Wie findet man Kreuzung von Django-Modellen?

Question

Ich habe drei Modelle Universitäten, Benutzertyp und Benutzer.Universitätsmodell enthalten Liste aller Universität und Benutzer-Typ enthalten zwei Arten von Benutzertyp Fakultät und Student und Benutzermodell enthält alle Benutzer.

Nun, was ich erreichen möchte, ist, alle Benutzer zu bekommen, die den Kreuzungen der Universität des Benutzertyps gehören. Angenommen, ich wählte abc Universität und Benutzer Typ Fakultät dann wie bekomme ich alle Benutzer von dieser abc Universität mit Fakultät Typ.

Kann meine Modelle helfen, besser zu verstehen: -

Universitätsmodell: -

from __future__ import unicode_literals 
from django.db import models 
from django.contrib.auth.models import User 

# WE ARE AT MODELS/UNIVERSITIES 

class Universities(models.Model): 
    id = models.IntegerField(db_column="id", max_length=11, help_text="") 
    name = models.CharField(db_column="name", max_length=255, help_text="") 
    abbreviation = models.CharField(db_column="abbreviation", max_length=255, help_text="") 
    address = models.CharField(db_column="address", max_length=255, help_text="") 
    status = models.BooleanField(db_column="status", default=False, help_text="") 
    createdAt = models.DateTimeField(db_column='createdAt', auto_now=True, help_text="") 
    modifiedAt = models.DateTimeField(db_column='modifiedAt', auto_now=True, help_text="") 
    updatedBy = models.ForeignKey(User,db_column="updatedBy",help_text="Logged in user updated by ......") 

    class Meta: 
     managed = False 
     get_latest_by = 'createdAt' 
     db_table = 'universities' 

mein Benutzertyp Modell: -

from __future__ import unicode_literals 
from django.contrib.auth.models import User 
from django.db import models 

# WE ARE AT MODELS/MASTER USERS TYPES 

class MasterUserTypes(models.Model): 
    id = models.IntegerField(db_column="id", max_length=11, help_text="") 
    userType = models.CharField(db_column='userType', max_length=255, help_text="") 
    description = models.CharField(db_column='desciption', max_length=255, help_text="") 
    status = models.BooleanField(db_column="status", default=False, help_text="") 
    createdAt = models.DateTimeField(db_column='createdAt', auto_now=True, help_text="") 
    modifiedAt = models.DateTimeField(db_column='modifiedAt', auto_now=True, help_text="") 
    updatedBy = models.ForeignKey(User, db_column='updatedBy', 
            help_text="Logged in user updated by ......") 

    class Meta: 
     managed = False 
     db_table = 'master_user_types' 

und Benutzer-Modelle: -

from __future__ import unicode_literals 
from django.db import models 
from django.contrib.auth.models import User 
from cms.models.masterUserTypes import MasterUserTypes 
from cms.models.universities import Universities 
from cms.models.departments import MasterDepartments 



# WE ARE AT MODELS/APPUSERS 

requestChoice = (
    ('male', 'male'), 
    ('female', 'female'), 
    ) 


class Users(models.Model): 
    id = models.IntegerField(db_column="id", max_length=11, help_text="") 
    userTypeId = models.ForeignKey(MasterUserTypes, db_column="userTypeId") 
    universityId = models.ForeignKey(Universities, db_column="universityId") 
    departmentId = models.ForeignKey(MasterDepartments , db_column="departmentId",help_text="") 
    name = models.CharField(db_column="name",max_length=255,help_text="") 
    username = models.CharField(db_column="username",unique=True, max_length=255,help_text="") 
    email = models.CharField(db_column="email",unique=True, max_length=255,help_text="") 
    password = models.CharField(db_column="password",max_length=255,help_text="") 
    bio = models.TextField(db_column="bio",max_length=500,help_text="") 
    gender = models.CharField(db_column="gender",max_length=6, choices=requestChoice,help_text="") 
    mobileNo = models.CharField(db_column='mobileNo', max_length=16,help_text="") 
    dob = models.DateField(db_column="dob",help_text="") 
    major = models.CharField(db_column="major",max_length=255,help_text="") 
    graduationYear = models.IntegerField(db_column='graduationYear',max_length=11,help_text="") 
    canAddNews = models.BooleanField(db_column='canAddNews',default=False,help_text="") 
    receivePrivateMsgNotification = models.BooleanField(db_column='receivePrivateMsgNotification',default=True ,help_text="") 
    receivePrivateMsg = models.BooleanField(db_column='receivePrivateMsg',default=True ,help_text="") 
    receiveCommentNotification = models.BooleanField(db_column='receiveCommentNotification',default=True ,help_text="") 
    receiveLikeNotification = models.BooleanField(db_column='receiveLikeNotification',default=True ,help_text="") 
    receiveFavoriteFollowNotification = models.BooleanField(db_column='receiveFavoriteFollowNotification',default=True ,help_text="") 
    receiveNewPostNotification = models.BooleanField(db_column='receiveNewPostNotification',default=True ,help_text="") 
    allowInPopularList = models.BooleanField(db_column='allowInPopularList',default=True ,help_text="") 
    xmppResponse = models.TextField(db_column='xmppResponse',help_text="") 
    xmppDatetime = models.DateTimeField(db_column='xmppDatetime', help_text="") 
    status = models.BooleanField(db_column="status", default=False, help_text="") 
    createdAt = models.DateTimeField(db_column='createdAt', auto_now=True, help_text="") 
    modifiedAt = models.DateTimeField(db_column='modifiedAt', auto_now=True, help_text="") 
    updatedBy = models.ForeignKey(User,db_column="updatedBy",help_text="Logged in user updated by ......") 
    lastPasswordReset = models.DateTimeField(db_column='lastPasswordReset',help_text="") 
    authorities = models.CharField(db_column="departmentId",max_length=255,help_text="") 

    class Meta: 
     managed = False 
     db_table = 'users' 

so ho W kann ich die Kreuzung finden .... entschuldigen Sie mich, wenn Sie irgendwelche Fehler finden. Thansk im Voraus

Answer 1

wird der Benutzer die Personalart und den Namen der Universität eingeben?

dann, was Sie tun können, ist wie

User.objects.filter(usertype_id=inputted_id, university_id=inputted_id)