Field Validation module
Field Validation looks like a very useful module. It allows validation of fields (who would have thought!), and includes:
•Regular expression•Numeric values (optionally specify min and / or max value)•length (optionally specify min and / or max length)•number of words (optionally specify min and / or max words )•Plain text (disallow tags)•Must be empty (Anti-Spam: Hide with CSS)•Words blacklist•number of selections (optionally specify min and / or max selections )•Unique•Match against a field•Match against a property•Specific value(s)•Require at least one of several fields•Equal values on multiple fields•Unique values on multiple fields•PHP Code (powerfull but dangerous)•Date range
It works with the field that you create yourself through 'Manage fields'
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