when a string is empty, I don"t want to return it. If I don"t want to use if, what better way to handle it? Ask the Great God for advice
if url != "" {
g.JSON(status, gin.H{"result": result, "message": msg, "redirect_url":url})
} else {
g.JSON(status, gin.H{"result": result, "message": msg})
}
gin.H should be a map.
if you don't want to compare with if, you can customize a struct and tag the attribute, for example:
type Result struct {
Result string `json:"result"`
Message string `json:"message"`
RedirectUrl string `json:"redirect_url,omitempty"`
} omitempty tag lets the json serializer ignore null values.
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