[英]Invalid Column Name on EF7 - RC2
我在實體框架RC 2上收到錯誤“無效的列名稱”,以下是我的實體
public class Article : IEntityBase
{
public Article()
{
TagMaps = new List<ArticleTagMap>();
}
public int Id { get; set; }
[Required, MaxLength(100), MinLength(3)]
public string Slug { get; set; }
[Required]
public string Title { get; set; }
[Required]
public string Description { get; set; }
[MaxLength(255)]
public string ShortDescription { get; set; }
[MaxLength(255)]
public string Metadata { get; set; }
public virtual ICollection<ArticleTagMap> TagMaps { get; set; }
}
public class Tag :IEntityBase
{
public Tag()
{
TagMaps = new List<ArticleTagMap>();
}
public int Id { get; set; }
[Required, MaxLength(100)]
public string TagName { get; set; }
public virtual ICollection<ArticleTagMap> TagMaps { get; set; }
}
public class ArticleTagMap : IEntityBase
{
public int Id { get; set; }
[Required]
public int ArticleId { get; set; }
[Required]
public int TagId { get; set; }
[ForeignKey("TagId")]
public virtual Tag Tag { get; set; }
[ForeignKey("ArticleId")]
public virtual Article Article { get; set; }
}
在DataContext上,我添加以下代碼
protected override void OnModelCreating(ModelBuilder modelBuilder)
{
modelBuilder.Entity<ArticleTagMap>()
.HasOne(a => a.Tag)
.WithMany(b => b.TagMaps)
.HasForeignKey(c => c.TagId)
.OnDelete(DeleteBehavior.Cascade);
modelBuilder.Entity<ArticleTagMap>()
.HasOne(a => a.Article)
.WithMany(b => b.TagMaps)
.HasForeignKey(c => c.ArticleId)
.OnDelete(DeleteBehavior.Cascade);
}
從SQL事件探查器,我捕獲生成的腳本
exec sp_executesql N'SELECT [a0].[Id], [a0].[ArticleId], [a0].[ArticleId1], [a0].[TagId], [a0].[TagId1]
FROM [ArticleTagMaps] AS [a0]
INNER JOIN (
SELECT DISTINCT TOP(1) [a].[Id]
FROM [Campaigns] AS [x]
INNER JOIN [Articles] AS [x.Article] ON [x].[ArticleId] = [x.Article].[Id]
INNER JOIN [Articles] AS [a] ON [x].[ArticleId] = [a].[Id]
WHERE [x.Article].[Slug] = @__slug_0
ORDER BY [a].[Id]
) AS [a1] ON [a0].[ArticleId1] = [a1].[Id]
ORDER BY [a1].[Id]',N'@__slug_0 nvarchar(4000)',@__slug_0=N'bantu-pekak-sanin'
表中沒有ArticleId1和TagId1列名。 我已經奮斗了幾個小時,仍然找不到任何解決方案。 請幫忙 :)
1)嘗試從OnModelCreating
刪除.HasForeignKey()
-您已經在[ForeignKey(...)]
屬性中擁有此信息(或者,從ArticleTagMap
刪除此屬性),然后重新創建遷移腳本
2)您不需要在事件探查器中捕獲SQL。 您可以檢查生成的遷移腳本(或帶有整個模型的migrations/<DbContextName>DbModelSnapshot.cs
文件),以確保EF正確地“理解”了模型
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