Question

我正在使用YUI 2.7.0，并且我已经关闭了客户端分页，现在我正在尝试降低服务器端分页（查询可能会返回数千个结果）。现在，没有显示任何结果（我得到“没有找到记录。”消息）。似乎无法在网上找到答案。对alert（）的调用显示正确的数字，因此我知道从服务器返回了一些内容。我怀疑问题是在jobsCallback或handleDataReturnPayload中，但是我从那里停留。任何提示？

  function jobStatusFormatter(elCell, oRecord, oColumn, oData)
  {
    var messages = 
    [
    <c:forEach var="x" begin="0" end="17">
      "<fmt:message key="job.status.${x}"/>",
    </c:forEach>
    ];

    elCell.innerHTML = messages[oData]; 
  }

  var jobColumns = 
  [
    {key:"lotNumber",               label:"<fmt:message key="job.lotNumber"/>",      sortable:true},
    {key:"scheduledStartDate",      label:"<fmt:message key="job.startDate"/>",      sortable:true, formatter:"date"},
    {key:"scheduledCompletionDate", label:"<fmt:message key="job.completionDate"/>", sortable:true, formatter:"date"},
    {key:"itemNumber",              label:"<fmt:message key="job.itemNumber"/>",     sortable:true},
    {key:"statusType",              label:"<fmt:message key="job.statusType"/>",     sortable:true, formatter:jobStatusFormatter},
    {key:"plannerCode",             label:"<fmt:message key="job.plannerCode"/>",    sortable:true},
    {key:"scheduledGroup",          label:"<fmt:message key="job.scheduledGroup"/>", sortable:true},
    {key:"organization",            label:"<fmt:message key="job.organization"/>",   sortable:true}
  ];

  var jobsDataSource = new YAHOO.util.DataSource("<%=request.getContextPath()%>/secure/xml/jobs.do?");
  jobsDataSource.connMethodPost = true;
  jobsDataSource.responseType = YAHOO.util.DataSource.TYPE_XML;
  jobsDataSource.responseSchema = 
  {
    resultNode: "job",
    fields: 
    [
      "id",
      "lotNumber",
      "plannerCode",
      "scheduledGroup",
      "scheduledStartDate",
      "scheduledCompletionDate", 
      "itemNumber",
      "statusType",
      "organization"
    ],
    metaNode: "jobs",
    metaFields:
    {
      totalResultsAvailable : "totalResultsAvailable", 
      totalResultsReturned : "totalResultsReturned" 
    }
  };

  var jobsConfigs = 
  {
    initialLoad: false,
    dynamicData: true,
    paginator: new YAHOO.widget.Paginator(
    { 
      rowsPerPage:15, 
      rowsPerPageOptions : [15,25,50,100]
    })
  };

  var jobsTable = new YAHOO.widget.DataTable("jobsDiv", jobColumns, jobsDataSource, jobsConfigs); 
  jobsTable.subscribe("rowMouseoverEvent", jobsTable.onEventHighlightRow); 
  jobsTable.subscribe("rowMouseoutEvent",  jobsTable.onEventUnhighlightRow); 
  jobsTable.set("selectionMode","single"); 
  jobsTable.subscribe("rowClickEvent", function(args)
  {
    var target = args.target;
    var record = this.getRecord(target);

    window.location="job.do?id="+record.getData("id");
  });            
  jobsTable.handleDataReturnPayload = function(oRequest, oResponse, oPayload) 
  {
    alert("totalResultsAvailable="+oResponse.meta.totalResultsAvailable+", totalResultsReturned="+oResponse.meta.totalResultsReturned);
    oPayload.totalRecords = oResponse.meta.totalResultsAvailable;
    return oPayload;
  };

  var jobsCallback = 
  {
    success : jobsTable.onDataReturnInitializeTable ,
    failure : jobsTable.onDataReturnInitializeTable ,
    scope : jobsTable
  };

  function getQueryParams()
  {
    var form = document.forms[0];
    var lotNumber = form.lotNumber.value;
    var itemNumber = form.itemNumber.value;
    var plannerCode = form.plannerCode.value;
    var scheduledGroup = form.scheduledGroup.value;
    var statusType = form.statusType.value;
    var organization = form.organization.value;

    return "lotNumber="+lotNumber+
           "&itemNumber="+itemNumber+
           "&statusType="+statusType+
           "&plannerCode="+plannerCode+
           "&scheduledGroup="+scheduledGroup+
           "&organization="+organization;
  }

  /* Called when submit button pressed */
  function findJobs()
  {
    // Sends a request to the DataSource for more data
    jobsTable.showTableMessage(YAHOO.widget.DataTable.MSG_LOADING);
    jobsDataSource.sendRequest(getQueryParams(), jobsCallback);
  }

Answer 1

你可能在警报后立即收到错误，但它被吞没了。 FireBug Break on All Errors配置可以确认这一点。机会是oPayload未定义。它由回调对象中的参数属性值设置。

所以你应该能够用

解决这个问题

jobsCallback = {
    success : jobsTable.onDataReturnInitializeTable,
    failure : jobsTable.onDataReturnInitializeTable,
    scope : jobsTable,
    argument : {}
};

或

jobsTable.handleDataReturnPayload = function(oRequest, oResponse, oPayload) {
    oPayload = oPayload || {};
    oPayload.totalRecords = oResponse.meta.totalResultsAvailable;
    return oPayload;
};

HTH

yui和服务器端分页

1 个答案: