我想从不同的数据表中绘制一些图表。数据表来自一个名为ajax.php的PHP文件中的查询。
这是代码:
//JOB POST BY SALARY
function jobsalary(){
global $DB;
//query by location total post
$sql = 'SELECT lcs.salaryrange_id, count(ljj.job_id) as count, lcs.salaryrange_item FROM {local_jobs_job} ljj INNER JOIN {local_cv_salaryrange} lcs ON ljj.job_salaryrangeid = lcs.salaryrange_id WHERE job_type = 0 GROUP BY lcs.salaryrange_item';
//get the query into record
$data = $DB->get_records_sql($sql);
//put the query into array
$rows = array();
$rows = array_map(function($item) {
return (object) ['c' => [
(object) ['v' => $item->salaryrange_item, 'f' => null],
(object) ['v' => intval($item->count), 'f' => null]
]];
}, array_values($data));
// prepare return data
$cols = [
(object) ['id' => '', 'label' => 'LABEL', 'pattern' => '', 'type' => 'string'],
(object) ['id' => '', 'label' => 'TOTAL', 'pattern' => '', 'type' => 'number'],
];
$returndata = new stdClass;
$returndata->cols = $cols;
$returndata->rows = $rows;
echo json_encode($returndata);
}
//JOB POST BY JOB'S CATEGORY
function jobcategory(){
global $DB;
//query by job's category total post
$sql = 'SELECT ljc.category_id, count(ljj.job_id) as count, ljc.category_group FROM {local_jobs_job} ljj INNER JOIN {local_jobs_category} ljc ON ljj.job_categoryid = ljc.category_id where ljj.job_type = 0 group by ljc.category_group';
//get the query into record
$data = $DB->get_records_sql($sql);
//put the query into array
$rows = array();
$rows = array_map(function($item) {
return (object) ['c' => [
(object) ['v' => $item->category_group, 'f' => null],
(object) ['v' => intval($item->count), 'f' => null]
]];
}, array_values($data));
// prepare return data
$cols = [
(object) ['id' => '', 'label' => 'LABEL', 'pattern' => '', 'type' => 'string'],
(object) ['id' => '', 'label' => 'TOTAL', 'pattern' => '', 'type' => 'number'],
];
$returndata = new stdClass;
$returndata->cols = $cols;
$returndata->rows = $rows;
echo json_encode($returndata);
}
该图表是在另一个名为report.php的php文件中绘制的。这是代码:
google.charts.setOnLoadCallback(drawItems);
function drawItems(){
var functionName = JSON.stringify({values:"joblocation"});
var jsonPieChartData = $.ajax({
url: "ajax.php",
contentType: "application/json",
data: "functionName",
dataType: "json",
async: false,
}).responseText;
var piechartdata = new google.visualization.DataTable(jsonPieChartData);
var optionsChart = {
//title: 'Job Posts by Location',
pieSliceText: 'label',
tooltip: {isHtml: true},
width: 500,
height: 300,
chartArea: { left:"5%",top:"20%",width:"90%",height:"90%" }
};
// Instantiate and draw our pie chart, passing in some options.
var chart = new google.visualization.PieChart(document.getElementById('chart_div'));
//draw the chart
chart.draw(piechartdata, optionsChart);
}
但是,我不知道如何使用ajax调用为每个图表调用特定函数。以前,我只是使用ajax.php文件中的一个数据表绘制一个图表。
答案 0 :(得分:0)
根据您的要求创建多个ajax文件并在一个php文件中调用所有ajax文件