AngularJS 三阶嵌套表结构 [英] AngularJS Third Order Nested Table Structure
本文介绍了AngularJS 三阶嵌套表结构的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
假设我有以下数据结构
{
'Key 1': {
'Value 1': ['a', 'b', 'c'],
'Value 2': ['d', 'e']
},
'Key 2': {
'Value 3': ['f'],
'Value 4': ['g', 'h']
}
}
如何使用 AngularJS 将其呈现在类似于以下的表格中:
How, with AngularJS, can I render it in a table similar to the following:
|-------|---------|---|
| Key 1 | Value 1 | a |
| | |---|
| | | b |
| | |---|
| | | c |
| |---------|---|
| | Value 2 | d |
| | |---|
| | | e |
|-------|---------|---|
| Key 2 | Value 3 | f |
| |---------|---|
| | Value 4 | g |
| | |---|
| | | h |
|-------|---------|---|
键是通过rowspan
完成的.
推荐答案
如果你真的,真的需要用 rowspan
来做这件事,这是一种方法,它非常棘手,几乎不可能阅读/关注,除非您是作者(对此感到抱歉),但它有效.你只需要几个 $filter
s
If you really, really need to do it with rowspan
s this is a way to do it, it's beyond tricky and almost impossible to read/follow unless you are the author (sorry about that), but it works. You just need the support of a couple $filter
s
像这样:
angular.module('testApp', [])
.controller('testController', function ($scope) {
$scope.testData = {
'Key 1': {
'Value 1': ['a', 'b', 'c'],
'Value 2': ['d', 'e']
},
'Key 2': {
'Value 3': ['f'],
'Value 4': ['g', 'h']
}
};
})
.filter('nNestedElements', function(){
var nNestedElements = function(collection, currentLevel, stopLevel){
var total = 0;
if(stopLevel==currentLevel){
if(Object.prototype.toString.call(collection) === '[object Array]')
total += collection.length;
else
total += Object.keys(collection);
}else{
angular.forEach(collection, function(value){
total += nNestedElements(value, currentLevel+1, stopLevel);
});
}
return total;
};
return function(object, level){
return nNestedElements(object, 0, level);
}
})
.filter('objectKeys', function(){
return function(object){
return Object.keys(object);
};
});
查看:
<table ng-app="testApp" ng-controller="testController">
<tr ng-repeat-start="(key, val) in testData">
<td rowspan="{{val|nNestedElements:1}}">{{key}}</td>
<td rowspan="{{val[(val|objectKeys)[0]].length}}">{{(val|objectKeys)[0]}}</td>
<td>{{ val[(val|objectKeys)[0]][0]}}</td>
</tr>
<tr ng-repeat="val2 in val[(val|objectKeys)[0]].slice(1)">
<td>{{val2}}</td>
</tr>
<tr ng-repeat-start="subkey in (val|objectKeys).slice(1)">
<td rowspan="{{val[subkey].length}}">{{subkey}}</td>
<td>{{ val[subkey][0] }}</td>
</tr>
<tr ng-repeat="value3 in val[subkey].slice(1)" ng-repeat-end>
<td>{{ value3 }}</td>
</tr>
<tr ng-repeat-end ng-if="false" ><td></td></tr>
</table>
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