jqgrid 中是否有用于添加高级过滤器以发布数据的 api？

Question

我看到在这段代码中，你可以通过在你的 javascript 中设置 postdata 过滤器。

postData: {
   filters:'{"groupOp":"AND","rules":['+
    '{"field":"invdate","op":"gt","data":"2007-09-06"},'+
    '{"field":"invdate","op":"lt","data":"2007-10-04"},'+
    '{"field":"name","op":"bw","data":"test"}]}'
}

是否有任何 API 可以让您构建它。比如：

jqgrid("#grid").addPostDataFilters("AND");
jqgrid("#grid").addFilteritem("field", "cn", "value");
jqgrid("#grid").addFilteritem("field1", "eq", "value2");

帮助生成到顶部的 postdata 过滤器代码??

我试过了，但它似乎不起作用：

.jqGrid("setGridParam", { editurl: "/Project/UpdateMe",
         ondblClickRow: function (rowid) {
             editProject(rowid); // window.location.href="/Project/Detail/"+rowid;
         }
});

var grid = $("#grid");
var f = { groupOp: "AND", rules: [] };
f.rules.push({ field: "Name", op: "cn", data: "volat" });
grid.p.search = f.rules.length > 0;
$.extend(grid.p.postData, { filters: JSON.stringify(f) });

更新：

我现在有这个工作（感谢 Oleg）但如果由于某种原因“查找”按钮出现空白（即使我确实设置了高级过滤器）我添加了一张图片

Answer 1

过滤器

filters:'{"groupOp":"AND","rules":[{"field":"invdate","op":"gt","data":"2007-09-06"},{"field":"invdate","op":"lt","data":"2007-10-04"},{"field":"name","op":"bw","data":"test"}]}'

您在问题中包含的内容被序列化为对象的 JSON 版本

var myfilter = {
    groupOp: "AND",
    rules: [
        { field: "invdate", op: "gt", data: "2007-09-06" },
        { field: "invdate", op: "lt", data: "2007-10-04" },
        { field: "name",    op: "bw", data: "test"       }
    ]
}

可以很容易地动态构造：

// addPostDataFilters("AND");
var myfilter = { groupOp: "AND", rules: []};

// addFilteritem("invdate", "gt", "2007-09-06");
myfilter.rules.push({field:"invdate",op:"gt",data:"2007-09-06"});

// addFilteritem("invdate", "lt", "2007-10-04");
myfilter.rules.push({field:"invdate",op:"lt",data:"2007-10-04"});

// addFilteritem("name", "bw", "test");
myfilter.rules.push({field:"name",op:"bw",data:"test"});

// generate to top postdata filter code
var grid = $("#list");
grid.jqGrid({
    // all prarameters which you need
    search:true, // if you want to force the searching
    postData: { filters: JSON.stringify(myfilter)}
});

如果网格已经存在，您想使用可以使用的设置重新加载网格

grid[0].p.search = myfilter.rules.length>0;
$.extend(grid[0].p.postData,{filters:JSON.stringify(myfilter)});
grid.trigger("reloadGrid",[{page:1}]);

相反。大多数网络浏览器都原生支持JSON.stringify 函数，但可以肯定的是 你应该在你的页面上包含json2.js。