The method of using flag WTF to verify uploaded files

Using flag WTF to verify the uploaded files When defining the validation form class, filefield should be used for fields of file type, that is wtforms.FileField 。 The verifier needs to start from flash_ wtf.file Import. flask_ wtf.file.FileRequired And flask_ wtf.file.FileAllowed flask_ wtf.file.FileRequired Is used to verify that the file upload cannot be empty. flask_ […]