在这种情况下如何制作 django model？

Question

I make a stock market project using django. So I want to make 2 database table.

1. table stocklist (ticker, name)
2. table stockPrice (code, date, price, open, high, close etc...)

I want to make second table name is stock ticker. so I though this is many to one relation. And I made django model.py

class StockList(models.Model):
    ticker= models.CharField(max_length=10,primary_key=True)
    company = models.CharField(max_length=50)
    last_update = models.DateTimeField()

class stockPrice(models.Model):
    ticker = models.ForeignKey('stockList', on_delete=models.CASCADE)
    date = models.DateTimeField()
    open = models.FloatField()      
    high =models.FloatField()      
    low = models.FloatField()       
    close = models.FloatField()     
    diff = models.FloatField()  
    volume = models.FloatField()

But it isn't work. How I make django model? And is it many to one relation? Thank you.

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I want to make DB like this. So Am I make all class in models.py? enter image description here

Answer 1

In class stockPrice , try to replace:

ticker = models.ForeignKey('stockList', on_delete=models.CASCADE)

with:

ticker = models.ForeignKey(StockList, to_field='ticker', on_delete=models.CASCADE)