AngularJs 将参数传递给服务

Question

我想通过 post 方法输入 ID 并从数据库中获取该 ID 的数据。我目前在我的控制器代码中收到错误“employeeID is not defined”。

控制器代码：

$scope.employeeID = '10';


function test() {
    var getData = myService.getEmployee(employeeID);
    getData.then(function (emp) {
        $scope.employees2 = emp.data;

    }, function () {
        alert('Error in getting records');
    });
}

test(employeeID);

服务代码：

this.getEmployee = function (employeeID) {
    var response = $http({
        method: "post",
        url: "Home/getEmployeeByNo",
        params: {
            id: JSON.stringify(employeeID)
        }
    });
    return response;
}

HomeController 代码：

    public JsonResult getEmployeeByNo(string EmpNo)
    {
        using (InsiteEntities dataContext = new InsiteEntities())
        {
            int no = Convert.ToInt32(EmpNo);
            var employeeList = dataContext.Employee.Find(no);
            return Json(employeeList, JsonRequestBehavior.AllowGet);
        }
    }

Answer 1

改变

来自

 var getData = myService.getEmployee(employeeID);

到

 var getData = myService.getEmployee($scope.employeeID);

Answer 2

您应该传递EmpNo 参数而不是params 对象中的id 参数，这样URL 将形成Home/getEmployeeByNo?EmpNo=123 的形式

this.getEmployee = function (employeeID) {
    var response = $http({
        method: "post",
        url: "Home/getEmployeeByNo",
        params: {
            EmpNo: employeeID //changed to `EmpNo`
        }
    });
    return response;
}

也从$scope 传递employeeID，如Sajeeth's answer 中所述，如myService.getEmployee($scope.employeeID);