django model.objects.values() return related id instead of title

I want to get Chapter model data as json , i used values() method and it works but it return book id not the book title and i want the book title

models.py

class Books(models.Model):
    title =  models.CharField(max_length=200 , unique=True)
    slug = models.SlugField(max_length=255,unique=True)
    data_id =  models.IntegerField(unique=True)

    def __str__(self):
        return  str(self.title)




class Chapter(models.Model):
    book_id = models.ForeignKey(Books,on_delete=models.CASCADE)
    source = models.CharField(max_length=100,blank=True)
    chapter = models.CharField(max_length=10)
    date =  models.DateTimeField(auto_now_add=True)
    def __str__(self):
        return  str(self.chapter)+" "+str(self.book_id)

views.py

class BookChapters(LoginRequiredMixin,View):
    def get(self,request):
        chapters =  Chapter.objects.values()
        return JsonResponse(list(chapters),safe=False)

json ouput

[
{
id: 1,
book_id: 237,
source: "nobel",
chapter: "18",
date: "2022-06-26T17:50:26Z"
},
{
id: 2,
book_id: 237,
source: "noble",
chapter: "19",
date: "2022-06-26T17:50:28Z"
}]

Answer

You can use ‘FK__COL’ in the values():

chapters = Chapter.objects.values('id', 'book_id__title', 'source', 'chapter', 'date')
return JsonResponse(list(chapters), safe=False)

Doc reference: https://docs.djangoproject.com/en/4.0/ref/models/querysets/#values