[转]easyui tree 模仿ztree 使用扁平化加载json
原文地址:http://my.oschina.net/acitiviti/blog/349377
参考文章:http://www.jeasyuicn.com/demo/treeloadfilter.html
一、扩展原因
ztree使用了一种扁平化的数据加载方式,就是id(自身id),pid(父id)的方式,参考http://www.ztree.me/v3/demo.php#_102,于是扩展easyui tree 也使用这种亲民的方式;
二、基本方法
1,载入扩展文件
2,在JS中实例化TREE
三、具体方法(easyui1.4.1下测试可用)
1,载入扩展JS
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//作者孙宇 //自定义loadFilter的实现 $.fn.tree.defaults.loadFilter = function (data, parent) { var opt = $( this ).data().tree.options; var idFiled, textFiled, parentField; if (opt.parentField) { idFiled = opt.idFiled || 'id' ; textFiled = opt.textFiled || 'text' ; parentField = opt.parentField; var i, l, treeData = [], tmpMap = []; for (i = 0, l = data.length; i < l; i++) { tmpMap[data[i][idFiled]] = data[i]; } for (i = 0, l = data.length; i < l; i++) { if (tmpMap[data[i][parentField]] && data[i][idFiled] != data[i][parentField]) { if (!tmpMap[data[i][parentField]][ 'children' ]) tmpMap[data[i][parentField]][ 'children' ] = []; data[i][ 'text' ] = data[i][textFiled]; tmpMap[data[i][parentField]][ 'children' ].push(data[i]); } else { data[i][ 'text' ] = data[i][textFiled]; treeData.push(data[i]); } } return treeData; } return data; }; |
2,实例化
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//实例化。这里增加了三个属性,可以指定idFiled,textFiled和parentField。所以这里的simpleData可以不严格转换成tree的数据格式。 $( function (){ $( '#tt3' ).tree({ checkbox: true , url: 'tree_data_simp.json' , parentField: "pid" , textFiled: "name" , idFiled: "key" }); }); |
json文件:
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[ { "key" : 1, "name" : "Folder1" , "iconCls" : "icon-ok" }, { "key" : 2, "pid" : 1, "name" : "File1" , "checked" : true }, { "key" : 3, "pid" : 1, "name" : "Folder2" , "state" : "open" }, { "key" : 4, "pid" : 3, "name" : "File3" , "attributes" : { "p1" : "value1" , "p2" : "value2" }, "checked" : true , "iconCls" : "icon-reload" }, { "key" : 8, "pid" : 3, "name" : "Async Folder" }, { "key" : 9, "name" : "language" , "state" : "closed" }, { "key" : "j1" , "pid" : 9, "name" : "Java" }, { "key" : "j2" , "pid" : 9, "name" : "C#" } ] |
3,效果: