How do i create views.py with Django queryset filter to compare Specific value of two different tables in django?

Question

 JOB_TYPE = ( ('1', "Full time"), ('2', "Part time"), ('3', "Internship"), ) class Job(models.Model): user = models.ForeignKey(User, on_delete=models.CASCADE) title = models.CharField(max_length=300) description = models.TextField() location = models.CharField(max_length=150) type = models.CharField(choices=JOB_TYPE, max_length=10) category = models.CharField(max_length=100) last_date = models.DateTimeField() skillRequired1 = models.CharField(max_length=100, default="") skillRequired2 = models.CharField(max_length=100, blank=True, null=True) work_experience = models.IntegerField(default=0) company_name = models.CharField(max_length=100) company_description = models.CharField(max_length=300) website = models.CharField(max_length=100, default="") created_at = models.DateTimeField(default=timezone.now) filled = models.BooleanField(default=False) def __str__(self): return self.title class EmployeeProfile(models.Model): user = models.OneToOneField(User, on_delete=models.CASCADE) title = models.CharField(max_length=300) location = models.CharField(max_length=150) type = models.CharField(choices=JOB_TYPE, max_length=10) work_experience = models.IntegerField(default=0) category = models.CharField(max_length=100) emailContact = models.CharField(max_length=100, default="") skill1 = models.CharField(max_length=100) skill2 = models.CharField(max_length=100) skill3 = models.CharField(max_length=100, blank=True) skill4 = models.CharField(max_length=100, blank=True) about_me = models.TextField() images = models.ImageField(upload_to='employeeProfiles', default='default.jpg') def __str__(self): return f'{self.user.first_name} Profile' 

i have created two database tables 'Job' and other is "employeeProfile".. I want to Compare and match 'title' of both and want to show only those 'title' which is present in Job but not in 'employeeProfile'.These two tables are in two different Models.

Answer 1

i'd try something like that:

(will probably require to have a default='' or blank=True in the field declaration)

qs = EmployeeProfile.objects.filter(title='').exclude(user__title='')

you can resolve relation with the double __

you can also add null=True to the title definition to be able to use:

qs = EmployeeProfile.objects.filter(user__title__isnull=False, title__isnull=True)