[英]Struts2 preselected checkboxlist
I have tried all the sollutions in similar cases that I found, but with no luck. 我在类似的情况下尝试了所有的解决方案,但我没有运气。
My jsp. 我的jsp。
<s:checkboxlist list = "positionsMap"
listKey = "%{key.toString()}"
listValue = "%{value}"
name = "selectedPositions"
value = "positionName"
label = "Position" />
positionsMap
is a Hashmap with key positionId
and value positionName
. positionsMap
是一个具有键positionId
和值positionName
的Hashmap。
selectedPositions
is a list filled with the prechecked positions. selectedPositions
是一个填充了预先检查位置的列表。 Tested with debugger and has the correct value taken from database. 使用调试器进行测试,并从数据库中获取正确的值。
positions
is a list with id and name. positions
是一个包含id和name的列表。 So my question is how can I show prechecked the checkboxes that are stored in selectedPositions
. 所以我的问题是如何显示预先检查存储在
selectedPositions
的复选框。 The result I have is all checkboxes unselected. 我得到的结果是未选中所有复选框。 If something is not clear please ask me.
如果问题不明确请问我。 Thanks in advance!
提前致谢!
More Info from the action: 来自行动的更多信息:
private Object1 object= new Object1();
private List<Position> positionList = new ArrayList<>();
private List<Position> selectedPositions = new ArrayList<Position>();
private String positionName = new String();
private Map<Long,String> positionsMap = new HashMap<Long, String>();
//getters, setters
@Inject
transient ObjectDAO objectDAO;
@Inject
transient PositionDAO positionDAO;
public String edit() {
HttpServletRequest request = (HttpServletRequest) ActionContext.getContext().get(ServletActionContext.HTTP_REQUEST);
object= objectDAO.listById(Long.parseLong(request.getParameter("id")));
positionList = positionDAO.listPositions();
selectedPositions = object.getPositions();
for (int i = 0; i < positionList.size(); i++) {
Position row = (Position) positionList.get(i);
Long id = row.getPositionId();
positionName = row.getPositionName();
positionsMap.put(id, positionName);
}
return SUCCESS;
}
Seen the code, I'd change strategy: use OGNL's List Projection feature to create a List<Long>
from the List<Position>
and then set the key correctly: 看到代码,我改变了策略:使用OGNL的List Projection功能从
List<Position>
创建List<Long>
List<Position>
,然后正确设置密钥:
<s:checkboxlist list = "positionsMap"
name = "selectedPositions"
value = "selectedPositions.{positionId}"
label = "Position" />
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