Here is an example in JSP to bind a collection as checkboxes with spring form:checkbox.
<c:forEach varStatus="status" var="product" items="${command.products}">
<form:checkbox path="products[${status.index}].productId" value="${product.id}" />
</c:foreach>
Note the command will always have the collection "products". However, the selected ones - the ones with checkbox checked, will have valid "id" values. This is the way to tell which ones are selected.
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Thanks
ReplyDeleteFor me I had to override equals and hashCode methods too.
@Override
public int hashCode() {
return new Long(productId).hashCode()*description.hashCode();
}
@Override
public boolean equals(Object obj) {
// TODO Auto-generated method stub
if (obj == null) {
return false;
}
if (! (obj instanceof Product)) {
return false;
}
return this.productId==((Product)obj).getproductId();
}