Start of echomail subscribing

app/Models/System.php

@@ -72,6 +72,14 @@ class System extends Model
 
 	/* METHODS */
 
+	public function echoareas()
+	{
+		return Echoarea::select('echoareas.*')
+			->join('address_echoarea',['address_echoarea.echoarea_id'=>'echoareas.id'])
+			->join('addresses',['addresses.id'=>'address_echoarea.address_id'])
+			->where('addresses.system_id',$this->id);
+	}
+
 	/**
 	 * Return the system's address in the same zone
 	 *