如何獲得外鍵的信息，當選擇到另一個表時，當選擇特定的鍵

Question

我有三個表，其中一個是曼德爾，村莊和財產，在屬性表中我已經鏈接曼陀羅和村莊與外鍵，現在當我選擇mandal，只有那個特定的村莊結果應該在django admin中以財產形式顯示。我也把曼達與村莊聯繫在一起。

#models.py 
from django.db import models 
from django.utils import timezone 

class Mandal(models.Model): 
    id = models.AutoField(
     primary_key=True, 
     db_column="Mandal_id", 
     verbose_name="Mandal Id", 
    ) 
    name = models.CharField(
     max_length=200, 
     db_column="Mandal_Name", 
     verbose_name="Mandal Name", 
     null=False, 
     blank=False, 
     help_text="Enter Mandal names only", 
     default=None, 
    ) 
    class Meta: 
     db_table = "Mandal" 
     verbose_name_plural = "Mandal" 

    def __str__(self): 
     return self.name 

class Village(models.Model): 
    id = models.AutoField(
     primary_key=True, 
     db_column="Village_id", 
     verbose_name="Village Id", 
    ) 
    name = models.CharField(
     max_length=200, 
     db_column="Village_Name", 
     verbose_name="Village Name", 
     null=False, 
     blank=False, 
     help_text="Enter village names only", 
     default=None, 
    ) 
    mandal_id = models.ForeignKey(
     Mandal, 
     db_column="Mandal_id", 
     verbose_name="Mandal Name", 
    ) 

    class Meta: 
     db_table = "Village" 
     verbose_name_plural="Village" 

    def __str__(self): 
     return self.name 

class Properties(models.Model): 
    id = models.BigAutoField(
     primary_key=True, 
     db_column="Property_id", 
     verbose_name="Property Id" 
    ) 
    created_on = models.DateField(
     auto_now=False, 
     auto_now_add=False, 
     default=timezone.now(), 
    ) 
    area = models.BigIntegerField(
     default=0, 
     db_column="Property_Area", 
     verbose_name="Property Area", 
     help_text="Please enter area in square feet", 
     validators=[], 
    ) 
    mandal_location = models.ForeignKey(
     Mandal, 
     db_column="Mandal_id", 
     verbose_name="Mandal Name", 
     default=None, 
    ) 
    village_location = models.ForeignKey(
     Village, 
     db_column="Village_id", 
     verbose_name="Village Name", 
     default=None, 
    ) 

    description = models.TextField(
     default=None, 
     db_column="Property_description", 
     verbose_name="Property Description", 
    ) 
    features = models.CharField(
     default=None, 
     db_column="Property_Features", 
     verbose_name="Property Features", 
     null=True, 
     blank=True, 
     help_text="Add Property Fetures", 
     max_length=1000, 
    ) 
    additional_features = models.CharField(
     default=None, 
     db_column="Property_Additional_Features", 
     verbose_name="Additional Features", 
     null=True, 
     blank=True, 
     help_text="Add Property Fetures", 
     max_length=1000 
    ) 

    class Meta: 
     db_table = "Properties" 
     verbose_name_plural = "Property" 

    def __str__(self): 
     return "Pr-{i}".format(i=self.id) 

#admin.py 
from django.contrib import admin 
from whiteindia.models import Mandal,Village,Properties 

class MandalAdmin(admin.ModelAdmin): 
    list_display = ['id','name'] 

    class Meta: 
     model = Mandal 

class VillageAdmin(admin.ModelAdmin): 
    list_display = ['id','name','mandal_id'] 
    list_filter = ['mandal_id'] 

    class Meta: 
     model = Village 

class PropertiesAdmin(admin.ModelAdmin): 
    list_display = ['id', 'area','village_location','mandal_location'] 

    class Meta: 
     model = Properties 

admin.site.register(Mandal,MandalAdmin) 
admin.site.register(Village,VillageAdmin) 
admin.site.register(Properties,PropertiesAdmin) 

那麼如何讓村莊名單到一個特定的曼達爾在物業管理中，當我們在瀏覽器窗口中輸入admin /屬性

Answer 1

我不太清楚你是怎麼想顯示你的數據，但你有沒有看過inlineModelAdmin。

管理界面能夠在與父模型相同的頁面上編輯模型。這些被稱爲內聯。

我用這個在我的管理頁面也從也可以修改另一個表顯示所有子記錄編輯記錄。在你的情況下，你可以用它來點擊一個屬性來編輯它，並且在屬性下的編輯頁面上，它可以顯示所有與它相關的曼陀羅或者村莊。如果你想鏈接3個表格，你可以使用'through'選項。在退房的文檔：

https://docs.djangoproject.com/en/1.11/ref/contrib/admin/#django.contrib.admin.InlineModelAdmin