inside my file ./functions/login_registration_functions.js
I have the following code
var methods = {
check_if_not_null: function (item_to_be_checked, item_to_store_the_checked_item) {
if(item_to_be_checked != null){
item_to_store_the_checked_item = item_to_be_checked;
}
}
};
module.exports = methods;
and I am calling it inside my routes.js file
var log_reg_funcs = require('./functions/login_registration_functions.js');
and I am calling the method inside my put call
log_reg_funcs.check_if_not_null(req.body.title, request.title);
but it doesn't work. when I replace the above code with below:
if(req.body.title != null){
request.title = req.body.title;
}
it works fine
why am I missing here?
When you are doing this:
item_to_store_the_checked_item = item_to_be_checked;
when item_to_store_the_checked_item is the argument to your function, then you are not changing the original variable that was used when calling your function but only your local copy of the passed value that is in your function.
If you passed and object and changed one of its properties then it would work as you expect.
For example if you had:
var methods = {
check_if_not_null: function (item_to_be_checked, object_to_store, object_key) {
if(item_to_be_checked != null){
object_to_store[object_key] = item_to_be_checked;
}
}
};
then you'd be able to do:
log_reg_funcs.check_if_not_null(req.body.title, request, 'title');
(it's strange for JavaScript to use underscores instead of camelcase but I'm keeping your style here)