Heroku doesn't allow you to write directly to the filesystem. It's because of the way they deploy each app as a self-contained 'slug'. If you want to write files you'll need to use something like Amazon's S3 or serialize the data and save it to the database.
How to make any DIRECTORY WRITABLE , on heroku?
質問
How to make any DIRECTORY WRITABLE , on heroku ??
because I make an app on facebook , with heroku hosting but there is some DIRECTORY should be WRITABLE to run my app .
thank you
解決
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