How to get exact values of the foreignkeys in django admin - django

Question

class Mio_terminal(models.Model):
terminal = models.CharField(max_length = 50)
gate = models.CharField(max_length = 50)
gate_status = models.CharField(max_length = 50, default = 'open') #open, occupied, under_maintenance
class Meta:
unique_together = [['terminal', 'gate']]
class Mio_flight_schedule(models.Model):
fact_guid = models.CharField(max_length=64, primary_key=True)
airline_flight_key = models.ForeignKey(Mio_airline, related_name = 'flight_key', on_delete = models.CASCADE)
source = models.CharField(max_length = 100)
destination = models.CharField(max_length = 100)
arrival_departure = models.CharField(max_length=12)
time = models.DateTimeField()
gate_code = models.ForeignKey(Mio_terminal, related_name = 'terminal_gate', null = True, on_delete = models.SET_NULL)
baggage_carousel = models.CharField(max_length = 100)
remarks = models.CharField(max_length = 100)
terminal_code = models.ForeignKey(Mio_terminal, related_name = 'airport_terminal', null = True, on_delete = models.SET_NULL)
These are models for terminal and flight schedules.
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I want to have a terminal name and gate code instead of the object ...
I know we can get this by using the str method in models....but we get only a single value for this...not more than one
I want to use the terminal as a foreign_key for terminal_code in the flight_schedule model and the gate as a gate_code.I am getting terminal_code _gate code as a string ...but it's not reflecting as separate entities...I don't want the combined string.....I want when I click on the terminal ...only the terminal dropdown should display..and the same for the gate code
please let me know how should I deal with this.

Answer 1

You can change the display name of models in django admin interface by using def __str__(self).
So for in your code add this function after the Mio_terminal class :
class Mio_terminal(models.Model):
terminal = models.CharField(max_length = 50)
gate = models.CharField(max_length = 50)
gate_status = models.CharField(max_length = 50, default = 'open') #open, occupied, under_maintenance
class Meta:
unique_together = [['terminal', 'gate']]
# add this
def __str__(self):
return str(self.terminal+' '+self.gate)