Nested rows in Angular Table - html

Question

I have a JSON array like this:
[
{
"students": {
"Student1": {
"number": "15",
"books": {
"Mystery": [
"Book1",
"Book2"
]
}
},
"Student2": {
"number": "12",
"books": {
"Romance": [
"Book1"
],
"Adventure": [
"Book1",
"Book2"
]
}
},
"Student3": {
"number": "116",
"books": {
}
}
},
"class": "7th Grade",
"school": "High School 1"
}
]
I want to display this data as a table on an Angular1 page in the following manner:
How can I make it so that the columns resize with each other, and how can I have nested ng-repeats as needed?
I tried to have nested tables inside the student, student-number, and books columns, and a table within the table in the books column, but the alignment was always off, and I couldn't get a default value of "No Books" to show up if the "books" field was empty.
Here's a Plunkr of what I've tried so far.

Answer 1

One of possible solutions is to combine several tables(based on $scope.base, $scope.students, $scope.books arrays, that calculated in controller) into one virtual, desired table via float:left(to ensure they located in one row). Docking of rows is provided by setting of their style:height, which depends on number of their children. Direct solution will be very complicated due to complicated html markup of table with rowspan attributes. Also I added second item(items.push(items[0])), to demonstrate, that solution works at case of several items.
angular.module('app', [])
.controller('MyController', ['$scope', function($scope) {
var items = [
{
"students": {
"Student1": {
"number": "15",
"books": {
"Mystery": [
"Book1",
"Book2"
]
}
},
"Student2": {
"number": "12",
"books": {
"Romance": [
"Book1"
],
"Adventure": [
"Book1",
"Book2"
]
}
},
"Student3": {
"number": "116",
"books": {
}
},
"class": "7th Grade",
"school": "High School 1"
}
}
];
items.push(items[0]);
$scope.base = [];
$scope.students = [];
$scope.books = [];
for(var item of items){
var temp = $scope.books.length;
for(var student in item.students){
if(['class', 'school'].indexOf(student) == -1){
var studentV = item.students[student];
$scope.students.push({name:student, number: studentV.number, w: Object.keys(studentV.books).length || 1});
for(var book in studentV.books)
$scope.books.push((book + ':' + JSON.stringify(studentV.books[book])).replace(/"/g, ''));
if(Object.keys(studentV.books).length == 0)
$scope.books.push('No books');
}
}
$scope.base.push({cl: item.students.class, school: item.students.school, w: $scope.books.length - temp});
}
}]);
table, th, td {
border: 1px solid black;
border-collapse: collapse;
}
table.left, table.left th, table.left td {
border-right: 0px
}
tr {
text-align:center
}
<script src="//code.angularjs.org/snapshot/angular.min.js"></script>
<div ng-app='app' ng-controller="MyController">
<table style='float:left;border-right:0' class='left'>
<thead>
<tr>
<th>School</th>
<th>Class</th>
</tr>
</thead>
<tbody>
<tr ng-repeat='item in base' style='height:{{item.w*30}}px'>
<td>{{item.school}}</td>
<td>{{item.cl}}</td>
</tr>
</tbody>
</table>
<table style='float:left' class='left'>
<thead>
<tr>
<th>Student</th>
<th>Student-number</th>
</tr>
</thead>
<tbody>
<tr ng-repeat='item in students' style='height:{{item.w*30}}px'>
<td>{{item.name}}</td>
<td>{{item.number}}</td>
</tr>
</tbody>
</table>
<table>
<thead>
<tr>
<th>Books</th>
</tr>
</thead>
<tbody>
<tr ng-repeat='item in books track by $index' style='height:30px'>
<td>{{item}}</td>
</tr>
</tbody>
</table>
</div>

Answer 2

I chose to create hidden nested tables to show more information upon click.