我正在学习 Ember,我正在尝试做一个分页列表,从 RESTful 服务中检索数据。
服务返回数据如下:
{
result: [
{
id: " ALFKI "
companyName : " Alfreds Futterkiste "
contactName : " Maria Anders " ,
ContactTitle : " Sales Representative "
address : " Obere Str 57" ,
city: "Berlin " ,
postalCode : " 12209 " ,
country: " Germany" ,
phone: " 030-0074321 "
fax: " 030-0076545 "
link: " http://localhost:2828/customers/ALFKI "
}
{
id: " ANATR "
companyName : " Ana Trujillo sandwiches and ice cream "
contactName : " Ana Trujillo " ,
ContactTitle : "Owner " ,
address : " 2222 Avenue of the Constitution " ,
city: " Mexico DF "
postalCode : " 05021 " ,
country: " Mexico " ,
phone: " (5) 555-4729 "
fax: " (5) 555-3745 "
link: " http://localhost:2828/customers/ANATR "
}
]
metadata : {
offset : 1,
limit : 10,
totalCount : 92,
links: {
self " http://localhost:2828/customers?format=json&offset=1&limit=10 "
last: " http://localhost:2828/customers?format=json&offset=82&limit=10 "
next : " http://localhost:2828/customers?format=json&offset=11&limit=10 "
}
}
}
服务器总是返回带有分页数据的集合作为链接。要请求新页面,URL 具有以下格式:
http://api.server/customers?offset=1&limit=10
我的路由配置是:
Northwind.CustomersRoute = Ember.Route.extend({
model: function () {
var controller = this.controllerFor('customer');
return this.get('store').findQuery('customer', {offset: controller.offset, limit:controller.limit});
}
});
如何为这种情况实现 Controller ?
提前致谢。
最佳答案
已解决。
新路由器
Northwind.CustomersRoute = Ember.Route.extend({
model: function () {
var controller = this.controllerFor('customer');
return this.get('store').findQuery('customer', { offset: controller.offset, limit: controller.limit });
},
setupController: function (controller, model) {
controller.set('model', model);
controller.set('contentLoaded', true);
}
});
我正在使用类似于 this 的分页混合.
Controller
Northwind.ArrayController = Ember.ArrayController.extend(Northwind.PaginationMixin, {
contentLoaded: false,
loadMetadata: function () {
if (!this.get('contentLoaded')) return;
var model = this.get('model');
var meta = this.get('store').metadataFor(model.type);
if (meta) {
// Metadata object
var metadata = Ember.Object.create({
offset: meta.offset,
limit: meta.limit,
totalCount: meta.totalCount,
links: Ember.makeArray()
});
// Pagination links
if (meta.links) {
for (var link in meta.links) {
var lnkObj = Ember.Object.create(Northwind.Common.Uri.queryParams(meta.links[link]));
lnkObj.set('rel', link);
metadata.links.pushObject(lnkObj);
}
}
this.set('metadata', metadata);
this.set('limit', metadata.limit);
this.set('totalCount', metadata.totalCount);
// offset is automatically calculated based on page property
}
}.observes('contentLoaded'),
refresh: function () {
var offset = this.get('offset');
var limit = this.get('limit');
var self = this;
self.set('contentLoaded', false);
this.get('store').findQuery('customers', { offset: offset, limit: limit }).then(function (result) {
self.set('model', result);
self.set('contentLoaded', true);
});
}.observes('page')
});
关于javascript - 结果总是分页时的服务器端分页,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/19253097/