 'title', )

admin.site.register(Subcategory, SubcategoryAdmin)

class ProjectAdmin(admin.ModelAdmin):

        list_display = ('client', 'category', 'subcategory', 'title', )

admin.site.register(Project, ProjectAdmin)

class TypeAdmin(admin.ModelAdmin):

    list_display = ('client', 'category', 'subcategory', 'project', 'title', )

admin.site.register(Type, TypeAdmin)

class PageAdmin(admin.ModelAdmin):

   list_display = ('client', 'category', 'subcategory', 'project', 'type', 'pageurl', )

admin.site.register(Page, PageAdmin)

最佳答案

相反，您可以使用 django admin 的 raw_id_fields 选项。

admin.site.register(Client)

class CategoryAdmin(admin.ModelAdmin):

    raw_id_fields = ('client',)

admin.site.register(Category, CategoryAdmin)

class SubcategoryAdmin(admin.ModelAdmin):

    raw_id_fields = ('client', 'category')

admin.site.register(Subcategory, SubcategoryAdmin)

class ProjectAdmin(admin.ModelAdmin):

    raw_id_fields = ('client', 'category', 'subcategory')

admin.site.register(Project, ProjectAdmin)

class TypeAdmin(admin.ModelAdmin):

    raw_id_fields = ('client', 'category', 'subcategory', 'project')

admin.site.register(Type, TypeAdmin)

class PageAdmin(admin.ModelAdmin):

    raw_id_fields = ('client', 'category', 'subcategory', 'project', 'type')

admin.site.register(Page, PageAdmin)

关于sql - 很多外键 - Django Admin，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/12573659/

10-15 18:28
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