[Seaside] Weird back button problem

Bob Arning arning315 at comcast.net
Fri Apr 6 13:17:20 UTC 2012


This might help spot such problems:

WAFormTag>>with:

with: aBlock

     | uniqueMessage |

     uniqueMessage _ 'starting a form'.
     Notification signal: uniqueMessage.
     [
         super with: aBlock
     ] on: Notification do: [ :ex |
         ex messageText = uniqueMessage ifTrue: [self halt].
         ex pass
     ]

Cheers,
Bob

On 4/6/12 7:38 AM, Lawrence Kellogg wrote:
> On Apr 6, 2012, at 7:05 AM, Johan Brichau wrote:
>
>> Larry,
>>
>> I'm really answering off the top of my head now, but nested html forms are indeed not allowed. It's likely that this is causing the trouble.
>>
>> You might consider replacing the cancel button with a cancel link (i.e. an anchor with 'cancel'). That probably will give you the behavior you are looking for.
>> I'm never using a cancel button because we do it with links throughout the application.
>    Yes, that is it! It works after I changed the 'html cancelButton' to 'html anchor'. Thanks, I never would have gotten that on my own.
>
>    I am a little confused about whether I nest html forms or not. I have so many different components with html form in them that I must be nesting forms. So, there should only one html form: for the entire page? Perhaps I can refactor my code to make that happen, although everything seems to work pretty well as it is written. What goes wrong when forms are nested?
>
>    Regards,
>
>    Larry
>
>
>
>>
>>
>> On 06 Apr 2012, at 12:48, Lawrence Kellogg wrote:
>>
>>> Johan,
>>>   Unfortunately, changing it from value: to with: does not make any difference, the bug is still there. I looked through my code and it looks like I am calling html form: for all the resources I am rendering, as far as I can tell.
>>>
>>>   Does this snippet of code provide any clue?
>>> ….
>>> <form accept-charset="utf-8" method="post" action="/PracticeJournalLoginTask?_s=MQjCWJGC8kOo0deT&amp;_k=ZS373GZpYr33sacc"><br/>
>>> <input class="btn submit" name="12" value="Back" type="submit"/>
>>> <br/><br/><br/>
>>> <form accept-charset="utf-8" method="post" action="/PracticeJournalLoginTask?_s=MQjCWJGC8kOo0deT&amp;_k=ZS373GZpYr33sacc"><object>
>>> <param name="width" value="586"></param>
>>> <param name="height" value="355"></param>
>>> <param name="movie" value="http://www.youtube.com/v/PIlDmg2iFgA?fs=1&amp;hl=es&amp;rel=0&amp;cc_load_policy=1&amp;cc_lang_pref=es&amp;version=3"></param><param name="cc_load_policy" value="1"></param>
>>> <param name="allowFullScreen" value="false"></param><param name="allowScriptAccess" value="always"></param>
>>> <embed src="http://www.youtube.com/v/PIlDmg2iFgA?fs=1&amp;hl=es&amp;rel=0&amp;cc_load_policy=1&amp;cc_lang_pref=es&amp;version=3" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="false" width="586" height="355"></embed></object><br/></form><br/>
>>>
>>> <input class="btn submit" name="13" value="Back" type="submit"/><br/></form></div></div><div class="wa-toolbar"></div>
>>>
>>> <script type="text/javascript">/*<![CDATA[*/function onLoad(){};/*]]>*/</script></body></html>
>>>
>>> Regards,
>>>
>>> Larry
>>> www.practicemusic.com
>>>
>>> On Apr 6, 2012, at 6:35 AM, Johan Brichau wrote:
>>>
>>>> It's a guess but did you try replacing
>>>>
>>>> 	value: 'Back'
>>>>
>>>> with
>>>>
>>>> 	with: 'Back'
>>>>
>>>> ?
>>>>
>>>> Otherwise, a snippet of the 'weird rendering' might help
>>>>
>>>> Johan
>>>>
>>>> On 05 Apr 2012, at 23:10, Lawrence Kellogg wrote:
>>>>
>>>>> Hello,
>>>>> I noticed a weird issue with rendering the Back button. If I have
>>>>>
>>>>> renderBackButtonOn: html
>>>>> 	html break.
>>>>> 	html cancelButton
>>>>> 		class: 'btn';
>>>>> 		callback: [ self back ];
>>>>> 		value: 'Back'.
>>>>> 	html break
>>>>>
>>>>> and this:
>>>>>
>>>>> back
>>>>> 	self answer: false
>>>>>
>>>>> and then this:
>>>>>
>>>>> 	html
>>>>> 		form: [
>>>>> 			self renderBackButtonOn: html.
>>>>>
>>>>> 			self resources do: [: each | html render: each].
>>>>> 			
>>>>> 			self renderBackButtonOn: html].
>>>>> 		
>>>>>
>>>>> I often see the case where the first rendering of the Back button works correctly, but the last render does not work. I press the button and nothing happens. Any idea what is going on here?
>>>>>
>>>>> Regards,
>>>>>
>>>>> Larry Kellogg
>>>>> www.practicemusic.com
>>>>> _______________________________________________
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