Re: executing while loop and simultaneously redirecting to new page on form submission

That did the trick.  You are a true gentleman and a scholar. Thank you.

On Thursday, October 13, 2016 at 10:59:28 AM UTC-4, Björn Pedersen wrote:
>
> Do it the other way around:
>  start the LED code in a thread and do the redirect in the main code.
>
> Am Donnerstag, 13. Oktober 2016 16:07:03 UTC+2 schrieb Peter Tsapatsaris:
>>
>> Thanks for the reply Björn - I am attempting to start a new thread in 
>> python that redirects to the webpage, but no luck so far.
>>
>> def index(self):
>>
>> return open('index.html')
>>
>> index.exposed = True
>>
>> def ledDisplay(self, message):
>>
>> if message:
>>
>> def newFunc():
>>
>> raise cherrypy.HTTPRedirect("thanks.html")
>>
>> thread.start_new_thread(newFunc, ()) 
>>
>> while True:
>>
>>                                //Execute LED code on loop.
>>
>> The LED code gets executed, but the redirect doesn't happen.  I can get 
>> other code within newFunc to run (like a print statement), but I can't get 
>> it to redirect.  The server throws an unhandled exception error.
>>
>> Any additional advice would be greatly appreciated!
>>
>> On Thursday, October 13, 2016 at 3:24:27 AM UTC-4, Björn Pedersen wrote:
>>>
>>> Hi,
>>>
>>> this is a typical use case for multi-threaded programming. 
>>>
>>> Your web interface just  sets a variable (protected by a mutex), and a 
>>> background  thread does the LED output.
>>>
>>> Björn
>>>
>>> Am Donnerstag, 13. Oktober 2016 07:44:03 UTC+2 schrieb Peter Tsapatsaris:
>>>>
>>>> Hello everyone,
>>>>
>>>> I've been using cherrypy on a Raspberry Pi to run a web controllable 
>>>> LED matrix.  I've run into a bit of a wall.  Short version of question: Is 
>>>> it possible to send the user to a new webpage in a function WITHOUT 
>>>> returning or breaking?  I am trying to execute code in a block below the 
>>>> redirect. 
>>>>
>>>> Long version:
>>>>
>>>> The LED control code executes on a while loop after receiving input 
>>>> from an an HTML form like the following:
>>>>
>>>>     <form name="myform" class="rounded" action="ledDisplay" 
>>>> method="GET" onsubmit="archive.html">         
>>>>         <input type="text" class="box" name="message" maxlength="1000" 
>>>> placeholder="enter your message" />
>>>>         <input type="submit">
>>>>     </form>
>>>>
>>>> The ledDisplay function executes the while loop with the message from 
>>>> the form.  My problem is this--after submission, I would like to redirect 
>>>> the user to a new webpage (e..g, "thanks.html").  However, when I redirect 
>>>> it either executes BEFORE the while loop, thus preventing the LED from 
>>>> running, or executes AFTER the while loop, i.e., never.  
>>>>
>>>> Does anyone know if there is a way to get CherryPy to send the user to 
>>>> a new webpage and then continue to execute a code block?  Here is a 
>>>> skeleton of the code I'm working with:
>>>>
>>>> class myApp:
>>>>
>>>> def index(self):
>>>>
>>>> return open('index.html')
>>>>
>>>> index.exposed = True
>>>>
>>>> def ledDisplay(self, message):
>>>>
>>>>
>>>> if message:
>>>>
>>>> raise cherrypy.HTTPRedirect("thanks.html") /* This prevents the loop 
>>>> from executing.  Any way to open the page and still execute the loop*/
>>>>
>>>>  
>>>>
>>>> while True:
>>>>
>>>>                                //Execute LED code on loop.
>>>> Apologies if I'm being obtuse - I am new to programming. 
>>>>
>>>

-- 
You received this message because you are subscribed to the Google Groups "cherrypy-users" group.
To unsubscribe from this group and stop receiving emails from it, send an email to cherrypy-users+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/[email protected]
To post to this group, send email to cherrypy-users-/JYPxA39Uh5TLH3MbocFF+G/[email protected]
Visit this group at https://groups.google.com/group/cherrypy-users.
For more options, visit https://groups.google.com/d/optout.