CODEWITHSUNDEEP
formsspring-mvc
zaxx
zaxx

Reputation: 285

Spring MVC form:select selected value?

Is there any way to select current value in dropdown list by Spring MVC by <form:options>?

Upvotes: 14

Views: 69352

Answers (7)

Shams
Shams

Reputation: 565

Need to set both these attributes itemLabel and itemValue to preselect the value eg: <form:options items="${subCategoryList}" itemLabel="name" itemValue="id"/> The name and ids are the fields from the SubCategory object and subCategoryList is List<Subcategory>

Upvotes: 0

Fagbola Sodiq Damilola
Fagbola Sodiq Damilola

Reputation: 31

I had similar problem and after several days of battling with it, I was able to fix it by implementing hash and equal methods in my model class. The problem is that spring was not able to determine where an item in the drop down is equals to a value in the model. But after implementing the hash and equals in the model object, everything worked fine.

@Entity
@Table(name = "BANKS")
public class Bank implements java.io.Serializable {

/**
 * 
 */
private static final long serialVersionUID = -8928809572705999915L;

private Long id;

private String bankCode;

private String bankName;

...........

@Override
public int hashCode() {
    final int prime = 31;
    int result = 1;
    result = prime * result
            + ((bankCode == null) ? 0 : bankCode.hashCode());
    result = prime * result
            + ((bankName == null) ? 0 : bankName.hashCode());
    result = prime * result + ((id == null) ? 0 : id.hashCode());
    return result;
}

@Override
public boolean equals(Object obj) {
    if (this == obj)
        return true;
    if (obj == null)
        return false;
    if (getClass() != obj.getClass())
        return false;
    Bank other = (Bank) obj;
    if (bankCode == null) {
        if (other.bankCode != null)
            return false;
    } else if (!bankCode.equals(other.bankCode))
        return false;
    if (bankName == null) {
        if (other.bankName != null)
            return false;
    } else if (!bankName.equals(other.bankName))
        return false;
    if (id == null) {
        if (other.id != null)
            return false;
    } else if (!id.equals(other.id))
        return false;
    return true;
}

And in the view i have something like this 

    <form:select path="bank" cssClass="form-control"    required="true">
        <form:option value="">--Select--</form:option>
        <form:options items="${banks}" itemLabel="bankName"
                                        itemValue="bankCode" />
    </form:select>

Upvotes: 2

Timeless
Timeless

Reputation: 7537

No need to use if else

Example:

Student student = new Student();
student.gender = "F";
model.addObject("student", student);

Map<String, String> genders = new LinkedHashMap<String, String>();
genders.put("M", "Male");
genders.put("F", "Female");
model.addObject("genders", genders);

JSP Code

modelAttribute & commandName are interchangeable

<c:url value="/Student/Edit" var="editstudenturl"/>
<form:form method="post" action="${editstudenturl}" modelAttribute="student" class="form-horizontal">
  <form:select path="gender" class="form-control" id="gender" >
    <form:options items="${genders}" />
  </form:select>
</form:form>

Upvotes: 7

gjman2
gjman2

Reputation: 920

Try this, it works for me

<form:select path="size">
    <c:forEach items="${sizeList}" var="s" varStatus="status">
        <c:choose>
            <c:when test="${s eq 25}">
                <option value="${s}" selected="true">${s}</option>
            </c:when>
            <c:otherwise>
                <option value="${s}">${s}</option>
            </c:otherwise>
        </c:choose> 
    </c:forEach>
</form:select>

Upvotes: 3

Paddy Mallam
Paddy Mallam

Reputation: 243

prior to binding the form to the model, you should set whatever variable you want to be selected to the desired value in the controller of your jsp.

    Form form = new Form();
    form.setFoo("bar");
    model.addAttribute("form", form);

When the form is built in the jsp, that form variable will be the default selected value in your options list.

Upvotes: 0

Kristo Aun
Kristo Aun

Reputation: 524

Here's my fix to this problem. Its massive, but it works

genders: qualifier from java model 

// model.addAttribute("genders", genders);

account: binded modelattribute for spring forms

fmt:message: translates m to "Mees" (Estonian)

<form:select path="cfGender">
<c:forEach var="item" items="${genders}">
    <c:choose>
        <c:when test="${account.getCfGender().getCfGender()==item.getCfGender()}">
            <form:option selected="true" value="${item.getCfGender()}">
                <fmt:message key="cf_gender.${item.getCfGender()}" />
            </form:option>
        </c:when>

        <c:otherwise>
            <form:option value="${item.getCfGender()}">
                <fmt:message key="cf_gender.${item.getCfGender()}" />
            </form:option>
        </c:otherwise>
    </c:choose>
</c:forEach>
</form:select>

Upvotes: 6

Peter Szanto
Peter Szanto

Reputation: 7722

Sets 'selected' as appropriate based on bound value.

http://static.springsource.org/spring/docs/2.0.x/reference/spring-form.tld.html#spring-form.tld.options

Upvotes: 6

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