Выборка данных из связанных таблиц

class MainTable(models.Model):
    name = models.CharField(blank=False, max_length=100)
    isactive = models.BooleanField(default=True)
 
class Table(models.Model):
    name = models.ForeignKey(MainTable, on_delete=models.CASCADE)
    somthing = models.CharField(blank=False, max_length=50)
 
class ImagesTable(models.Model):
    name = models.ForeignKey(Table, on_delete=models.CASCADE)
    image = models.ImageField(blank=True, upload_to=path)

item = get_object_or_404(MainTable, pk = some_pk)

items_table = item.table_set.all()

items_table = Table.objects.filter(maintable_id = some_pk)

items_image_table = []
for el in items_table :
        if str(el.maintable_id) == some_pk:
            middlevar = ImagesTable.objects.filter(name = el.id)
            for i in middlevar :
                items_image_table .append(get_object_or_404(ImagesTable, id = i.id))

class MainTable(models.Model):
    name = models.CharField(blank=False, max_length=100)
    isactive = models.BooleanField(default=True)
 
class Table(models.Model):
    name = models.ForeignKey(MainTable, on_delete=models.CASCADE, related_name="name_table")
    somthing = models.CharField(blank=False, max_length=50)
 
class ImagesTable(models.Model):
    name = models.ForeignKey(Table, on_delete=models.CASCADE, related_name="name_images_table")
    image = models.ImageField(blank=True, upload_to=path)

item = get_object_or_404(MainTable, pk = some_pk)
items_table = item.name_table__set.all()
image_items = item.name_images_table__set.all()