PHP-带有回调的JSONP和GET-帮助需要更正错误
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这是我的JSONP文件：
<?php
header('Content-type: application/javascript;');
header("access-control-allow-origin: *");
header("Access-Control-Allow-Methods: GET");
//db connection detils
$host = "localhost";
$user = "test";
$password = "test";
$database = "myradiostation1";
//make connection
$server = mysql_connect($host, $user, $password);
$connection = mysql_select_db($database, $server);
//query the database
$query = mysql_query("SELECT *, DATE_FORMAT(start, '%d/%m/%Y %H:%i:%s') AS start,
DATE_FORMAT(end, '%d/%m/%Y %H:%i:%s') AS end FROM radiostation1");
//loop through and return results
for ($x = 0, $numrows = mysql_num_rows($query); $x < $numrows; $x++) {
$row = mysql_fetch_assoc($query);
$shows[$x] = array("id" => $row["id"], "startminutes" => $row["startminutes"], "start" => $row["start"], "endminutes" => $row["endminutes"],"end" => $row["end"],"mediumname" => $row["mediumname"], "longname" => $row["longname"], "description" => $row["description"],"short_id" => $row["short_id"],"promomessage" => $row["promomessage"],"email" => $row["email"],"phonenumber" => $row["phonenumber"],"textnumber" => $row["textnumber"],"textprefix" => $row["textprefix"],"showimage" => $row["showimage"],"longdescription" => $row["longdescription"],"facebooklink" => $row["facebooklink"],"otherlink" => $row["otherlink"],"websitelink" => $row["websitelink"],"keywords" => $row["keywords"] );
}
//echo JSON to page
$response = $_GET["callback"] . "(" . json_encode($shows) . ");";
echo $response;
?>
它确实可以工作到一定程度,但是得到{“ success”：true,“ error”：“”,“ data”：{“ schedule”：如我在json_encode之前的this site所示.
但是,我无法在表中显示任何数据,尽管在http://www.myradio1.localhost/onairschedule.php上查看时它确实会在屏幕上生成代码.
实际代码存储在http://www.myradiostations.localhost/schedule.php
并且回调函数可以正常工作,一个示例是http://www.myradiostations.localhost/schedule.php?callback=?&name=Northern+FM和http://www.myradiostations.localhost/schedule.php?callback=?&name=Southern+FM,但是我需要做些什么才能使其更改,如以下示例所示：
this example和this example,如果不存在这样的文件,则会生成错误消息,例如this.
我已经中途了,只需要一些建议来修复我的代码！
基本上,我正在尝试做的是…使JSONP在HTML表中工作,这将根据页面上javascript文件中的URL改变内容,即：
var doFades = true;
var LocalhostRadioStations = {
Schedule : {}
};
$(document).ready(function(){
LocalhostRadioStations.Schedule.days = ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday']
LocalhostRadioStations.Schedule.Show = function () {
_s = null;
_startDate = null;
_endDate = null;
this.days = LocalhostRadioStations.Schedule.days;
_selector = '';
this.setShow = function(s) {
this._s = s;
this._startDate = new Date( parseInt(s.startminutes, 10) * 1000);
this._endDate = new Date(parseInt(s.endminutes, 10) * 1000 );
};
this.getEndDate = function(){
return this._endDate;
}
this.getStartDate = function(){
return this._startDate;
}
this._getShowDay = function (){
return this.days[this.getStartDate().getDay()];
};
this._getShowUnitsTaken = function(){
// if it's the same day
return this._getEndUnits() - this._getStartUnits();
};
this._getEndUnits = function(){
if(this.getEndDate().getHours() == 0)
{
//console.log(this._s.longname +' ends at midnight');
return 48;
}
return this.getEndDate().getMinutes() !== 0 ? (this.getEndDate().getHours() * 2) : (this.getEndDate().getHours() * 2);
};
this._getStartUnits = function(){
if(this.getStartDate().getHours() == 0)
{
return 0;
}
return this.getStartDate().getMinutes() !== 0 ? (this.getStartDate().getHours() * 2) : (this.getStartDate().getHours() * 2);
};
this.getCellPositions = function() {
return {
'start' : this.getStartDate(),
'end' : this.getEndDate(),
'colIndex' : this.getStartDate().getDay() + 2,
'startUnits' : this._getStartUnits(),
'endUnits' : this._getEndUnits(),
'unitsTaken' : this._getShowUnitsTaken()
}
};
this.pad = function(number){
return number < 10 ? '0'+number : number;
};
// return the table cell html.
this.toHtml = function () {
var d = new Date();
var units = this._getStartUnits();
var rowspan = this._getShowUnitsTaken();
var desc = this._s.description;
var name = this._s.longname;
var starttime = this.pad(this.getStartDate().getHours()) + ':' + this.pad(this.getStartDate().getMinutes());
var endtime = this.pad(this.getEndDate().getHours()) + ':' + this.pad(this.getEndDate().getMinutes());
var site = this._s.websitelink;
var cls = this.isActive() ? 'current-program' : '';
var isToday = this.getStartDate().getDay() === d.getDay() ? 'active-program' : '';
var html = '<td class="schedule-show ' + isToday + ' ' + cls + '" rowspan="' + rowspan + '" data-start="' + this.getStartDate() + '" data-end="' + this.getEndDate() + '">';
html += '<div>';
html += '<a href="' + site + '" title="' + desc + '">' + name + '</a>';
html += '</div>';
if(doFades)
{
html += '<div class="schedule_details clearfix" style="display:none;">';
html += '<img width="105px" height="105px" alt="' + desc + '" src="' + this._s.showimage + '">';
html += '<strong>' + name + '</strong>';
html += '<p>' + desc + '</p>';
html += '<span>' + starttime + ' - ' + endtime +'</span>';
html += '</div>';
}
html += '</td>';
return html;
};
this.setTableSelector = function(sel){
this._selector = sel;
};
// check if we should add the active class.
this.isActive = function(){
var t = new Date();
return t >= this.getStartDate() && t <= this.getEndDate();
};
};
LocalhostRadioStations.Schedule.ScheduleGen = function(){
return {
insertShow : function(show) {
var p = show.getCellPositions();
$('tr#units-' + p.startUnits).append(show.toHtml());
},
init : function (stationName){
var self = this;
// load the schedule.
$.getJSON('http://www.myradiostations.localhost/schedule.php?callback=?&name=', {
name: 'Northern FM'
}, function(json){
// loop each show and append to our giant table.
// this is well sick.
if(json.success === false)
{
$('.content-inner table').remove();
$('<div>errors</div>').appendTo('.content-inner');
}
else
{
var currentDay = '';
var day = 0;
// highlight the current time..
var d = new Date();
var weekStart = new Date();
weekStart.setDate(d.getDate()-6-(d.getDay()||7));
$.each(json.data.schedule, function(i, broadcast){
var dStart = new Date( parseInt(broadcast.startminutes, 10) * 1000);
var dEnd = new Date(parseInt(broadcast.endminutes, 10) * 1000 );
/*// transform to a show object defined above, if the show spans 2 days we create two show objects.
// IF THE SHOW STARTS/ENDS AT MIDNIGHT, DON'T SPLIT IT.
if(dStart.getHours() !== 0 && dEnd.getHours() !== 0 && dStart.getDate() != dEnd.getDate())
{
var showOne = new LocalhostRadioStations.Schedule.Show();
showOne.setShow(broadcast);
// set to midnight
showOne.getEndDate().setHours(0);
showOne.getEndDate().setMinutes(dStart.getMinutes());
// append first half of show.
self.insertShow(showOne);
// handle second half.
var showTwo = new LocalhostRadioStations.Schedule.Show();
showTwo.setShow(broadcast);
showTwo.getStartDate().setDate(showTwo.getStartDate().getDate() + 1);
showTwo.getStartDate().setHours(0);
showTwo.getStartDate().setMinutes(dEnd.getMinutes());
//console.log('2nd Half Start: ' + showTwo.getStartDate());
//console.log('2nd Half End: ' + showTwo.getEndDate());
self.insertShow(showTwo);
}
else
{*/
var show = new LocalhostRadioStations.Schedule.Show();
show.setShow(broadcast);
show.setTableSelector('table#schedule');
// add the show to the table. Thankfully the order these come out the API means they get added
// in the right place. So don't change the schedule builder code!
self.insertShow(show);
//}
});
var days = LocalhostRadioStations.Schedule.days;
// apply the current day / time classes
$('th:contains('+ days[d.getDay()]+')').addClass('active');
$('td.time').each(function(i, cell){
// get the value, convert to int.
var hours = $(cell).html().split(':')[0];
// compare the hours with now, add class if matched.
if(parseInt(hours, 10) === d.getHours())
{
$(cell).addClass('current_time');
}
});
}
if(doFades)
{
// apply events to show info fade in / out.
$('td.schedule-show').hover(function(){
$(this).find('.schedule_details').fadeIn('fast');
}, function(){
$(this).find('.schedule_details').fadeOut('fast');
});
}
});
}
};
}();
LocalhostRadioStations.Schedule.ScheduleGen.init(twittiName);
});
它应该根据JSONP更改计划,但是我该怎么做才能解决它？
基本上,我正在尝试制作自己的本地主机版本http://radioplayer.bauerradio.com/schedule.php?callback=&name=Rock+FM及其JSON / JSONP(我不确定确切的类型是什么,但是该站点还是实验性的,并且在.localhost域上),以便进行测试,其中的内容取自数据库,并根据工作站名称进行更改,例如http://radioplayer.bauerradio.com/schedule.php?callback=&name=Metro+Radio和http://radioplayer.bauerradio.com/schedule.php?callback=&name=Forth+One等.
编辑：我的页面的完整代码可以在http://pastebin.com/ENhR6Q9j看到
解决方法:
我不确定到底缺少什么,但是从您到目前为止提供的代码中,我制作了一个jsfiddle：
我修改了一些内容以使其正常工作(主要是添加内容),因为我不知道您的原始HTML文件.但是我也根据您的要求进行了一些更改.首先,我将$.getJSON调用修改为：
$.getJSON('http://radioplayer.bauerradio.com/schedule.php?callback=?', {
name: stationName //stationName is from the argument passed
}, function(json){...})
哪个应该根据传递给的信息来回馈该站点
LocalhostRadioStations.Schedule.ScheduleGen.init(twittiName);
为了使其更有趣,我还添加了一些从url读取的代码.在这种情况下,如果您转到带有domain.htm / page？Northern FM的页面,它将在？之后读取文本.并将其放在twittiName中.
var twittiName="Rock FM"; //default station
if(window.location.search){
twittiName=window.location.search.substring(1) //or window.location.hash
}
试图寻找可能在您的公共站点上存在的其他电台,但到目前为止,我只能使用“？Rock FM”进行测试.但这确实意味着您可以显示错误,您的代码可以按原样处理.
因此,看来您的代码大部分都可以运行,但是如果我错过了任何内容,请进行注释.
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