Finish implementing risk models

core/models.py

@@ -112,7 +112,7 @@ class Account(models.Model):
     supported_symbols = models.JSONField(default=list)
     instruments = models.JSONField(default=list)
     currency = models.CharField(max_length=255, null=True, blank=True)
-    riskmodel = models.ForeignKey(
+    risk_model = models.ForeignKey(
         "core.RiskModel", on_delete=models.SET_NULL, null=True, blank=True
     )
 
@@ -383,6 +383,13 @@ class RiskModel(models.Model):
     name = models.CharField(max_length=255)
     description = models.TextField(null=True, blank=True)
     # Maximum amount of money to have lost from the initial balance to stop trading
-    maximum_loss_ratio = models.FloatField(default=0.05)
+    max_loss_percent = models.FloatField(default=0.05)
     # Maximum amount of money to risk on all open trades
-    maximum_risk_ratio = models.FloatField(default=0.05)
+    max_risk_percent = models.FloatField(default=0.05)
+    # Maximum number of trades
+    max_open_trades = models.IntegerField(default=10)
+    # Maximum number of trades per symbol
+    max_open_trades_per_symbol = models.IntegerField(default=2)
+
+    def __str__(self):
+        return self.name