如何让 jqGrid 重新加载到服务器?

问题描述

我们在 loadonce 设置为 true 的网格上使用 jqGrid 导航器重新加载按钮.

We use the jqGrid navigator reload button on a grid with loadonce set to true.

reload 按钮目前不会返回服务器获取数据 - 我们如何让 reload 去服务器获取最新数据?

The reload button currently does NOT go back to the server to get the data - how can we get the reload to go to the server to get the latest data?

我相信我们可以使用 beforeRefresh 回调将网格 data 设置为 json 而不是 local 但我什至不清楚如何配置 beforeRefresh 方法 - 我不太了解文档.

I believe we can use the beforeRefresh callback to set the grid data to json instead of local but I'm not clear how to even configure the beforeRefresh method - I don't really understand the docs.

推荐答案

你不是唯一有问题的人.我之前回答过同样的问题.要从服务器重新加载网格内容，您应该将 datatype 参数重置为原始值json"或xml"，然后刷新网格.例如

You are not the only person which has the problem. I answerd to the same question before. To reload the grid content from the server you should reset the datatype parameter to original value "json" or "xml" and then refresh the grid. For example

jQuery("#list").jqGrid('setGridParam',{datatype:'json'}).trigger('reloadGrid');

更新:调用 beforeRefresh 事件处理程序，您可以执行以下操作

UPDATED: To call the line inside of beforeRefresh event handler you can do following

jQuery("#list").jqGrid('navGrid','#pager',
  { edit:false,view:false,add:false,del:false,search:false,
    beforeRefresh: function(){
        alert('In beforeRefresh');
        grid.jqGrid('setGridParam',{datatype:'json'}).trigger('reloadGrid');
    }
  });

我从一个老问题修改了一个例子.这里如果您点击刷新按钮，您可以实时查看代码工作.

I modified an example from am old question. Here if you click on the refresh button you can see live how the code work.

更新 2:Free jqGrid 支持一些新选项.reloadGrid 事件支持 fromServer: true 参数，该参数可用于强制从服务器重新加载数据，navGrid 支持 reloadGridOptions 选项可用于指定单击刷新按钮时使用的 reloadGrid 选项.所以上面的代码可以是

UPDATED 2: Free jqGrid supports some new options. reloadGrid event supports fromServer: true parameter which can be used to force reloading of data from the server and navGrid supports reloadGridOptions option which can be used to specify the options of reloadGrid used on click on Refresh button. So the above code could be

$("#list").jqGrid("navGrid", {
    edit: false,
    add: false,
    del: false,
    search: false,
    reloadGridOptions: { fromServer: true }
});

顺便说一句，可以使用 jqGrid 的 navOptions 选项来指定 navGrid 的默认选项(参见 wiki 文章).它允许编写类似的代码

By the way one can use navOptions option of jqGrid to specify default options of navGrid (see the wiki article). It allows to write the code something like

$("#link").jqGrid({
    // all typical jqGrid parameters
    datatype: "json", // or "xml"
    loadonce: true,
    pager: true, // no empty div for page is required
    navOptions: {
        edit: false,
        add: false,
        del: false,
        search: false,
        reloadGridOptions: { fromServer: true }
    }
}).jqGrid("navGrid");

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