---
title: Pipe Answers from Dynamic Matrix or Panel
product: Form Library
description: Learn how to implement answer piping from a dynamic matrix or panel and show given answers as choice options in follow-up questions. View the demo to see code example for JavaScript.
framework: React
source: https://surveyjs.io/form-library/examples/pipe-answers-from-dynamic-matrix-or-panel/reactjs
index: https://surveyjs.io/form-library/examples/overview.md
---

# Pipe Answers from Dynamic Matrix or Panel (React)

You can populate the choice options of selection-based question types (Single- and Multi-Select Dropdown, Checkboxes, Radio Button Group) with answers copied from other selection-based question types (see the [Carry Forward Responses](/form-library/examples/survey-carry-forward/) demo). This example demonstrates a more advanced use case, in which choices are dynamically sourced from cell values of Dynamic Matrix and question values in Dynamic Panel.

Each choice item consists of a value saved in survey results and a text displayed in the UI. To construct a choice item, specify the following properties for a choice-based question:

- [`choicesFromQuestion`](https://surveyjs.io/form-library/documentation/api-reference/checkbox-question-model#choicesFromQuestion)\
The `name` of a Dynamic Matrix or Dynamic Panel.

- [`choiceValuesFromQuestion`](https://surveyjs.io/form-library/documentation/api-reference/checkbox-question-model#choiceValuesFromQuestion)\
The `name` of a matrix column or dynamic panel question that supplies choice values to be saved in survey results.

- [`choiceTextsFromQuestion`](https://surveyjs.io/form-library/documentation/api-reference/checkbox-question-model#choiceTextsFromQuestion)\
The `name` of a matrix column or dynamic panel question that supplies choice texts to display in the UI. If this property is `undefined`, choice values are both used as display texts and saved in survey results.

## Files

### `public/index.html`

```html
<div id="surveyElement" style="position: absolute; top: 0; left: 0; right: 0; bottom: 0; min-height: 100%; height:100%"></div>
```

### `src/SurveyComponent.jsx`

```js
import React from "react";
import { Model } from "survey-core";
import { Survey } from "survey-react-ui";
import "survey-core/survey-core.min.css";
import "./index.css";
import { json } from "./json";

function SurveyComponent() {
    const survey = new Model(json);
    survey.onComplete.add((sender, options) => {
        console.log(JSON.stringify(sender.data, null, 3));
    });
    return (<Survey model={survey} />);
}

export default SurveyComponent;
```

### `src/index.css`

```css
/* You can add your custom CSS here. */
```

### `src/index.js`

```js
import React from "react";
import { createRoot } from "react-dom/client";
import SurveyComponent from "./SurveyComponent";

const root = createRoot(document.getElementById("surveyElement"));
root.render(<SurveyComponent />);
```

### `src/json.js`

```js
export const json = {
  "elements": [
    {
      "type": "panel",
      "name": "workshopPanel",
      "elements": [
        {
          "type": "matrixdynamic",
          "name": "workshopList",
          "title": "Available Workshops",
          "description": "This table collects information about workshops in which attendees are interested. Users can add new rows to specify their preferences.",
          "defaultValue": [
            {
              "workshopName": "Creative Writing for Beginners",
              "timeSlot": "afternoon"
            },
            {
              "workshopName": "Introduction to Digital Photography",
              "timeSlot": "evening"
            },
            {
              "workshopName": "Healthy Cooking and Nutrition",
              "timeSlot": "morning"
            }
          ],
          "columns": [
            {
              "name": "workshopName",
              "title": "Workshop Name"
            },
            {
              "name": "timeSlot",
              "title": "Preferred Time Slot",
              "cellType": "dropdown",
              "choices": [
                {
                  "value": "morning",
                  "text": "Morning (9:00 AM - 12:00 PM)"
                },
                {
                  "value": "afternoon",
                  "text": "Afternoon (1:00 PM - 4:00 PM)"
                },
                {
                  "value": "evening",
                  "text": "Evening (5:00 PM - 8:00 PM)"
                }
              ]
            }
          ],
          "cellType": "text"
        },
        {
          "type": "dropdown",
          "name": "favioriteWorkshop",
          "title": "Which workshop are you most excited to attend?",
          "choicesFromQuestion": "workshopList",
          "choiceValuesFromQuestion": "workshopName"
        }
      ]
    },
    {
      "type": "panel",
      "name": "sessionPreferencesPanel",
      "elements": [
        {
          "type": "paneldynamic",
          "name": "sessionPreferences",
          "title": "Upcoming Sessions",
          "defaultValue": [
            {
              "sessionInformation": "Tech Innovations in AI",
              "sessionDescription": "Deep dive into the latest advancements in artificial intelligence."
            },
            {
              "sessionInformation": "Digital Marketing Strategies",
              "sessionDescription": "Discover effective digital marketing practices."
            },
            {
              "sessionInformation": "Sustainable Tech Solutions",
              "sessionDescription": "Explore innovations for a greener tomorrow."
            }
          ],
          "templateElements": [
            {
              "type": "text",
              "name": "sessionInformation",
              "title": "Session Information"
            },
            {
              "type": "comment",
              "name": "sessionDescription",
              "title": "Description",
              "maxLength": 100,
              "rows": 2
            }
          ]
        },
        {
          "type": "ranking",
          "name": "prefferedSessions",
          "title": "Rank the following sessions in order of preference:",
          "choicesFromQuestion": "sessionPreferences",
          "choiceValuesFromQuestion": "sessionInformation"
        }
      ]
    }
  ],
  "title": "Conference Attendee Survey"
};
```

### `src/theme.js`

```js
export const themeJson = {};
```

### `package.json`

```json
{
  "dependencies": {
    "react": "latest",
    "react-dom": "latest",
    "survey-core": "latest",
    "survey-react-ui": "latest"
  },
  "devDependencies": {
    "react-scripts": "latest"
  }
}
```

## Other Frameworks

- [Angular](https://surveyjs.io/form-library/examples/pipe-answers-from-dynamic-matrix-or-panel/angular.md)
- [Vue 3](https://surveyjs.io/form-library/examples/pipe-answers-from-dynamic-matrix-or-panel/vue3js.md)
- [jQuery](https://surveyjs.io/form-library/examples/pipe-answers-from-dynamic-matrix-or-panel/jquery.md)
- [Vanilla JS](https://surveyjs.io/form-library/examples/pipe-answers-from-dynamic-matrix-or-panel/vanillajs.md)