Question

我有这个表单，当用户输入内容时，会将其作为finalAnswer提交，如下所示：

        <g:form controller="animais" params="['rootNode': rootNode, 'finalAnswer': finalAnswer]">   
            <h3>${curQuestion} </h3>            

            <g:if test="${finished}">           
                <g:actionSubmit class="btn btn-primary" action="backToStart" value="Voltar" />
            </g:if>         
            <g:if test="${!finished}">
                <g:if test="${!showDivTip}">            
                    <g:textField name="finalAnswer" value="${finalAnswer}"/>
                    <g:actionSubmit class="btn btn-primary" action="submitFinalAnswer" value="OK" />                    
                </g:if>                             
                <g:if test="${showDivTip}">         
                    <g:textField name="tipToFinalAnswer" value="${tipText}"/>                   
                    <g:actionSubmit class="btn btn-primary" action="submitTipForAnswer" value="Finalizar" />                        
                </g:if>
            </g:if>
        </g:form>

问题是finalAnswer作为2个字符串数组来到params，即使内容是一个简单的字符串。

当我打印params时：

[finalAnswer:[, leao marinho], rootNode:2, _action_submitFinalAnswer:OK, action:index, format:null, controller:animais]

params.finalAnswer的价值：[, leao marinho]

params.finalAnswer的ClassType：class [Ljava.lang.String;

如何将params.finalAnswer检索为简单字符串？

Answer 1

试试这个

    <g:form controller="animais" params="['rootNode': rootNode]">   
        <h3>${curQuestion} </h3>            

        <g:if test="${finished}">           
            <g:actionSubmit class="btn btn-primary" action="backToStart" value="Voltar" />
        </g:if>         
        <g:if test="${!finished}">
            <g:if test="${!showDivTip}">            
                <g:textField name="finalAnswer" value="${params.finalAnswer}"/>
                <g:actionSubmit class="btn btn-primary" action="submitFinalAnswer" value="OK" />                    
            </g:if>                             
            <g:if test="${showDivTip}">         
                <g:textField name="tipToFinalAnswer" value="${params.tipText}"/>                   
                <g:actionSubmit class="btn btn-primary" action="submitTipForAnswer" value="Finalizar" />                        
            </g:if>
        </g:if>
    </g:form>

Answer 2

@quindimildev回答不完全正确。更好的是使用隐藏字段：

public class LocationController : MasterController
{
    private ROCKWELLTESTEntities db = new ROCKWELLTESTEntities();
    //
    // GET: /Master/Location/

    public ActionResult LocationIndex(string text)
    {
        if (TempData["msg"] != null)
        {
            ViewData["error"] = TempData["msg"];
            text = null;
        }
        IEnumerable<location_master> locms;
        if (text == null)
        {
            locms = db.location_master.ToList().Where(l => l.LOC_DEL.Equals(0));
        }
        else
        {
            locms = db.location_master.ToList().Where(l => l.LOC_DEL.Equals(0) && l.LOC_NAME.Contains(text));
        }
        return View(locms);
    }        

    public ActionResult Edit(int id)
    {
        location_master locms = db.location_master.Find(id);
        return PartialView(locms); 
    }

    [HttpPost]
    [ValidateAntiForgeryToken]
    public ActionResult Edit(location_master locms)
    {
        return editProcessDialog(locms, "Location Updated");
    }

    ActionResult editProcessDialog(location_master locms, string message)
    {
        if (ModelState.IsValid)
        {

            if (locms != null)
            {
                db.Entry(locms).State = EntityState.Modified;
                db.SaveChanges();
                ControllerContext.HttpContext.Response.Write(string.Format("<div data-dialog-close='true' data-dialog-result='{0}'/>", message));
                return PartialView("Edit");                      
            }
            else
            {
                ModelState.AddModelError("", string.Format("Location Not Exist"));
            }
        }
        return PartialView(locms);
    }

}

所以你可以从params中删除它。真的，它更清楚。

Grails表单提交生成空白条目“params”

2 个答案: