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Using the select tag

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Olivier Auverlot

Using the select tag

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 :

<select name="3"><option value="ML"selected="selected">Male</option><option value="FML">Female</option></select>

Thanks for your help.

Best regards
Olivier ;-)

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Philippe Marschall

Re: Using the select tag

2011/9/29 Olivier Auverlot <[hidden email]>:

> 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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davidbuck

Re: Using the select tag

In reply to this post by Olivier Auverlot

Try this and let me know if it works for you.

html select
with: [
html option
value: 'ML';
with: 'Male'.
html option
value: 'FML';
with: 'Female'].

David Buck

Olivier Auverlot wrote:

> 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 :
>
> <select name="3"><option
> value="ML"selected="selected">Male</option><option
> value="FML">Female</option></select>
>
>
> Thanks for your help.
>
> Best regards
> Olivier ;-)
>
> _______________________________________________
> seaside mailing list
> [hidden email]
> http://lists.squeakfoundation.org/cgi-bin/mailman/listinfo/seaside
>
>
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>

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Philippe Marschall

Re: Using the select tag

2011/9/29 David Buck <[hidden email]>:

> Try this and let me know if it works for you.
>
> html select
> with: [
> html option
> value: 'ML';
> with: 'Male'.
> html option
> value: 'FML';
> with: 'Female'].

That should break #callback:

Cheers
Philippe

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Olivier Auverlot

Re: Using the select tag

In reply to this post by Philippe Marschall

Hi Philippe,

It's possible that I want work with a too old method for Seaside. I made
many cgi in my programmer life ;-)

For me, when I use a select tag, I don't use the value and the caption
to do the same operation. The caption is displayed for the user, the
value is transmitted to the server. It's very distinct to me.

In my case, I have a database table with a foreign key (the value) and a
description (the caption). The key is immutable but the text can change.
It's logical for me that the user selects a caption and that the serveur
receives the key.

Olivier ;-)

> 2011/9/29 Olivier Auverlot<[hidden email]>:
>> 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
> _______________________________________________
> seaside mailing list
> [hidden email]
> http://lists.squeakfoundation.org/cgi-bin/mailman/listinfo/seaside

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Olivier Auverlot

Re: Using the select tag

In reply to this post by Philippe Marschall

if I can't set and read the value of an option tag. How can I know the
index of the selected line ?

Olivier ;-)

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Boris Popov, DeepCove Labs (SNN)

RE: Using the select tag

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: [hidden email] [mailto:[hidden email]] 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<[hidden email]>:
>> 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
> _______________________________________________
> seaside mailing list
> [hidden email]
> http://lists.squeakfoundation.org/cgi-bin/mailman/listinfo/seaside

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Olivier Auverlot

Re: 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: [hidden email] [[hidden email]] 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[hidden email]:

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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Boris Popov, DeepCove Labs (SNN)

RE: Using the select tag

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: [hidden email] [mailto:[hidden email]] On Behalf Of Olivier Auverlot
Sent: Thursday, September 29, 2011 9:16 AM
To: Seaside - general discussion
Subject: Re: [Seaside] Using the select tag

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: [hidden email] [[hidden email]] 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[hidden email]:

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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Olivier Auverlot

Re: Using the select tag

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: [hidden email] [[hidden email]] On Behalf Of Olivier Auverlot
Sent: Thursday, September 29, 2011 9:16 AM
To: Seaside - general discussion
Subject: Re: [Seaside] Using the select tag

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: [hidden email] [[hidden email]] 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[hidden email]:

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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Boris Popov, DeepCove Labs (SNN)

RE: Using the select tag

Olivier,

Seaside generates unique values for you to be able to look up an actual object and feed it into the callback, what I’m saying is that you don’t need to worry about those at all – you populate the list with objects, possibly using custom label getters and wait until you get an object fed into your callback.

-Boris

From: [hidden email] [mailto:[hidden email]] On Behalf Of Olivier Auverlot
Sent: Thursday, September 29, 2011 3:10 PM
To: Seaside - general discussion
Subject: Re: [Seaside] Using the select tag

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

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: [hidden email] [[hidden email]] 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[hidden email]:

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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Lukas Renggli

Re: Using the select tag

In reply to this post by Olivier Auverlot

> 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.

Seaside is different by design.

In fact you give Seaside the list of objects you want to display in
the select-box and Seaside tells you which one of these objects was
selected. That's it.

Everything else, like POST URLs, <select> name, <option> values, ...
are automatically generated by Seaside for you. If you let Seaside do
that, things are really easy; if you want to do that yourself, Seaside
might not be the right choice (although you can tell it not to do it
for you).

Lukas

--
Lukas Renggli
www.lukas-renggli.ch
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Bob Arning

Re: Using the select tag

In reply to this post by Olivier Auverlot

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: [hidden email] [[hidden email]] 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: [hidden email] [[hidden email]] 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[hidden email]:
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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sebastianconcept@gmail.co

Re: Using the select tag

In reply to this post by Olivier Auverlot

On Sep 29, 2011, at 10:00 AM, Olivier Auverlot wrote:

if I can't set and read the value of an option tag. How can I know the index of the selected line ?

let seaside do that for you. By far that's the easy way

If you want hackish values in the each <option> you can try non standard attributes or javascript vars in each element

sebastian

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Olivier Auverlot

Re: Using the select tag

In reply to this post by Bob Arning

Hi Bob,

ok ! I understood now. I was stuck in an obsolete model based on strings.

Thank you for the help of the community

Olivier :-)

PS: In the future, I promise to try to not think in Perl, Rebol or PHP...

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: [hidden email] [[hidden email]] 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: [hidden email] [[hidden email]] 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[hidden email]:
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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