Validating Matching Strings

问题

When I use the Validation feature in Laravel, how can I add a pre-defined strings that are allowed in an Input?

For example, let's say I want the Input to contain only one of the following: foo,bar,baz, how can I do that?

$validator = Validator::make($credentials, [
      'profile' => 'required|max:255', // Here I want Predefined allowed values for it
]);

回答1:

It is recommended in Laravel docs to put the validation rules in an array when they get bigger and I thought 3 rules were sufficient. I think it makes it for a more readable content but you do not have to. I added the regex portion below and I have it works. I am not that great with regexing stuff. Let me know.

$validator = Validator::make($credentials, [
      'profile' => ["required" , "max:255", "regex:(foo|bar|baz)"]  
]);

回答2:

Best to use the 'in' validation rule like this:

$validator = Validator::make($credentials, [
      'profile' => ["required" , "max:255", "in:foo,bar,baz"]  
]);

来源：https://stackoverflow.com/questions/31439203/validating-matching-strings