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page_type description products languages extensions urlFragment
sample
Hello world Messaging Extension that accepts parameters and returns a card. Also, how to receive a forwarded message as a parameter in a Messaging Extension.
office-teams
office
office-365
javascript
nodejs
contentType createdDate
samples
07/07/2021 01:38:27 PM
officedev-microsoft-teams-samples-msgext-action-quickstart-js

Bots/Messaging Extension

Bots allow users to interact with your web service through text, interactive cards, and task modules. Messaging extensions allow users to interact with your web service through buttons and forms in the Microsoft Teams client. They can search, or initiate actions, in an external system from the compose message area, the command box, or directly from a message.

Included Features

  • Bots
  • Message Extensions
  • Action Commands

Interaction with app

message ext module

Try it yourself - experience the App in your Microsoft Teams client

Please find below demo manifest which is deployed on Microsoft Azure and you can try it yourself by uploading the app package (.zip file link below) to your teams and/or as a personal app. (Sideloading must be enabled for your tenant, see steps here).

Messaging Extension: Manifest

Prerequisites

Dependencies

Run the app (Using Teams Toolkit for Visual Studio Code)

The simplest way to run this sample in Teams is to use Teams Toolkit for Visual Studio Code.

  1. Ensure you have downloaded and installed Visual Studio Code
  2. Install the Teams Toolkit extension
  3. Select File > Open Folder in VS Code and choose this samples directory from the repo
  4. Using the extension, sign in with your Microsoft 365 account where you have permissions to upload custom apps
  5. Select Debug > Start Debugging or F5 to run the app in a Teams web client.
  6. In the browser that launches, select the Add button to install the app to Teams.

If you do not have permission to upload custom apps (sideloading), Teams Toolkit will recommend creating and using a Microsoft 365 Developer Program account - a free program to get your own dev environment sandbox that includes Teams.

Run the app (Manually Uploading to Teams)

  1. Register a new application in the Microsoft Entra ID – App Registrations portal.

  2. Setup for Bot

    • Also, register a bot with Azure Bot Service, following the instructions here.
    • Ensure that you've enabled the Teams Channel
    • While registering the bot, use https://<your_tunnel_domain>/api/messages as the messaging endpoint.

    NOTE: When you create your app registration, you will create an App ID and App password - make sure you keep these for later.

  3. Setup NGROK

  • Run ngrok - point to port 3978

    ngrok http 3978 --host-header="localhost:3978"

    Alternatively, you can also use the dev tunnels. Please follow Create and host a dev tunnel and host the tunnel with anonymous user access command as shown below:

    devtunnel host -p 3978 --allow-anonymous
  1. Setup for code

  • Clone the repository

    git clone https://github.com/OfficeDev/Microsoft-Teams-Samples.git

-In a terminal, navigate to samples/msgext-action-quickstart/js

  • Build npm install

  • Update the .env configuration for the bot to use the MicrosoftAppId and MicrosoftAppPassword. (Note the MicrosoftAppId is the AppId created in step 1 (Setup for Bot), the MicrosoftAppPassword is referred to as the "client secret" in step 1 (Setup for Bot) and you can always create a new client secret anytime.)

  1. Run your app

    npm start

  2. Setup Manifest for Teams

  • This step is specific to Teams.
    • Edit the manifest.json contained in the appManifest/ folder to replace with your MicrosoftAppId (that was created in step1.1 and is the same value of MicrosoftAppId in .env file) everywhere you see the place holder string {MicrosoftAppId} (depending on the scenario the Microsoft App Id may occur multiple times in the manifest.json)
    • Zip up the contents of the appManifest/ folder to create a manifest.zip
    • Upload the manifest.zip to Teams (in the left-bottom Apps view, click "Upload a custom app")

Note: If you are facing any issue in your app, please uncomment this line and put your debugger for local debug.

Running the sample

action command compose

compose extension result

action command from message

compose result from message action

Deploy to Teams

Start debugging the project by hitting the F5 key or click the debug icon in Visual Studio Code and click the Start Debugging green arrow button.

Further reading