Merge pull request #5299 from kevinjulian/feat/kevinjulian/add-buy-signal-name

Add buy signal name

docs/strategy-advanced.md

@@ -114,6 +114,36 @@ class AwesomeStrategy(IStrategy):
 
 See [Dataframe access](#dataframe-access) for more information about dataframe use in strategy callbacks.
 
+## Buy Tag
+
+When your strategy has multiple buy signals, you can name the signal that triggered.
+Then you can access you buy signal on `custom_sell`
+
+```python
+def populate_buy_trend(self, dataframe: DataFrame, metadata: dict) -> DataFrame:
+    dataframe.loc[
+        (
+            (dataframe['rsi'] < 35) &
+            (dataframe['volume'] > 0)
+        ),
+        ['buy', 'buy_tag']] = (1, 'buy_signal_rsi')
+
+    return dataframe
+
+def custom_sell(self, pair: str, trade: Trade, current_time: datetime, current_rate: float,
+                    current_profit: float, **kwargs):
+    dataframe, _ = self.dp.get_analyzed_dataframe(pair, self.timeframe)
+    last_candle = dataframe.iloc[-1].squeeze()
+    if trade.buy_tag == 'buy_signal_rsi' and last_candle['rsi'] > 80:
+        return 'sell_signal_rsi'
+    return None
+
+```
+
+!!! Note
+    `buy_tag` is limited to 100 characters, remaining data will be truncated.
+
+
 ## Custom stoploss
 
 The stoploss price can only ever move upwards - if the stoploss value returned from `custom_stoploss` would result in a lower stoploss price than was previously set, it will be ignored. The traditional `stoploss` value serves as an absolute lower level and will be instated as the initial stoploss.

docs/webhook-config.md

@@ -83,6 +83,7 @@ Possible parameters are:
 * `fiat_currency`
 * `order_type`
 * `current_rate`
+* `buy_tag`
 
 ### Webhookbuycancel
 
@@ -100,6 +101,7 @@ Possible parameters are:
 * `fiat_currency`
 * `order_type`
 * `current_rate`
+* `buy_tag`
 
 ### Webhookbuyfill
 
@@ -115,6 +117,7 @@ Possible parameters are:
 * `stake_amount`
 * `stake_currency`
 * `fiat_currency`
+* `buy_tag`
 
 ### Webhooksell