Creating a generic validator for arrays of strings in Lithium

Today i needed to validate some input from a form before passing it into MongoDB in Lithium and found a shortcoming in the inbuilt validation system. It does not support array of values.

Consider the following simple validation rule on a string input that works for blocking empty string for appearing in your database:

Try passing an array to “foo” and it fails nicely. After filing a ticket for this kind of feature and discussed it on the IRC channel, I sat down and created a middleground solution by building my own validator that reused the inbuilt validator patterns for strings, only supporting array usage. Check this out:

I hope we can see this functionality in Lithium itself, but for now this little validator allows you to reuse any (not tested on all) validations found in Validator. Enjoy

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