RE: Simple dropdown box population

[Jack Haynes <ha...@hotmail.com>]

Hi,
 
I have a list of objects in my action.  Each object in the list represents a Company.  I want to populate 
my dropdown box, in my jsp, with company names.  When a companyName is selected in the dropdown 
box, the companyID (which corresponds to the companyName) will be sent upon form submit.  For 
example, if the user selects "companyA", in the combo box, "1" will be submitted. 
 
companyName-------->companyID
companyA-------------->1
companyB-------------->2
 
Any hints or sample code would be appreciated.  
 
Thanks,
Jack
_________________________________________________________________

Re: Simple dropdown box population

[Al Sutton <al...@alsutton.com>]

or use something like;

Map<String, String> dropdownValues

then do a series of;

dropdownValues.put(companyId, companyName)

and then have

<s:select label="Select Company" name="company" list="dropDownValues" />

If you're not using a object-relation bridge of some kind (e.g. Hibernate), 
it's usually more efficient to get just the IDs and names as opposed to 
fetching all of the object properties just to display the id and name.

If you are using an ORB then it's usually frowned upon to go to the data 
directly, so the List solution makes the most sense.

----- Original Message ----- 
From: "Prashant Khanal" <pr...@yomari.com>
To: "Struts Users Mailing List" <us...@struts.apache.org>
Sent: Thursday, February 14, 2008 4:59 AM
Subject: Re: Simple dropdown box population


> Suppose you declare list of companies as:
> private List<Company> companies = new ArrayList<Company>();
>
> Now you got to have getter for this property as:
>
> public List<Company> getCompanies(){
>   return companies;
> }
>
> You can prepopulate your companies list implementing Preparable interface 
> in
> your action. Upon implementing you will have to override prepare method 
> as:
> public void prepare() throws Exception {
>       companies =//use data access methods or whatever you have to fetch
> the companies
>    }
>
> you can use following tag to display the dropdown box:
> <s:select label="Select Company"
>        name="company" list="companies" listKey="companyId"
>        listValue="companyName"/>
>
> you can fetch the selected company as id declaring a property as the name 
> of
> the dropdown box as:
> private Long company;
> you got to have setter for this property as:
> private void setCompany(Long id){
>   company = id;
> }
>
> so the submitted value will be set in that property.
>
> On 2/14/08, Jack Haynes <ha...@hotmail.com> wrote:
>>
>>
>> Hi,
>>
>> I have a list of objects in my action.  Each object in the list 
>> represents
>> a Company.  I want to populate
>> my dropdown box, in my jsp, with company names.  When a companyName is
>> selected in the dropdown
>> box, the companyID (which corresponds to the companyName) will be sent
>> upon form submit.  For
>> example, if the user selects "companyA", in the combo box, "1" will be
>> submitted.
>>
>> companyName-------->companyID
>> companyA-------------->1
>> companyB-------------->2
>>
>> Any hints or sample code would be appreciated.
>>
>> Thanks,
>> Jack
>> _________________________________________________________________
>>
>>
>
>
> -- 
> Thanks,
> Prashant Khanal
> 


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Re: Simple dropdown box population

[Prashant Khanal <pr...@yomari.com>]

Suppose you declare list of companies as:
private List<Company> companies = new ArrayList<Company>();

Now you got to have getter for this property as:

public List<Company> getCompanies(){
   return companies;
}

You can prepopulate your companies list implementing Preparable interface in
your action. Upon implementing you will have to override prepare method as:
public void prepare() throws Exception {
       companies =//use data access methods or whatever you have to fetch
the companies
    }

you can use following tag to display the dropdown box:
<s:select label="Select Company"
        name="company" list="companies" listKey="companyId"
        listValue="companyName"/>

you can fetch the selected company as id declaring a property as the name of
the dropdown box as:
private Long company;
you got to have setter for this property as:
private void setCompany(Long id){
   company = id;
}

so the submitted value will be set in that property.

On 2/14/08, Jack Haynes <ha...@hotmail.com> wrote:
>
>
> Hi,
>
> I have a list of objects in my action.  Each object in the list represents
> a Company.  I want to populate
> my dropdown box, in my jsp, with company names.  When a companyName is
> selected in the dropdown
> box, the companyID (which corresponds to the companyName) will be sent
> upon form submit.  For
> example, if the user selects "companyA", in the combo box, "1" will be
> submitted.
>
> companyName-------->companyID
> companyA-------------->1
> companyB-------------->2
>
> Any hints or sample code would be appreciated.
>
> Thanks,
> Jack
> _________________________________________________________________
>
>


-- 
Thanks,
Prashant Khanal