[Seaside] Using the select tag

[Bob Arning]

Perhaps it might be clearer to rewrite Boris's example as:


(html select)

     list: self genders;

     selected: self contact gender;

     enabled: [:ea | ea notNil];

     labels: [:ea | ea ifNil: ['---'] ifNotNil: [ea printableVersion]];

     callback: [:value | self contact gender: value].


Where Gender becomes a first-class object rather than some String, 
Character or Integer value.

Cheers,
Bob

On 9/29/11 3:09 PM, Olivier Auverlot wrote:
> Thank Boris but I don't know if your example can resolve my question. 
> The problem is not to produce labels but setting a unique value for 
> each line of the select tag and read this value in my seaside application.
>
> It's possible that we have the same problem with the radio and 
> checkbox tags
>
> In web application, it's a very common practice to dissociate the 
> information displayed for the user and the data exchanged between the 
> client and the server.
>
> http://www.w3schools.com/tags/att_option_value.asp
>
> I used this approach in all my previous web applications with many 
> programming languages (C, Rebol, Perl, PHP, ...). Why not with Pharo 
> and Seaside ? .
>
> In fact in the callback, I think that the server code must not work 
> with the label value but with the value of the tag. It's not the same 
> thing.
>
> Olivier ;-)
>
>
>> Olivier,
>>
>> No, you have a way of separately providing display 'labels' for your 
>> actual objects in the list,
>>
>> (html select)
>>
>> list: self countries;
>>
>> selected: country;
>>
>> enabled: [:ea | ea notNil];
>>
>> labels: [:ea | ea ifNil: ['---'] ifNotNil: [ea name]];
>>
>> callback: [:value | country := value].
>>
>> -Boris
>>
>> *From:*seaside-bounces at lists.squeakfoundation.org 
>> [mailto:seaside-bounces at lists.squeakfoundation.org] *On Behalf Of 
>> *Olivier Auverlot
>> *Sent:* Thursday, September 29, 2011 9:16 AM
>> *To:* Seaside - general discussion
>> *Subject:* Re: [Seaside] Using the select tag
>>
>> Hi Boris,
>>
>> This means that I must analyze the choice of the user from the text 
>> that is displayed on the screen. ok :-(
>>
>> But how can I must doing if my application supports many languages ?
>>
>> Olivier ;-)
>>
>> The framework will pass an actual 'selected' object from your 'list' into the callback, what it puts in the 'value' in the HTML should be completely irrelevant to you.
>>   
>> -Boris
>>   
>>   
>> -----Original Message-----
>> From:seaside-bounces at lists.squeakfoundation.org  <mailto:seaside-bounces at lists.squeakfoundation.org>  [mailto:seaside-bounces at lists.squeakfoundation.org] On Behalf Of Olivier Auverlot
>> Sent: Thursday, September 29, 2011 9:00 AM
>> To: Seaside - general discussion
>> Subject: Re: [Seaside] Using the select tag
>>   
>> if I can't set and read the value of an option tag. How can I know the index of the selected line ?
>>   
>> Olivier ;-)
>>
>>     2011/9/29 Olivier Auverlot<olivier.auverlot at gmail.com>  <mailto:olivier.auverlot at gmail.com>:
>>
>>         Hi,
>>
>>           
>>
>>         I need to use a drop-down menu in a seaside application. In the
>>
>>         examples that I have found, the displayed values are initialized with #list:
>>
>>           
>>
>>         html  select
>>
>>                  list:  #(#Male  #Female);
>>
>>                  selected:  self  contact  gender;
>>
>>                  callback:  [  :value  |
>>
>>                          value  =  #Male
>>
>>                          ifTrue:  [  self  contact  beMale  ]
>>
>>                          ifFalse:  [  self  contact  beFemale  ]  ].
>>
>>           
>>
>>         In the browser, I get this HTML code :
>>
>>           
>>
>>         <select  name="3"><option  value="1"selected="selected">Male</option><option
>>
>>            value="2">Female</option></select>
>>
>>           
>>
>>         My problem is how to set the values for each<option>   tag ? I would
>>
>>         get something like :
>>
>>     Why do you want to do this?
>>
>>       
>>
>>     Cheers
>>
>>     Philippe
>>
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