Extending Abp entities by adding navigation properties #295

4 Answer(s)

• 

  0

  liangshiwei created 6 years ago

  Fullstack Developer

  Hi,

  There is an example to help you : https://github.com/abpframework/abp-samples/tree/master/DocumentationSamples/CustomApplicationModules.

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  alkaabi created 6 years ago

  I dont think this answers my questions unless I don't understand what is going on.

  I will show you what I have done and you can direct me If I am on the right track.

  I have created a UnitCategory class

  

  I have added the extra properties to OrganizationUnit as documented in the docs.abp.io

  and added the mappings

  and Defined the navigation properties

  

  and that is what I get in migration

  

  When I run the migrator project, this is what I get:

  

  It breaks in SeedAsync method.

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  liangshiwei created 6 years ago

  Fullstack Developer

  See https://github.com/abpframework/abp/issues/1414#issuecomment-508818941.

  If you still want add navigation properties, please do this:

  Entity:

  public class UnitCategory : Entity<Guid>
  {
      public UnitCategory(Guid id)
      {
          Id = id;
      }
  
      public List<OrganizationUnit> OrganizationUnits { get; set; }
  }
  

  DbContext:

  protected override void OnModelCreating(ModelBuilder builder)
  {
      base.OnModelCreating(builder);
  
      /* Configure the shared tables (with included modules) here */
  
      builder.Entity<AppUser>(b =>
      {
          b.ToTable(AbpIdentityDbProperties.DbTablePrefix +
                    "Users"); //Sharing the same table "AbpUsers" with the IdentityUser
  
          b.ConfigureByConvention();
          b.ConfigureAbpUser();
  
          /* Configure mappings for your additional properties
           * Also see the qaEfCoreEntityExtensionMappings class
           */
      });
  
      // add this..
      builder.Entity<OrganizationUnit>(b =>
      {
          b.ToTable(AbpIdentityDbProperties.DbTablePrefix + "OrganizationUnits");
  
          b.ConfigureByConvention();
  
          b.Property(ou => ou.Code).IsRequired().HasMaxLength(OrganizationUnitConsts.MaxCodeLength)
              .HasColumnName(nameof(OrganizationUnit.Code));
          b.Property(ou => ou.DisplayName).IsRequired().HasMaxLength(OrganizationUnitConsts.MaxDisplayNameLength)
              .HasColumnName(nameof(OrganizationUnit.DisplayName));
  
          b.HasMany<OrganizationUnit>().WithOne().HasForeignKey(ou => ou.ParentId);
          b.HasMany(ou => ou.Roles).WithOne().HasForeignKey(our => our.OrganizationUnitId).IsRequired();
  
          b.HasIndex(ou => ou.Code);
      });
  
      builder.Ignore<OrganizationUnitRole>();
  
      builder.Configureqa();
  }
  

  DbContextModelCreatingExtensions:

  builder.Entity<UnitCategory>(b =>
  {
      b.ToTable("UnitCategory");
      b.HasMany(x => x.OrganizationUnits).WithOne().HasForeignKey("UnitCategoryId");
      b.ConfigureByConvention();
  });
  

  EfCoreEntityExtensionMappings:

  ObjectExtensionManager.Instance
      .MapEfCoreProperty<OrganizationUnit, Guid?>(
          "UnitCategoryId",
          b => b.HasMaxLength(64)
      );
  

  

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  alkaabi created 6 years ago

  Thnak you, Works like a charm.

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