Add check for numeric string length #115
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Check numeric string length to fit into the database column.
When adding a meta with numeric string of length more than 20 characters a database exception occurs (if the database honours full column definition of
DECIMAL(36, 16)
). Adding a regular expression to check the length of integer and fractional parts will avoid that. Regular expression checks for optional negative sign, an integer part of 1 to 20 characters and an optional fractional part up to 16 characters.