Passing Arguments to Gorilla Mux Handlers
In Gorilla Mux, handlers are typically registered using the HandleFunc method, which takes a function that accepts a http.ResponseWriter and a *http.Request as arguments.
Limitations of Standard Method
However, when you require additional arguments in your handlers, such as a database object, the default HandleFunc method has limitations. It only accepts two arguments, making it challenging to pass additional parameters.
Possible Solutions
There are a few workarounds to overcome this limitation:
-
Global Variables:
While it is generally discouraged in Go, it is acceptable to use global variables for database objects. This provides easy access to the database from any handler. Struct-Based Handlers:
Create a custom handler struct and define methods that take the necessary arguments. The struct can then be embedded in the handler function.Wrapper Function:
Wrap the actual handler in a wrapper function that provides the additional arguments.
The choice of approach depends on your application's requirements and preference. If you prefer not to have global database objects or require more than one instance of the database, the struct-based or wrapper function methods provide more flexibility.
The above is the detailed content of How to Pass Additional Arguments to Gorilla Mux Handlers?. For more information, please follow other related articles on the PHP Chinese website!

This article explains Go's package import mechanisms: named imports (e.g., import "fmt") and blank imports (e.g., import _ "fmt"). Named imports make package contents accessible, while blank imports only execute t

This article details efficient conversion of MySQL query results into Go struct slices. It emphasizes using database/sql's Scan method for optimal performance, avoiding manual parsing. Best practices for struct field mapping using db tags and robus

This article explains Beego's NewFlash() function for inter-page data transfer in web applications. It focuses on using NewFlash() to display temporary messages (success, error, warning) between controllers, leveraging the session mechanism. Limita

This article demonstrates creating mocks and stubs in Go for unit testing. It emphasizes using interfaces, provides examples of mock implementations, and discusses best practices like keeping mocks focused and using assertion libraries. The articl

This article explores Go's custom type constraints for generics. It details how interfaces define minimum type requirements for generic functions, improving type safety and code reusability. The article also discusses limitations and best practices

This article details efficient file writing in Go, comparing os.WriteFile (suitable for small files) with os.OpenFile and buffered writes (optimal for large files). It emphasizes robust error handling, using defer, and checking for specific errors.

The article discusses writing unit tests in Go, covering best practices, mocking techniques, and tools for efficient test management.

This article explores using tracing tools to analyze Go application execution flow. It discusses manual and automatic instrumentation techniques, comparing tools like Jaeger, Zipkin, and OpenTelemetry, and highlighting effective data visualization


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

WebStorm Mac version
Useful JavaScript development tools

SublimeText3 Linux new version
SublimeText3 Linux latest version

ZendStudio 13.5.1 Mac
Powerful PHP integrated development environment

SublimeText3 Mac version
God-level code editing software (SublimeText3)

SublimeText3 English version
Recommended: Win version, supports code prompts!
