我正在使用struts2，询问的是单选按钮验证<s:radio>

Question

<s:form action="creatingcv" method="post" onsubmit="return valider()" id="frmSaisie"> 

<s:radio name="cv.gender" label="Gender" list="{'Male','Female'}" id="Gender"/> 

</s:form> 

I used this javascript code but it didn't work

function valider() { 

    frm=document.forms['frmSaisie']; 

    if(frm.elements['Gender'].value != "")  {       
        return true; 
    } 
    else { 
        alert("Please choose your gender"); 
        return false; 
    }
 } 

I tested with other components this javascript code and it worked well but with this one it does nothing.

I also tested frm.elements['Gender'].checked != false but it returns nothing.

Answer 1

For those who still want to use same

This was my radio button

<td><s:radio id="SME_RADIO" label="SME_RADIO" name="SME_RADIO"  list="#{'1':'Passed','2':'Failed'}"  value="smeVO.SME_RADIO"  labelposition="left" labelSeparator=":"/>

and this is how you can do validation,if nothing is selected it comes undefined that's way i kept if condition like that

radioValidation()
{
var nameCHK ="SME_RADIO";
     var selectedRadio = $('input[name='+nameCHK+']:radio:checked').val();
    if( selectedRadio !='1'||selectedRadio !='2' )
       {
         alert( "Please provide Some Radio!" );
         return false;
       }
}

Answer 2

: CRUD of database!! in that case i have to do several classes CreateAction UpdateAction..followed by CreateAction-validation.xml and UpdateAction-validation.xml...but here i faced a problem of objects creation and variables between update and read..the ID that i have to pass from form to form using didnt work.. i have 3 forms one for creating,listing,editing..to pass params from listing to editing...here i got the problems..i create an additional object databaseEdited and i get it from the other form..but the creating of the object is on the class Action that's why i have to work with one Action which contains all CRUD..even if i work with static...still the null java lang exception...

HERE IS MY FORM DATABASE

<s:form  action="createDb" method="POST" onsubmit="return valider()" id="frmSaisie">
<s:if test="dbs.size">
<table border="1px">
    <tr>

        <td>ID</td>
        <td>DataBase</td>


        <td></td>
    </tr>
    <s:iterator value="dbs">
        <tr>

            <td> <s:property value="dbaId"/> </td>
            <td> <s:property value="dba"/></td>

 <td class="tab-td">
<s:url id="update" action="redirect">
<s:param name="databaseEdited.dba" value="dba"/>
<s:param name="databaseEdited.dbaId" value="dbaId"/>
</s:url> 
<s:a href="%{update}">Edit</s:a>
</td >

<td class="tab-td">
<s:url id="delete" action="deletingDb">
<s:param name="databaseDeleted.dbaId" value="dbaId"/>
</s:url>
<s:a href="%{delete}"> Delete</s:a>
</td > 

        </tr>
    </s:iterator>
</table>
</s:if>

My DATABASE EDITING form

<s:form action="updatingDb" method="post" >
    <s:div>
<% as you see i get params from databaseEdited object but the id i ought to put it manually in action class --%>

        <s:textfield label="DataBase" name="databaseEdited.dba" id=DB />
    </s:div>
    <br>
  <s:submit value="Submit" />

     <s:reset key="Cancel"/> 

        </s:form>   

In my action class:

package com.consoft.cv.action;

import java.util.ArrayList;
import java.util.List;



import javax.naming.Context;
import javax.naming.InitialContext;

import com.consoft.cv.entity.*;

import com.consoft.cv.model.*;

import com.opensymphony.xwork2.ActionSupport;

public class DBAction extends ActionSupport {


private static final long serialVersionUID = 1L;
private DBMBLocal DBEjb;
private DB database;
private DB databaseEdited;
private DB databaseDeleted;
private List<DB> dbs;
private static int uid;

public DBAction(){
    try {
        Context context=new InitialContext();
         DBEjb=(DBMBLocal) ( context.lookup("DBMB/local"));


        dbs=new ArrayList<DB>();
    } catch (Exception e) {
        e.printStackTrace();
    }

}

public String findAll() {
    this.dbs=DBEjb.findAll();
    return "success";
}
public String create()
{

    DBEjb.create(database);
    return "success";

}
public String update()
{//the UID got from redirect method
    databaseEdited.setDbaId(uid);

DBEjb.update(databaseEdited);
    return "success";

}
public String delete()
{

    DBEjb.delete(databaseDeleted);
    return "success";

}
public String redirect()
{
    //this is the key cause HERE I CAN KEEP PASS THE ID TO Update method
     **uid=databaseEdited.getDbaId();** 
    return "success";
}

of course there are getters and setters

BECAUSE OF THESE PROBLEMS I COULD NOT WORK WITH STRUTS2 VALIDATION

Answer 3

Think that <s:radio> tag will be replaced with something similar to this:

 <input type="radio" id="Gender" value="Male"/>
 <input type="radio" id="Gender" value="Female"/>

So then, frm.elements['Gender'].value != "" will not work property since there are two elements that matches that. Check each element separately:

function valider() {
  frm=document.forms['frmSaisie'];

  if(frm.elements[0].checked == true || frm.elements[1].checked == true)  {       
    return true;
  }
  else {
    alert("Please choose your gender");
    return false;
  }
}