Node.js表示验证器验证req.body不为空

Question

Is there any elegant way to use express-validator to validate the req.body I got is not empty?

I didn't see any appropriate validator in here: https://github.com/chriso/validator.js

And I prefer not to use (Object.keys(req.body).length == 0)

Is there any custom validator I should build to solve this?

Thanks

Answer 1

For latter question 2. How to create a conditional validation (at least one of 'a','b','c' params is required). Not tested but something like below should work:

var hasRequiredField = Object.keys(req.body).some(function(key) {
return ['a', 'b', 'c'].indexOf(key) >= 0;
});

if(hasRequiredField) {
} else {

}