问题
I get following response from database. about array of classes where classes are nested in groups and finally students.
"Response":[
{
"Id":1,"Name":"Class 1","Location":"Building 1","Groups":[
{
"Id":1,"Name":"GB1","Students":[
{
"Id":1,"Name":"Mike","RollNo":"1","Performance":{
"Id":1,"Math":"90","Physics":"70","English":"60"
}
},{
"Id":2,"Name":"John","RollNo":"2","Performance":{
"Id":2,"Math":"90","Physics":"70","English":"60"
}
},{
"Id":3,"Name":"Muffin","RollNo":"3","Performance":{
"Id":3,"Math":"90","Physics":"90","English":"90"
}
}
]
}, {
"Id":2,"Name":"GB2","Students":[
{
"Id":4,"Name":"Ema","RollNo":"1","Performance":{
"Id":4,"Math":"90","Physics":"70","English":"60"
}
},{
"Id":5,"Name":"Sunny","RollNo":"2","Performance":{
"Id":5,"Math":"90","Physics":"70","English":"60"
}
},{
"Id":6,"Name":"Jen","RollNo":"3","Performance":{
"Id":6,"Math":"90","Physics":"90","English":"90"
}
}
]
}
]
},{
"Id":2,"Name":"Class 2","Location":"Building 1","Groups":[
{
"Id":3,"Name":"G1","Students":[
{
"Id":7,"Name":"Ron","RollNo":"1","Performance":{
"Id":7,"Math":"90","Physics":"70","English":"60"
}
},{
"Id":8,"Name":"Kaka","RollNo":"2","Performance":{
"Id":8,"Math":"90","Physics":"70","English":"60"
}
},{
"Id":9,"Name":"Mark","RollNo":"3","Performance":{
"Id":9,"Math":"90","Physics":"90","English":"90"
}
}
]
}, {
"Id":4,"Name":"G2","Students":[
{
"Id":10,"Name":"Lily","RollNo":"1","Performance":{
"Id":10,"Math":"90","Physics":"70","English":"60"
}
},{
"Id":11,"Name":"Lina","RollNo":"2","Performance":{
"Id":11,"Math":"90","Physics":"70","English":"60"
}
},{
"Id":12,"Name":"Linda","RollNo":"3","Performance":{
"Id":12,"Math":"90","Physics":"90","English":"90"
}
}
]
}
]
}
]
Now I want to create a table like this using colspan.
Could anyone help me to do this using ng-repeat and angularjs ? can't figure out how to merge this columns dynamically. So far I managed to do last part using flatten array option.
回答1:
To solve this problem, you will need to ng-repeat inside the <td> instead of <tr>, for most of the time. Other than that, it is just rather tedious work parsing around your object and align them in the manner you want.
Here is the plnkr: http://plnkr.co/edit/aNVrMa4E8gLkVYlxzdHF?p=preview
I am poor at css. Maybe you can do something about that.
回答2:
Although in this solution I had to add add few JavaScript method I still expect to see a better solution and accept as an answer. DEMO
<!DOCTYPE html>
<html ng-app = "demo">
<head>
<script data-require="angular.js@*" data-semver="1.3.0-beta.5" src="https://code.angularjs.org/1.3.0-beta.5/angular.js"></script>
<link rel="stylesheet" href="style.css" />
<script src="script.js"></script>
</head>
<body ng-controller = "demoCtrl">
<h1>Hello Plunker!</h1>
<br>
<table>
<tr>
<td>Class name</td>
<td colspan="{{lengthCount(r)}}" ng-repeat ="r in response" >
{{r.Name}}
</td>
</tr>
<tr>
<td>Group name</td>
<td colspan="{{gr.Students.length}}" ng-repeat ="gr in Groups" >
{{gr.Name}}
</td>
</tr>
<tr>
<td>Student name</td>
<td ng-repeat ="st in Studs" >
{{st.Name}}
</td>
</tr>
<tr>
<td>Maths</td>
<td ng-repeat ="st in Studs" >
{{st.Performance.Math}}
</td>
</tr>
<tr>
<td>Physics</td>
<td ng-repeat ="st in Studs" >
{{st.Performance.Physics}}
</td>
</tr>
<tr>
<td>English</td>
<td ng-repeat ="st in Studs" >
{{st.Performance.English}}
</td>
</tr>
</table>
<br>
</body>
</html>
Code goes here
angular.module("demo",[])
.controller("demoCtrl", ['$scope', function($scope){
$scope.response = response;
function flattenArray(array, fn) {
var output = [];
console.log("<i was flatten here");
for (var i = 0; i < array.length; ++i) {
var result = fn(array[i]);
if (result)
output = output.concat(result);
}
return output;
}
$scope.lengthCount = function(obj) {
var k = 0;
console.log("<i was flatten here");
for (var i = 0; i < obj.Groups.length; ++i) {
k= k+ obj.Groups[i].Students.length;
}
return k;
}
$scope.Groups = flattenArray($scope.response, function (item) {
console.log("<i was here");
return item.Groups;
});
$scope.Studs = flattenArray($scope.Groups, function (item) {
console.log("<i was here");
return item.Students;
});
}]);
var response = [{
"Id":1,"Name":"Class 1","Location":"Building 1","Groups":[
{
"Id":1,"Name":"GB1","Students":[
{
"Id":1,"Name":"Mike","RollNo":"1","Performance":{
"Id":1,"Math":"90","Physics":"70","English":"60"
}
},{
"Id":2,"Name":"John","RollNo":"2","Performance":{
"Id":2,"Math":"90","Physics":"70","English":"60"
}
},{
"Id":3,"Name":"Muffin","RollNo":"3","Performance":{
"Id":3,"Math":"90","Physics":"90","English":"90"
}
}
]
}, {
"Id":2,"Name":"GB2","Students":[
{
"Id":4,"Name":"Ema","RollNo":"1","Performance":{
"Id":4,"Math":"90","Physics":"70","English":"60"
}
},{
"Id":5,"Name":"Sunny","RollNo":"2","Performance":{
"Id":5,"Math":"90","Physics":"70","English":"60"
}
},{
"Id":6,"Name":"Jen","RollNo":"3","Performance":{
"Id":6,"Math":"90","Physics":"90","English":"90"
}
}
]
}
]
},{
"Id":2,"Name":"Class 2","Location":"Building 1","Groups":[
{
"Id":3,"Name":"G1","Students":[
{
"Id":7,"Name":"Ron","RollNo":"1","Performance":{
"Id":7,"Math":"90","Physics":"70","English":"60"
}
},{
"Id":8,"Name":"Kaka","RollNo":"2","Performance":{
"Id":8,"Math":"90","Physics":"70","English":"60"
}
},{
"Id":9,"Name":"Mark","RollNo":"3","Performance":{
"Id":9,"Math":"90","Physics":"90","English":"90"
}
}
]
}, {
"Id":4,"Name":"G2","Students":[
{
"Id":10,"Name":"Lily","RollNo":"1","Performance":{
"Id":10,"Math":"90","Physics":"70","English":"60"
}
},{
"Id":11,"Name":"Lina","RollNo":"2","Performance":{
"Id":11,"Math":"90","Physics":"70","English":"60"
}
},{
"Id":12,"Name":"Linda","RollNo":"3","Performance":{
"Id":12,"Math":"90","Physics":"90","English":"90"
}
}
]
}
]
}
]
来源：https://stackoverflow.com/questions/25380756/angularjs-table-creation-with-ng-repeat