使用AngularJS ui-grid $ scope.saveRow保存行数据

I'm working on a small frontend application which will show various product shipping data in a ui-grid.

我正在开发一个小型前端应用程序,它将在ui-grid中显示各种产品运输数据。

I have the following code:

我有以下代码:

HTML:

<body ng-controller="MyCtrl">

    <p ng-repeat="row in myData">{{row.name}} works at {{row.company}}</p>

    <button type="button" class="btn btn-success" ng-click="getCurrentFocus()">Get Current focused cell</button>  <span ng-bind="currentFocused"></span>
    <br/>
    <br/>
    <div id="grid1" ui-grid="gridOptions" external-scopes="editRows" ui-grid-edit ui-grid-row-edit ui-grid-pinning ui-grid-paging ui-grid-cellnav class="grid"></div>

</body>

AngularJS:

var app = angular.module('webapps', ['ngAnimate', 'ui.grid', 'ui.grid.edit', 'ui.grid.rowEdit', 'ui.grid.pinning', 'ui.grid.paging', 'ui.grid.cellNav']);

app.controller('MyCtrl', ['$scope', '$http', '$q', '$interval', function ($scope, $http, $q, $interval) {

 //Column definitions
    $scope.columns = [
        { field: 'name', displayName: 'First Name', width: 300},
        { field: 'lastname', displayName: 'Last Name', width: 300 },
        { field: 'email', displayName: 'Email', width: 300 },
        { field: 'company', displayName: 'Company', width: '50%' }
    ];

    //Options for displaying the grid
    $scope.gridOptions = {
        data: 'myData',
        enableCellEditOnFocus: false,
        pagingPageSizes: [2, 5, 7],
        pagingPageSize: 5,
        enableSorting: true,
        enableGridMenu: true,
        columnDefs: $scope.columns,
        onRegisterApi: function (gridApi) {
            $scope.gridApi = gridApi;
            //var cellTemplate = '<button class="btn primary" ng-click="getExternalScopes().showMe(rowCol.row.entity)">Edit</button>'; //'ui-grid/selectionRowHeader';   // you could use your own template here
            //$scope.gridApi.core.addRowHeaderColumn({ name: 'rowHeaderCol', displayName: '', width: 50, pinnedLeft: true, cellTemplate: cellTemplate });
            gridApi.rowEdit.on.saveRow($scope, $scope.saveRow);
        }
    };

    // Save row data on edit 1 - TESTING
    $scope.saveRow = function (rowEntity) {
        // create a fake promise - normally you'd use the promise returned by $http or $resource
        var promise = $http.post("Webapps/Home/SaveRow");
        $scope.gridApi.rowEdit.setSavePromise($scope.gridApi.grid, rowEntity, promise.promise);
        console.log(rowEntity);

        // fake a delay of 3 seconds whilst the save occurs, return error if gender is "male"
        $interval(function () {
            if (rowEntity.lastname === ' ') {
                promise.reject();
            } else {
                promise.resolve();
            }
        }, 3000, 1);
    };
}]); // End of MyCtrl

My question is in regards to the $scope.saveRow method. I've looked over the documentation here and tried searching on google (not much out there for ui-grid) but I'm still hitting a dead end as I'm a bit inexperienced with this and I'm not sure how to code this properly with promises.

我的问题是关于$ scope.saveRow方法。我已经查看了这里的文档并尝试在谷歌上搜索(对于ui-grid来说并不多)但是我仍然处于死路,因为我对此有点缺乏经验并且我不确定如何编码这恰好与承诺。

There will be an MVC app running behind this which will handle pushing the data to the front end and saving table edits to a SQLServer db. Obviously what I'd like to do is have this $scope.saveRow function properly send the rowEnttiy data back to my MVC app but, again, I'm at a loss for how to code the function. The "fake" promises included in the example aren't enough for me to get a grasp on what I need to do, apparently. I initially tried the following:

将在此后面运行一个MVC应用程序,它将处理将数据推送到前端并将表编辑保存到SQLServer数据库。显然我想要做的是让这个$ scope.saveRow函数正确地将rowEnttiy数据发送回我的MVC应用程序,但是,再次,我对如何编写函数感到茫然。显然,包含在示例中的“虚假”承诺不足以让我掌握我需要做的事情。我最初尝试了以下内容:

$scope.saveRow = function (rowEntity) {
    try {
        // Need actual URL for post...controller has to accept 'row'
        $http.post("Webapps/Home/SaveRow", { row: rowEntity }).success(function (data, status, headers, config) {
            console.log("post success");
            console.log(rowEntity);
        }).error(function (data, status, headers, config) {
            console.log("post failure");
            console.log(rowEntity);
        });
    } catch (e) {
        alert("Something went wrong");
    }
};

but this only throws an exception in my console that a promise was not returned when the saveRow event is raised.

但这只会在我的控制台中抛出一个异常,即在引发saveRow事件时未返回promise。

3 个解决方案

#1

You would normally do the promise/api call in a separate repository, but basically the code you are looking for is something like this:

您通常会在单独的存储库中执行promise / api调用,但基本上您要查找的代码是这样的:

 $scope.saveRow = function( rowEntity ) {

    var promise = $scope.someRepositoryFunction(rowEntity);
    $scope.gridApi.rowEdit.setSavePromise($scope.gridApi.grid, rowEntity, promise);

    // fake a delay of 3 seconds whilst the save occurs, return error if gender is "male"
    //$interval( function() {
    //    if (rowEntity.firstName === 'male' ){
    //        promise.reject();
    //    } else {
    //        promise.resolve();
    //    }
    //}, 3000, 1);
};

$scope.someRepositoryFunction = function(row) {
    return $http.put('/Home/UpdateRow',row);
}

#2

I'm not allowed to comment so I have to submit an answer. The answer above is incorrect in that the $scope.gridApi.grid parameter to teh setSavePromise function is NOT required. Although the function does require a grid parameter, it is added by the wrapper during the .apply call.

我不允许发表评论所以我必须提交答案。上面的答案是不正确的,因为不需要$ scope.gridApi.grid参数来设置setSavePromise函数。尽管该函数确实需要网格参数,但在.apply调用期间它由包装器添加。

#3

I had actually used the code submitted by punkologist and it was indeed working but there seemed to be errors in the console on resolving promise after including $interval.

我实际上已经使用了朋克学家提交的代码并且确实有效,但是在包括$ interval之后,控制台上的解决方案似乎存在错误。

I guess the following is the appropriate code to make it run error free. Hope it works.

我想以下是适当的代码,使其无错运行。希望它有效。

$scope.saveRow = function( rowEntity ) {

var promise = $q.defer();
$http.put('/Home/UpdateRow',row).success(function(){
$interval(function(){
     promise.resolved();
     },3000, 1)
}).error(promise.reject);

$scope.gridApi.rowEdit.setSavePromise($scope.gridApi.grid, rowEntity, promise);
};

#1