I have a dataset of about 1000 items in-memory and am attempting to create a pager for this dataset, but I\'m not sure on how to do this.
I\'m using a custom filter
Since Angular 1.4, the limitTo
filter also accepts a second optional argument begin
From the docs:
{{ limitTo_expression | limitTo : limit : begin}}
begin (optional) string|number
Index at which to begin limitation. As a negative index, begin indicates an offset from the end of input. Defaults to 0.
So you don't need to create a new directive, This argument can be used to set the offset of the pagination
ng-repeat="item in vm.items| limitTo: vm.itemsPerPage: (vm.currentPage-1)*vm.itemsPerPage"
You can easily do this using Bootstrap UI directive.
This answer is a modification of the answer given by @Scotty.NET, I have changed the code because <pagination>
directive is deprecated now.
Following code generates the pagination:
<ul uib-pagination
boundary-links="true"
total-items="totalItems"
items-per-page="itemsPerPage"
ng-model="currentPage"
ng-change="pageChanged()"
class="pagination"
previous-text="‹"
next-text="›"
first-text="«"
last-text="»">
</ul>
To make it functional, use this in your controller:
$scope.filteredData = []
$scope.totalItems = $scope.data.length;
$scope.currentPage = 1;
$scope.itemsPerPage = 5;
$scope.setPage = function (pageNo) {
$scope.currentPage = pageNo;
};
$scope.pageChanged = function() {
var begin = (($scope.currentPage - 1) * $scope.itemsPerPage)
, end = begin + $scope.itemsPerPage;
$scope.filteredData = $scope.data.slice(begin, end);
};
$scope.pageChanged();
Refer to this for more options of pagination: Bootstrap UI Pagination Directive
Check out UI Bootstrap's pagination directive. I ended up using it rather than what is posted here as it has enough features for my current use and has a thorough test spec to accompany it.
<!-- table here -->
<pagination
ng-model="currentPage"
total-items="todos.length"
max-size="maxSize"
boundary-links="true">
</pagination>
<!-- items/page select here if you like -->
todos.controller("TodoController", function($scope) {
$scope.filteredTodos = []
,$scope.currentPage = 1
,$scope.numPerPage = 10
,$scope.maxSize = 5;
$scope.makeTodos = function() {
$scope.todos = [];
for (i=1;i<=1000;i++) {
$scope.todos.push({ text:"todo "+i, done:false});
}
};
$scope.makeTodos();
$scope.$watch("currentPage + numPerPage", function() {
var begin = (($scope.currentPage - 1) * $scope.numPerPage)
, end = begin + $scope.numPerPage;
$scope.filteredTodos = $scope.todos.slice(begin, end);
});
});
I have made a working plunker for reference.
<!-- table here -->
<div data-pagination="" data-num-pages="numPages()"
data-current-page="currentPage" data-max-size="maxSize"
data-boundary-links="true"></div>
<!-- items/page select here if you like -->
todos.controller("TodoController", function($scope) {
$scope.filteredTodos = []
,$scope.currentPage = 1
,$scope.numPerPage = 10
,$scope.maxSize = 5;
$scope.makeTodos = function() {
$scope.todos = [];
for (i=1;i<=1000;i++) {
$scope.todos.push({ text:"todo "+i, done:false});
}
};
$scope.makeTodos();
$scope.numPages = function () {
return Math.ceil($scope.todos.length / $scope.numPerPage);
};
$scope.$watch("currentPage + numPerPage", function() {
var begin = (($scope.currentPage - 1) * $scope.numPerPage)
, end = begin + $scope.numPerPage;
$scope.filteredTodos = $scope.todos.slice(begin, end);
});
});
I have made a working plunker for reference.
Old question but since I think my approach is a bit different and less complex I will share this and hope that someone besides me find it useful.
What I found to be an easy and small solution to pagination is to combine a directive with a filter which uses the same scope variables.
To implement this you add the filter on the array and add the directiv like this
<div class="row">
<table class="table table-hover">
<thead>
<tr>
<th>Name</th>
<th>Price</th>
<th>Quantity</th>
</tr>
</thead>
<tbody>
<tr ng-repeat="item in items | cust_pagination:p_Size:p_Step">
<td>{{item.Name}}</td>
<td>{{item.Price}}</td>
<td>{{item.Quantity}}</td>
</tr>
</tbody>
</table>
<div cust-pagination p-items="items" p-boundarylinks="true" p-size="p_Size" p-step="p_Step"></div>
</div>
p_Size and p_Step are scope variables which can be customized in the scope else the default value of the p_Size is 5 and p_Step is 1.
When a step is change in the pagination the p_Step is updated and will trigger a new filtering by cust_pagination filter. The cust_pagination filter then slices the array depending on the p_Step value like below and only return the active records selected in the pagination section
var startIndex = nStep * nPageSize;
var endIndex = startIndex + nPageSize;
var arr = items.slice(startIndex, endIndex);
return arr;
DEMO View the complete solution in this plunker
I would like to add my solution that works with ngRepeat
and filters that you use with it without using a $watch
or a sliced array.
Your filter results will be paginated!
var app = angular.module('app', ['ui.bootstrap']);
app.controller('myController', ['$scope', function($scope){
$scope.list= ['a', 'b', 'c', 'd', 'e'];
$scope.pagination = {
currentPage: 1,
numPerPage: 5,
totalItems: 0
};
$scope.searchFilter = function(item) {
//Your filter results will be paginated!
//The pagination will work even with other filters involved
//The total number of items in the result of your filter is accounted for
};
$scope.paginationFilter = function(item, index) {
//Every time the filter is used it restarts the totalItems
if(index === 0)
$scope.pagination.totalItems = 0;
//This holds the totalItems after the filters are applied
$scope.pagination.totalItems++;
if(
index >= (($scope.pagination.currentPage - 1) * $scope.pagination.numPerPage)
&& index < ((($scope.pagination.currentPage - 1) * $scope.pagination.numPerPage) + $scope.pagination.numPerPage)
)
return true; //return true if item index is on the currentPage
return false;
};
}]);
In the HTML make sure that you apply your filters to the ngRepeat
before the pagination filter.
<table data-ng-controller="myController">
<tr data-ng-repeat="item in list | filter: searchFilter | filter: paginationFilter track by $index">
<td>
{{item}}
</td>
<tr>
</table>
<ul class="pagination-sm"
uib-pagination
data-boundary-links="true"
data-total-items="pagination.totalItems"
data-items-per-page="pagination.numPerPage"
data-ng-model="pagination.currentPage"
data-previous-text="‹"
data-next-text="›"
data-first-text="«"
data-last-text="»">
</ul>
For anyone who find it difficult like me to create a paginator for a table I post this. So, in your view :
<pagination total-items="total" items-per-page="itemPerPage" ng-model="currentPage" ng-change="pageChanged()"></pagination>
<!-- To specify your choice of items Per Pages-->
<div class="btn-group">
<label class="btn btn-primary" ng-model="radioModel" btn-radio="'Left'" data-ng-click="setItems(5)">5</label>
<label class="btn btn-primary" ng-model="radioModel" btn-radio="'Middle'" data-ng-click="setItems(10)">10</label>
<label class="btn btn-primary" ng-model="radioModel" btn-radio="'Right'" data-ng-click="setItems(15)">15</label>
</div>
//And don't forget in your table:
<tr data-ng-repeat="p in profiles | offset: (currentPage-1)*itemPerPage | limitTo: itemPerPage" >
In your angularJs:
var module = angular.module('myapp',['ui.bootstrap','dialogs']);
module.controller('myController',function($scope,$http){
$scope.total = $scope.mylist.length;
$scope.currentPage = 1;
$scope.itemPerPage = 2;
$scope.start = 0;
$scope.setItems = function(n){
$scope.itemPerPage = n;
};
// In case you can replace ($scope.currentPage - 1) * $scope.itemPerPage in <tr> by "start"
$scope.pageChanged = function() {
$scope.start = ($scope.currentPage - 1) * $scope.itemPerPage;
};
});
//and our filter
module.filter('offset', function() {
return function(input, start) {
start = parseInt(start, 10);
return input.slice(start);
};
});