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?
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
你可以很容易地使用Bootstrap UI指令做到这一点。
这个答案是对@Scotty给出的答案的修改。NET,我已经更改了代码,因为<pagination>指令现在已弃用。
下面的代码生成分页:
<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>
为了让它发挥作用,在你的控制器中使用这个:
$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();
关于分页的更多选项:Bootstrap UI pagination Directive
其他回答
这是一个纯javascript解决方案,我把它包装成一个Angular服务来实现像谷歌搜索结果那样的分页逻辑。
在http://codepen.io/cornflourblue/pen/KVeaQL/上的CodePen工作演示
细节和解释在这篇博文中
function PagerService() {
// service definition
var service = {};
service.GetPager = GetPager;
return service;
// service implementation
function GetPager(totalItems, currentPage, pageSize) {
// default to first page
currentPage = currentPage || 1;
// default page size is 10
pageSize = pageSize || 10;
// calculate total pages
var totalPages = Math.ceil(totalItems / pageSize);
var startPage, endPage;
if (totalPages <= 10) {
// less than 10 total pages so show all
startPage = 1;
endPage = totalPages;
} else {
// more than 10 total pages so calculate start and end pages
if (currentPage <= 6) {
startPage = 1;
endPage = 10;
} else if (currentPage + 4 >= totalPages) {
startPage = totalPages - 9;
endPage = totalPages;
} else {
startPage = currentPage - 5;
endPage = currentPage + 4;
}
}
// calculate start and end item indexes
var startIndex = (currentPage - 1) * pageSize;
var endIndex = startIndex + pageSize;
// create an array of pages to ng-repeat in the pager control
var pages = _.range(startPage, endPage + 1);
// return object with all pager properties required by the view
return {
totalItems: totalItems,
currentPage: currentPage,
pageSize: pageSize,
totalPages: totalPages,
startPage: startPage,
endPage: endPage,
startIndex: startIndex,
endIndex: endIndex,
pages: pages
};
}
}
这是我的例子。选中按钮在列表中间 控制器。 配置> > >
$scope.pagination = {total: null, pages: [], config: {count: 10, page: 1, size: 7}};
分页逻辑:
/*
Pagination
*/
$scope.$watch('pagination.total', function (total) {
if(!total || total <= $scope.pagination.config.count) return;
_setPaginationPages(total);
});
function _setPaginationPages(total) {
var totalPages = Math.ceil(total / $scope.pagination.config.count);
var pages = [];
var start = $scope.pagination.config.page - Math.floor($scope.pagination.config.size/2);
var finish = null;
if((start + $scope.pagination.config.size - 1) > totalPages){
start = totalPages - $scope.pagination.config.size;
}
if(start <= 0) {
start = 1;
}
finish = start + $scope.pagination.config.size - 1;
if(finish > totalPages){
finish = totalPages;
}
for (var i = start; i <= finish; i++) {
pages.push(i);
}
$scope.pagination.pages = pages;
}
$scope.$watch("pagination.config.page", function(page){
_setPaginationPages($scope.pagination.total);
_getRespondents($scope.pagination.config);
});
以及我对引导的看法
<ul ng-class="{hidden: pagination.total == 0}" class="pagination">
<li ng-click="pagination.config.page = pagination.config.page - 1"
ng-class="{disabled: pagination.config.page == 1}" ><a href="#">«</a></li>
<li ng-repeat="p in pagination.pages"
ng-click="pagination.config.page = p"
ng-class="{active: p == pagination.config.page}"><a href="#">{{p}}</a></li>
<li ng-click="pagination.config.page = pagination.config.page + 1"
ng-class="{disabled: pagination.config.page == pagination.pages.length}"><a href="#">»</a></li>
</ul >
它很有用
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>
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 = $scope.todos.slice(begin, end);
});
});
我做了一个工作活塞供参考。
我想添加我的解决方案,与ngRepeat和过滤器,你使用它不使用$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>