add request package to simplify parameter parsing

request/request.go

@@ -0,0 +1,60 @@
+package request
+
+import (
+	"net/http"
+	"runtime"
+
+	"github.com/gin-gonic/gin"
+	"github.com/sirupsen/logrus"
+)
+
+type Checker interface {
+	Check() error
+}
+
+func ParseSuccess(ctx *gin.Context, r interface{}, fs ...func() error) bool {
+	if r != nil {
+		if Error(ctx, http.StatusBadRequest, ctx.ShouldBind(r)) {
+			return false
+		}
+
+		if checker, ok := r.(Checker); ok {
+			return !Error(ctx, http.StatusBadRequest, checker.Check())
+		}
+	}
+	for _, f := range fs {
+		if Error(ctx, http.StatusBadRequest, f()) {
+			return false
+		}
+	}
+	return true
+}
+
+func Error(ctx *gin.Context, status int, err error) bool {
+	if err == nil {
+		return false
+	}
+	ctx.JSON(status, gin.H{"msg": err.Error()})
+
+	if status == http.StatusInternalServerError {
+		_, file, line, _ := runtime.Caller(1)
+		logrus.WithField("err", err).Errorf("file:%s line:%d", file, line)
+	}
+	return true
+}
+
+func Success(ctx *gin.Context, data interface{}) {
+	if data == nil {
+		ctx.Status(http.StatusNoContent)
+		return
+	}
+
+	switch ctx.Request.Method {
+	case "GET", "PUT", "DELETE", "HEAD", "PATCH", "OPTIONS":
+		ctx.JSON(http.StatusOK, data)
+	case "POST":
+		ctx.JSON(http.StatusCreated, data)
+	default:
+		ctx.JSON(http.StatusBadRequest, gin.H{"msg": "unsupported request method" + ctx.Request.Method})
+	}
+}