jimbo23 / tweeter-server

The architecture:

• Router: route the request to corresponding function the controller
• Controller: responsible for processing request and responsible
• Service: handle the business logic

Some gotchas while writing express app with OOP

• In a class method,

  getTweets = (req, res) => {
    console.log(this);
  };
  

  The this here is pointing to the instance of the class. However, a small change here:

  getTweets(req, res){
    console.log(this);
  };
  
  OR
  
  getTweets = function(req, res){
    console.log(this);
  };
  

  This won't work as expected, because the this keyword is not pointing to the instance, instead it points to undefined somehow. Hence to avoid this, rule of thumb is always use the method above to declare class method!