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rated 0 times [  146] [ 5]  / answers: 1 / hits: 6830  / 8 Years ago, fri, april 8, 2016, 12:00:00

I have two files (for example).



./database/user.js



module.exports = {

    getUniqueByID: function(params){

        doSomething();

        return anUserObject;

    }

};


./database/uperm.js



var dbUser = require('./user.js');

module.exports = {

    createNew: function(params){

        dbUser.getUniqueByID(uid);

        doSomethingElse();

    }

};


Function createNew() from uperm.js always throws an exception:



.../uperm.js:123

dbUser.getUniqueByID(uid);

TypeError: dbUser.getUniqueByID is not a function


But, if i change ./database/uperm.js to be:



module.exports = {

    createNew: function(params){

        require('./user.js').getUniqueByID(uid);

        doSomethingElse();

    }

};


Then getUniqueByID() from user.js is called by createNew() from uperm.js, without any exception.



But I don't whant to use require('./user.js') everywhere, instead of assigning it to dbUser variable.



What's wrong in case of using variable? Absolutely similar code in other files of my project seems to be ok.


More From » node.js
 Answers
8

Since you have circular dependencies, try to set properties of the module.exports instead of directly overwriting it:



var functions = {

   getUniqueByID: xxx

};



for(var key in functions) {

    module.exports[key] = functions[key];

}


(From the idea provided in this answer)


[#29591] Wednesday, April 6, 2016, 8 Years  [reply] [flag answer]
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