Added foreign key relations to all core components

models/participant.go

@@ -20,6 +20,8 @@ type DBParticipant struct {
 	Wrapup                           *string `gorm:"type:json"`
 	WrapupExpected                   *bool
 	WrapupRequired                   *bool
+
+	Sessions []DBSession `gorm:"foreignKey:ParticipantId;references:Id"`
 }
 
 func (DBParticipant) TableName() string {