TON Connect for Vue

The recommended SDK for Vue Apps is a UI Vue SDK. A Vue component provides a high-level way to interact with TON Connect.

Implementation

Installation

To start integrating TON Connect into your DApp, install the @townsquarelabs/ui-vue package. You can use npm or yarn for this purpose:

npm

npm i @townsquarelabs/ui-vue

Yarn

yarn add @townsquarelabs/ui-vue

pnpm

pnpm add @townsquarelabs/ui-vue

TON Connect initiation

Add TonConnectUIProvider to the root of the app. You can specify UI options using props.

tip

See all available options.

Place all TON Connect UI hooks call and the <TonConnectButton /> inside <TonConnectUIProvider>.

  <template>
    <TonConnectUIProvider :options="options">
      <!-- Your app -->
    </TonConnectUIProvider>
  </template>

  <script>
  import { TonConnectUIProvider } from '@townsquarelabs/ui-vue';
  
  export default {
    components: {
      TonConnectUIProvider
    },
    setup(){
      const options = {
        manifestUrl:"https://<YOUR_APP_URL>/tonconnect-manifest.json",
      };
      return {
        options
      }
    }
  }
  </script>

Connect to the wallet

TonConnectButton is a universal UI component for initializing connection. After the wallet is connected, it transforms into a wallet menu. You should place it in the top right corner of your app.

<template>
  <header>
    <span>My App with Vue UI</span>
    <TonConnectButton/>
  </header>
</template>

<script>
import { TonConnectButton } from '@townsquarelabs/ui-vue';

export default {
  components: {
    TonConnectButton
  }
}
</script>

You can also add class and style props to the button. Note that you cannot pass a child to the TonConnectButton.

<TonConnectButton class="my-button-class" :style="{ float: 'right' }"/>

Redirects

If you want to redirect the user to a specific page after wallet connection, you can use the useTonConnectUI hook and customize your return strategy.

Telegram Mini Apps

If you want to redirect the user to a Telegram Mini App after wallet connection, you can customize the TonConnectUIProvider element:

<template>
  <TonConnectUIProvider :options="options">
    <!-- Your app -->
  </TonConnectUIProvider>
</template>

<script>
import { TonConnectUIProvider } from '@townsquarelabs/ui-vue';

export default {
  components: {
    TonConnectUIProvider,
  },
  setup() {
    const options = {
      actionsConfiguration: { twaReturnUrl: 'https://t.me/<YOUR_APP_NAME>' },
    };
    return {
      options,
    };
  },
};
</script>

Read more in SDK documentation

UI customization

To customize UI of the modal, you can use the useTonConnectUI hook and the setOptions function. See more about the useTonConnectUI hook in the Hooks section.

Hooks

useTonAddress

Use it to get the user's current ton wallet address. Pass the boolean parameter isUserFriendly to choose the address format. The hook will return an empty string if the wallet is not connected.

<template>
  <div v-if="address">
    <span>User-friendly address: {{ userFriendlyAddress }}</span>
    <span>Raw address: {{ rawAddress }}</span>
  </div>
</template>

<script>
import { useTonAddress } from '@townsquarelabs/ui-vue';

export default {
  setup() {
    const userFriendlyAddress = useTonAddress();
    const rawAddress = useTonAddress(false);

    return {
      userFriendlyAddress,
      rawAddress
    }
  }
}
</script>

useTonWallet

Use it to get the user's current ton wallet. If the wallet is not connected, the hook will return null.

<template>
  <div v-if="wallet">
    <span>Connected wallet: {{ wallet.name }}</span>
    <span>Device: {{ wallet.device.appName }}</span>
  </div>
</template>

<script>
import { useTonWallet } from '@townsquarelabs/ui-vue';

export default {
  setup() {
    const wallet = useTonWallet();

    return {
      wallet
    }
  }

}
</script>

useTonConnectModal

Use this hook to access the functions for opening and closing the modal window. The hook returns an object with the current modal state and methods to open and close the modal.

<template>
  <div>
    <div>Modal state: {{ state?.status }}</div>
    <button @click="open">Open modal</button>
    <button @click="close">Close modal</button>
  </div>
</template>

<script>
import { useTonConnectModal } from '@townsquarelabs/ui-vue';

export default {
  setup() {
    const { state, open, close } = useTonConnectModal();
    return { state, open, close };
  }
};
</script>

useTonConnectUI

Use it to get access to the TonConnectUI instance and UI options updating function.

Show the example

<template>
  <div>
    <button @click="sendTransaction">Send transaction</button>
    <div>
      <label>language</label>
      <select @change="onLanguageChange($event.target.value)">
        <option value="en">en</option>
        <option value="ru">ru</option>
        <option value="zh">zh</option>
      </select>
    </div>
  </div>
</template>

<script>
import { Locales, useTonConnectUI } from '@townsquarelabs/ui-vue';

export default {
  name: 'Settings',
  setup() {
    const [tonConnectUI, setOptions] = useTonConnectUI();

    const onLanguageChange = (lang) => {
      setOptions({ language: lang as Locales });
    };

    const myTransaction = {
      validUntil: Math.floor(Date.now() / 1000) + 60, // 60 sec
      messages: [
        {
          address: "EQBBJBB3HagsujBqVfqeDUPJ0kXjgTPLWPFFffuNXNiJL0aA",
          amount: "20000000",
          // stateInit: "base64bocblahblahblah==" // just for instance. Replace with your transaction initState or remove
        },
        {
          address: "EQDmnxDMhId6v1Ofg_h5KR5coWlFG6e86Ro3pc7Tq4CA0-Jn",
          amount: "60000000",
          // payload: "base64bocblahblahblah==" // just for instance. Replace with your transaction payload or remove
        }
      ]
    }

    const sendTransaction = () => {
      tonConnectUI.sendTransaction(myTransaction);
    };

    return { onLanguageChange, sendTransaction };
  }
};
</script>

See more about TonConnectUI instance methods

See more about the setOptions function

useIsConnectionRestored

useIsConnectionRestored indicates the current status of the connection restoring process. You can use it to detect when the connection restoring process is finished.

<template>
  <div>
    <div v-if="!connectionRestored">Please wait...</div>
    <MainPage v-else />
  </div>
</template>

<script>
import { useIsConnectionRestored } from '@townsquarelabs/ui-vue';

export default {
  name: 'EntrypointPage',
  setup() {
    const connectionRestored = useIsConnectionRestored();
    return { connectionRestored };
  }
};
</script>

Usage

Let's take a look at how to use the Vue UI SDK in practice.

Sending transactions

Send Toncoins to a specific address:

<template>
  <div>
    <button @click="sendTransaction">Send transaction</button>
  </div>
</template>

<script>
import { useTonConnectUI } from '@townsquarelabs/ui-vue';

export default {
  name: 'Settings',
  setup() {
    const [tonConnectUI, setOptions] = useTonConnectUI();


    const myTransaction = {
      validUntil: Math.floor(Date.now() / 1000) + 60, // 60 sec
      messages: [
        {
          address: "EQBBJBB3HagsujBqVfqeDUPJ0kXjgTPLWPFFffuNXNiJL0aA",
          amount: "20000000",
          // stateInit: "base64bocblahblahblah==" // just for instance. Replace with your transaction initState or remove
        },
        {
          address: "EQDmnxDMhId6v1Ofg_h5KR5coWlFG6e86Ro3pc7Tq4CA0-Jn",
          amount: "60000000",
          // payload: "base64bocblahblahblah==" // just for instance. Replace with your transaction payload or remove
        }
      ]
    }

    const sendTransaction = () => {
      tonConnectUI.sendTransaction(myTransaction);
    };

    return { sendTransaction };
  }
};
</script>

Understanding transaction status by hash

Learn the principle explained in payment processing using the tonweb library.

Add connect request parameters: ton_proof

tip

Understand how to sign and verify messages: Signing and Verification

Use the tonConnectUI.setConnectRequestParameters function to pass your connect request parameters.

This function takes one parameter:

loading

Set state to 'loading' while waiting for your backend's response. If a user opens the connect wallet modal, he will see a loader.

import { ref } from 'vue';
import { useTonConnectUI } from '@townsquarelabs/ui-vue';

const tonConnectUI = useTonConnectUI();

tonConnectUI.setConnectRequestParameters({
    state: 'loading'
});

ready

Set the state to 'ready' and define the tonProof value. Apply the parameters passed to the connect request using QR and a universal link.

import { ref } from 'vue';
import { useTonConnectUI } from '@townsquarelabs/ui-vue';

const tonConnectUI = useTonConnectUI();

tonConnectUI.setConnectRequestParameters({
    state: 'ready',
    value: {
        tonProof: '<your-proof-payload>'
    }
});

remove loading

Remove the loader if enabled via state: 'loading'. For example, if you received an error instead of a response from your backend.

Connect requests will be created without any additional parameters.

import { ref } from 'vue';
import { useTonConnectUI } from '@townsquarelabs/ui-vue';

const tonConnectUI = useTonConnectUI();

tonConnectUI.setConnectRequestParameters(null);

You can call tonConnectUI.setConnectRequestParameters multiple times if your tonProof payload has a bounded lifetime. For instance, you can refresh connect request parameters every 10 minutes.

import { ref } from 'vue';
import { useTonConnectUI } from '@townsquarelabs/ui-vue';

const tonConnectUI = useTonConnectUI();

// enable ui loader
tonConnectUI.setConnectRequestParameters({ state: 'loading' });

// fetch you tonProofPayload from the backend
const tonProofPayload: string | null = await fetchTonProofPayloadFromBackend();

if (!tonProofPayload) {
    // remove loader, connect request will be without any additional parameters
    tonConnectUI.setConnectRequestParameters(null);
} else {
    // add tonProof to the connect request
    tonConnectUI.setConnectRequestParameters({
        state: "ready",
        value: { tonProof: tonProofPayload }
    });
}

You can find the ton_proof result in the wallet object when the wallet is connected:

import { ref, onMounted } from 'vue';
import { useTonConnectUI } from '@townsquarelabs/ui-vue';

const tonConnectUI = useTonConnectUI();

onMounted(() =>
    tonConnectUI.onStatusChange(wallet => {
        if (wallet.connectItems?.tonProof && 'proof' in wallet.connectItems.tonProof) {
            checkProofInYourBackend(wallet.connectItems.tonProof.proof, wallet.account);
        }
}));

Wallet disconnection

Call to disconnect the wallet:

import { useTonConnectUI } from '@townsquarelabs/ui-vue';

const [tonConnectUI] = useTonConnectUI();

await tonConnectUI.disconnect();

Troubleshooting

Animations not working

If you are experiencing issues with animations not working in your environment, it might be due to a lack of support for the Web Animations API. To resolve this issue, you can use the web-animations-js polyfill.

Using npm

To install the polyfill, run the following command:

npm install web-animations-js

Then, import the polyfill into your project:

import 'web-animations-js';

Using CDN

Alternatively, you can include the polyfill via CDN by adding the following script tag to your HTML:

<script src="https://www.unpkg.com/web-animations-js@latest/web-animations.min.js"></script>

Both methods will provide a fallback implementation of the Web Animations API and should resolve your animation issues.

Examples

• Demo DApp - Example of a DApp with @townsquarelabs/ui-vue.

See also

• TON Connect for React apps
• TON Connect for HTML/JS apps

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