Wasp•3mo ago

How can I display the user's credits on the navbar ?

How can I display the user's credits on the navbar with open saas template ?

29 Replies

Hi @2euxs. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave: ---------------------- To display the user's credits on the navbar, you would need to modify the TopNavbar.jsx file in the Open SaaS template. This file is responsible for rendering the navbar. First, you would need to fetch the user's credit data. You can do this by using the useAuth hook provided by Wasp. This hook allows you to access the currently logged-in user's data. Here is an example of how you can use it:

import { useAuth } from '@wasp/auth'

const TopNavbar = () => {
  const { user } = useAuth()

  // Rest of the component
}

import { useAuth } from '@wasp/auth'

const TopNavbar = () => {
  const { user } = useAuth()

  // Rest of the component
}

In this example, user is an object that contains the data of the currently logged-in user. If the user is not logged in, user will be null. Next, you would need to display the user's credits on the navbar. You can do this by adding a new element to the navbar that displays the user's credits. Here is an example:

<div>
  {user ? `Credits: ${user.credits}` : 'Not logged in'}
</div>

<div>
  {user ? `Credits: ${user.credits}` : 'Not logged in'}
</div>

In this example, if the user is logged in, their credits will be displayed. If the user is not logged in, 'Not logged in' will be displayed instead. Please note that this is a simplified example and you might need to adjust it to fit your needs. For example, you might want to style the new element to match the rest of your navbar, or you might want to add additional checks to handle cases where the user's credit data is not available. You can find more information about the useAuth hook in the Wasp documentation (https://wasp-lang.dev/docs/auth/overview#on-the-client). For a practical example of how the navbar can be customized, you can check out this example app (https://github.com/wasp-lang/wasp/tree/main/examples/thoughts) provided by the Wasp community. In this app, the Layout.jsx file uses a TopNavbar component to display the username of the logged-in user. You can use this as a reference to understand how to customize the navbar in your own app. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ---------------------- Sorry @2euxs, I seem to be having a bit of trouble. Don't worry though, I've pinged my support and they will try to fix me up! :technologist: Perhaps try again in 15mins?

2euxsOP•3mo ago

How can I make a user loose credit after execution of a function ? @kapa.ai

kapa.ai•3mo ago

Let me check the knowledge base for you. One moment! :books: ---------------------- To make a user lose credit after the execution of a function, you would need to update the user's credit balance in your database. This can be done using the update function provided by Wasp's Prisma client. Here is a simplified example of how you can do this:

const userId = // The ID of the user
const creditToDeduct = // The amount of credit to deduct

await context.entities.User.update({
  where: {
    id: userId,
  },
  data: {
    credits: {
      decrement: creditToDeduct,
    },
  },
})

const userId = // The ID of the user
const creditToDeduct = // The amount of credit to deduct

await context.entities.User.update({
  where: {
    id: userId,
  },
  data: {
    credits: {
      decrement: creditToDeduct,
    },
  },
})

In this example, context.entities.User.update is a function provided by Wasp's Prisma client that allows you to update a user in your database. The where option is used to specify which user to update, and the data option is used to specify how to update the user. The decrement operator is used to decrease the user's credit balance. The amount to decrease is specified by creditToDeduct. Please note that this is a simplified example and you might need to adjust it to fit your needs. For example, you might want to add additional checks to handle cases where the user does not have enough credits. You can find more information about updating data with Prisma in the Prisma documentation (https://www.prisma.io/docs/concepts/components/prisma-client/crud#update). For a practical example of how to update a user's data, you can check out this Discord support thread (https://discord.com/channels/686873244791210014/1205328655300038766). In this thread, a community member shares how they updated a user's credit balance in their Wasp app. You can use this as a reference to understand how to update a user's credit balance in your own app. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ---------------------- Sorry @2euxs, I seem to be having a bit of trouble. Don't worry though, I've pinged my support and they will try to fix me up! :technologist: Perhaps try again in 15mins?

2euxsOP•3mo ago

@kapa.ai Im getting this error : [ Wasp ] ext-src/file-upload/FileUploadPage.tsx(270,13): error TS2304: Cannot find name 'context'.

kapa.ai•3mo ago

Let me check the knowledge base for you. One moment! :books: ---------------------- The error message you're seeing, Cannot find name 'context', typically means that you're trying to use a variable named context that hasn't been defined in the scope where you're trying to use it. In Wasp, context is often used in actions and queries on the server-side to access the database and other server-side features. If you're trying to use context on the client-side, like in a React component, you'll get an error because context is not defined on the client-side. If you're trying to perform a database operation from a React component, you should define a Wasp action or query and call that from your component. Here's a basic example:

// In your Wasp code
action updateUser {
  fn: <<../ext-src/updateUser.js>>
  entities: [User]
}

// In updateUser.js
module.exports = async ({ args, context }) => {
  const { userId, credits } = args

  await context.entities.User.update({
    where: { id: userId },
    data: { credits: credits },
  })
}

// In your React component
import { useMutation } from '@apollo/client'
import { UPDATE_USER } from '@wasp/queries/updateUser'

const YourComponent = () => {
  const [updateUser] = useMutation(UPDATE_USER)

  const handleClick = () => {
    updateUser({ variables: { userId: 1, credits: 10 } })
  }

  // Rest of your component
}

// In your Wasp code
action updateUser {
  fn: <<../ext-src/updateUser.js>>
  entities: [User]
}

// In updateUser.js
module.exports = async ({ args, context }) => {
  const { userId, credits } = args

  await context.entities.User.update({
    where: { id: userId },
    data: { credits: credits },
  })
}

// In your React component
import { useMutation } from '@apollo/client'
import { UPDATE_USER } from '@wasp/queries/updateUser'

const YourComponent = () => {
  const [updateUser] = useMutation(UPDATE_USER)

  const handleClick = () => {
    updateUser({ variables: { userId: 1, credits: 10 } })
  }

  // Rest of your component
}

In this example, updateUser is a Wasp action that updates a user's credits. This action is then called from a React component using Apollo Client's useMutation hook. If you're trying to access a different kind of context, like React's context, you'll need to make sure that you've set up your context provider and used the useContext hook correctly. If you're still having trouble, could you provide more details about where and how you're trying to use context? That would help me give you a more accurate answer. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ---------------------- Sorry @2euxs, I seem to be having a bit of trouble. Don't worry though, I've pinged my support and they will try to fix me up! :technologist: Perhaps try again in 15mins?

2euxsOP•3mo ago

@kapa.ai Make me a const that allows me to decrement the credits from user

kapa.ai•3mo ago

Let me check the knowledge base for you. One moment! :books: ---------------------- Sure, here's an example of how you can create a function to decrement a user's credits:

const decrementUserCredits = async (userId, creditToDeduct, context) => {
  await context.entities.User.update({
    where: {
      id: userId,
    },
    data: {
      credits: {
        decrement: creditToDeduct,
      },
    },
  })
}

const decrementUserCredits = async (userId, creditToDeduct, context) => {
  await context.entities.User.update({
    where: {
      id: userId,
    },
    data: {
      credits: {
        decrement: creditToDeduct,
      },
    },
  })
}

In this function, userId is the ID of the user whose credits you want to decrement, creditToDeduct is the amount of credits you want to decrement, and context is the context object that Wasp provides in actions and queries. You can use this function in a Wasp action or query like this:

module.exports = async ({ args, context }) => {
  const { userId, creditToDeduct } = args

  await decrementUserCredits(userId, creditToDeduct, context)
}

module.exports = async ({ args, context }) => {
  const { userId, creditToDeduct } = args

  await decrementUserCredits(userId, creditToDeduct, context)
}

Please note that this function will directly update the user's credits in the database. If you want to perform additional checks or operations, you should add them to this function. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ---------------------- Sorry @2euxs, I seem to be having a bit of trouble. Don't worry though, I've pinged my support and they will try to fix me up! :technologist: Perhaps try again in 15mins?

2euxsOP•3mo ago

@kapa.ai [ Wasp ] ext-src/file-upload/FileUploadPage.tsx(2,67): error TS2305: Module '"wasp/client/operations"' has no exported member 'decrementUserCredits'. [ Wasp ] ext-src/file-upload/operations.ts(8,8): error TS2305: Module '"wasp/server/operations"' has no exported member 'decrementUserCredits'. [ Wasp ] ext-src/file-upload/operations.ts(8,8): error TS2395: Individual declarations in merged declaration 'decrementUserCredits' must be all exported or all local. [ Wasp ] ext-src/file-upload/operations.ts(88,14): error TS2395: Individual declarations in merged declaration 'decrementUserCredits' must be all exported or all local.

kapa.ai•3mo ago

Let me check the knowledge base for you. One moment! :books: ---------------------- The error messages you're seeing suggest that you're trying to import a decrementUserCredits function from a module where it's not exported. Here's what you can do to fix these errors: 1. Make sure that the decrementUserCredits function is defined and exported in the correct file. If you've defined this function in a server-side file (like ext-src/file-upload/operations.ts), you should export it like this:

export const decrementUserCredits = async (userId, creditToDeduct, context) => {
  // Your function implementation
}

export const decrementUserCredits = async (userId, creditToDeduct, context) => {
  // Your function implementation
}

2. Make sure that you're importing the decrementUserCredits function from the correct file. If you've defined this function in a server-side file, you should import it in your server-side code like this:

import { decrementUserCredits } from './operations'

import { decrementUserCredits } from './operations'

3. Make sure that you're not trying to import the decrementUserCredits function on the client-side. Wasp separates client-side and server-side code, so you can't import server-side functions in your client-side code. If you need to call a server-side function from the client-side, you should define a Wasp action or query and call that from your client-side code. If you're still having trouble, could you provide more details about where and how you're defining and using the decrementUserCredits function? That would help me give you a more accurate answer. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ---------------------- Sorry @2euxs, I seem to be having a bit of trouble. Don't worry though, I've pinged my support and they will try to fix me up! :technologist: Perhaps try again in 15mins?

2euxsOP•3mo ago

Is it ok to let the decrement credits on the client side ? @kapa.ai

kapa.ai•3mo ago

Let me check the knowledge base for you. One moment! :books: ---------------------- It's generally not recommended to perform critical business logic, like decrementing credits, on the client-side. The main reason is security: client-side code can be easily manipulated by users, which could lead to fraudulent behavior. For example, a user could potentially manipulate the code to give themselves more credits. Instead, such operations should be performed on the server-side, where they can be properly secured and validated. In Wasp, you can define server-side logic in actions and queries, which can then be called from the client-side. Here's a basic example:

// In your Wasp code
action decrementUserCredits {
  fn: <<../ext-src/decrementUserCredits.js>>
  entities: [User]
}

// In decrementUserCredits.js
module.exports = async ({ args, context }) => {
  const { userId, creditToDeduct } = args

  await context.entities.User.update({
    where: { id: userId },
    data: { credits: { decrement: creditToDeduct } },
  })
}

// In your React component
import { useMutation } from '@apollo/client'
import { DECREMENT_USER_CREDITS } from '@wasp/queries/decrementUserCredits'

const YourComponent = () => {
  const [decrementUserCredits] = useMutation(DECREMENT_USER_CREDITS)

  const handleClick = () => {
    decrementUserCredits({ variables: { userId: 1, creditToDeduct: 10 } })
  }

  // Rest of your component
}

// In your Wasp code
action decrementUserCredits {
  fn: <<../ext-src/decrementUserCredits.js>>
  entities: [User]
}

// In decrementUserCredits.js
module.exports = async ({ args, context }) => {
  const { userId, creditToDeduct } = args

  await context.entities.User.update({
    where: { id: userId },
    data: { credits: { decrement: creditToDeduct } },
  })
}

// In your React component
import { useMutation } from '@apollo/client'
import { DECREMENT_USER_CREDITS } from '@wasp/queries/decrementUserCredits'

const YourComponent = () => {
  const [decrementUserCredits] = useMutation(DECREMENT_USER_CREDITS)

  const handleClick = () => {
    decrementUserCredits({ variables: { userId: 1, creditToDeduct: 10 } })
  }

  // Rest of your component
}

In this example, decrementUserCredits is a Wasp action that decrements a user's credits. This action is then called from a React component using Apollo Client's useMutation hook. You can find more information about actions and queries in the Wasp documentation (https://wasp-lang.dev/docs/language/basic-elements#actions-and-queries). ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ---------------------- Sorry @2euxs, I seem to be having a bit of trouble. Don't worry though, I've pinged my support and they will try to fix me up! :technologist: Perhaps try again in 15mins?

2euxsOP•3mo ago

Here is the thing : im using open saas template. Im trying to lower the cerdits by one each time someone uploads a file to the s3 with the file-upload template. How should I do it @kapa.ai

kapa.ai•3mo ago

Let me check the knowledge base for you. One moment! :books: ---------------------- To decrease the user's credits each time they upload a file, you can modify the server-side action that handles file uploads to also decrement the user's credits. Here's a basic example of how you can do this: 1. First, define a server-side action that decrements a user's credits:

// In your Wasp code
action decrementUserCredits {
  fn: <<../ext-src/decrementUserCredits.js>>
  entities: [User]
}

// In decrementUserCredits.js
module.exports = async ({ args, context }) => {
  const { userId } = args

  await context.entities.User.update({
    where: { id: userId },
    data: { credits: { decrement: 1 } },
  })
}

// In your Wasp code
action decrementUserCredits {
  fn: <<../ext-src/decrementUserCredits.js>>
  entities: [User]
}

// In decrementUserCredits.js
module.exports = async ({ args, context }) => {
  const { userId } = args

  await context.entities.User.update({
    where: { id: userId },
    data: { credits: { decrement: 1 } },
  })
}

In this example, decrementUserCredits is a Wasp action that decrements a user's credits by 1. The userId is passed as an argument to this action. 2. Next, modify the server-side action that handles file uploads to call the decrementUserCredits action after a file is successfully uploaded. You can do this using the context.executeOperation function:

// In your file upload action
module.exports = async ({ args, context }) => {
  const { userId, file } = args

  // Your file upload logic here

  // After the file is successfully uploaded, decrement the user's credits
  await context.executeOperation(decrementUserCredits, { userId })
}

// In your file upload action
module.exports = async ({ args, context }) => {
  const { userId, file } = args

  // Your file upload logic here

  // After the file is successfully uploaded, decrement the user's credits
  await context.executeOperation(decrementUserCredits, { userId })
}

In this example, context.executeOperation is a function provided by Wasp that allows you to call another action or query. The decrementUserCredits action is called with the userId as an argument. Please note that this is a simplified example and you might need to adjust it to fit your needs. For example, you might want to add additional checks to handle cases where the user does not have enough credits, or you might want to handle errors that could occur during the file upload or the credit decrement operation. You can find more information about actions and queries in the Wasp documentation (https://wasp-lang.dev/docs/language/basic-elements#actions-and-queries). ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ---------------------- Sorry @2euxs, I seem to be having a bit of trouble. Don't worry though, I've pinged my support and they will try to fix me up! :technologist: Perhaps try again in 15mins?

2euxsOP•3mo ago

How can I add a server-side const @kapa.ai

kapa.ai•3mo ago

Let me check the knowledge base for you. One moment! :books: ---------------------- To add a server-side constant in Wasp, you can define it in a JavaScript or TypeScript file in the ext-src directory. Here's an example:

// ext-src/constants.js
export const MY_CONSTANT = 'some value'

// ext-src/constants.js
export const MY_CONSTANT = 'some value'

In this example, MY_CONSTANT is a constant that is exported from the constants.js file. You can then import and use this constant in your server-side code like this:

// ext-src/someAction.js
import { MY_CONSTANT } from './constants'

module.exports = async ({ args, context }) => {
  console.log(MY_CONSTANT)
  // Rest of your action
}

// ext-src/someAction.js
import { MY_CONSTANT } from './constants'

module.exports = async ({ args, context }) => {
  console.log(MY_CONSTANT)
  // Rest of your action
}

In this example, MY_CONSTANT is imported from the constants.js file and then used in the someAction.js file. Please note that this constant will only be available on the server-side. If you want to use it on the client-side, you should define it in a client-side file instead. You can find more information about Wasp's project structure in the Wasp documentation (https://wasp-lang.dev/docs/project-structure). ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ---------------------- Sorry @2euxs, I seem to be having a bit of trouble. Don't worry though, I've pinged my support and they will try to fix me up! :technologist: Perhaps try again in 15mins?

2euxsOP•3mo ago

How can I add a server-side const with wasp open saas template @kapa.ai

kapa.ai•3mo ago

Let me check the knowledge base for you. One moment! :books: ---------------------- To add a server-side constant in Wasp with the Open SaaS template, you can define it in a JavaScript or TypeScript file in the ext-src directory. Here's an example:

// ext-src/constants.js
export const MY_CONSTANT = 'some value'

// ext-src/constants.js
export const MY_CONSTANT = 'some value'

In this example, MY_CONSTANT is a constant that is exported from the constants.js file. You can then import and use this constant in your server-side code like this:

// ext-src/someAction.js
import { MY_CONSTANT } from './constants'

module.exports = async ({ args, context }) => {
  console.log(MY_CONSTANT)
  // Rest of your action
}

// ext-src/someAction.js
import { MY_CONSTANT } from './constants'

module.exports = async ({ args, context }) => {
  console.log(MY_CONSTANT)
  // Rest of your action
}

2euxsOP•3mo ago

How to add action to main.wasp file @kapa.ai

kapa.ai•3mo ago

Let me check the knowledge base for you. One moment! :books: ---------------------- To add an action to your main.wasp file, you can use the action keyword followed by the name of the action and the path to the JavaScript file that implements the action. Here's an example:

action myAction {
  fn: ./ext-src/myAction.js
}

action myAction {
  fn: ./ext-src/myAction.js
}

In this example, myAction is the name of the action, and ./ext-src/myAction.js is the path to the JavaScript file that implements the action. The JavaScript file should export a single async function that takes an object with args and context properties and returns a Promise. Here's an example:

// ext-src/myAction.js
module.exports = async ({ args, context }) => {
  // Your action implementation here
}

// ext-src/myAction.js
module.exports = async ({ args, context }) => {
  // Your action implementation here
}

In this example, args is an object that contains the arguments passed to the action, and context is an object that provides access to various Wasp features like the database and authentication. You can find more information about actions in the Wasp documentation (https://wasp-lang.dev/docs/language/basic-elements#actions-and-queries). ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ---------------------- Sorry @2euxs, I seem to be having a bit of trouble. Don't worry though, I've pinged my support and they will try to fix me up! :technologist: Perhaps try again in 15mins?

2euxsOP•3mo ago

credits are number or string ? @kapa.ai

kapa.ai•3mo ago

Let me check the knowledge base for you. One moment! :books: ---------------------- The data type of credits would typically be a number if it's used to represent a countable quantity, such as user credits. However, the actual data type can vary depending on how you've defined it in your database schema. In Wasp, you define your data models in Prisma schema language. If you've defined credits as an integer in your User model, it would look something like this:

model User {
  id      Int     @id @default(autoincrement())
  // Other fields...
  credits Int
}

model User {
  id      Int     @id @default(autoincrement())
  // Other fields...
  credits Int
}

In this case, credits is a number (integer). If you've defined it differently in your schema, the type might be different. Please check your Prisma schema file (usually schema.prisma) to see how you've defined the credits field. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ---------------------- Sorry @2euxs, I seem to be having a bit of trouble. Don't worry though, I've pinged my support and they will try to fix me up! :technologist: Perhaps try again in 15mins?

2euxsOP•3mo ago

When my app is deployed how can I access wasp db studio ? @kapa.ai

kapa.ai•3mo ago

Let me check the knowledge base for you. One moment! :books: ---------------------- To interact with your production database using Prisma Studio after deploying your Wasp app, you can follow these steps: 1. Open a tunnel to your production database. If you're using Fly, you can do this with the command fly proxy 5432 -a <db-name>. Replace <db-name> with the name of your database. This command should be run in your terminal. 2. Set the DATABASE_URL environment variable to your production database URL. You can do this in the .env.server file in the root directory of your Wasp project. If the file doesn't exist, create it. Be careful not to accidentally perform operations on the production database that you didn't intend to. 3. Run wasp db studio. This command opens Prisma Studio, which allows you to view and interact with your database. Remember to remove the DATABASE_URL from the .env.server file and close the tunnel when you're done to prevent accidental operations on the production database. For more detailed instructions, you can refer to this Github issue (https://github.com/wasp-lang/wasp/issues/1464) and this Discord thread (https://discord.com/channels/686873244791210014/1220423321422663820). Please note that interacting with a production database should be done with caution, as it can potentially affect your live application. Always make sure to backup your data before performing any operations on the production database. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ---------------------- Sorry @2euxs, I seem to be having a bit of trouble. Don't worry though, I've pinged my support and they will try to fix me up! :technologist: Perhaps try again in 15mins?

2euxsOP•3mo ago

Hi @kapa.ai How can I make a new page with the opensaas template ?

kapa.ai•3mo ago

Let me check the knowledge base for you. One moment! :books: ---------------------- To create a new page with the OpenSaaS template in Wasp, you can follow these steps: 1. Create a new React component for your page in the src/client directory. This component will define the content of your page. Here's a basic example:

// src/client/MyPage.js
import React from 'react'

const MyPage = () => {
  return (
    <div>
      <h1>Welcome to My Page!</h1>
      <p>This is a new page in the OpenSaaS template.</p>
    </div>
  )
}

export default MyPage

// src/client/MyPage.js
import React from 'react'

const MyPage = () => {
  return (
    <div>
      <h1>Welcome to My Page!</h1>
      <p>This is a new page in the OpenSaaS template.</p>
    </div>
  )
}

export default MyPage

In this example, MyPage is a React component that displays a heading and a paragraph. 2. Add a new route for your page in the main.wasp file. This route will determine the URL of your page. Here's an example:

route "/my-page" -> MyPage

route "/my-page" -> MyPage

In this example, /my-page is the URL of the page, and MyPage is the React component that defines the content of the page. 3. Import your new page component in the main.wasp file:

import MyPage from "./src/client/MyPage.js"

import MyPage from "./src/client/MyPage.js"

Now, if you navigate to <http://localhost:3000/my-page> in your browser, you should see your new page. You can find more information about pages and routes in the Wasp documentation (https://wasp-lang.dev/docs/language/basic-elements#pages-and-routes). ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ---------------------- Sorry @2euxs, I seem to be having a bit of trouble. Don't worry though, I've pinged my support and they will try to fix me up! :technologist: Perhaps try again in 15mins?

2euxsOP•3mo ago

All my other pages are un the /src directory such as demo-ai-app and file-upload. How can I do the same for my new page @kapa.ai

kapa.ai•3mo ago

Let me check the knowledge base for you. One moment! :books:

MEE6•3mo ago

Wohooo @2euxs, you just became a Waspeteer level 5!

kapa.ai•3mo ago

---------------------- To create a new page in the src directory, you can follow these steps: 1. Create a new React component for your page in the src directory. This component will define the content of your page. Here's a basic example:

// src/MyPage.js
import React from 'react'

const MyPage = () => {
  return (
    <div>
      <h1>Welcome to My Page!</h1>
      <p>This is a new page in the OpenSaaS template.</p>
    </div>
  )
}

export default MyPage

// src/MyPage.js
import React from 'react'

const MyPage = () => {
  return (
    <div>
      <h1>Welcome to My Page!</h1>
      <p>This is a new page in the OpenSaaS template.</p>
    </div>
  )
}

export default MyPage

route MyPageRoute { path: "/my-page", to: MyPage }

route MyPageRoute { path: "/my-page", to: MyPage }

In this example, /my-page is the URL of the page, and MyPage is the React component that defines the content of the page. 3. Import your new page component in the main.wasp file:

page MyPage {
  component: import { MyPage } from "@src/MyPage"
}

page MyPage {
  component: import { MyPage } from "@src/MyPage"
}

Gaming

Programming

How can I display the user's credits on the navbar ?