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Context.JSONOptions: add usage godoc example

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Gerasimos (Makis) Maropoulos 2022-03-31 20:57:05 +03:00
parent 84d1a60334
commit 4f81478ad6
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1 changed files with 20 additions and 4 deletions
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24
context/context.go
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@ -3781,8 +3781,8 @@ func (j *JSON) IsDefault() bool {
j.Prefix == DefaultJSONOptions.Prefix &&
j.ASCII == DefaultJSONOptions.ASCII &&
j.Secure == DefaultJSONOptions.Secure &&
j.Proto == DefaultJSONOptions.Proto &&
j.ErrorHandler == nil
j.Proto == DefaultJSONOptions.Proto
// except context and error handler
}
// GetContext returns the option's Context or the HTTP request's one.
@ -3958,6 +3958,20 @@ const jsonOptionsContextKey = "iris.context.json_options"
// SetJSONOptions stores the given JSON options to the handler
// for any next Context.JSON calls. Note that the Context.JSON's
// variadic options have priority over these given options.
//
// Usage Example:
//
// type jsonErrorHandler struct{}
// func (e *jsonErrorHandler) HandleContextError(ctx iris.Context, err error) {
// errors.InvalidArgument.Err(ctx, err)
// }
// ...
// errHandler := new(jsonErrorHandler)
// srv.Use(func(ctx iris.Context) {
// ctx.SetJSONOptions(iris.JSON{
// ErrorHandler: errHandler,
// })
// })
func (ctx *Context) SetJSONOptions(opts JSON) {
ctx.values.Set(jsonOptionsContextKey, opts)
}
@ -3994,8 +4008,10 @@ func (ctx *Context) writeJSON(v interface{}, opts ...JSON) (n int, err error) {
options = opts[0]
} else {
if opt, ok := ctx.getJSONOptions(); ok {
opts = []JSON{opt}
optsLength = 1
options = opt
if !options.IsDefault() { // keep the next branch valid when only the Context or/and ErrorHandler are modified.
optsLength = 1
}
}
}