Gin blog summary 1

gin It's based on go http The one enclosed on the package web frame , Blog dome Exhibition www.tnan.top/blog/

template function

stay gin Chinese can also be like jinja2 equally , Custom template function , It is mainly used to encapsulate templates Operations on template variables , For example, add two template variables , Template variable string cutting and other operations

app := gin.Default()

	// Add a custom template function 
	app.SetFuncMap(template.FuncMap{
    "stringadd": uitls.StringAdd,
		"timecut":    uitls.TimeCut,
		"safe":       uitls.Safe,
		"truestring": uitls.TrueString,
		"urladd":     uitls.UrlAdd,
	})

stay gin If HTML The data when rendering is HTML Label data , Then it treats the data as a string , Will be used in these data " " Rendering , And that's where it comes in template Medium template.HTML There's a transformation , because gin There is no such thing as jinja2 Template engine safe function , therefore , You can customize a safe template function

Customize 404 Processing function

stay web In development ,404 Is a common problem , When there is a 404 when ,gin Default will return 404 page not found
This return page is not very nice , We can use NoRoute

	app := gin.Default()

	// Customize 404 Processing function 
	app.NoRoute(controllers.NoResponse)

Custom processing returns 404 function

register HTML and css Static file path, etc

// register html Catalog 
	app := gin.Default()
	app.LoadHTMLGlob("templates/*")  //  I'll find it from the current path templates  Folder 
	// Register static resource directory 
	app.Static("static", "./static")

In the processing function return Time meeting from LoadHTMLGlob Find... Under the registered path html file , Such as

here ,details.html Will go to the registration path to find

Static files static app.Static("static", "./static") first static Yes, when static The initial request is treated as Request to get static file , first static You can view it as Path request api , the second ./static Is where to get the static file when it is requested ,./static Is under the current path static Catalog