This seems like such a basic question but it often gets me. What is the logic that determines whether the form helper marks a field as required or not? For example, I have a varchar field that can be null and accepts up to 100 characters. I have set a maxLength validation rule (that also has required => false, just for good measure). In my mind this is not a required field, but the form helper thinks it is. All I want to do is make sure the max limit is not exceeded. Removing the validation rule removes the required flag from the form. Where can I find the logic and how can I adjust it at 'run time'?
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