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Adding a [re]Captcha to a form
Recipe by Michele Comitini (michelecomitini) on 2013-01-09 in Widget

Adding a captcha to a form as shown in the book requires too much work!! ;-) Here is a simpler way to do it.

Adding a captcha to a form as shown in the book requires too much work!! ;-) Here is a simpler way to do it.

The idea is using a fake widget.

 

Model:




	def captcha_field(request=request):



	    from gluon.tools import Recaptcha



	    w = lambda x,y: Recaptcha(request,



	                              'xxxxxxxxxxxxxxxxxxxxxxx',



	                              'yyyyyyyyyyyyyyyyyyyyyyy')



	 



	    return Field('captcha', 'string', label='verify', widget=w, default='ok')



	 



	Controller:


    form = SQLFORM.factory(Field('name', requires=IS_NOT_EMPTY()),
                           Field('email', requires=[IS_NOT_EMPTY(), IS_EMAIL()]),
                           Field('content', 'text', requires=IS_NOT_EMPTY()),
                           captcha_field()),
                           )
    if form.process().accepted:
...
...
...





	 


  


  

       
            captcha  recaptcha  sqlform.factory  form  
       
  


  
    
          
        
    
    


  

    
         
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Comments (2)
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  • 0
    rochacbruno 11 years ago
    
	Nice slice!
    
	
    
	I would change a little to:
    

     def captcha_field(request=request, apikey, apisecret, fieldname="captcha", label="verify"):
    from gluon.tools import Recaptcha
    w = lambda x,y: Recaptcha(request,
                              'xxxxxxxxxxxxxxxxxxxxxxx',
                              'yyyyyyyyyyyyyyyyyyyyyyy')
 
    return Field(fieldname, 'string', label=label, widget=w, default='ok')
    

    
	 
    

    
	And using with
    

    captcha_field(apikey, apisecret, "mycaptcha", "write the security code")
    

    
	Also I think it can be included as
    

    Field.captcha(.....)
    

    replies (1)
    • michelecomitini 11 years ago
      Those are nice, also it should be moved to a module by using current.request

  • 0
    jeremy-martin-11354 9 years ago
    
	Holy cow, so helpful. The only thing I can add is that if you're doing a register form with a password, doing the SQLFORM factory will not give you the "verify password" field by default. And if you update, you'll need to filter the form vars. So this is what I'm doing:
    

    
	 
    

    form = SQLFORM.factory(db.auth_user
                       ,Field("verify_password", "password"
                            ,requires=IS_EXPR('value=={0}'.format(repr(request.vars.get('password', None)))
                                ,error_message="Password fields don't match"))
                       ,Field("captcha", widget=captcha_callable, default="ok"))

if form.process().accepted:

    db.auth_user.insert(**db.auth_user._filter_fields(form.vars))

    



        
  

  



            
            


            

          


        

      

      


      
      
      
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