gistfile1.js

function updateGoals(user, goal, callback) {
    // Check if mainGoal has an ID
    // If no id was found, create a new mainGoal 
    var goalId = goal._id; 
    if(!goalId) {

        // Before creating the goal, check if user has goal with that name
        Goal.findOne({name: goal.name, owner: user.id}, function(err, g){
            if(err) return callback(err); 
            if(g) return callback(new Error('There is another goal with that name')); 

            console.log('new goal');
            var newGoal = new Goal(); 

            newGoal.owner = user.id;
            newGoal.name = goal.name; 
            newGoal.created = new Date(); 

            newGoal.save(function(err) {
                if(err) return callback(err); 
                return callback(null, newGoal); 
            }); 
        }); 


    } else {
        // If an ID was found, lookup that main goal 
        Goal.findOne({_id : goal._id}, function(err, g) {
            if(err) return callback(err); 
            console.log("goal found"); 
            if(g) {
                console.log("id: " + g._id);
                //mg = mainGoal; 
                if(goal.name) g.name = goal.name; 
                if(goal.motivation) g.motivation = goal.motivation; 
                if(goal.achievements) g.achievements = goal.achievements; 
                if(goal.tasks) g.tasks = goal.tasks;
                
                g.owner = user._id; 

                g.save(function(err) {
                    if(err) return callback(err); 
                    else return callback(null, g); 
                });
            } else {
                var error = new Error("No goal passed with request"); 
                return callback(error); 
            }
        });
    }
}