Question

I’m using WCF Data services with Entity Framework 4.1

I have 2 tables with many to many relationship.
I’m trying to get an entity based on a child value.

Table 1 (Suppliers) -> ID (PrimaryKey) ,Name ,isEnabled ,Timestamp
Table 2 (Categories) -> RGID (PrimaryKey) , Name, etc....

I’ve tried to to write the URI like this.
My goal is to retrieve all Suppliers that has a Category with RGID = 3.

http://localhost/WCFS/WCFService.svc/Suppliers?$expand=Categories&$filter=RGID eq 3

and like this

   http://localhost/WCFS/WCFService.svc/Suppliers?$expand=Categories&$filter=Categories/RGID eq 3

no luck.
for the second attampt I get

The 'RGID ' is not allowed at position 11. Member access or specifying a type identifier on a resource set reference is not allowed.

So how to do it???

thanks

Answer 1

Use navigation:

~/Categories(3)/Suppliers