將默認值分配給快遞公司的請求對象

Question

如何確保特定對象可用於我處理的每個請求？

var somethingImportant = "really important"; 
var app = express(); 

// This is just a hypothetical example of what I'm after... 
app.mixThisInWithRequest({ 
    somethingImportant: somethingImportant 
}); 

app.use(function (request, response, next) { 
    console.log(request.somethingImportant); 
}); 

鑑於上面的例子，是否有類似於mixThisInWithRequest函數的設施？

Answer 1

將其添加到中間件request對象，在app.use鏈，早在你需要它：

var somethingImportant = "really important"; 
var app = express(); 

app.use(function (request, response, next) { 
    request.somethingImportant = somethingImportant; 
    next(); 
}); 
app.use(function (request, response, next) { 
    console.log(request.somethingImportant); 
});