javascript - In jqgrid, how can I load data by condition? -

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$("#list").jqgrid({         url: "assets/php/usermanager/user-read.php",         datatype: "json",         mtype: "get",         colnames: ["userid", u, "user_group_id"],         colmodel: [             { name: "userid", hidden: true },             { name: "username", width: 270, align: 'center', stype: 'text' },             { name: "user_group_id", hidden: true}         ],         height: "87%",         pager: "#pager",         rownum: 30,         sortname: "userid",         sortorder: "asc",         viewrecords: true,         gridview: true,         autoencode: true,         multiselect: true,         caption: "user list"     });       $(".ui-jqgrid-titlebar").hide();     $("#pager_right").hide();     $("#pager_center").width(220);     $(".ui-pg-input").height(13);      $("#list").navgrid( "#pager", {         search: true,         add: false,         edit: false,         del: false,         refresh:true,         searchoptions: {left: '30%'}     });      $("#search_list").click(function(){         $("#searchmodfbox_list").css( "left", "30%" );     });

this jqgrid i'm using in code, , create buttons. need method or event jqgrid can click button , call method, load data data contain pattern.

for example, have button called "student", when click filter data role field student, grid show me students.

i figured out. after jqgrid loaded, can use set parameter grid , trigger reload refresh grid. has problem parameter 'groupid=1', search or filter won't work properly. fix problem, have set postdata nothing.

$("#list").setgridparam({'postdata' : 'groupid=1'}); $("#list").trigger("reloadgrid"); $("#list").setgridparam({'postdata' : {}});

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