javascript - How can I validate file type before upload use SailsJS Skipper -


as title, can not check file type before upload. verify , don't allow save data after file uploaded successfully. below basic code

updateavatar : function(data, context, req, res) {   req.file('avatar').upload({       dirname: '../../assets/images/avatar'     }, function (err, files) {      var allowexts = ['image/png', 'image/gif', 'image/jpeg'];      if (err)       return res.servererror(err);      if (files.length === 0)        return res.badrequest('no file uploaded!');      if (allowexts.indexof(files[0].type) == -1)       return res.badrequest('file type not supported!');      // save database here   }); }

what should correct code? sorry bad english! lot!

this took me time research on, credits darkstra gave idea of can raw file properties, content-type or file name, can split file extension , our checkings

you can check out answer here

the main thing take note of this

req.file('foo')._files[0].stream contains need handle our file, can console.log see content of it.

thanks, atleast can manipulation of choice.


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