接上篇: B08. BootstrapBlazor实战 Menu 导航菜单使用(1)
实战BootstrapBlazorMenu 导航菜单的使用, 以及整合Freesql orm快速制作菜单项数据库后台维护页面
BootstrapBlazor 是 Bootstrap 风格的 Blazor UI 组件库 基于 Bootstrap 样式库精心打造，并且额外增加了 100 多种常用的组件，为您快速开发项目带来非一般的感觉
demo演示的是Sqlite驱动,FreeSql支持多种数据库，MySql/SqlServer/PostgreSQL/Oracle/Sqlite/Firebird/达梦/神通/人大金仓/翰高/华为GaussDB/MsAccess
3.项目模板
节省时间,直接使用 Bootstrap Blazor App 模板快速搭建项目
传送门:https://www.blazor.zone/template
3.1. 安装项目模板
dotnet new -i Bootstrap.Blazor.Templates
3.2. 创建工程
dotnet new bbapp
4. 本次演示使用工程名字 b08Menu ,命令如下
dotnet new bbapp -o b08Menu
dotnet add b08Menu/BootstrapBlazorApp.Shared package FreeSql.Provider.Sqlite
dotnet add b08Menu/BootstrapBlazorApp.Shared package Densen.FreeSql.Extensions.BootstrapBlazor
dotnet sln add b08Menu/BootstrapBlazorApp.Server/BootstrapBlazorApp.Server.csproj
dotnet sln add b08Menu/BootstrapBlazorApp.Shared/BootstrapBlazorApp.Shared.csproj
dotnet sln add b08Menu/BootstrapBlazorApp.WebAssembly/BootstrapBlazorApp.WebAssembly.csproj注:由于模板使用了共享库,双出Server和WebAssembly工程,我们这里只使用Server工程做演示.
5. 数据服务
添加FreeSql服务到BootstrapBlazorApp.Server/Program.cs 在 builder.Services.AddBootstrapBlazor(); 之前加入
builder.Services.AddFreeSql(option =>
{
//demo演示的是Sqlite驱动,FreeSql支持多种数据库，MySql/SqlServer/PostgreSQL/Oracle/Sqlite/Firebird/达梦/神通/人大金仓/翰高/华为GaussDB/MsAccess
option.UseConnectionString(FreeSql.DataType.Sqlite, "Data Source=test.db;") //也可以写到配置文件中
#if DEBUG
//开发环境:自动同步实体
.UseAutoSyncStructure(true)
.UseNoneCommandParameter(true)
//调试sql语句输出
.UseMonitorCommand(cmd => System.Console.WriteLine(cmd.CommandText))
#endif
;
});传送门:https://github.com/densen2014/Blazor100/wiki/B03.-BootstrapBlazor实战-10分钟编写数据库维护项目
6. Menu数据实体类
使用FreeSql的父子导航属性处理树形分类
传送门:https://github.com/densen2014/Blazor100/wiki/B05.-BootstrapBlazor实战-Tree树形控件使用(2)
新建类文件 Data/WebPages.cs
/// <summary>
/// 页面
/// </summary>
[AutoGenerateClass(Searchable = true, Filterable = true, Sortable = true)]
public class WebPages
{
public WebPages() { }
public WebPages(string PageName, string? Url = null, string? Icon = null, string? Code = "0", List<WebPages>? Childs = null)
{
this.PageName = PageName;
this.Url = Url ?? $"/{PageName}";
this.Icon = Icon;
this.Code = Code;
this.Childs = Childs;
}
/// <summary>
///代码
/// </summary>
[DisplayName("代码")]
[Column(IsPrimary = true)]
[AutoGenerateColumn(DefaultSort = true, DefaultSortOrder = SortOrder.Asc)]
public string? Code { get; set; }
/// <summary>
///父级代码
/// </summary>
[DisplayName("父级代码")]
[Column]
public string? ParentCode { get; set; }
[Navigate(nameof(ParentCode))]
[AutoGenerateColumn(Ignore = true)]
public WebPages? Parent { get; set; }
[Navigate(nameof(ParentCode))]
[AutoGenerateColumn(Ignore = true)]
public List<WebPages>? Childs { get; set; }
/// <summary>
///页面名称
/// </summary>
[Required(ErrorMessage = "{0}不能为空")]
[DisplayName("页面名称")]
public string? PageName { get; set; }
/// <summary>
///Icon
/// </summary>
[DisplayName("Icon")]
[AutoGenerateColumn(Visible = false)]
public string? Icon { get; set; }
/// <summary>
///Url
/// </summary>
[Required(ErrorMessage = "{0}不能为空")]
[DisplayName("Url")]
[AutoGenerateColumn(Visible = false)]
public string? Url { get; set; }
/// <summary>
/// 隐藏
/// </summary>
[DisplayName ("隐藏")]
public bool Hide { get; set; }
}7. 扩展工具
写文章的时候这个方法已经pr进BootstrapBlazor库,可能读者们看到的时候已经内置次方法了.如果重复,自行跳过这步.
public static class Utility
{
/// <summary>
/// 菜单树状数据层次化方法
/// </summary>
/// <param name="items">数据集合</param>
/// <param name="parentId">父级节点</param>
public static IEnumerable<MenuItem> CascadingMenu(this IEnumerable<MenuItem> items, string? parentId = null) => items.Where(i => i.ParentId == parentId).Select(i =>
{
i.Items = CascadingMenu(items, i.Id).ToList();
return i;
});
}8. 菜单界面
找到BootstrapBlazorApp.Shared/Shared/MainLayout.razor文件,展开三角符号,打开MainLayout.razor.cs文件编辑
注入FreeSql
[Inject]
[NotNull]
IFreeSql? fsql { get; set; }Menus 初始化保存到数据库
using Microsoft.AspNetCore.Components;
using System.Diagnostics.CodeAnalysis;
using BootstrapBlazorApp.Shared.Data;
//private List<MenuItem>? Menus { get; set; }
private List<MenuItem>? Menus { get; set; } = new List<MenuItem>();
/// <summary>
/// OnInitialized 方法
/// </summary>
protected override void OnInitialized()
{
base.OnInitialized();
//Menus = GetIconSideMenuItems();
}
protected override void OnAfterRender(bool firstRender)
{
if (firstRender)
{
if (fsql.Select<WebPages>().Count() == 0)
{
var pages = new List<WebPages>(){
new WebPages("首页","/","fa fa-home","001") ,
new WebPages("数据","","fa fa-fw fa-database","002",
new List<WebPages>(new[] {
new WebPages("FetchData","fetchdata","fa fa-fw fa-database","002_001") ,
new WebPages( "Counter","counter","fa fa-fw fa-check-square-o","002_002") ,
new WebPages("后台管理","admins","fa fa-gears","002_003") ,
})) ,
new WebPages("Table","table","fa fa-fw fa-table","004") ,
new WebPages("花名册","users","fa fa-fw fa-users","005")
};
var repo = fsql.GetRepository<WebPages>();//仓库类
repo.DbContextOptions.EnableAddOrUpdateNavigateList = true; //开启一对多，多对多级联保存功能
repo.Insert(pages);
}
Menus = fsql.Select<WebPages>().OrderBy(a => a.Code)
.LeftJoin(d => d.ParentCode == d.Parent!.Code)
.ToList(a => new MenuItem()
{
Text = a.PageName,
Id = a.Code,
Url = a.Url,
ParentId = a.ParentCode,
Icon = a.Icon
}).CascadingMenu().ToList();
// 算法获取属性结构数据 .CascadingMenu().ToList()
StateHasChanged();
}
}到这一步,大家肯定迫不及待要运行一下了,来吧,少年,F5
9. 菜单管理界面
使用Densen.FreeSql.Extensions.BootstrapBlazor库的数据库服务直接表格编辑菜单数据库表格.
先注销模板工程自带演示服务,BootstrapBlazorApp.Server/Program.cs 注销builder.Services.AddTableDemoDataService();
// 增加 Table 数据服务操作类
//builder.Services.AddTableDemoDataService();新建BootstrapBlazorApp.Shared/Pages/Admins.razor文件
@page "/admins"
@attribute [TabItemOption(Text = "菜单管理")]
<PageTitle>菜单管理</PageTitle>
<div class="table-users scroll">
<Table TItem="WebPages"
IsFixedHeader="true"
IsPagination="true"
IsStriped="true"
AutoGenerateColumns="true"
ShowSearch="true"
ShowToolbar="true"
ShowExtendButtons="true"
DoubleClickToEdit=true
ShowColumnList=true
ShowCardView=true>
</Table>
</div>来吧,少年,F5
是不是很有成就感,你怎么这么优秀呢? 哈哈哈.
10.添加菜单
刷新页面
少年, 如期而来!
