我在内存中有大约1000项的数据集，并试图创建一个寻呼机 这个数据集，但我不确定怎么做。
我正在使用一个自定义过滤器函数来过滤结果，这工作得很好，但我需要以某种方式获得页数。
有线索吗?
当前回答
Angular UI引导-分页指令
查看UI Bootstrap的分页指令。我最终使用了它，而不是在这里发布的，因为它有足够的功能满足我目前的使用，并有一个完整的测试规范。
View
<!-- table here -->
<pagination
ng-model="currentPage"
total-items="todos.length"
max-size="maxSize"
boundary-links="true">
</pagination>
<!-- items/page select here if you like -->
控制器
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 = $scope.todos.slice(begin, end);
});
});
我做了一个工作活塞供参考。
遗留版本:
View
<!-- table here -->
<div data-pagination="" data-num-pages="numPages()"
data-current-page="currentPage" data-max-size="maxSize"
data-boundary-links="true"></div>
<!-- items/page select here if you like -->
控制器
todos.controller("TodoController", function($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 = $scope.todos.slice(begin, end);
});
});
我做了一个工作活塞供参考。
其他回答
Angular-Paging
是个不错的选择
帮助对大型数据集进行分页的指令，同时要求最少的实际分页信息。在这个分页方案中，我们非常依赖于服务器来“过滤”结果。其核心思想是我们只想保存项目的活动“页”——而不是将整个项目列表保存在内存中并在客户端分页。
我在这里提取了相关的部分。这是一个“没有装饰”的表格式寻呼机，所以排序或过滤不包括在内。请根据需要随意更改/添加:
//your data source may be different. the following line is //just for demonstration purposes only var modelData = [{ text: 'Test1' }, { text: 'Test2' }, { text: 'Test3' }]; (function(util) { util.PAGE_SIZE = 10; util.range = function(start, end) { var rng = []; if (!end) { end = start; start = 0; } for (var i = start; i < end; i++) rng.push(i); return rng; }; util.Pager = function(data) { var self = this, _size = util.PAGE_SIZE;; self.current = 0; self.content = function(index) { var start = index * self.size, end = (index * self.size + self.size) > data.length ? data.length : (index * self.size + self.size); return data.slice(start, end); }; self.next = function() { if (!self.canPage('Next')) return; self.current++; }; self.prev = function() { if (!self.canPage('Prev')) return; self.current--; }; self.canPage = function(dir) { if (dir === 'Next') return self.current < self.count - 1; if (dir === 'Prev') return self.current > 0; return false; }; self.list = function() { var start, end; start = self.current < 5 ? 0 : self.current - 5; end = self.count - self.current < 5 ? self.count : self.current + 5; return Util.range(start, end); }; Object.defineProperty(self, 'size', { configurable: false, enumerable: false, get: function() { return _size; }, set: function(val) { _size = val || _size; } }); Object.defineProperty(self, 'count', { configurable: false, enumerable: false, get: function() { return Math.ceil(data.length / self.size); } }); }; })(window.Util = window.Util || {}); (function(ns) { ns.SampleController = function($scope, $window) { $scope.ModelData = modelData; //instantiate pager with array (i.e. our model) $scope.pages = new $window.Util.Pager($scope.ModelData); }; })(window.Controllers = window.Controllers || {}); <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script> <table ng-controller="Controllers.SampleController"> <thead> <tr> <th> Col1 </th> </tr> </thead> <tbody> <tr ng-repeat="item in pages.content(pages.current)" title="{{item.text}}"> <td ng-bind-template="{{item.text}}"></td> </tr> </tbody> <tfoot> <tr> <td colspan="4"> <a href="#" ng-click="pages.prev()">«</a> <a href="#" ng-repeat="n in pages.list()" ng-click="pages.current = n" style="margin: 0 2px;">{{n + 1}}</a> <a href="#" ng-click="pages.next()">»</a> </td> </tr> </tfoot> </table>
前面的消息基本上推荐了如何自己构建分页。如果你和我一样，更喜欢一个完整的指令，我刚刚发现了一个很棒的指令，叫做ngTable。它支持排序、过滤和分页。
这是一个非常干净的解决方案，你所需要的是:
<table ng-table="tableParams" class="table">
<tr ng-repeat="user in $data">
<td data-title="'Name'" sortable="'name'">
{{user.name}}
</td>
<td data-title="'Age'" sortable="'age'">
{{user.age}}
</td>
</tr>
</table>
在控制器中:
$scope.tableParams = new ngTableParams({
page: 1, // show first page
count: 10, // count per page
sorting: {
name: 'asc' // initial sorting
}
}, {
total: data.length, // length of data
getData: function($defer, params) {
// use build-in angular filter
var orderedData = params.sorting() ?
$filter('orderBy')(data, params.orderBy()) :
data;
var start = (params.page() - 1) * params.count();
var end = params.page() * params.count();
$defer.resolve(orderedData.slice( start, end));
}
});
GitHub链接:https://github.com/esvit/ng-table/
ng-repeat分页
<div ng-app="myApp" ng-controller="MyCtrl">
<input ng-model="q" id="search" class="form-control" placeholder="Filter text">
<select ng-model="pageSize" id="pageSize" class="form-control">
<option value="5">5</option>
<option value="10">10</option>
<option value="15">15</option>
<option value="20">20</option>
</select>
<ul>
<li ng-repeat="item in data | filter:q | startFrom:currentPage*pageSize | limitTo:pageSize">
{{item}}
</li>
</ul>
<button ng-disabled="currentPage == 0" ng-click="currentPage=currentPage-1">
Previous
</button>
{{currentPage+1}}/{{numberOfPages()}}
<button ng-disabled="currentPage >= getData().length/pageSize - 1" ng- click="currentPage=currentPage+1">
Next
</button>
</div>
<script>
var app=angular.module('myApp', []);
app.controller('MyCtrl', ['$scope', '$filter', function ($scope, $filter) {
$scope.currentPage = 0;
$scope.pageSize = 10;
$scope.data = [];
$scope.q = '';
$scope.getData = function () {
return $filter('filter')($scope.data, $scope.q)
}
$scope.numberOfPages=function(){
return Math.ceil($scope.getData().length/$scope.pageSize);
}
for (var i=0; i<65; i++) {
$scope.data.push("Item "+i);
}
}]);
app.filter('startFrom', function() {
return function(input, start) {
start = +start; //parse to int
return input.slice(start);
}
});
</script>
我想添加我的解决方案，与ngRepeat和过滤器，你使用它不使用$watch或切片数组。
您的筛选结果将分页!
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;
};
}]);
在HTML中，确保在分页过滤器之前对ngRepeat应用过滤器。
<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>
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