我在尝试访问数组数组时遇到错误。
这是我的模特：
$category = $this->admin_model->getCategory();
echo '<pre>';
print_r($category);
echo '</pre>';
exit();
我的控制器：
[1] => Array
(
[cat_id] => 2
[cat_name] => Women
[sub_cat] => Array
(
[0] => Array
(
[subcat_id] => 5
[cat_id] => 2
[sub_cat_name] => Clothing
)
[1] => Array
(
[subcat_id] => 6
[cat_id] => 2
[sub_cat_name] => Footware
)
[2] => Array
(
[subcat_id] => 7
[cat_id] => 2
[sub_cat_name] => Assesories
)
[3] => Array
(
[subcat_id] => 8
[cat_id] => 2
[sub_cat_name] => Beauty
)
[4] => Array
(
[subcat_id] => 9
[cat_id] => 2
[sub_cat_name] => Lingerine
)
)
)
[2] => Array
(
[cat_id] => 3
[cat_name] => Boys
[sub_cat] => Array
(
)
)
[3] => Array
(
[cat_id] => 4
[cat_name] => Girls
[sub_cat] => Array
(
)
)
[4] => Array
(
[cat_id] => 5
[cat_name] => Electronics
[sub_cat] => Array
(
)
)
)
我得到的结果：
$category = $this->admin_model->getCategory();
$data['category'] = $category;
$this->load->view('welcome_message',$data);
我的控制器：
<div class="menu-title"><?php echo $cat['sub_cat']['sub_cat_name'] ?></div>
我的观点：
<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="http://code.jquery.com/mobile/1.4.5/jquery.mobile-1.4.5.min.css">
<script src="http://code.jquery.com/jquery-1.11.2.min.js"></script>
<script type="text/javascript" src="js/jquery-1.9.1.js"></script>
<script type="text/javascript" src="js/highcharts.js"></script>
<script src="http://code.jquery.com/mobile/1.4.5/jquery.mobile-1.4.5.min.js"></script>
<link rel="stylesheet" href="//code.jquery.com/ui/1.11.4/themes/smoothness/jquery-ui.css">
<script src="//code.jquery.com/jquery-1.10.2.js"></script>
<script src="//code.jquery.com/ui/1.11.4/jquery-ui.js"></script>
<link rel="stylesheet" href="/resources/demos/style.css">
<script type="text/javascript" src="https://www.google.com/jsapi"></script>
<script type="text/javascript">
google.load("visualization", "1", {packages:["corechart"]});
$(document).ready(function(){
var receivedData = [];
var category = [];
var value = [];
var i;
var chart;
var data;
var options;
$("#firstDate,#secondDate").datepicker({
maxDate: 0
});
$("#chartButton").click(function(){
var processed_json = new Array();
var chart_data;
var x = new Object();
x.fromDate = $('#firstDate').val();
x.toDate = $('#secondDate').val();
var chart = JSON.stringify(x);
$.ajax({
url: 'http://localhost:4862/BillTracker/ControllerServlet/chart',
method: 'POST',
data: chart,
dataType: 'json',
success: function(data){
$.each(data.jsonArray, function(index) {
$.each(data.jsonArray[index], function(key, value) {
var point = [];
point.push(value);
receivedData.push(point);
})
}); //end of array
alert(receivedData);
alert(receivedData.length);
google.setOnLoadCallback(drawChart);
function drawchart(){
alert("load");
for(i=0;i<receivedData.length;i+=2){
var a = receivedData[i];
var b = receivedData[i+1];
value.push(b);
category.push(a);
}
alert(category[0]);
alert(value[0]);
var options = {
title: 'Expense View',
hAxis: {title: 'Category', titleTextStyle: {color: 'red'}},
vAxis: {title: 'Expense', titleTextStyle: {color: 'red'}}
};
data = new google.visualization.DataTable();
data.addColumn('string', 'category');
data.addColumn('number', 'value');
for(i = 0; i < category.length; i++){
data.addRow([category[i], value[i]]);
}
new google.visualization.BarChart(document.getElementById('chart_div')).
draw(data, options);
}
} //end of success func
}); // end of ajax call
}); //end of click function
});
</script>
</head>
<body>
<!--Div that will hold the pie chart-->
<div data-role="fieldcontain">
<label for="firstDate">Date</label>
<input type="text" name="firstDate" id="firstDate" placeholder="Date..." data-clear-btn="true">
</div>
<div data-role="fieldcontain">
<label for="secondDate">Date</label>
<input type="text" name="secondDate" id="secondDate" placeholder="Date..." data-clear-btn="true">
</div>
<div>
<input type="button" value="Save" id="chartButton" data-icon="check" data-iconpos="right" ></div>
<div id="container" style="width:400; height:300"></div>
</body>
</html>
我收到错误：
遇到严重错误的PHP错误：通知消息：未定义索引：sub_cat_name