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jradxl View Drop Down
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Joined: 14-Jun-2011
Posts: 30
Post Options Post Options   Quote jradxl Quote  Post ReplyReply Direct Link To This Post Topic: Many to Many on same table
    Posted: 26-Apr-2012 at 5:19pm
Hi,
(Code First, EF 4.2.0.0, DF 6.1.6)

Hopefully this code snippet is sufficient to explain.
The UserGroup Entity has these two properties
    public class UserGroup : BaseEntity     {
//....
  public RelatedEntityList<UserGroup> AllChildren { get { return null; } }         public RelatedEntityList<UserGroup> AllParents { get { return null; } }

The Entity's config is to related them Many to Many

    class UserGroupConfiguration : EntityTypeConfiguration<UserGroup>     {         internal UserGroupConfiguration()         {             this.HasMany(i => i.AllChildren)             .WithMany(c => c.AllParents)             .Map(mc =>             {                 mc.MapLeftKey("UserGroupId");                 mc.MapRightKey("ParentUserGroupId");                 mc.ToTable("UserGroupsHierarchy");             });         }     }

Such that it is Many to Many on itself.

Would you expect DF to automatically populate the "UserGroupsHierarchy" linker table
in the same way as a linker table between two different tables does.
It isn't at present!

Thanks
John





Edited by jradxl - 26-Apr-2012 at 5:25pm
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DenisK View Drop Down
IdeaBlade
IdeaBlade


Joined: 25-Aug-2010
Posts: 715
Post Options Post Options   Quote DenisK Quote  Post ReplyReply Direct Link To This Post Posted: 30-Apr-2012 at 4:18pm
Hi jradxl,

Yes it should and in my test, it does. I've attached my test solution here. Perhaps you can see what's different between mine and yours.

uploads/912/Console_T11812.zip
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