Tree Table - Setting children on react.js

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Tree Table - Setting children on react.js



I'm trying to build a Tree Table that is capable of shown/hide their TR childs when clicked (among other things).



I've grab some code from the web to generate easily generate a tree structure. The problem comes trying to set a parent/child relationship with this event. I'm really not used to react so it is hard for me to understand certain things.



This is the data structure:


var data = [

id: 1,
label: 'Order 1',
deep: 0,
children: [
id: 11,
label: 'Cycle November',
deep: 1,
,

id: 12,
label: 'Cycle December',
deep: 1,
]
,

id: 2,
label: 'Order 2',
deep: 0,
children: [
id: 21,
label: 'Cycle January',
deep: 1
]
,
];



Then i want to click on Parent id 1 and see who their children are.



This is the code that draws the Table:


var TR = React.createClass(
childs: ,
hasParent: function()
if (this.props.parent)
return true;

else
return false;

,
componentDidMount: function()
if (this.hasParent())
parentKey = this.props.parent.props.keyId.split('-')[1];
thisKey = this.props.keyId.split('-')[0];
if (parentKey == thisKey)
console.log('I set the child');
this.props.parent.props.childs.push(this);


,
handleClick: function(event)
if (this.hasParent())
parent = this.props.parent;
console.log('My father is: '+parent.props.keyId);
console.log('Me and my brothers are: ');
parent.props.childs.map(function(child)
console.log(child.props.keyId);
);

else
console.log('I am: '+this.props.keyId);
console.log('My children are:');
this.props.childs.map(function(child)
console.log(child.props.keyId);
);

,
isShown: function()
return false;
,
getDefaultProps: function()
return
childs: new Array(),
;
,
render: function()
var iparent = this.props.data.deep*20;

return (
<tr>
<td style=paddingLeft: iparent+'px'>
<span onClick=this.handleClick >
&nbsp; + </span>
this.props.data.label
</td>
</tr>
);

);

var Tree = React.createClass(
render: function()
var treeItems = ;
parent = null;
var renderTreeItems = function(items, parent)
if (!items)
return;

for (var i = 0; i < items.length; i++)
if (items[i].deep == 0)
var parent_id = items[i].deep;

else
var parent_id = parent.props.data.id;

var key = parent_id+'-'+items[i].id;

tr = (
<TR key=key keyId=key data=items[i] parent=parent >
</TR>
);
treeItems.push(
tr
);
renderTreeItems(items[i].children, tr);

;
renderTreeItems(this.props.data);
return (
<table>
treeItems
</table>
);

);



And last the HTML to attach the component:


<html>
<body>
<div id="tree"></div>
<script type="text/jsx">
React.render(<Tree data=data/>, document.body);
</script>
</body>
</html>



The actual problem is that childs (badly written i know...) seems to be shared between all TR instances.
Can someone point what i'm doing wrong and what is the best approach to deal with this?
Simply: i want to hide/show childs clicking on the TR-First TD that "acts" as a parent.



Here is the jsfiddle http://jsfiddle.net/69z2wepo/2731/




1 Answer
1



I approached the problem from a new perspective using a parent_key on every TR and querying against all the array in search of those objects that have that parent_key, changing it's properties. Now I have the start of a fully functional table tree.


parent_key


parent_key


//Won't work below IE9, but totally safe otherwise
!function()
function _dynamicSortMultiple(attr)
/*
* save the arguments object as it will be overwritten
* note that arguments object is an array-like object
* consisting of the names of the properties to sort by
*/
var props = arguments;
return function (obj1, obj2)
var i = 0, result = 0, numberOfProperties = props.length;
/* try getting a different result from 0 (equal)
* as long as we have extra properties to compare
*/
while(result === 0 && i < numberOfProperties)
result = _dynamicSort(props[i])(obj1, obj2);
i++;

return result;
;

function _dynamicSort(property)
var sortOrder = 1;
if(property[0] === "-")
sortOrder = -1;
property = property.substr(1);

return function (a,b)
var result = (a[property] < b[property]) ? -1 : (a[property] > b[property]) ? 1 : 0;
return result * sortOrder;


Object.defineProperty(Array.prototype, "sortBy",
enumerable: false,
writable: true,
value: function()
return this.sort(_dynamicSortMultiple.apply(null, arguments));

);
();

var TD = React.createClass(
onHandleClick: function(event)
this.props.onHandleClick(this.props.data.key);
,
render: function()
var iparent = this.props.data.deep*20;
var icon = "fa-chevron-down";

return (
<td style=paddingLeft: iparent+'px'>
<span onClick=this.onHandleClick className="fa "+icon>
&nbsp;</span>
this.props.data.label
</td>
);

)

var TR = React.createClass(
onHandleClick: function(TD)
this.props.onHandleClick(TD);
,
render: function()
if (this.props.data.isShown)
return (
<tr>
<TD data=this.props.data onHandleClick=this.onHandleClick/>
</tr>
);

else
return (
<tr>
</tr>
);


);

var List = React.createClass(
render: function()
var self = this;
var trs = this.props.data.map(function(row)
var key = row.deep+'-'+row.id;
return (<TR key=key keyId=key parentKey=row.parent_key data=row onHandleClick=self.props.onHandleClick />);
);

return (
<table>
trs
</table>
);

);

var Tree = React.createClass(
handleClick: function(key)
newState = this.state.data.slice();
for (var i = newState.length - 1; i >= 0; i--)
var item = newState[i];
if (item.parent_key == key)
item.isShown = (item.isShown)?false:true;
newState[i] = item;

;
this.setState(data: newState);
,
loadFromServer: function()
var data = [

id: 1,
label: 'Order 1',
deep: 0,
key: '0-1',
parent_key: '0',
,

id: 11,
label: 'Cycle November',
deep: 1,
key: '0-1-11',
parent_key: '0-1',
,

id: 12,
label: 'Cycle December',
deep: 1,
key: '0-1-12',
parent_key: '0-1',
,

id: 2,
label: 'Order 2',
deep: 0,
key: '0-2',
parent_key: '0'
,

id: 21,
label: 'Cycle January',
deep: 1,
key: '0-2-21',
parent_key: '0-2',

];
newState = ;
data.map(function(item)
item.isShown = (item.deep != 0)?false:true;
newState.push(item);
);
newState.sortBy("key");
this.setState(data:newState);
,
getInitialState: function()
return data: ;
,
componentDidMount: function()
this.loadFromServer();
,
render: function()
return (
<div className="Box">
<table className="table table-striped table-hover dataTables-orders" >
<thead>
</thead>
<List data=this.state.data onHandleClick=this.handleClick />
</table>
</div>
);

);
React.render(<Tree data=data/>, document.getElementById('tree'));





Thank you, it is really helpful!
– Alexander Temerev
May 26 '15 at 11:12






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