CODEWITHSUNDEEP
node.jsexpress
Kumar
Kumar

Reputation: 237

nodejs perform common action for all request

I am using node js with express. Now i need to perform an common action for all requests ex. cookie checking

app.get('/',function(req, res){
   //cookie checking
   //other functionality for this request 
}); 

app.get('/show',function(req, res){
   //cookie checking
   //other functionality for this request 
});

Here cookie checking is an common action for all request. So how can i perform this with out repeating the cookie checking code in all app.get.

Suggestions for fixing this? Thanks in advance

Upvotes: 6

Views: 2489

Answers (3)

Francesco
Francesco

Reputation: 522

Using middleware is high reccomended, high performable and very cheap. If the common action to be performed is a tiny feature I suggest to add this very simple middleware in your app.js file:

...
app.use(function(req,res,next){
    //common action
    next();
});...

If you use router : write the code before the app.use(app.router); instruction.

Upvotes: 2

Peter Lyons
Peter Lyons

Reputation: 146044

Check out the loadUser example from the express docs on Route Middleware. The pattern is:

function cookieChecking(req, res, next) {
    //cookie checking
    next();
}


app.get('/*', cookieChecking);

app.get('/',function(req, res){
    //other functionality for this request 
}); 

app.get('/show',function(req, res){
   //other functionality for this request 
});

Upvotes: 8

balupton
balupton

Reputation: 48650

app.all or use a middleware.

Upvotes: 3

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