How Can I Access Underlying MySQL Queries in Go's GORM for Debugging While Avoiding Production Overhead?

Accessing Underlying MySQL Query in Go using GORM

In GORM, a popular Go ORM library, it is sometimes useful to access the underlying MySQL query for debugging or performance optimization purposes. While GORM provides a convenient Debug() method to log queries in the console, it may be undesirable to always have debugging enabled, especially in production.

To selectively access the underlying SQL query only in development environments, you can leverage the db.LogMode() method. This method takes a boolean argument to enable or disable query logging. Here's how to use it:

import (
    "github.com/jinzhu/gorm"
)

func main() {
    db, err := gorm.Open(dbType, connectionDSN)
    if err != nil {
        // Handle error
    }

    // Enable query logging only in development environment
    if isDebugMode() {
        db.LogMode(true)
    }

    // Execute queries with logging
    gorm.Find(&todos)
    gorm.Preload("User").Find(&todos)

    // Disable query logging after use
    if isDebugMode() {
        db.LogMode(false)
    }
}

func isDebugMode() bool {
    // Define your own logic to determine if the application is running in development mode
    return true // Replace with your actual logic
}

By calling db.LogMode(true) conditionally, you can enable query logging only in the desired environments. Remember to disable logging after use to avoid unnecessary overhead in production. This approach provides flexibility and control over query logging, ensuring that it is only activated when necessary.

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