Is something in the http protocol that will help me find out, or should I check the fields by myself.
If identical field values can be submitted more than once, should I add a dummy hidden field or something?
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Is something in the http protocol that will help me find out, or should I check the fields by myself.
If identical field values can be submitted more than once, should I add a dummy hidden field or something?
If you want to be completely sure you’ll need to include a unique id for the form in a hidden field in the form, and check it against a data store all server threads can see (e.g. a db) before handling the form data.