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ABP-Book Store Application中文讲解 - Part 7: Authors: Database Integration

 1. 汇总

ABP-Book Store Application中文讲解-汇总-CSDN博客

2. 前一章 

ABP-Book Store Application中文讲解 - Part 6: Authors: Domain Layer-CSDN博客

项目之间的引用关系。

​

目录

1. 注册Author

2. DB Migration

2.1 利用Package Manager Console

2.2 利用dotnet ef

3. 创建EfCoreAuthorRepository 实现IAuthorRepository

4. 继续学习 

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1. 注册Author

在Acme.BookStore.EntityFrameworkCore中的EntityFrameworkCore文件夹下的BookStoreDbContext.cs中添加如下代码：

public DbSet<Author> Authors { get; set; }

然后在同一个文件中的OnModelCreating中添加如下代码：

       builder.Entity<Author>(b =>{b.ToTable(BookStoreConsts.DbTablePrefix + "Authors", BookStoreConsts.DbSchema);b.ConfigureByConvention();// auto configure for the base class propsb.Property(x => x.Name).IsRequired().HasMaxLength(AuthorConsts.MaxNameLength);// 创建非空字段，并设置字段最大长度b.HasIndex(x => x.Name);// 创建索引});

 BookStoreDbContext.cs完成代码：

using Acme.BookStore.Authors;
using Acme.BookStore.Books;
using Microsoft.EntityFrameworkCore;
using Volo.Abp.AuditLogging.EntityFrameworkCore;
using Volo.Abp.BackgroundJobs.EntityFrameworkCore;
using Volo.Abp.Data;
using Volo.Abp.DependencyInjection;
using Volo.Abp.EntityFrameworkCore;
using Volo.Abp.EntityFrameworkCore.Modeling;
using Volo.Abp.FeatureManagement.EntityFrameworkCore;
using Volo.Abp.Identity;
using Volo.Abp.Identity.EntityFrameworkCore;
using Volo.Abp.OpenIddict.EntityFrameworkCore;
using Volo.Abp.PermissionManagement.EntityFrameworkCore;
using Volo.Abp.SettingManagement.EntityFrameworkCore;
using Volo.Abp.TenantManagement;
using Volo.Abp.TenantManagement.EntityFrameworkCore;namespace Acme.BookStore.EntityFrameworkCore;[ReplaceDbContext(typeof(IIdentityDbContext))]
[ReplaceDbContext(typeof(ITenantManagementDbContext))]
[ConnectionStringName("Default")]
public class BookStoreDbContext :AbpDbContext<BookStoreDbContext>,IIdentityDbContext,ITenantManagementDbContext
{/* Add DbSet properties for your Aggregate Roots / Entities here. */#region Entities from the modules/* Notice: We only implemented IIdentityDbContext and ITenantManagementDbContext* and replaced them for this DbContext. This allows you to perform JOIN* queries for the entities of these modules over the repositories easily. You* typically don't need that for other modules. But, if you need, you can* implement the DbContext interface of the needed module and use ReplaceDbContext* attribute just like IIdentityDbContext and ITenantManagementDbContext.** More info: Replacing a DbContext of a module ensures that the related module* uses this DbContext on runtime. Otherwise, it will use its own DbContext class.*///Identitypublic DbSet<IdentityUser> Users { get; set; }public DbSet<IdentityRole> Roles { get; set; }public DbSet<IdentityClaimType> ClaimTypes { get; set; }public DbSet<OrganizationUnit> OrganizationUnits { get; set; }public DbSet<IdentitySecurityLog> SecurityLogs { get; set; }public DbSet<IdentityLinkUser> LinkUsers { get; set; }public DbSet<IdentityUserDelegation> UserDelegations { get; set; }public DbSet<IdentitySession> Sessions { get; set; }// Tenant Managementpublic DbSet<Tenant> Tenants { get; set; }public DbSet<TenantConnectionString> TenantConnectionStrings { get; set; }public DbSet<Book> Books { get; set; }public DbSet<Author> Authors { get; set; }#endregionpublic BookStoreDbContext(DbContextOptions<BookStoreDbContext> options): base(options){}protected override void OnModelCreating(ModelBuilder builder){base.OnModelCreating(builder);/* Include modules to your migration db context */builder.ConfigurePermissionManagement();builder.ConfigureSettingManagement();builder.ConfigureBackgroundJobs();builder.ConfigureAuditLogging();builder.ConfigureIdentity();builder.ConfigureOpenIddict();builder.ConfigureFeatureManagement();builder.ConfigureTenantManagement();/* Configure your own tables/entities inside here *///builder.Entity<YourEntity>(b =>//{//    b.ToTable(BookStoreConsts.DbTablePrefix + "YourEntities", BookStoreConsts.DbSchema);//    b.ConfigureByConvention(); //auto configure for the base class props//    //...//});builder.Entity<Book>(b =>{b.ToTable(BookStoreConsts.DbTablePrefix + "Books",BookStoreConsts.DbSchema);b.ConfigureByConvention(); //auto configure for the base class propsb.Property(x => x.Name).IsRequired().HasMaxLength(128);});builder.Entity<Author>(b =>{b.ToTable(BookStoreConsts.DbTablePrefix + "Authors", BookStoreConsts.DbSchema);b.ConfigureByConvention();// auto configure for the base class propsb.Property(x => x.Name).IsRequired().HasMaxLength(AuthorConsts.MaxNameLength);// 创建非空字段，并设置字段最大长度b.HasIndex(x => x.Name);// 创建索引});}
}

2. DB Migration

2.1 利用Package Manager Console

Tools --》 NuGet Package Manager --> Package Manager Console

如果利用VS的Add-Migration和Update-Databse，需要右击Acme.BookStore.EntityFrameworkCore设置为启动项（Set as Startup Project）。

Default project选择Acme.BookStore.EntityFrameworkCore，然后输入add-migr,敲Tab会自动补全Add-Migration 。然后输入Add_Authors,敲回车。

 Add-Migration Add_Author

 如果生成成功，可以利用一下命令更新DB

Update-Database

2.2 利用dotnet ef

如果以上命令生成失败，可以右击cme.BookStore.EntityFrameworkCore，选择Open in terminal，利用ef 生成。

dotnet ef migrations add Add_Authors

生成成功后，利用一下命令更新DB

dotnet ef database update

 

3. 创建EfCoreAuthorRepository 实现IAuthorRepository

在Acme.BookStore.EntityFrameworkCore中的EntityFrameworkCore文件夹下创建Authors目录，然后创建EfCoreAuthorRepository.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Dynamic.Core;
using System.Threading.Tasks;
using Acme.BookStore.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore;
using Volo.Abp.Domain.Repositories.EntityFrameworkCore;
using Volo.Abp.EntityFrameworkCore;namespace Acme.BookStore.Authors;public class EfCoreAuthorRepository: EfCoreRepository<BookStoreDbContext, Author, Guid>,IAuthorRepository
{public EfCoreAuthorRepository(IDbContextProvider<BookStoreDbContext> dbContextProvider): base(dbContextProvider){}public async Task<Author> FindByNameAsync(string name){var dbSet = await GetDbSetAsync();return await dbSet.FirstOrDefaultAsync(author => author.Name == name);}public async Task<List<Author>> GetListAsync(int skipCount,int maxResultCount,string sorting,string filter = null){var dbSet = await GetDbSetAsync();return await dbSet.WhereIf(!filter.IsNullOrWhiteSpace(),author => author.Name.Contains(filter)).OrderBy(sorting).Skip(skipCount).Take(maxResultCount).ToListAsync();}
}

4. 继续学习