我目前有一个 JQGrid 实现。我第一次运行搜索时,它会很好地填充网格。当我再次单击搜索时,即使我使用相同的条件,网格也会刷新空白,而不是使用返回的数据。有人对为什么会这样有任何想法吗?
这是我的搜索功能:
function searchlibrary(searchInfo){
if(searchInfo == undefined){
searchInfo = null;
}
$("#searchlist").jqGrid({
url:'./searchlibrary',
datatype: 'json',
mtype: 'POST',
postData: searchInfo,
colNames:['Resource Name','Unit', 'Topic','Document Type','Content Type','Select'],
colModel :[
{name:'resourceName', index:'resourceName', width:374, align:'left'},
{name:'unit', index:'unitID', width:40, align:'center',sortable:true,sorttype:'text'},
{name:'topic', index:'topicID', width:220, align:'center',sortable:true},
{name:'docType', index:'docTypeID', width:97, align:'center',sortable:true},
{name:'contentType', index:'contentTypeID', width:97, align:'center',sortable:true},
{name: 'resourceID', width:55, align: "center", sortable: false, editable: true, edittype: "checkbox", editoptions: {value: "Yes:No"}}
],
rowNum:20,
sortname: 'resourceName',
sortorder: 'asc',
viewrecords: true,
gridview: true,
width:878,
height:251
});
$("#searchlist").jqGrid('setLabel','resourceName','',{'text-align':'left','padding-left':'5px'});
}
网格上方有一个项目的下拉列表。当一个项目被选中时,另一个下拉菜单会显示更多内容,或者显示一个文本框。然后,当用户单击提交按钮时,jquery 会获取下拉列表/文本字段的内容并构建一个对象。调用 searchlibrary 函数时,该对象作为 searchInfo 参数传递。然后将其用作 jqgrid 调用中的 postData。我已登录以确保传递的对象始终正确。由于某种原因,第一次调用此函数后的任何内容都会返回一个空白 jqgrid。另外,为了进一步理解为检索信息而调用的 url 是一个生成 json 数据的 php 文件。
更新
这是我对奥列格建议的尝试。我肯定错过了什么。我又开始空白了。这是我现在使用的代码。
$(document).ready(function(){
$("#searchlist").jqGrid({
url:'./searchlibrary',
datatype: 'json',
mtype: 'POST',
postData: {data: function(){var myvar = new Object(); myvar = getSearchData(); console.log(myvar); return myvar;}},
colNames:['Resource Name','Unit', 'Topic','Document Type','Content Type','Select'],
colModel :[
{name:'resourceName', index:'resourceName', width:380, align:'left'},
{name:'unit', index:'unitID', width:40, align:'center',sortable:true,sorttype:'text'},
{name:'topic', index:'topicID', width:220, align:'center',sortable:true},
{name:'docType', index:'docTypeID', width:97, align:'center',sortable:true},
{name:'contentType', index:'contentTypeID', width:97, align:'center',sortable:true},
{name: 'select', width:55, align: "center", sortable: false, editable: true, edittype: "checkbox", formatter:"checkbox", editoptions: {value: "Yes:No"},formatoptions: {disabled : false}}
],
rowNum:20,
sortname: 'resourceName',
sortorder: 'asc',
viewrecords: true,
gridview: true,
width:878,
height:251
});
$("#searchlist").jqGrid('setLabel','resourceName','',{'text-align':'left'});
function getSearchData(){
var searchType = $('select[name="searchtype"]').val();
var searchCriteria = "";
var searchInfo = new Object();
if(searchType=="Unit" || searchType=="Topic" || searchType=="Document Type"){
searchCriteria = $('select[name="searchcontent_select"]').val();
} else if(searchType=="Resource Name" || searchType=="Keyword"){
searchCriteria = $('input[name="searchcontent_text"]').val();
}
searchInfo = {type:searchType, criteria:searchCriteria}
return searchInfo;
}
$('#searchbutton').click(function(ev){
$("#searchlist").trigger('reloadGrid');
});
});
工作解决方案
$(document).ready(function(){
$("#searchlist").jqGrid({
url:'./searchlibrary',
datatype: 'json',
mtype: 'POST',
postData: {type: function(){return $('select[name="searchtype"]').val();},
criteria: function(){return getSearchData();}
},
colNames:['Resource Name','Unit', 'Topic','Document Type','Content Type','Select'],
colModel :[
{name:'resourceName', index:'resourceName', width:380, align:'left'},
{name:'unit', index:'unitID', width:40, align:'center',sortable:true,sorttype:'text'},
{name:'topic', index:'topicID', width:220, align:'center',sortable:true},
{name:'docType', index:'docTypeID', width:97, align:'center',sortable:true},
{name:'contentType', index:'contentTypeID', width:97, align:'center',sortable:true},
{name: 'select', width:55, align: "center", sortable: false, editable: true, edittype: "checkbox", formatter:"checkbox", editoptions: {value: "Yes:No"},formatoptions: {disabled : false}}
],
rowNum:20,
sortname: 'resourceName',
sortorder: 'asc',
viewrecords: true,
gridview: true,
width:878,
height:251
});
$("#searchlist").jqGrid('setLabel','resourceName','',{'text-align':'left'});
function getSearchData(){
var searchType = $('select[name="searchtype"]').val();
var searchCriteria = "";
var searchInfo;
if(searchType=="Unit" || searchType=="Topic" || searchType=="Document Type"){
searchCriteria = $('select[name="searchcontent_select"]').val();
} else if(searchType=="Resource Name" || searchType=="Keyword"){
searchCriteria = $('input[name="searchcontent_text"]').val();
}
searchInfo = {type:searchType, criteria:searchCriteria}
return searchCriteria;
}
$('#searchbutton').click(function(ev){
$("#searchlist").trigger('reloadGrid');
});
});