feat(region):增加获取全部级别行政区划的功能。

controller/region.go

@@ -20,6 +20,7 @@ func InitializeRegionController(router *gin.Engine) {
 	}
 
 	RegionController.Router.GET("/region/:rid", RegionController.FetchRegions)
+	RegionController.Router.GET("/regions/:rid", RegionController.FetchAllLeveledRegions)
 }
 
 func (_RegionController) FetchRegions(c *gin.Context) {
@@ -36,3 +37,18 @@ func (_RegionController) FetchRegions(c *gin.Context) {
 	}
 	result.Json(http.StatusOK, "已经获取到相关的行政区划。", gin.H{"regions": regions})
 }
+
+func (_RegionController) FetchAllLeveledRegions(c *gin.Context) {
+	result := response.NewResult(c)
+	requestRegionCode := c.Param("rid")
+	regions, err := service.RegionService.FetchAllParentRegions(requestRegionCode)
+	if err != nil {
+		result.Error(http.StatusInternalServerError, err.Error())
+		return
+	}
+	if len(regions) == 0 {
+		result.Json(http.StatusNotFound, "未能获取到相关的行政区划。", gin.H{"regions": make([]string, 0)})
+		return
+	}
+	result.Json(http.StatusOK, "以及获取到相关的行政区划。", gin.H{"regions": regions})
+}