在每次迁移中，我都会得到种子角色的奇怪行为。无论您进行了什么更改，迁移都将删除种子角色并再次插入它们。当项目中未进行任何修改时，将创建下面给出的迁移。
所有其他模型均已正确播种，并且只有在修改后才考虑在迁移中使用。
我正在使用带有个人身份验证的ASP .NET Core 2.1
用于播种的DbContext类
public class ApplicationDbContext : IdentityDbContext
{
public ApplicationDbContext(DbContextOptions<ApplicationDbContext> options)
: base(options)
{
}
protected override void OnModelCreating(ModelBuilder modelBuilder)
{
base.OnModelCreating(modelBuilder);
#region Seed-Roles
modelBuilder.Entity<IdentityRole>().HasData(new IdentityRole { Name = "SuperAdmin", NormalizedName = "SuperAdmin".ToUpper() });
modelBuilder.Entity<IdentityRole>().HasData(new IdentityRole { Name = "Owner", NormalizedName = "Owner".ToUpper() });
modelBuilder.Entity<IdentityRole>().HasData(new IdentityRole { Name = "Admin", NormalizedName = "Admin".ToUpper() });
modelBuilder.Entity<IdentityRole>().HasData(new IdentityRole { Name = "Tester", NormalizedName = "Tester".ToUpper() });
modelBuilder.Entity<IdentityRole>().HasData(new IdentityRole { Name = "User", NormalizedName = "User".ToUpper() });
modelBuilder.Entity<IdentityRole>().HasData(new IdentityRole { Name = "Developer", NormalizedName = "Developer".ToUpper() });
#endregion
}
}
迁移
protected override void Up(MigrationBuilder migrationBuilder)
{
migrationBuilder.DeleteData(
table: "AspNetRoles",
keyColumns: new[] { "Id", "ConcurrencyStamp" },
keyValues: new object[] { "4ae1956e-7895-4b0f-a390-22b5c41c1a62", "67b6f36e-5a3c-456b-89ef-c667cf9fe0d3" });
migrationBuilder.DeleteData(
table: "AspNetRoles",
keyColumns: new[] { "Id", "ConcurrencyStamp" },
keyValues: new object[] { "55ebaa87-e350-4d88-8d6f-2c7d833dd24d", "ed91ae85-918f-4651-b7f9-42f6dd90d9b2" });
migrationBuilder.DeleteData(
table: "AspNetRoles",
keyColumns: new[] { "Id", "ConcurrencyStamp" },
keyValues: new object[] { "6ae683e2-5df3-425f-8df7-66581ce56259", "6a4ff0dc-f82f-4c8d-85a1-0258bbf905d7" });
migrationBuilder.DeleteData(
table: "AspNetRoles",
keyColumns: new[] { "Id", "ConcurrencyStamp" },
keyValues: new object[] { "b06b021d-b369-44b3-a5d9-eeb3ef8e245d", "1363d06f-a0cb-4d10-8495-866c219f5560" });
migrationBuilder.DeleteData(
table: "AspNetRoles",
keyColumns: new[] { "Id", "ConcurrencyStamp" },
keyValues: new object[] { "b5331aad-70ec-47a2-8dd0-bc2508bdc353", "ae98d41a-e8fa-46dd-b081-96f9a1934e1e" });
migrationBuilder.DeleteData(
table: "AspNetRoles",
keyColumns: new[] { "Id", "ConcurrencyStamp" },
keyValues: new object[] { "b9fec2b5-6fd2-46a5-a960-a8d26f16d269", "413922ea-76f0-4d2d-8f1a-d9157fb31df0" });
migrationBuilder.InsertData(
table: "AspNetRoles",
columns: new[] { "Id", "ConcurrencyStamp", "Name", "NormalizedName" },
values: new object[,]
{
{ "34e62595-2afc-43f9-bbcd-267773129d69", "c47b3378-ef47-4661-8a01-ceb2fbe34d7c", "SuperAdmin", "SUPERADMIN" },
{ "bc020d73-e415-4d4e-8dfe-577d81755f80", "77d4f05b-6677-4e99-9ada-3f6ec083c14b", "Owner", "OWNER" },
{ "cbfdbeb0-f800-4b42-b735-db1449fcc4e4", "2b8f6650-e2ee-46c1-a70f-36725fb893b3", "Admin", "ADMIN" },
{ "cd0e178d-f9cb-448e-8ecc-49914aa63c5d", "23ee6cfe-4bc2-4c6c-847a-d03aa0087e1f", "Tester", "TESTER" },
{ "4572a259-0d7c-4d1c-ad1d-e0230b7dd1fb", "bcc79860-9207-42bd-8a9c-8aeef0b5fe56", "User", "USER" },
{ "334fd762-7f37-48aa-afdc-a87ef8d0593e", "d929467e-44be-4a94-912f-071702316c85", "Developer", "DEVELOPER" }
});
}
protected override void Down(MigrationBuilder migrationBuilder)
{
migrationBuilder.DeleteData(
table: "AspNetRoles",
keyColumns: new[] { "Id", "ConcurrencyStamp" },
keyValues: new object[] { "334fd762-7f37-48aa-afdc-a87ef8d0593e", "d929467e-44be-4a94-912f-071702316c85" });
migrationBuilder.DeleteData(
table: "AspNetRoles",
keyColumns: new[] { "Id", "ConcurrencyStamp" },
keyValues: new object[] { "34e62595-2afc-43f9-bbcd-267773129d69", "c47b3378-ef47-4661-8a01-ceb2fbe34d7c" });
migrationBuilder.DeleteData(
table: "AspNetRoles",
keyColumns: new[] { "Id", "ConcurrencyStamp" },
keyValues: new object[] { "4572a259-0d7c-4d1c-ad1d-e0230b7dd1fb", "bcc79860-9207-42bd-8a9c-8aeef0b5fe56" });
migrationBuilder.DeleteData(
table: "AspNetRoles",
keyColumns: new[] { "Id", "ConcurrencyStamp" },
keyValues: new object[] { "bc020d73-e415-4d4e-8dfe-577d81755f80", "77d4f05b-6677-4e99-9ada-3f6ec083c14b" });
migrationBuilder.DeleteData(
table: "AspNetRoles",
keyColumns: new[] { "Id", "ConcurrencyStamp" },
keyValues: new object[] { "cbfdbeb0-f800-4b42-b735-db1449fcc4e4", "2b8f6650-e2ee-46c1-a70f-36725fb893b3" });
migrationBuilder.DeleteData(
table: "AspNetRoles",
keyColumns: new[] { "Id", "ConcurrencyStamp" },
keyValues: new object[] { "cd0e178d-f9cb-448e-8ecc-49914aa63c5d", "23ee6cfe-4bc2-4c6c-847a-d03aa0087e1f" });
migrationBuilder.InsertData(
table: "AspNetRoles",
columns: new[] { "Id", "ConcurrencyStamp", "Name", "NormalizedName" },
values: new object[,]
{
{ "6ae683e2-5df3-425f-8df7-66581ce56259", "6a4ff0dc-f82f-4c8d-85a1-0258bbf905d7", "SuperAdmin", "SUPERADMIN" },
{ "55ebaa87-e350-4d88-8d6f-2c7d833dd24d", "ed91ae85-918f-4651-b7f9-42f6dd90d9b2", "Owner", "OWNER" },
{ "4ae1956e-7895-4b0f-a390-22b5c41c1a62", "67b6f36e-5a3c-456b-89ef-c667cf9fe0d3", "Admin", "ADMIN" },
{ "b5331aad-70ec-47a2-8dd0-bc2508bdc353", "ae98d41a-e8fa-46dd-b081-96f9a1934e1e", "Tester", "TESTER" },
{ "b9fec2b5-6fd2-46a5-a960-a8d26f16d269", "413922ea-76f0-4d2d-8f1a-d9157fb31df0", "User", "USER" },
{ "b06b021d-b369-44b3-a5d9-eeb3ef8e245d", "1363d06f-a0cb-4d10-8495-866c219f5560", "Developer", "DEVELOPER" }
});
}
如果我做错了，请告诉我播种角色的正确行为是什么。
答案 0 :(得分：0)
在阅读了许多问题，答案和文档之后，我才知道，如果种子值没有主键，则将在每次迁移时删除它们并重新创建它们。
通常我们不能在不提供主键值的情况下为模型提供种子，但是在Microsoft身份模型的情况下，由于主键是由身份方法本身创建的，因此可以在没有主键的情况下进行种子设置。因此，每次迁移时，种子角色的主键都会发生更改，从而导致重新创建。