"Flask Web Development" Learning Note---chapter4 web Forms

1. We use the wrapper wtforms FLASK-WTF extension to handle form generation and validation.

2. Cross-site Request Forgery (CSRF) protection

Configuration config, ' Secret_key '

3. Form class definition

From FLASK.EXT.WTF import formfrom wtforms import Stringfield, submitfieldfrom wtforms.validators import Requiredclass Na Meform (Form):    name = stringfiled (' What's your name? ', validators=[required])    submit = submitfiled (' Submit ')

4. Standard fields

Stringfieldtextareafieldpasswordfieldhiddenfielddatefield            Text Field accepts a dattime.date value in a given Formatdatetimefield   Integerfielddecimalfieldfloatfieldbooleanfieldradiofieldselectfieldselectmultiplefieldfilefieldsubmitfieldformfieldfieldl Ist

5. Standard validators

Lying trough, this is a bit old, or see wtforms documents go.

Emailequalto    useful for password validation ipaddresslengthnumberrange   Verify that value is in a numeric range optionalrequired        field contains data regexp         Regular validation urlanyofnoneof

6.