Add exception message, highlighting to user they have not specified t…

…ablename
robertmircea · Jul 26, 2012 · aa8c5b9 · aa8c5b9
1 parent 5969210
commit aa8c5b9
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/src/FluentMigrator.Runner/Generators/Generic/GenericGenerator.cs b/src/FluentMigrator.Runner/Generators/Generic/GenericGenerator.cs
@@ -212,6 +212,9 @@ public virtual string GenerateForeignKeyName(CreateForeignKeyExpression expressi
 
         public override string Generate(DeleteForeignKeyExpression expression)
         {
+            if (expression.ForeignKey.ForeignTable == null)
+                throw new ArgumentNullException("Table name not specified, ensure you have appended the OnTable extension. Format should be Delete.ForeignKey(KeyName).OnTable(TableName)");
+
             return string.Format(DeleteConstraint, Quoter.QuoteTableName(expression.ForeignKey.ForeignTable), Quoter.QuoteColumnName(expression.ForeignKey.Name));
         }