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org.codehaus.groovy.grails.web.metaclass
[Groovy] Class WithFormMethod

java.lang.Object
  org.codehaus.groovy.grails.web.metaclass.WithFormMethod

class WithFormMethod
extends java.lang.Object

Implementation of the "Synchronizer Token Pattern" for Grails that handles duplicate form submissions by inspecting a token stored in the user session.

Authors:
Graeme Rocher
Since:
1.1

Method Summary
protected boolean isTokenValid(GrailsWebRequest webRequest)

Checks whether the token in th request is valid.
protected java.lang.Object resetToken(GrailsWebRequest webRequest)

Resets the token in the request
TokenResponseHandler withForm(GrailsWebRequest webRequest, groovy.lang.Closure callable)

 
Methods inherited from class java.lang.Object
java.lang.Object#wait(), java.lang.Object#wait(long), java.lang.Object#wait(long, int), java.lang.Object#equals(java.lang.Object), java.lang.Object#toString(), java.lang.Object#hashCode(), java.lang.Object#getClass(), java.lang.Object#notify(), java.lang.Object#notifyAll()
 

Method Detail

isTokenValid

protected boolean isTokenValid(GrailsWebRequest webRequest)
Checks whether the token in th request is valid.
Parameters:
request - The servlet request

resetToken

protected java.lang.Object resetToken(GrailsWebRequest webRequest)
Resets the token in the request

withForm

TokenResponseHandler withForm(GrailsWebRequest webRequest, groovy.lang.Closure callable)

Main entry point, this method will check the request for the necessary TOKEN and if it is valid will call the passed closure.

For an invalid response an InvalidResponseHandler is returned which will invoke the closure passed to the handleInvalid method. The idea here is to allow code like: 


 withForm {
   // handle valid form submission
 }.invalidToken {
    // handle invalid form submission
 }

 

Groovy Documentation