Merging two fields from different table

[Kala Rani]

My models.py

class Regions(models.Model):

 region_name = models.CharField(max_length=255)

 class Locations(models.Model): 

 region = models.ForeignKey(Regions, on_delete=models.CASCADE,blank=True,null=True) name = models.CharField(max_length=255)

How to do this query in django?

select locations.name,regions.region_name

  from locations

 inner join regions on locations.region_id = regions.id order by locations.name;

I want to show this Location name,Region name in v-select tag like 

location name-region name