Rumah >pembangunan bahagian belakang >Tutorial C#.Net >ABP入门系列(6)——展现层实现增删改查
这一章节将通过完善Controller、View、ViewModel,来实现展现层的增删改查。最终实现效果如下图:
一、定义Controller
ABP对ASP.NET MVC Controllers进行了集成,通过引入Abp.Web.Mvc命名空间,创建Controller继承自AbpController, 我们即可使用ABP附加给我们的以下强大功能:
本地化
异常处理
对返回的JsonResult进行包装
审计日志
权限认证([AbpMvcAuthorize]特性)
工作单元(默认未开启,通过添加[UnitOfWork]开启)
1,创建TasksController继承自AbpController
通过构造函数注入对应用服务的依赖。
[AbpMvcAuthorize] public class TasksController : AbpController { private readonly ITaskAppService _taskAppService; private readonly IUserAppService _userAppService; public TasksController(ITaskAppService taskAppService, IUserAppService userAppService) { _taskAppService = taskAppService; _userAppService = userAppService; } }
二、创建列表展示分部视图(_List.cshtml)
在分部视图中,我们通过循环遍历,输出任务清单。
@model IEnumerable<LearningMpaAbp.Tasks.Dtos.TaskDto> <div> <ul class="list-group"> @foreach (var task in Model) { <li class="list-group-item"> <div class="btn-group pull-right"> <button type="button" class="btn btn-info" onclick="editTask(@task.Id);">Edit</button> <button type="button" class="btn btn-success" onclick="deleteTask(@task.Id);">Delete</button> </div> <div class="media"> <a class="media-left" href="#"> <i class="fa @task.GetTaskLable() fa-3x"></i> </a> <div class="media-body"> <h4 class="media-heading">@task.Title</h4> <p class="text-info">@task.AssignedPersonName</p> <span class="text-muted">@task.CreationTime.ToString("yyyy-MM-dd HH:mm:ss")</span> </div> </div> </li> } </ul> </div>
三,创建新增分部视图(_CreateTask.cshtml)
为了好的用户体验,我们采用异步加载的方式来实现任务的创建。
1,引入js文件
使用异步提交需要引入jquery.validate.unobtrusive.min.js和jquery.unobtrusive-ajax.min.js,其中jquery.unobtrusive-ajax.min.js,需要通过Nuget安装微软的Microsoft.jQuery.Unobtrusive.Ajax包获取。
然后通过捆绑一同引入到视图中。打开App_Start文件夹下的BundleConfig.cs,添加以下代码:
bundles.Add( new ScriptBundle("~/Bundles/unobtrusive/js") .Include( "~/Scripts/jquery.validate.unobtrusive.min.js", "~/Scripts/jquery.unobtrusive-ajax.min.js" ) );
找到Views/Shared/_Layout.cshtml,添加对捆绑的js引用。
@Scripts.Render("~/Bundles/vendor/js/bottom") @Scripts.Render("~/Bundles/js")//在此处添加下面一行代码 @Scripts.Render("~/Bundles/unobtrusive/js")
2,创建分部视图
其中用到了Bootstrap-Modal,Ajax.BeginForm,对此不了解的可以参考
Ajax.BeginForm()知多少
Bootstrap-Modal的用法介绍
该Partial View绑定CreateTaskInput模型。最终_CreateTask.cshtml代码如下:
@model LearningMpaAbp.Tasks.Dtos.CreateTaskInput@{ ViewBag.Title = "Create"; } <div class="modal fade" id="add" tabindex="-1" role="dialog" aria-labelledby="createTask" data-backdrop="static"> <div class="modal-dialog" role="document"> <div class="modal-content"> <div class="modal-header"> <button type="button" class="close" data-dismiss="modal"><span aria-hidden="true">×</span><span class="sr-only">Close</span></button> <h4 class="modal-title" id="myModalLabel">Create Task</h4> </div> <div class="modal-body" id="modalContent"> @using (Ajax.BeginForm("Create", "Tasks", new AjaxOptions() { UpdateTargetId = "taskList", InsertionMode = InsertionMode.Replace, OnBegin = "beginPost('#add')", OnSuccess = "hideForm('#add')", OnFailure = "errorPost(xhr, status, error,'#add')" })) { @Html.AntiForgeryToken() <div class="form-horizontal"> <h4>Task</h4> <hr /> @Html.ValidationSummary(true, "", new { @class = "text-danger" }) <div class="form-group"> @Html.LabelFor(model => model.AssignedPersonId, "AssignedPersonId", htmlAttributes: new { @class = "control-label col-md-2" }) <div class="col-md-10"> @Html.DropDownList("AssignedPersonId", null, htmlAttributes: new { @class = "form-control" }) @Html.ValidationMessageFor(model => model.AssignedPersonId, "", new { @class = "text-danger" }) </div> </div> <div class="form-group"> @Html.LabelFor(model => model.Title, htmlAttributes: new { @class = "control-label col-md-2" }) <div class="col-md-10"> @Html.EditorFor(model => model.Title, new { htmlAttributes = new { @class = "form-control" } }) @Html.ValidationMessageFor(model => model.Title, "", new { @class = "text-danger" }) </div> </div> <div class="form-group"> @Html.LabelFor(model => model.Description, htmlAttributes: new { @class = "control-label col-md-2" }) <div class="col-md-10"> @Html.EditorFor(model => model.Description, new { htmlAttributes = new { @class = "form-control" } }) @Html.ValidationMessageFor(model => model.Description, "", new { @class = "text-danger" }) </div> </div> <div class="form-group"> @Html.LabelFor(model => model.State, htmlAttributes: new { @class = "control-label col-md-2" }) <div class="col-md-10"> @Html.EnumDropDownListFor(model => model.State, htmlAttributes: new { @class = "form-control" }) @Html.ValidationMessageFor(model => model.State, "", new { @class = "text-danger" }) </div> </div> <div class="form-group"> <div class="col-md-offset-2 col-md-10"> <button type="submit" class="btn btn-default">Create</button> </div> </div> </div> } </div> </div> </div> </div>
对应Controller代码:
[ChildActionOnly]public PartialViewResult Create(){ var userList = _userAppService.GetUsers(); ViewBag.AssignedPersonId = new SelectList(userList.Items, "Id", "Name"); return PartialView("_CreateTask"); } [HttpPost] [ValidateAntiForgeryToken]public ActionResult Create(CreateTaskInput task){ var id = _taskAppService.CreateTask(task); var input = new GetTasksInput(); var output = _taskAppService.GetTasks(input); return PartialView("_List", output.Tasks); }
四、创建更新分部视图(_EditTask.cshtml)
同样,该视图也采用异步更新方式,也采用Bootstrap-Modal,Ajax.BeginForm()技术。该Partial View绑定UpdateTaskInput模型。
@model LearningMpaAbp.Tasks.Dtos.UpdateTaskInput@{ ViewBag.Title = "Edit"; } <div class="modal fade" id="editTask" tabindex="-1" role="dialog" aria-labelledby="editTask" data-backdrop="static"> <div class="modal-dialog" role="document"> <div class="modal-content"> <div class="modal-header"> <button type="button" class="close" data-dismiss="modal"><span aria-hidden="true">×</span><span class="sr-only">Close</span></button> <h4 class="modal-title" id="myModalLabel">Edit Task</h4> </div> <div class="modal-body" id="modalContent"> @using (Ajax.BeginForm("Edit", "Tasks", new AjaxOptions() { UpdateTargetId = "taskList", InsertionMode = InsertionMode.Replace, OnBegin = "beginPost('#editTask')", OnSuccess = "hideForm('#editTask')" })) { @Html.AntiForgeryToken() <div class="form-horizontal"> <h4>Task</h4> <hr /> @Html.ValidationSummary(true, "", new { @class = "text-danger" }) @Html.HiddenFor(model => model.Id) <div class="form-group"> @Html.LabelFor(model => model.AssignedPersonId, "AssignedPersonId", htmlAttributes: new { @class = "control-label col-md-2" }) <div class="col-md-10"> @Html.DropDownList("AssignedPersonId", null, htmlAttributes: new { @class = "form-control" }) @Html.ValidationMessageFor(model => model.AssignedPersonId, "", new { @class = "text-danger" }) </div> </div> <div class="form-group"> @Html.LabelFor(model => model.Title, htmlAttributes: new { @class = "control-label col-md-2" }) <div class="col-md-10"> @Html.EditorFor(model => model.Title, new { htmlAttributes = new { @class = "form-control" } }) @Html.ValidationMessageFor(model => model.Title, "", new { @class = "text-danger" }) </div> </div> <div class="form-group"> @Html.LabelFor(model => model.Description, htmlAttributes: new { @class = "control-label col-md-2" }) <div class="col-md-10"> @Html.EditorFor(model => model.Description, new { htmlAttributes = new { @class = "form-control" } }) @Html.ValidationMessageFor(model => model.Description, "", new { @class = "text-danger" }) </div> </div> <div class="form-group"> @Html.LabelFor(model => model.State, htmlAttributes: new { @class = "control-label col-md-2" }) <div class="col-md-10"> @Html.EnumDropDownListFor(model => model.State, htmlAttributes: new { @class = "form-control" }) @Html.ValidationMessageFor(model => model.State, "", new { @class = "text-danger" }) </div> </div> <div class="form-group"> <div class="col-md-offset-2 col-md-10"> <input type="submit" value="Save" class="btn btn-default" /> </div> </div> </div> } </div> </div> </div> </div> <script type="text/javascript"> //该段代码十分重要,确保异步调用后jquery能正确执行验证逻辑 $(function () { //allow validation framework to parse DOM $.validator.unobtrusive.parse('form'); }); </script>
后台代码:
public PartialViewResult Edit(int id){ var task = _taskAppService.GetTaskById(id); var updateTaskDto = AutoMapper.Mapper.Map<UpdateTaskInput>(task); var userList = _userAppService.GetUsers(); ViewBag.AssignedPersonId = new SelectList(userList.Items, "Id", "Name", updateTaskDto.AssignedPersonId); return PartialView("_EditTask", updateTaskDto); } [HttpPost] [ValidateAntiForgeryToken]public ActionResult Edit(UpdateTaskInput updateTaskDto){ _taskAppService.UpdateTask(updateTaskDto); var input = new GetTasksInput(); var output = _taskAppService.GetTasks(input); return PartialView("_List", output.Tasks); }
五,创建Index视图
在首页中,我们一般会用来展示列表,并通过弹出模态框的方式来进行新增更新删除。为了使用ASP.NET MVC强视图带给我们的好处(模型绑定、输入校验等等),我们需要创建一个ViewModel来进行模型绑定。因为Abp提倡为每个不同的应用服务提供不同的Dto进行数据交互,新增对应CreateTaskInput,更新对应UpdateTaskInput,展示对应TaskDto。那我们创建的ViewModel就需要包含这几个模型,方可在一个视图中完成多个模型的绑定。
1,创建视图模型(IndexViewModel)
namespace LearningMpaAbp.Web.Models.Tasks{ public class IndexViewModel { /// <summary> /// 用来进行绑定列表过滤状态 /// </summary> public TaskState? SelectedTaskState { get; set; } /// <summary> /// 列表展示 /// </summary> public IReadOnlyList<TaskDto> Tasks { get; } /// <summary> /// 创建任务模型 /// </summary> public CreateTaskInput CreateTaskInput { get; set; } /// <summary> /// 更新任务模型 /// </summary> public UpdateTaskInput UpdateTaskInput { get; set; } public IndexViewModel(IReadOnlyList<TaskDto> items) { Tasks = items; } /// <summary> /// 用于过滤下拉框的绑定 /// </summary> /// <returns></returns> public List<SelectListItem> GetTaskStateSelectListItems() { var list=new List<SelectListItem>() { new SelectListItem() { Text = "AllTasks", Value = "", Selected = SelectedTaskState==null } }; list.AddRange(Enum.GetValues(typeof(TaskState)) .Cast<TaskState>() .Select(state=>new SelectListItem() { Text = $"TaskState_{state}", Value = state.ToString(), Selected = state==SelectedTaskState }) ); return list; } } }
2,创建视图
Index视图,通过加载Partial View的形式,将列表、新增视图一次性加载进来。
@using Abp.Web.Mvc.Extensions @model LearningMpaAbp.Web.Models.Tasks.IndexViewModel @{ ViewBag.Title = L("TaskList"); ViewBag.ActiveMenu = "TaskList"; //Matches with the menu name in SimpleTaskAppNavigationProvider to highlight the menu item } @section scripts{ @Html.IncludeScript("~/Views/Tasks/index.js"); }<h2> @L("TaskList") <button type="button" class="btn btn-primary" data-toggle="modal" data-target="#add">Create Task</button> <a class="btn btn-primary" data-toggle="modal" href="@Url.Action("RemoteCreate")" data-target="#modal" role="button">(Create Task)使用Remote方式调用Modal进行展现</a> <!--任务清单按照状态过滤的下拉框--> <span class="pull-right"> @Html.DropDownListFor( model => model.SelectedTaskState, Model.GetTaskStateSelectListItems(), new { @class = "form-control select2", id = "TaskStateCombobox" }) </span></h2><!--任务清单展示--><div class="row" id="taskList"> @{ Html.RenderPartial("_List", Model.Tasks); }</div><!--通过初始加载页面的时候提前将创建任务模态框加载进来--> @Html.Action("Create")<!--编辑任务模态框通过ajax动态填充到此div中--><div id="edit"></div><!--Remote方式弹出创建任务模态框--> <div class="modal fade" id="modal" tabindex="-1" role="dialog" aria-labelledby="createTask" data-backdrop="static"> <div class="modal-dialog" role="document"> <div class="modal-content"> </div> </div></div>
3,Remote方式创建任务讲解
Remote方式就是,点击按钮的时候去加载创建任务的PartialView到指定的div中。而我们代码中另一种方式是通过@Html.Action("Create")的方式,在加载Index的视图的作为子视图同步加载了进来。
感兴趣的同学自行查看源码,不再讲解。
<a class="btn btn-primary" data-toggle="modal" href="@Url.Action("RemoteCreate")" data-target="#modal" role="button">(Create Task)使用Remote方式调用Modal进行展现</a> <!--Remote方式弹出创建任务模态框--> <div class="modal fade" id="modal" tabindex="-1" role="dialog" aria-labelledby="createTask" data-backdrop="static"> <div class="modal-dialog" role="document"> <div class="modal-content"> </div> </div></div>
4,后台代码
public ActionResult Index(GetTasksInput input) { var output = _taskAppService.GetTasks(input); var model = new IndexViewModel(output.Tasks) { SelectedTaskState = input.State }; return View(model); }
5,js代码(index.js)
var taskService = abp.services.app.task; (function ($) { $(function () { var $taskStateCombobox = $('#TaskStateCombobox'); $taskStateCombobox.change(function () { getTaskList(); }); var $modal = $(".modal"); //显示modal时,光标显示在第一个输入框 $modal.on('shown.bs.modal', function () { $modal.find('input:not([type=hidden]):first').focus(); }); }); })(jQuery);//异步开始提交时,显示遮罩层function beginPost(modalId) { var $modal = $(modalId); abp.ui.setBusy($modal); }//异步开始提交结束后,隐藏遮罩层并清空Formfunction hideForm(modalId) { var $modal = $(modalId); var $form = $modal.find("form"); abp.ui.clearBusy($modal); $modal.modal("hide"); //创建成功后,要清空form表单 $form[0].reset(); }//处理异步提交异常function errorPost(xhr, status, error, modalId) { if (error.length>0) { abp.notify.error('Something is going wrong, please retry again later!'); var $modal = $(modalId); abp.ui.clearBusy($modal); } }function editTask(id) { abp.ajax({ url: "/tasks/edit", data: { "id": id }, type: "GET", dataType: "html" }) .done(function (data) { $("#edit").html(data); $("#editTask").modal("show"); }) .fail(function (data) { abp.notify.error('Something is wrong!'); }); }function deleteTask(id) { abp.message.confirm( "是否删除Id为" + id + "的任务信息", function (isConfirmed) { if (isConfirmed) { taskService.deleteTask(id) .done(function () { abp.notify.info("删除任务成功!"); getTaskList(); }); } } ); }function getTaskList() { var $taskStateCombobox = $('#TaskStateCombobox'); var url = '/Tasks/GetList?state=' + $taskStateCombobox.val(); abp.ajax({ url: url, type: "GET", dataType: "html" }) .done(function (data) { $("#taskList").html(data); });
js代码中处理了Ajax回调函数,以及任务状态过滤下拉框更新事件,编辑、删除任务代码。其中getTaskList()函数是用来异步属性列表,对应调用的GetList()Action的后台代码如下:
public PartialViewResult GetList(GetTasksInput input){ var output = _taskAppService.GetTasks(input); return PartialView("_List", output.Tasks); }
六、总结
至此,完成了任务的增删改查。展现层主要用到了Asp.net mvc的强类型视图、Bootstrap-Modal、Ajax异步提交技术。
其中需要注意的是,在异步加载表单时,需要添加以下js代码,jquery方能进行前端验证。
<script type="text/javascript"> $(function () { //allow validation framework to parse DOM $.validator.unobtrusive.parse('form'); });
以上就是ABP入门系列(6)——展现层实现增删改查的内容,更多相关内容请关注PHP中文网(www.php.cn)!