Develop Reference

Html/Angular toggle table rows to show hidden a table

I am completely new to angular, I need to create a table. The data array is as-follows:-
data = [{rollno: 1,name: 'abc',subject: 'maths'},
{rollno: 4,name: 'xyz',subject: 'history'},
{rollno: 2,name: 'pqr',subject: 'history'}
];
I want to create a table with some summary rows based on this data and then when I click the expand button the sub-rows should appear beneath that summary-row indicating the actual data.
For example:-
Expand/Collapse | No of Students | Subject
click here 1 Maths
click here 2 History
When I toggle the expand/collapse button on the second row for example I want actual rows to appear like this beneath it:-
Expand/Collapse | No of Students | Subject
click here 1 Maths
click here 2 History
RollNo | StudentName
4 xyz
2 pqr
How Can I achieve this?

1) Grouping the data by subject
First you need to group the data by subject and then count the items in each group.
You can use the angular.filter module's groupBy filter to do this.
1a) Add a dependency on that module as follows:
var app = angular.module("yourModuleName", ["angular.filter"]);
1b) You can then use the groupBy filter in an ng-repeat directive on a <tbody> tag like this:
<tbody ng-repeat="(key, value) in data | groupBy: 'subject'">
1c) You're now dealing with the data in the format below. This is an object of key/value pairs where "maths" and "history" are both keys, and the arrays are the values
{
"maths": [
{
"rollno": 1,
"name": "abc",
"subject": "maths",
}
],
"history": [
{
"rollno": 4,
"name": "xyz",
"subject": "history",
},
{
"rollno": 2,
"name": "pqr",
"subject": "history",
}
]
}
2) Displaying the grouped data and counting the items in each group
Use key and value to display the grouped data in a table as follows:
<table>
<thead>
<tr>
<th>Subject</th>
<th>Number of Students</th>
<th>Expand/Collapse</th>
</tr>
</thead>
<tbody ng-repeat="(key, value) in data | groupBy: 'subject'">
<tr>
<td>{{ key }}</td>
<td>{{ value.length }}</td>
<td>
<button>
Expand/Collapse
</button>
</td>
</tr>
<tr>
<td colspan="3">
<table>
<thead>
<tr>
<th>Roll Number</th>
<th>Name</th>
</tr>
</thead>
<tbody>
<tr ng-repeat="student in value">
<td>{{ student.rollno }}</td>
<td>{{ student.name }}</td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
Note the extra <tr> and nested table with another ng-repeat for displaying the student data. Currently all nested student data will display, the next step is to conditionally show/hide the nested tables based on which expand/collapse button was clicked.
3) Showing/Hiding the nested student data
3a) Add an ng-click directive on the button so that it passes in the key to an onExpandClicked function on your controller:
<button ng-click="onExpandClicked(key)">
Expand/Collapse
</button>
3b) Create the onExpandClicked function in your controller:
$scope.onExpandClicked = function(name){
$scope.expanded = ($scope.expanded !== name) ? name : "";
}
This sets a value on the $scope that can be used in the view to decide whether to show/hide a section of student data. The key is passed into the function as the name parameter and $scope.expanded will either be set to name or reset to "" depending on whether the passed in name is the same as the current $scope.expanded value or not.
3c) Finally, use the $scope.expanded variable in an ng-if directive on the second <tr> tag of <tbody> to show or hide the nested student data:
<table>
<thead>
<tr>
<!-- Omitted for brevity -->
</tr>
</thead>
<tbody ng-repeat="(key, value) in data | groupBy: 'subject'">
<tr>
<!-- Omitted for brevity -->
</tr>
<tr ng-if="expanded === key">
<!--
Omitted for brevity
-->
</tr>
</tbody>
</table>
Demo
CodePen: How to show/hide grouped data created by the angular.filter module's groupBy filter

Design a table with html and iterate through your data object with ng-repeat loop to display the data.
ngRepeat
W3Schools has some basic examples on how to display tables with AngularJS
Angular Tables

First you should replace the actual table by a div structure, because it is not possible to mix two kinds of table like you are planning (when I get you right).
You could toggle every row with a ng-click with the corresponding expanded content like this (pseudo code, I hope the idea gets clear):
<div class="row-header">
<span>RollNo</span>
<span>StudentName</span>
</div>
<div class="row-content" ng-if="!row_4_expanded" ng-click="row_4_expanded = !row_4_expanded">
<span>4</span>
<span>xyz</span>
</div>
<div ng-if="row_4_expanded">
<div class="row-expanded-header">
<span>No of Students</span>
<span>Subject</span>
</div>
<div class="row-expanded-content">
<span>1</span>
<span>Math</span>
</div>
<div class="row-expanded-content">
<span>2</span>
<span>History</span>
</div>
</div>
<div class="row-content" ng-if="!row_2_expanded" ng-if="row_2_expanded" ng-click="row_2_expanded = !row_2_expanded">
<span>2</span>
<span>pqr</span>
</div>
<div ng-if="row_2_expanded">
<div class="row-expanded-header">
<span>No of Students</span>
<span>Subject</span>
</div>
<div class="row-expanded-content">
<span>1</span>
<span>Math</span>
</div>
<div class="row-expanded-content">
<span>2</span>
<span>History</span>
</div>
</div>
When you now click on a row, it toggle presens with the corresponding expanded one.

Here is a working example which resolves your problem.
var indexCtrl = ['$scope', function($scope){
$scope.num = 0;
$scope.test = [{rollno: 1,name: 'abc',subject: 'maths'},
{rollno: 4,name: 'xyz',subject: 'history'},
{rollno: 2,name: 'pqr',subject: 'history'}
];
$scope.changeShow = function(index){
$scope.num = index;
};
}];
<!DOCTYPE html>
<html ng-app>
<head>
<script src="//ajax.googleapis.com/ajax/libs/angularjs/1.2.26/angular.min.js"></script>
<meta charset="utf-8">
<title>JS Bin</title>
</head>
<body ng-controller='indexCtrl'>
<table>
<tr>
<td>Expand/Collapse</td>
<td>No of Students</td>
<td>Subject</td>
</tr>
<tr ng-repeat='i in test' ng-class="num == $index ? red : none">{{}}
<td ng-click='changeShow($index)'>click here</td>
<td>{{$index +1}}</td>
<td >{{i.subject}}</td>
</tr>
</table>
<table>
<tr>
<td>RollNo</td>
<td>StudentName</td>
</tr>
<tr ng-repeat='i in test'>
<td ng-show='num == $index'>{{i.rollno}}</td>
<td ng-show='num == $index'>{{i.name}}</td>
</tr>
</table>
<style>
table tr td{
border: 1px solid black
}
</style>
</body>
</html>
Hope it helps you.

Can you populate a table with Angular.js without hardcoding column names?

I have a simple Angular.js application that grabs tabular data from a mysql database and shows it in a simple bootstrap table. I’m using this code below to show the table column names without hardcoding them individually…
HTML:
<table class="table">
<thead>
<tr style="background:lightgrey">
<th ng-repeat="column in columns"> {{ column }} </th>
</tr>
</thead>
and in the controller I create ’$scope.columns’ with something like this…
var columnNames = function(dat) {
var columns = Object.keys(dat[0]).filter(function(key) {
if (dat[0].hasOwnProperty(key) && typeof key == 'string') {
return key;
}
});
return columns;
};
DataFactory.getTables(function(data) {
$scope.columns = columnNames(data);
$scope.tables = data;
});
And this works as expected and it’s great, but what about the the rest of the data.. So for example, the body of my table currently looks like this…
HTML:
<tbody>
<tr ng-repeat="x in tables ">
<td> {{ x.id}} </td>
<td> {{ x.name }} </td>
<td> {{ x.email }} </td>
<td> {{ x.company }} </td>
</tbody>
I’ve tried using two loops like this…
HTML:
<tbody>
<tr ng-repeat="x in tables">
<td ng-repeat=“column in columns”> {{ x.column }} </td>
</tr>
</tbody>
But this code doesn’t work, So is it possible to populate a table with angular without hardcoding the column names in HTML, and if so whats the most efficient way to do so?

You might want to try this https://jsfiddle.net/8w2sbs6L/.
<div data-ng-app="APP">
<table ng-controller="myController" border=1>
<thead>
<tr>
<td ng-repeat="column in columns">{{column}}</td>
</tr>
</thead>
<tbody>
<tr ng-repeat="x in tables">
<td ng-repeat="column in columns">{{x[column]}}</td>
</tr>
</tbody>
</table>
</div>
<script>
'use strict';
angular.module('APP', [])
.controller('myController', ['$scope', function($scope){
$scope.tables = [
{
"column1":"row1-column1",
"column2":"row1-column2",
"column3":"row1-column3",
"column4":"row1-column4"
},
{
"column1":"row2-column1",
"column2":"row2-column2",
"column3":"row2-column3",
"column4":"row2-column4"
}
];
$scope.columns = [
"column1",
"column2",
"column3",
"column4"
];
}]);
</script>

How to hide table column if all json value is null for any property using angular js

Plunker sample
How to hide table column if all json value is null for any property
using angular js
index.js
var app = angular.module('plunker', []);
app.controller('MainCtrl', function($scope) {
$scope.name = 'World';
$scope.isArray = angular.isArray;
$scope.data = [{
"Id": null,
"Title": "US",
"Description": "English - United States",
"Values": [{
"Id": 100,
"LanId": 1,
"KeyId": 59,
"Value": "Save"
}]
}, {
"Id": null,
"Title": "MX",
"Description": "test",
"Values": [{
"Id": 100,
"LanId": 1,
"KeyId": 59,
"Value": "Save"
}]
}, {
"Id": null,
"Title": "SE",
"Description": "Swedish - Sweden",
"Values": [{
"Id": 100,
"LanId": 1,
"KeyId": 59,
"Value": "Save"
}]
}]
$scope.cols = Object.keys($scope.data[0]);
$scope.notSorted = function(obj) {
if (!obj) {
return [];
}
return Object.keys(obj);
}
});
index.html
<table border=1 style="margin-top: 0px !important;">
<thead>
<tr>
<th ng-repeat="(k,v) in data[0]">{{k}}</th>
</tr>
</thead>
<tbody>
<tr ng-repeat="item in data">
<td ng-repeat="(prop, value) in item" ng-init="isArr = isArray(value)">
<table ng-if="isArr" border=1>
<thead>
<tr>
<td>
<button ng-click="expanded = !expanded" expand>
<span ng-bind="expanded ? '-' : '+'"></span>
</button>
</td>
</tr>
<tr>
<th ng-repeat="(sh, sv) in value[0]">{{sh}}</th>
</tr>
</thead>
<tbody>
<tr ng-repeat="sub in value" ng-show="expanded">
<td ng-repeat="(sk, sv) in sub">{{sv}}</td>
</tr>
</tbody>
</table>
<span ng-if="!isArr">{{value}}</span>
</td>
</tr>
</tbody>
</table>

You can filter out columns that have only null values with:
JavaScript
$scope.cols = Object.keys($scope.data[0]).filter(function(col) {
return $scope.data.some(function(item) {
return item[col] !== null;
});
});
and check in template if this column should be rendered:
HTML
<table border=1 style="margin-top: 0px !important;">
<thead>
<tr>
<!-- Iterate over non-null columns -->
<th ng-repeat="col in cols">{{col}}</th>
</tr>
</thead>
<tbody>
<tr ng-repeat="item in data">
<!-- Use ngIf to hide redundant column -->
<td ng-if="cols.indexOf(prop)>=0" ng-repeat="(prop, value) in item" ng-init="isArr = isArray(value)" >
...
Plunker
http://plnkr.co/edit/PIbfvX6xvX5eUhYtRBWS?p=preview

So the id is null for every element in the array, then do
<th ng-repeat="(k,v) in data[0]" ng-show="v">{{k}}</th>
and
<td ng-repeat="(prop, value) in item" ng-init="isArr = isArray(value)" ng-show="value">
plnkr: http://plnkr.co/edit/rra778?p=preview

You need to make use of the cols property you defined in your $scope, but you also need to make sure its correct and responsive. You do that like this:
var colsFromData = function(data) {
var activeCols = {};
data.forEach(function(o) {
Object.keys(o).forEach(function(k) {
if(null == o[k])
return;
activeCols[k] = 1;
})
});
return Object.keys(activeCols);
}
$scope.cols = colsFromData($scope.data);
$scope.$watchCollection('data', colsFromData);
Then in your template, to use the now correct cols array:
...
<thead>
<tr>
<th ng-repeat="k in cols">{{k}}</th>
</tr>
</thead>
<tbody>
<tr ng-repeat="item in data">
<td ng-repeat="(prop, value) in item" ng-init="isArr = isArray(value)" ng-if="cols.indexOf(prop) >= 0">
...
And the updated plunker

add multiple rows in one column using angular ng-repeat

I want to generate table contents using json object. I am using ng-repeat to insert multiple rows in a table. But I have to generate table like the following.
--------------
ID | subjects
--------------
| S1
1 | S2
| S3
--------------
| S4
2 | S5
| S6
--------------
my angular code is:
<tr ng-repeat = "user in users">
<td>{{user.id}}</td>
<td>{{user.subject}}</td>
</tr>
my json object is :
user:[
{id:1 ,
subjects:[
{id:1 , name:"eng"}
{id:2 , name:"phy"}
]
},
{id:2 ,
subjects:[
{id:1 , name:"eng"}
{id:3 , name:"math"}
]
}
]
I want to generate html table like this
<table>
<tr>
<td >ID</td>
<td>Sub</td>
</tr>
<tr>
<td rowspan="3">1</td>
<td>S1</td>
</tr>
<tr>
<td>S2</td>
</tr>
<tr>
<td>S3</td>
</tr>
how to insert multiple rows in one column using angular

Use ng-repeat-start and ng-repeat-end. For example:
<tr ng-repeat-start="user in users">
<td rowspan="{{user.subjects.length+1}}">{{user.id}}</td>
</tr>
<tr ng-repeat-end ng-repeat="subject in user.subjects">
<td>S{{subject.id}}</td>
</tr>
Here is a full example:
var app = angular.module('MyApp', []);
app.controller('MyController', function ($scope) {
var users = [{
id: 1,
subjects: [{
id: 1,
name: "eng"
}, {
id: 2,
name: "phy"
}]
}, {
id: 2,
subjects: [{
id: 1,
name: "eng"
}, {
id: 3,
name: "math"
}, {
id: 4,
name: "hist"
},
{
id: 5,
name: "geog"
}]
}];
$scope.users = users;
});
table { border-collapse: collapse; }
td { border: 1px solid Black; }
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<table ng-app="MyApp" ng-controller="MyController">
<thead>
<tr>
<td>ID</td>
<td>Subjects</td>
</tr>
</thead>
<tbody>
<tr ng-repeat-start="user in users">
<td rowspan="{{user.subjects.length+1}}">{{user.id}}</td>
</tr>
<tr ng-repeat-end ng-repeat="subject in user.subjects">
<td>S{{subject.id}}</td>
</tr>
</tbody>
</table>
Also, working fiddle here: http://jsfiddle.net/donal/r51d5fw5/17/
An alternative version, using nested ng-repeat, can be implemented using a div to display the nested subject information:
<tr ng-repeat="user in users">
<td>{{user.id}}</td>
<td>
<div ng-repeat="subject in user.subjects">S{{subject.id}}</div>
</td>
</tr>

rowspan will do everything you need. Follow this link:
w3schools This is one of the best resources for web development.

Using div u can also do
<div ng-repeat = "user in users">
<div> {{user.id}} </div>
<div ng-repeat = "user1 in users.subjects">
{{user1.id}} : {{user1.name}}
<div>
</div>

Donal's answer is good.
But I edited to show beautiful table:
<table class="table table-bordered table-hover table-height m-b-xs">
<thead>
<tr>
<td>ID</td>
<td>Subjects</td>
<td>name</td>
</tr>
</thead>
<tbody>
<tr ng-repeat-start="user in users">
<td rowspan="{{user.subjects.length}}">key {{user.id}}</td>
<td>S{{ user.subjects[0].id }}</td>
<td>{{ user.subjects[0].name }}</td>
</tr>
<tr ng-repeat-end ng-repeat="subject in user.subjects.slice(1)">
<td>S{{subject.id}}</td>
<td>{{subject.name}}</td>
</tr>
</tbody>

Generate html table using angular

I want to generate html table using angular.I have a json object and i used ng-repeat to add multiple rows. But my table structure is different.
I want to generate table structure like this:
<table>
<tr>
<td >ID</td>
<td>Sub</td>
</tr>
<tr>
<td rowspan="3">1</td>
<td>S1</td>
</tr>
<tr>
<td>S2</td>
</tr>
<tr>
<td>S3</td>
</tr>
</table>
--------------
ID | subjects
--------------
| S1
--------
1 | S2
--------
| S3
--------------
| S4
--------
2 | S5
--------
| S6
--------------
user:[
{id:1 ,
subjects:[
{id:1 , name:"eng"}
{id:2 , name:"phy"}
]
},
{ id:2 ,
subjects:[
{id:1 , name:"eng"}
{id:3 , name:"math"}
]
}
]
my angular code is:
<tr ng-repeat = "user in users">
<td>{{user.id}}</td>
<td>{{user.subject}}</td>
</tr>
I want to know how to generate table structure like above

You need to use ng-repeat-start and ng-repeat-end. For example:
var app = angular.module('MyApp', []);
app.controller('MyController', function ($scope) {
var users = [{
id: 1,
subjects: [{
id: 1,
name: "eng"
}, {
id: 2,
name: "phy"
}]
}, {
id: 2,
subjects: [{
id: 1,
name: "eng"
}, {
id: 3,
name: "math"
}]
}];
$scope.users = users;
});
table { border-collapse: collapse; }
td { border: 1px solid Black; }
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<table ng-app="MyApp" ng-controller="MyController">
<thead>
<tr>
<td>ID</td>
<td>Subjects</td>
</tr>
</thead>
<tbody>
<tr ng-repeat-start="user in users">
<td rowspan="{{user.subjects.length+1}}">{{user.id}}</td>
</tr>
<tr ng-repeat-end ng-repeat="subject in user.subjects">
<td>S{{subject.id}}</td>
</tr>
</tbody>
</table>
Also, working fiddle here: http://jsfiddle.net/donal/r51d5fw5/17/

Similar to the nested structure of your object, you can nest your ng-repeats like this...
<tr ng-repeat = "user in users">
<td>{{user.id}}</td>
<td ng-repeat="subject in user.subjects">{{subject.name}}</td>
</tr>

I split your JSON and push it into two $scope variable, like the below:
angular.forEach($scope.user, function(user) {
$scope.userDetails.push({
userId: user.id,
});
angular.forEach(user.subjects, function(subject) {
$scope.subjectDetails.push({
userId: user.id,
subjectName: subject.name
});
});
});
In the HTML, I am using filter to filter by user's id.
<table>
<thead>
<tr>
<th style="width: 50px">ID</th>
<th style="width: 75px">Subjects</th>
</tr>
</thead>
<tbody>
<tr ng-repeat="user in userDetails">
<td><span ng-bind="user.userId"></span>
</td>
<td>
<table>
<tr ng-repeat="sub in subjectDetails | filter: {userId: user.userId}">
<td>
<div ng-bind="sub.subjectName"></div>
</td>
</tr>
</table>
</td>
</tr>
</tbody>
</table>
This is also one of the way to achieve this.
Sample Plunker

Here, I'm assuming that you want each user in users (in your JSON object) in one table, so you can do something as follows:
<table ng-repeat="user in users">
<tr>
<td>{{user.id}}</td>
<td>Subjects</td>
</tr>
<tr ng-repeat="subject in user.subjects">
<td>{{subject.id}}</td>
<td>{{subject.name}}</td>
</tr>
</table>
Adjust the html accordingly based on your needs, but this is the basic idea :)
Hope this helps!

add users object in $scope.
$scope.users=[
{id:1 ,
subjects:[
{id:1 , name:"eng"}
{id:2 , name:"phy"}
]
},
{ id:2 ,
subjects:[
{id:1 , name:"eng"}
{id:3 , name:"math"}
]
}
]
Here is the html.
<table border="1">
<tr>
<th> ID </th>
<th> subjects </th>
</tr>
<tr ng-repeat="user in users">
<td>{{user.id}}</td>
<td><table>
<tr ng-repeat="subject in user.subjects">
<td>{{subject.name}}</td>
</tr>
</table></td>
</tr>
</table>
Here is the plunker