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---
title: Arrays in Code-Aktionen verarbeiten
description: Erfahren Sie, wie Sie Array-Eingaben in Code-Aktionen innerhalb von Workflows korrekt verarbeiten.
---
Bei der Arbeit mit Arrays in Code-Aktionen stoßen Sie möglicherweise auf zwei häufige Herausforderungen:
1. **Als Strings übergebene Arrays** — Daten aus externen Systemen oder vorherigen Schritten kommen als String statt als echtes Array an
2. **Einzelne Elemente nicht auswählbar** — Sie können nur das gesamte Array auswählen, nicht bestimmte Felder darin
Beides lässt sich mit einem Code-Knoten lösen.
## Arrays aus Strings parsen
Arrays werden zwischen Workflow-Schritten häufig als Strings oder JSON übergeben, statt als native Arrays. Dies geschieht, wenn:
* Empfangen von Daten aus externen APIs über HTTP Request
* Verarbeiten von Webhook-Payloads
* Weitergeben von Daten zwischen Workflow-Schritten
**Lösung**: Fügen Sie dieses Muster am Anfang Ihrer Code-Aktion hinzu:
```javascript
export const main = async (params: {
users: any;
}): Promise<object> => {
const { users } = params;
// Handle input that may come as a string or an array
const usersFormatted = typeof users === "string" ? JSON.parse(users) : users;
// Now you can safely work with usersFormatted as an array
return {
users: usersFormatted.map((user) => ({
...user,
activityStatus: String(user.activityStatus).toUpperCase(),
})),
};
};
```
Die entscheidende Zeile `typeof users === "string" ? JSON.parse(users) : users` prüft, ob die Eingabe ein String ist, parst sie bei Bedarf oder verwendet sie direkt, wenn sie bereits ein Array ist.
## Einzelne Felder aus Arrays extrahieren
Ein Webhook kann ein Array wie `answers: [...]` zurückgeben, aber in nachfolgenden Workflow-Schritten können Sie nur das **gesamte Array** auswählen — nicht einzelne Elemente darin.
**Lösung**: Fügen Sie einen Code-Knoten hinzu, um bestimmte Felder zu extrahieren und als strukturiertes Objekt zurückzugeben:
```javascript
export const main = async (params: {
answers: any;
}): Promise<object> => {
const { answers } = params;
// Handle input that may come as a string or an array
const answersFormatted = typeof answers === "string"
? JSON.parse(answers)
: answers;
// Extract specific fields from the array
const firstname = answersFormatted[0]?.text || "";
const name = answersFormatted[1]?.text || "";
return {
answer: {
firstname,
name
}
};
};
```
Der Code-Knoten gibt statt eines Arrays ein strukturiertes Objekt zurück. In den folgenden Schritten können Sie nun einzelne Felder wie `answer.firstname` und `answer.name` aus der Variablenauswahl auswählen.
<Tip>
**Möchten Sie über das Array iterieren, anstatt Felder zu extrahieren?** Wenn ein Code- oder Logikfunktionsschritt ein Array auf oberster Ebene zurückgibt, können Sie es direkt in einen [Iterator](/l/de/user-guide/workflows/capabilities/use-iterator) einspeisen: Wählen Sie die Option **Whole list** des Schritts als Eingabe des Iterators und verweisen Sie dann innerhalb der Schleife mit `{{iterator.currentItem}}` auf jedes Element. In diesem Fall müssen Sie das Array nicht in ein Objekt umstrukturieren.
</Tip>
<Tip>
Klicken Sie auf das quadratische Symbol oben rechts im Code-Editor, um ihn im Vollbild anzuzeigen — hilfreich, da die Standardbreite des Editors begrenzt ist.
</Tip>