How to show and hide buttons with bootstrap and angularjs? - html

Question

I have a table which contains some data and some buttons which changes according to response and user.
Here's the table.
<div class="form-group">
<div class="col-lg-12 col-md-9">
<table id="basic-datatables" class="table table-bordered" cellspacing="0" width="100">
<thead style="text-align:center">
<tr>
<th rowspan="1" colspan="1" style="width:100px; text-align:center">Employee ID</th>
<th rowspan="1" colspan="1" style="width:100px; text-align:center">Employe Name</th>
<th rowspan="1" colspan="1" style="width:100px; text-align:center">Email</th>
<th rowspan="1" colspan="1" style="width:100px; text-align:center">Department</th>
<th rowspan="1" colspan="1" style="width:100px; text-align:center">Date Created / Joined</th>
<th rowspan="1" colspan="1" style="width:110px; text-align:center">Actions</th>
</tr>
</thead>
<tbody style="text-align:match-parent">
<tr ng-repeat="data in details = (FilterDetails | limitTo:itemsPerPage:(currentPage-1)*itemsPerPage)">
<td style="text-align:center">{{data.Employee.Empid}}</td>
<td style="text-align:center">{{data.Employee.Fname}} {{data.Employee.Lname}}</td>
<td style="text-align:center">{{data.Employee.Email}}</td>
<td style="text-align:center">{{data.Department.DeptName}}</td>
<td style="text-align:center">{{data.Employee.Date_of_join | dateFormat}}</td>
<td style="text-align:center; width:100px">
<div>
<button type="submit" class="btn btn-success pad btn-sm" ng-click="Generate(data)">Generate</button>
<!--<button type="submit" class="btn btn-success pad btn-sm" ng-click="state = true" ng-hide="state">Generate</button>-->
<button type="submit" class="btn btn-warning btn-sm" ng-show="data.UserLogin.Status=='pending'">Pending</button>
<button type="submit" class="btn btn-default btn-sm" ng-show="data.UserLogin.Statuss=='pending'">Retry</button>
</div>
</td>
</tr>
</tbody>
</table>
<p ng-show="details.length == 0">No Users found.</p>
<div class="col-md-8 col-xs-12">
<uib-pagination total-items="totalEmployees" ng-model="currentPage" ng-change="pageChanged()" max-size="maxSize" boundary-links="true" class="pagination" items-per-page="itemsPerPage"></uib-pagination>
</div>
</div>
</div>
What I need to get done is that when the response comes from the JSON data the buttons have to change. Now according to this;
Generate button should show whendata.UserLogin.Status == ''(empty)
Pending button should show when data.UserLogin.Status == 'pending'
Retry button should show when data.UserLogin.Status == 'pending'
How do I achieve this. Help woud be appreciated.

Answer 1

You can use ng-show ng-hide or ng-if like below,
<button class="btn btn-default" ng-show="data.UserLogin.Status == ''">Generate </button>
or
<button class="btn btn-default" ng-hide="data.UserLogin.Status != ''">Generate </button>
or
<button class="btn btn-default" ng-if="data.UserLogin.Status == ''">Generate </button>

Answer 2

You should go for ng-if instead of ng-show or ng-hide. Because in case of ng-show or ng-hide based on the flag the content is loaded in the DOM. so if u try to change the value of flag by using web developer of browser u can be able to see the actual content. But if u go for ng-if, the content is loaded at runtime only when the condition is true. so whenever u want a quicker performance you can go for ng-show or ng-hide but if we want runtime behavior u should use ng-if.

Answer 3

You can write code as below..
<button class="btn btn-default" ng-show="data.UserLogin.Status == ''">Generate </button>
<button class="btn btn-default" ng-show="data.UserLogin.Status == 'pending'">Pending </button>
<button class="btn btn-default" ng-show="data.UserLogin.Status == 'pending'">Retry</button>

Answer 4

We can use ng-if,ng-show,ng-hide like
<button type="submit" class="btn btn-success pad btn-sm" ng-click="Generate(data)" ng-if="!data.UserLogin.Status">Generate</button> <button type="submit" class="btn btn-success pad btn-sm" ng-click="Pending (data)" ng-if="!data.UserLogin.Status">Pending </button>
use ng-if ,it is efficient

Answer 5

Use below code in the success function of the API. This code will run after you get the response and the DOM is created.
$scope.$evalAsync(function(){
$timeout(function() {
// Here set the scope variable and it will work in ng-show
}, 0); // wait...
});
Note: Do not forget to add $timeout in the controller.