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Asked: 2024-09-25T01:53:19+05:30

How can I configure TypeORM to disable logging through environment variables? I’m looking for a way to set this up without hardcoding the logging options in my application’s configuration. Any guidance on the best approach would be appreciated.

I’ve been diving into using TypeORM for my project, and I’m running into a bit of a snag with logging configuration. Everything was going smoothly until I realized I need to disable logging based on the environment. It’s super important for my app’s performance in production, but I don’t want to go hardcoding options directly into my configuration file.

So, here’s the deal: I want to use environment variables to toggle logging on and off. For development, I actually like having the logs there since it helps with debugging, but in production, I need things to run as smoothly as possible without all that extra output cluttering up the console and potentially harming performance.

I’ve looked into the TypeORM documentation, but it hasn’t been very clear when it comes to setting this up dynamically based on environment variables. I want to keep my configuration flexible and manage it through something like a `.env` file or similar so that I can just switch things around without diving into the code every time.

Has anyone figured out the best approach for this? I’m assuming it’s all about reading these environment variables and pointing them to the TypeORM config when I set it up. Maybe something like a boolean for logging that defaults to false in production but turns to true in development if an `NODE_ENV` variable is set to ‘development’?

Would I need to use something like dotenv to load the environment variables? Or is there a more elegant solution that allows greater flexibility? Any code snippets or configurations you could share would be super helpful. I really want to get this right without having to rework my setup every time I deploy. Your experiences and insights would be greatly appreciated!

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    2 Answers

    1. To manage the logging configuration in TypeORM based on the environment, you can leverage environment variables in combination with a library like dotenv. First, ensure that you’ve installed dotenv by running npm install dotenv. Next, create a .env file in the root of your project directory with the following content: 

      NODE_ENV=development
LOGGING=true

      In your TypeORM configuration file, you can read these environment variables to dynamically set the logging option. Here’s an example TypeORM configuration that does this: 

      import { DataSource } from 'typeorm';
import * as dotenv from 'dotenv';

dotenv.config();

const isDevelopment = process.env.NODE_ENV === 'development';

const AppDataSource = new DataSource({
    type: 'postgres', // Your database type
    host: 'localhost',
    port: 5432,
    username: 'your_username',
    password: 'your_password',
    database: 'your_database',
    synchronize: true,
    logging: isDevelopment ? true : false, // Enable logging in development only
    entities: [/* your entities here */],
    subscribers: [],
    migrations: [],
});

export default AppDataSource;

      This approach allows you to easily switch logging on and off based on the NODE_ENV variable without hardcoding values in your configuration. By doing so, you maintain a cleaner setup, improving both performance in production and debug experience in development.






    2. TypeORM Logging Configuration

      TypeORM Logging Configuration Help

      So, I totally get where you’re coming from! Setting up logging for TypeORM based on the environment can be a bit confusing. Here’s a simple way to handle it using environment variables.

      Using Environment Variables

      First, you’ll want to install the dotenv package if you haven’t already. This lets you load variables from a .env file. Run this command:

      npm install dotenv

      Setting Up Your .env File

      Create a .env file in your project root with something like:

      NODE_ENV=development
LOGGING=true

      For production, you can change NODE_ENV to production and set LOGGING to false.

      TypeORM Configuration

      Now, in your TypeORM setup, you can read these environment variables like this:

      import { DataSource } from 'typeorm';
import * as dotenv from 'dotenv';

dotenv.config();

const AppDataSource = new DataSource({
    type: "postgres",
    host: process.env.DB_HOST,
    port: Number(process.env.DB_PORT),
    username: process.env.DB_USER,
    password: process.env.DB_PASS,
    database: process.env.DB_NAME,
    synchronize: true,
    logging: process.env.NODE_ENV === 'development',
    entities: [/* your entities here */],
    subscribers: [],
    migrations: [],
});

export default AppDataSource;

      How It Works

      In this code, the logging will be true only if NODE_ENV is set to development. Otherwise, it defaults to false, which is what you want for production.

      So you get clean logs in production and helpful logs in development without any hardcoding! Just be sure to keep your .env file secure and not committed to version control.

      Final Thoughts

      Hopefully, this helps you get your logging all set up without too much hassle! Let me know if you have any other questions!