I don't understand why the bind behavior has been modified

[huangapple]

完全搞不懂为啥 c.bind的行为一直变动

之前是 4.1.16, 一不小心升级到4.6.1

给发到线上了， 结果 bind的行为跟旧版本的有所变化， 造成很大的生产事故。

记得之前也变动过一次， 完全搞不懂 这么重要的一个方法， 一直变来变去， 不能加个新方法来解决吗》？？

[aldas]

You probably want to see https://github.com/labstack/echo/releases/tag/v4.2.0 notes about binding

• Bind query params only for HTTP GET/DELETE methods #1727
• DefaultBinder.Bind() binds path/query params to struct fields without TAG #1729

[huangapple]

This change broke a lot of our APIs developed on 4.1.17.

[huangapple]

Is there any method in the new version that can work like the previous bind?

[aldas]

You have problems with binding query params not binding with PUT/POST when using c.Bind()? or Bind() not binding to struct?

For PUT/POST you can use

if err := (&DefaultBinder{}).BindQueryParams(c, &payload); err != nil {
  return err
}
if err := c.Bind(u); err != nil {
  return err
}

https://echo.labstack.com/guide/binding/ lists all specific bind methods (query/path/header/body)

For struct tags - add struct tags to your struct definitions.