Improve posting trades to OANDA and make everything more robust

core/models.py

@@ -77,6 +77,8 @@ class Account(models.Model):
     api_secret = models.CharField(max_length=255)
     sandbox = models.BooleanField(default=False)
     supported_symbols = models.JSONField(default=list)
+    instruments = models.JSONField(default=list)
+    currency = models.CharField(max_length=255, null=True, blank=True)
 
     def __str__(self):
         name = f"{self.name} ({self.exchange})"
@@ -90,9 +92,13 @@ class Account(models.Model):
         """
         client = self.get_client()
         if client:
-            supported_symbols = client.get_supported_assets()
+            response = client.get_instruments()
+            supported_symbols = client.get_supported_assets(response)
+            currency = client.get_account()["currency"]
             log.debug(f"Supported symbols for {self.name}: {supported_symbols}")
             self.supported_symbols = supported_symbols
+            self.instruments = response
+            self.currency = currency
         super().save(*args, **kwargs)
 
     def get_client(self):