Golang Gin Tips

First, the HTML code directly in the HTML template output

Gin document It's a little bit of a hole in my dad. If you don't use HTML templates to insert HTML code directly into your go code, you'll find a half-day solution if you're not familiar with go template.

Solution:

use template. HTML.

Example:
Index.tmpl file:

{{.data1}} {{.data2}}

Go code:

c.HTML(http.StatusOK, "index.tmpl", gin.H{        "data1": "<p> test </p>"        "data2":  template.HTML("<p> test </p>"),    })

The HTML returned is:

<p> test </p>test

Second, traverse all param of postform

I did not find all the Param APIs in the form that traverse the post submission, so I wrote this method with reference to the source code:

func updatePostPage(c *gin.Context) {    req := c.Request    req.ParseForm()    req.ParseMultipartForm(32 << 20)//参数相当于32M，官方源码中本来定义了个变量，但是是private类型不能直接调用，所以干脆直接写个值。    h := gin.H{}    for k, v := range req.PostForm {        if len(v) > 0 {            println(k, v[0])            h[k] = v[0]        }    }    c.JSON(http.StatusOK, h)}

Third, the output of beautiful JSON

1. Use c.IndentedJSON overrides c.JSON .
2. If you are using a JSON library that comes with Golang, use:

ret, err := json.MarshalIndent(h, "", "\t")

Substitution json.Marshal can get pretty json.