Input validating

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The field under validation must be a valid JSON string.The field under validation must be less than the given To determine the MIME type of the uploaded file, the file's contents will be read and the framework will attempt to guess the MIME type, which may be different from the client provided MIME type.The field under validation must exist on a given database table. The field under validation must be an IPv4 address.The field under validation must be an IPv6 address.A field is considered "empty" if one of the following conditions are true: corresponds to the file size in kilobytes.

If the validation rules pass, your code will keep executing normally; however, if validation fails, an exception will be thrown and the proper error response will automatically be sent back to the user.

If a game collector registers with our application and they own more than 100 games, we want them to explain why they own so many games.

For example, perhaps they run a game resale shop, or maybe they just enjoy collecting.

In some situations, you may wish to run validation checks against a field only if that field is present in the input array.

To quickly accomplish this, add the Sometimes you may wish to add validation rules based on more complex conditional logic.

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