Doubleselect Tag (Form Tag) Example

In this section, we are going to describe the doubleselect tag. The doubleselect tag is a UI tag that renders two HTML select elements with second one changing displayed values depending on selected entry of first one.

Add the following code snippet into the struts.xml file.
struts.xml

<action name="doubleselectTag">
<result>/pages/uiTags/doubleselectTag.jsp</result>
</action>

Create a jsp using the tag <s:doubleselect>that renders two HTML select elements with second one changing displayed values depending on selected entry of first one. This tag contains various parameters:

The headerKey parameter sets the header key of the second list. Must not be empty. In our case we have set it to"1" The headerValue parameter sets the header value of the second list. In our case we have set it to "--- Please Select ---"The doubleName parameter sets the name for complete component. In our case we have set it as : doubleName="dishes"
The doubleList sets the second iterable source to populate from. In our case we have set it as : doubleList="top == 'Color' ? {'Black','Green','White', 'Yellow','Red','Pink'} : { 'Apple','Banana','Grapes','Mango'}"

doubleselectTag.jsp


<%@ taglib prefix="s" uri="/struts-tags" %>



<html>

  <head>

    <title>Doubleselect Tag Example!</title>

  </head>

  <body>

  <h1><span style="background-color: #FFFFcc">Doubleselect Tag Example!</span></h1>

  <s:form>

  <s:doubleselect label="Select Item"  

          headerValue="--- Please Select ---"

          headerKey="1" list="{'Color','Fruits'}" 

          doubleName="dishes" 

          doubleList="top == 'Color' ? {'Black','Green','White',

          'Yellow','Red','Pink'} : { 'Apple','Banana','Grapes','Mango'}" />

    </s:form>

  </body>

</html>

Output of the doubleselectTag.jsp:

Current Comments

9 comments so far (post your own) View All Comments Latest 10 Comments:

I want to use Struts2 DoubleSelect Tag for populating List of countries and on selecting a country, its available cities should be populated. Can anybody give sugesstions and any practicle code for such scenario.
Thanks
Naresh Sahu

Posted by Naresh Sahu on Monday, 06.9.08 @ 10:50am | #62682

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how to use this tag with a sample with databse and struts2 actions.

Posted by sunil on Wednesday, 06.4.08 @ 09:53am | #62040

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Hi,
If you provide example like , list of country and their city.
will help us to understand better.

Posted by shambhu on Friday, 05.23.08 @ 09:52am | #60728

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sir
If it possible morethan two elemnts in fisrt combo and change depending on second combo value

Posted by Rakesh on Saturday, 03.29.08 @ 13:04pm | #54650

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Thanks Sathish, That was really helpful!!

Posted by Rushikesh on Wednesday, 02.27.08 @ 18:37pm | #50312

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execute ur query.
then fetch the result into hash and keep it in list.

for ex.,
Execute Query :
SELECT COL1, COL2 FROM TBL;

create hash:
HashMap<String, String> resultMap =new HashMap();

store the query result into hash (resultMap)
then make select tag:
<HTML:SELECT list="resultMap" />

refer this link from our roseindia
http://www.roseindia.net/struts/struts2/struts2uitags/select-tag.shtml

if any problem, mention where ur facing problem.

Posted by sathish kumar on Monday, 02.25.08 @ 23:52pm | #50031

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and also, try this url....
hope it helps you...

Posted by sathish on Saturday, 02.23.08 @ 23:51pm | #49692

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get the data and store it into array....
and then initialize it...
reply in case of doubt...