2023-06-25 06:37:54 來源 : 博客園
前言
(資料圖片僅供參考)
最近想了解下Blazor,于是嘗試使用Blazor寫一個簡單的低代碼框架,于是就采用了Ant Design Blazor作為組件庫
低代碼框架在表現(xiàn)層的第一步則是動態(tài)表單,需要將設計時的結(jié)構(gòu)渲染成運行時的表單,本次主要實現(xiàn)動態(tài)表單,相關數(shù)據(jù)接口都以返回固定數(shù)據(jù)的形式實現(xiàn)
實現(xiàn)
1.項目準備
先通過命令創(chuàng)建一個Ant Design Blazor項目,并加入到空的解決方案當中:
dotnet new antdesign -o LowCode.Web -ho server
由于我們需要寫一些API接口,所以在Startup類中加入控制器相關的代碼:
public void ConfigureServices(IServiceCollection services) { services.AddRazorPages(); services.AddControllers();//添加控制器 services.AddEndpointsApiExplorer(); services.AddServerSideBlazor(); services.AddAntDesign(); services.AddScoped(sp => new HttpClient { BaseAddress = new Uri(sp.GetService().BaseUri) }); services.Configure (Configuration.GetSection("ProSettings")); } // This method gets called by the runtime. Use this method to configure the HTTP request pipeline. public void Configure(IApplicationBuilder app, IWebHostEnvironment env) { if (env.IsDevelopment()) { app.UseDeveloperExceptionPage(); } else { app.UseExceptionHandler("/Error"); // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts. app.UseHsts(); } app.UseHttpsRedirection(); app.UseStaticFiles(); app.UseRouting(); app.UseEndpoints(endpoints => { endpoints.MapBlazorHub(); endpoints.MapFallbackToPage("/_Host"); endpoints.MapControllers();//配置控制器 }); }
2.菜單接口
在項目中新增Services文件夾,添加MenuServices類并填入固定數(shù)據(jù),并在Startup類中注冊:
public class MenuService { ////// 獲取左側(cè)導航數(shù)據(jù) /// ///public virtual MenuDataItem[] GetMenuData() { return new MenuDataItem[] { new MenuDataItem { Path="/", Name="測試模塊", Key="Test", Icon="smile", Children=new MenuDataItem[] { new MenuDataItem { Path="/StdForm", Name="動態(tài)表單", Key="Form", Icon="plus-square" } } } }; } }
修改BaseicLayout.razor中@code部分,將_menuData改為從MenuService中獲?。?/p>
private MenuDataItem[] _menuData ; [Inject] public MenuService MenuService { get; set; } protected override async Task OnInitializedAsync() { await base.OnInitializedAsync(); _menuData = MenuService.GetMenuData(); }
3.表單組件接口
創(chuàng)建一個簡單的表單與組件的Model:
錄入控件Input:
public class Input { public string Name { get; set; } public string Value { get; set; } }
標準表單StandardFormModel:
public class StandardFormModel { public StandardFormModel() { ArrayInput = new List(); } public List ArrayInput { get; set; } }
表單API接口FormController:
[Route("api/[controller]/[action]")] [ApiController] public class FormController : ControllerBase { [HttpGet] public StandardFormModel GetFormStruc() { var result = new StandardFormModel(); result.ArrayInput.AddRange(new List(){ new Input() { Name="賬號" }, new Input() { Name="密碼" } }); return result; } }
4.動態(tài)表單頁面
在Pages文件夾下創(chuàng)建一個StdForm.razor和StdForm.razor.cs文件
StdForm.razor.cs(注意partial):
public partial class StdForm { public StandardFormModel StandardFormModel { get; set; } public FormStdFormModel { get; set; } [Inject] public HttpClient HttpClient { get; set; } public void Init() { var formStruc = HttpClient.GetFromJsonAsync ("api/Form/GetFormStruc").Result; StandardFormModel= formStruc; } protected override async Task OnInitializedAsync() { Init(); await base.OnInitializedAsync(); } }
StdForm.razor:
@page "/StdForm"
運行效果
總結(jié)
在Blazor項目中要訪問API接口則需要注入HttpClient類,使用HttpClient請求API接口即可,也可以直接注入Services調(diào)用。
目前僅僅是驗證了動態(tài)表單的可能性,其他的組件渲染可以根據(jù)Ant Design Blazor官方文檔定義模型結(jié)構(gòu)實現(xiàn)
參考文檔:
Blazor官方文檔
Ant Design Blazor官方文檔
Ant Design Blazor倉庫