Fluent NHibernate HasMany Foreign Key Mapping Problem

Question

I\'m trying to map a simple data structure in nhibernate

Tables:

Employees
employeeID int
username varchar(30)
departmentID int

Departm         


        

Answer 1

You need to specify the key column.

HasMany(m => m.Employees).KeyColumn("DepartmentId");

Answer 2

You need to use the KeyColumn method on the HasMany declaration, as explained in the documentation

Answer 3

You may either: create a Fluent NHibernate convention so that the HasMany "foreign key" is created as <'Name'>ID.

Or change the Department mapping:

 HasMany(m => m.Employees).KeyColumns.Add("DepartmentID")