通过代理读取器加载的存储中不一致的数据损坏
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【中文标题】通过代理读取器加载的存储中不一致的数据损坏【英文标题】：Inconsistent data corruption in a store loaded through a proxy reader 【发布时间】：2011-02-11 00:26:41 【问题描述】：我们在通过代理读取器加载的商店中遇到不一致的数据损坏。
这取决于浏览器。
在桌面上的 Chrome 和 Safari 中始终运行良好。
在我们测试的两款 iPhone 上，它会根据商店加载的数据间歇性中断，更大的数据量似乎会导致更多的中断。我们看不到 JSON 数据中断的任何错误或模式。
症状：
数据加载，但属于最后几项的部分数据丢失 当发生这种数据丢失时，附加到存储的读取侦听器不会触发，它会在我们不会丢失数据的桌面浏览器上触发似乎总是丢失的数据是 start_time。
我们已经尝试调试这个有一段时间了，真的被难住了。
感谢您对为什么会发生这种情况的任何想法。
我们的 regModel
Ext.regModel('Booking',
fields: ['id', 'start', 'end', 'title', 'service', 'service_id', 'client_note', 'stylist_note', 'utc_start','day_date', 'start_time', 'end_time', "home_ph", "mobile_ph", 'work_ph', 'work_ext', 'email', 'utc_end']
);
我们的商店
var store = new Ext.data.JsonStore(
model : 'Booking',
sorters: 'utc_start',
autoLoad: false,
proxy:
type: 'ajax',
url: '../includes/get_appointments.php',
extraParams:
req_start: '1295251200',
req_end: '1295856000'
,
reader:
type: 'json',
root: 'events'
,
listeners:
load:function(store, records, success)
bookings.setLoading(false);
// check to see length of records, start i from there
for (var i = 0; i < records.length; i++)
utc_start = records[i].get('utc_start');
utc_end = records[i].get('utc_end');
// create day of week
// y,m,d
// time
var this_start_date = new Date((utc_start * 1000));
var this_end_date = new Date((utc_end * 1000));
var day_of_week = days_of_week[this_start_date.getDay()];
var date_of_month = this_start_date.getDate();
var month_of_year = month_names[this_start_date.getMonth()];
var full_year = this_start_date.getFullYear();
var start_military_hours = this_start_date.getHours();
var this_start_minutes = this_start_date.getMinutes();
var end_military_hours = this_end_date.getHours();
var this_end_minutes = this_end_date.getMinutes();
if(this_start_minutes == "0")
this_start_minutes = "00";
if(parseInt(start_military_hours) < 12)
var start_time = start_military_hours + ":" + this_start_minutes + " AM";
else if(parseInt(start_military_hours) == 12)
var start_time = start_military_hours + ":" + this_start_minutes + " PM";
else
var start_time = (parseInt(start_military_hours) - 12) + ":" + this_start_minutes + " PM";
if(this_end_minutes == "0")
this_end_minutes = "00";
if(parseInt(end_military_hours) < 12)
var end_time = end_military_hours + ":" + this_end_minutes + " AM";
else if(parseInt(end_military_hours) == 12)
var end_time = end_military_hours + ":" + this_end_minutes + " PM";
else
var end_time = (parseInt(end_military_hours) - 12) + ":" + this_end_minutes + " PM";
var day_date = day_of_week + ", " + full_year + " " + month_of_year + " " + date_of_month;
if(records[i].get('service_id') == 0)
records[i].set('title', 'Booked off');
records[i].set('service', '');
records[i].set('day_date', day_date);
records[i].set('start_time', start_time);
records[i].set('end_time', end_time);
if(store.proxy.reader.rawData.next_page_num == undefined)
store.start = store.proxy.reader.rawData.prev_page_num;
else
store.currentPage = store.proxy.reader.rawData.next_page_num;
, read:function(store,records,success)
Ext.Msg.alert('data read');
,
getGroupString : function(record)
return record.get('day_date'); // optional char from array removed
);
我们的 JSON
"events":["id":"3739","start":"2011-01-18T10:00:00-08:00","end":"2011-01-18T11:45:00-08:00","title":"Jen Cannor","service":"Haircut & Highlights","service_id":"67","client_note":"","stylist_note":"Looking forward to seeing Jen when she comes in next.","utc_start":"1295373600","email":"jen.c@cannorfarms.net","home_ph":"232-433-2222","mobile_ph":"","work_ph":"","work_ext":"","utc_end":"1295379900","id":"3740","start":"2011-01-18T12:00:00-08:00","end":"2011-01-18T13:30:00-08:00","title":"Michelle Steves","service":"Root Colour","service_id":"69","client_note":"","stylist_note":"","utc_start":"1295380800","email":"michelle5b64@telus.net","home_ph":"604-555-5555","mobile_ph":"","work_ph":"","work_ext":"","utc_end":"1295386200","id":"3741","start":"2011-01-18T13:30:00-08:00","end":"2011-01-18T14:00:00-08:00","title":"Amanda Brenner","service":"Wash & blow dry","service_id":"70","client_note":"","stylist_note":"","utc_start":"1295386200","email":"amandab@coastfitness.com","home_ph":"555-235-2366","mobile_ph":"","work_ph":"","work_ext":"","utc_end":"1295388000","id":"3742","start":"2011-01-18T14:00:00-08:00","end":"2011-01-18T15:45:00-08:00","title":"Janice Potters","service":"Haircut & Colour","service_id":"66","client_note":"","stylist_note":"","utc_start":"1295388000","email":"","home_ph":"","mobile_ph":"","work_ph":"","work_ext":"","utc_end":"1295394300","id":"3743","start":"2011-01-18T15:45:00-08:00","end":"2011-01-18T16:45:00-08:00","title":"Angus Middleton","service":"Men's haircut","service_id":"61","client_note":"","stylist_note":"","utc_start":"1295394300","email":"angusman@hotmaile.com","home_ph":"","mobile_ph":"","work_ph":"","work_ext":"","utc_end":"1295397900","id":"3025","start":"2011-01-19T08:00:00-08:00","end":"2011-01-19T09:45:00-08:00","title":"Jen Cannor","service":"Haircut & Highlights","service_id":"67","client_note":"","stylist_note":"","utc_start":"1295452800","email":"jen.c@cannorfarms.net","home_ph":"232-433-2222","mobile_ph":"","work_ph":"","work_ext":"","utc_end":"1295459100","id":"3026","start":"2011-01-19T10:00:00-08:00","end":"2011-01-19T11:45:00-08:00","title":"Karen Walker","service":"Haircut & Colour","service_id":"66","client_note":"","stylist_note":"","utc_start":"1295460000","email":"karenwalker@officesurplusdirect.net","home_ph":"","mobile_ph":"","work_ph":"","work_ext":"","utc_end":"1295466300","id":"3027","start":"2011-01-19T11:45:00-08:00","end":"2011-01-19T12:45:00-08:00","title":"Amanda Brenner","service":"Women's Haircut","service_id":"65","client_note":"","stylist_note":"","utc_start":"1295466300","email":"amandab@coastfitness.com","home_ph":"555-235-2366","mobile_ph":"","work_ph":"","work_ext":"","utc_end":"1295469900","id":"3028","start":"2011-01-19T13:00:00-08:00","end":"2011-01-19T14:30:00-08:00","title":"Mary Thacker","service":"Root Colour","service_id":"69","client_note":"","stylist_note":"","utc_start":"1295470800","email":"","home_ph":"","mobile_ph":"","work_ph":"","work_ext":"","utc_end":"1295476200","id":"3029","start":"2011-01-19T14:30:00-08:00","end":"2011-01-19T15:00:00-08:00","title":"Malcolm Anderson","service":"Men's haircut","service_id":"61","client_note":"","stylist_note":"","utc_start":"1295476200","email":"malcolm@testserveraddy.com","home_ph":"240-444-4444","mobile_ph":"","work_ph":"","work_ext":"","utc_end":"1295478000","id":"4856","start":"2011-03-09T09:00:00-08:00","end":"2011-03-09T10:00:00-08:00","title":"Simon Chalk","service":"Men's haircut","service_id":"61","client_note":"","stylist_note":"","utc_start":"1299690000","email":"","home_ph":"","mobile_ph":"","work_ph":"","work_ext":"","utc_end":"1299693600","id":"4858","start":"2011-03-09T10:00:00-08:00","end":"2011-03-09T10:15:00-08:00","title":"Brian Lytton","service":"Men's haircut","service_id":"61","client_note":"","stylist_note":"","utc_start":"1299693600","email":"","home_ph":"","mobile_ph":"","work_ph":"","work_ext":"","utc_end":"1299694500","id":"4859","start":"2011-03-09T10:15:00-08:00","end":"2011-03-09T10:30:00-08:00","title":"Brad Wicker","service":"Men's haircut","service_id":"61","client_note":"","stylist_note":"","utc_start":"1299694500","email":"","home_ph":"","mobile_ph":"","work_ph":"","work_ext":"","utc_end":"1299695400","id":"4860","start":"2011-03-09T10:30:00-08:00","end":"2011-03-09T10:45:00-08:00","title":"Brad Wicker","service":"Men's haircut","service_id":"61","client_note":"","stylist_note":"","utc_start":"1299695400","email":"","home_ph":"","mobile_ph":"","work_ph":"","work_ext":"","utc_end":"1299696300","id":"4861","start":"2011-03-09T10:45:00-08:00","end":"2011-03-09T11:00:00-08:00","title":"Brian Lytton","service":"Men's haircut","service_id":"61","client_note":"","stylist_note":"","utc_start":"1299696300","email":"","home_ph":"","mobile_ph":"","work_ph":"","work_ext":"","utc_end":"1299697200","id":"4862","start":"2011-03-09T11:00:00-08:00","end":"2011-03-09T11:15:00-08:00","title":"Brian Lytton","service":"Men's haircut","service_id":"61","client_note":"","stylist_note":"","utc_start":"1299697200","email":"","home_ph":"","mobile_ph":"","work_ph":"","work_ext":"","utc_end":"1299698100","id":"4863","start":"2011-03-09T11:15:00-08:00","end":"2011-03-09T11:30:00-08:00","title":"Simon Chalk","service":"Men's haircut","service_id":"61","client_note":"","stylist_note":"","utc_start":"1299698100","email":"","home_ph":"","mobile_ph":"","work_ph":"","work_ext":"","utc_end":"1299699000","id":"4864","start":"2011-03-09T11:30:00-08:00","end":"2011-03-09T11:45:00-08:00","title":"Chester Welling","service":"Men's haircut","service_id":"61","client_note":"","stylist_note":"","utc_start":"1299699000","email":"chester@eastern.pharma.net","home_ph":"604-555-5555","mobile_ph":"","work_ph":"","work_ext":"","utc_end":"1299699900","id":"4865","start":"2011-03-09T11:45:00-08:00","end":"2011-03-09T12:00:00-08:00","title":"Brad Wicker","service":"Men's haircut","service_id":"61","client_note":"","stylist_note":"","utc_start":"1299699900","email":"","home_ph":"","mobile_ph":"","work_ph":"","work_ext":"","utc_end":"1299700800","id":"4866","start":"2011-03-09T12:00:00-08:00","end":"2011-03-09T13:00:00-08:00","title":"Janice Potters","service":"Women's Haircut","service_id":"65","client_note":"","stylist_note":"","utc_start":"1299700800","email":"","home_ph":"","mobile_ph":"","work_ph":"","work_ext":"","utc_end":"1299704400","id":"4867","start":"2011-03-09T13:00:00-08:00","end":"2011-03-09T13:15:00-08:00","title":"Jacqui Chan","service":"Women's Haircut","service_id":"65","client_note":"","stylist_note":"","utc_start":"1299704400","email":"jc@rebelfrontier.net","home_ph":"","mobile_ph":"","work_ph":"","work_ext":"","utc_end":"1299705300","id":"4876","start":"2011-03-09T13:15:00-08:00","end":"2011-03-09T13:30:00-08:00","title":"Mary Thacker","service":"Women's Haircut","service_id":"65","client_note":"","stylist_note":"","utc_start":"1299705300","email":"","home_ph":"","mobile_ph":"","work_ph":"","work_ext":"","utc_end":"1299706200","id":"4868","start":"2011-03-10T10:15:00-08:00","end":"2011-03-10T11:15:00-08:00","title":"Trisha Roberts","service":"Women's Haircut","service_id":"65","client_note":"","stylist_note":"","utc_start":"1299780900","email":"trb483408@gmail.com","home_ph":"604-555-5555","mobile_ph":"","work_ph":"","work_ext":"","utc_end":"1299784500","id":"4870","start":"2011-03-10T11:30:00-08:00","end":"2011-03-10T12:30:00-08:00","title":"Jenson Bryant","service":"Women's Haircut","service_id":"65","client_note":"","stylist_note":"","utc_start":"1299785400","email":"","home_ph":"","mobile_ph":"","work_ph":"","work_ext":"","utc_end":"1299789000","id":"4872","start":"2011-03-10T12:45:00-08:00","end":"2011-03-10T13:00:00-08:00","title":"Jenson Bryant","service":"Women's Haircut","service_id":"65","client_note":"","stylist_note":"","utc_start":"1299789900","email":"","home_ph":"","mobile_ph":"","work_ph":"","work_ext":"","utc_end":"1299790800","id":"4873","start":"2011-03-10T13:00:00-08:00","end":"2011-03-10T13:15:00-08:00","title":"Jenson Bryant","service":"Women's Haircut","service_id":"65","client_note":"","stylist_note":"","utc_start":"1299790800","email":"","home_ph":"","mobile_ph":"","work_ph":"","work_ext":"","utc_end":"1299791700","id":"4874","start":"2011-03-10T13:15:00-08:00","end":"2011-03-10T14:15:00-08:00","title":"Simon Chalk","service":"Men's haircut","service_id":"61","client_note":"","stylist_note":"","utc_start":"1299791700","email":"","home_ph":"","mobile_ph":"","work_ph":"","work_ext":"","utc_end":"1299795300","id":"4875","start":"2011-03-11T10:15:00-08:00","end":"2011-03-11T11:15:00-08:00","title":"Karen Walker","service":"Women's Haircut","service_id":"65","client_note":"","stylist_note":"","utc_start":"1299867300","email":"karenwalker@officesurplusdirect.net","home_ph":"","mobile_ph":"","work_ph":"","work_ext":"","utc_end":"1299870900","id":"4877","start":"2011-03-11T12:00:00-08:00","end":"2011-03-11T12:15:00-08:00","title":"Amanda Brenner","service":"Women's Haircut","service_id":"65","client_note":"","stylist_note":"","utc_start":"1299873600","email":"amandab@coastfitness.com","home_ph":"555-235-2366","mobile_ph":"","work_ph":"","work_ext":"","utc_end":"1299874500","id":"4878","start":"2011-03-11T12:30:00-08:00","end":"2011-03-11T13:30:00-08:00","title":"Arnold Fieldman","service":"Men's haircut","service_id":"61","client_note":"","stylist_note":"","utc_start":"1299875400","email":"","home_ph":"","mobile_ph":"","work_ph":"","work_ext":"","utc_end":"1299879000"], "next_page_num":"7"
【问题讨论】：
【参考方案1】：这不是特定于 Sencha Touch 的问题：移动 safari 可以处理的 Ajax 响应的大小有限制：请参阅 Too large an AJAX response for mobile safari?
更新：显然这不是移动 Safari 问题，这是蜂窝网络问题。一些网络将有助于“分页”Ajax 调用——认为这是一个常规的网页下载。你能检查一下在 wifi 网络上是否仍然是这种情况？
【讨论】：
谢谢，我想我错过了。【参考方案2】：经过多次头疼后，Sencha Touch 商店似乎只能在最多大约 10,000 个字符的情况下运行良好，我猜是 8192 + json 分隔符？
在那之后，它似乎开始为我们丢失部分数据。
其他人可以证实这一点吗？
【讨论】：
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