I am new to javascript and i am having trouble solving this error. I get the message: "callback is not a function" at:"return callback(rolesArray)".
Rol.getAllRoles = function(callback){
sql = "select role from Role;";
var rolesArray = [];
var role;
mysql.connection(function(err,conn){
if (err){
return callback(err);
}
conn.query(sql,function(err,rows){
if (err){
return callback(err);
}
for(var i=0; i < rows.length; i++){
role = rows[i].role;
rolesArray.push(rol);
}
console.log("roles: " + rolesArray);
return callback(rolesArray);
});
});
} The console.log outputs:"roles: admin,customer" so the connection with the database works.