EF Code first :Remove Extra foreign keys from a central many to many relationships table

Question

I have a central table to handle translations, many entities could have a collection of translations. I'm using EF 6.0 code first. For each entity EF generate a foreign key in Translation table, to avoid this, I decide to add 3 columns :TableName, ColumnName and EntityKey to point to the given table.

public class CurrencyModel
{
  // more staff here 
  public ICollection<TranslationModel> Translations {get; set; }
}
public class CityModel
{
  // more staff here 
  public ICollection<TranslationModel> Translations {get; set; }
}

public class CountryModel
{
  // more staff here 
  public ICollection<TranslationModel> Translations {get; set; }
}

public class CategoryModel
{
  // more staff here 
  public ICollection<TranslationModel> Translations {get; set; }
}

How can I force EF to do not generate a foreign key for each table ? Thank you in advance for your help

Answer 1

在创建和添加迁移之后，以及在更新数据库之前，您应该使用流利的api，转到DbContext类并检查OnModelCreating方法。在此方法中，您可以在某些实体上看到.HasForeignKey（e => e ....）。 。OnModelCreating方法是您可以覆盖EF约定并强制其例如不为每个表生成外键的方法。