Expres : Editing app.param() for multiple routes

[Zagor_1]

I edit this todo app and make a multiple topics version of it. Like todos for X, todos for Y, todos for Z...

However i couldn't find a proper way to edit this part :

app.param('task_id',function(req,res,next,taskId){

    req.db.tasks.findById(taskId,function(error,task){
        if(error) return next(error);
        if(!task) return next(new Error('Task is not found'));

        //if there's data, we store it in the request and proceed to the next middleware:
        //
        req.task = task;
        return next();
    }); 
});

Because instead of tasks , i have now xtopic,ytopic,...

So if i add a task to Y,Z, or another topic, it should restored in that part.
But when i try to mark "done" a task in Y, or Z, it creates an error.
How can i restore all tasks by its topic?

This is how it looks like :
https://postimg.org/gallery/2r8uva4pa/

[rproffitt]

I gave this post a few days and to me, either you are asking folk to write your code or the question is unclear.

Read https://www.daniweb.com/programming/threads/435023/read-this-before-posting-a-question and then clarify your question.