我需要导出datatable中的所有数据，所以为此我已经为导出按钮添加了ajax调用，当我点击导出按钮时，它会激活ajax调用并获取响应中的所有数据但之后在控制台中调用ajax我收到错误TypeError: a is undefined，任何人都可以帮我解决这个问题，这是我的代码
Jquery：
function cmpTable() {
var buttonCommon = {
exportOptions: {
format: {
body: function (data, row, column, node) {
if (column == '1' || column == '2' || column == '3') {
var data = data.replace(/(<([^>]+)>)/ig, "")
data = data.replace('$', '');
return data.replace('%', '');
} else {
var data = data.replace(/(<([^>]+)>)/ig, "")
return data;
}
}
}
}
};
var branch = $("#branch").val();
var soc_start_date = $("#soc_start_date").val();
var soc_end_date = $("#soc_end_date").val();
var ot_start_range = $("#ot_start_range").val();
var ot_end_range = $("#ot_end_range").val();
var ep_start_range = $("#ep_start_range").val();
var ep_end_range = $("#ep_end_range").val();
var st_start_range = $("#st_start_range").val();
var st_end_range = $("#st_end_range").val();
var hha_start_range = $("#hha_start_range").val();
var hha_end_range = $("#hha_end_range").val();
var total_start_range = $("#total_start_range").val();
var total_end_range = $("#total_end_range").val();
var msw_start_range = $("#msw_start_range").val();
var msw_end_range = $("#msw_end_range").val();
var sn_start_range = $("#sn_start_range").val();
var sn_end_range = $("#sn_end_range").val();
var icd_start_range = $("#icd_start_range").val();
var icd_end_range = $("#icd_end_range").val();
var pt_start_range = $("#pt_start_range").val();
var pt_end_range = $("#pt_end_range").val();
var ep_end_start_range = $("#ep_end_start_range").val();
var ep_end_end_range = $("#ep_end_end_range").val();
var random_episode = $("#random_episode").val();
var page_length = 10;
if (random_episode != '') {
page_length = random_episode;
}
$('#cmp_table2').DataTable({
dom: 'Bfrtip',
searching: false,
"pageLength": page_length,
"processing": true,
"serverSide": true,
"aaSorting": [[ 3, "asc" ], [ 4, "asc" ]],
"destroy":true,
'ajax': {
"url": '<?php echo site_url('adhoc/adhoc_data'); ?>',
"type": 'POST',
data: {
branch: branch,
soc_start_date:soc_start_date,
soc_end_date:soc_end_date,
ot_start_range:ot_start_range,
ot_end_range:ot_end_range,
ep_start_range:ep_start_range,
ep_end_range:ep_end_range,
st_start_range:st_start_range,st_end_range:st_end_range,
hha_start_range : hha_start_range,
hha_end_range:hha_end_range,total_start_range:total_start_range,
total_end_range:total_end_range,
msw_start_range:msw_start_range,msw_end_range:msw_end_range,
sn_start_range : sn_start_range,sn_end_range:sn_end_range,icd_start_range:icd_start_range,
icd_end_range:icd_end_range,pt_start_range:pt_start_range,pt_end_range:pt_end_range,
ep_end_start_range:ep_end_start_range,ep_end_end_range:ep_end_end_range,random_episode:random_episode
},
},
"columns": [
{ "data": "display_name"},
{ "data": "LastName"},
{ "data": "MRN"},
{ "data": "SOCDate"},
{ "data": "EpStart"},
{ "data": "EpEnd"},
{ "data": "ICD"},
{ "data": "PhyLastName"},
{ "data": "SNVisits"},
{ "data": "HHAVisits"},
{ "data": "MSWVisits"},
{ "data": "PTVisits"},
{ "data": "OTVisits"},
{ "data": "STVisits"},
{ "data": "TotVisits"},
],
buttons: [
$.extend(true, {}, buttonCommon, {
extend: 'excelHtml5',
className: 'start_class',
text: 'Export',
title: 'Target Starting Episodes',
action: function (e, dt, node, config) {
$.ajax({
url: '<?php echo site_url('adhoc/adhoc_data'); ?>',
method: 'POST',
data: {
branch: branch,
soc_start_date:soc_start_date,
soc_end_date:soc_end_date,
ot_start_range:ot_start_range,
ot_end_range:ot_end_range,
ep_start_range:ep_start_range,
ep_end_range:ep_end_range,
st_start_range:st_start_range,st_end_range:st_end_range,
hha_start_range : hha_start_range,
hha_end_range:hha_end_range,total_start_range:total_start_range,
total_end_range:total_end_range,
msw_start_range:msw_start_range,msw_end_range:msw_end_range,
sn_start_range : sn_start_range,sn_end_range:sn_end_range,icd_start_range:icd_start_range,
icd_end_range:icd_end_range,pt_start_range:pt_start_range,pt_end_range:pt_end_range,
ep_end_start_range:ep_end_start_range,ep_end_end_range:ep_end_end_range,random_episode:random_episode,
type : 'all'
}
}).then(function (ajaxReturnedData) {
dt.rows.add(ajaxReturnedData.data).draw();
$.fn.dataTable.ext.buttons.excelHtml5.action.call(this, e, dt, node, config);
});
}
}),
]
});
}
控制器操作：
if(is_use_azure()) {
$otherdb->select('tb_Branch.description as display_name,LastName,MRN,SOCDate,EpStart,EpEnd,ICD,PhyLastName,SNVisits,HHAVisits,MSWVisits,PTVisits,
OTVisits,STVisits,TotVisits');
$otherdb->from('tb_Episode, tb_Branch');
if ($is_random_episodes) {
$otherdb->order_by("RAND()");
} else {
$otherdb->order_by($column_name,$order_dir);
}
$otherdb->limit($limit,$offset);
if($where !='') {
$otherdb->where($where,NULL, FALSE);
}
if($branch !='') {
//$otherdb->where_in('BranchID',$_POST['branch'],false);
}
$episode_data = $otherdb->get();
$episode_data = $episode_data->result_array();
$otherdb->select('count(*) as total');
$otherdb->from('tb_Episode, tb_Branch');
if($where !='') {
$otherdb->where($where,NULL, FALSE);
}
if($branch !='') {
$otherdb->where_in('BranchID',$_POST['branch'],false);
}
$count_data = $otherdb->get();
//echo $otherdb->last_query(); die;
$count_data = $count_data->result_array();
} else {
$this->db->select('tb_Branch.description as display_name,LastName,MRN,SOCDate,EpStart,EpEnd,ICD,PhyLastName,SNVisits,HHAVisits,MSWVisits,PTVisits,
OTVisits,STVisits,TotVisits');
$this->db->from('tb_Episode, tb_Branch');
if ($is_random_episodes) {
$this->db->order_by("RAND()");
} else {
$this->db->order_by($column_name,$order_dir);
}
if(isset($_POST['type']) && $_POST['type'] == 'all') {
} else {
$this->db->limit($limit,$offset);
}
if($where !='') {
$this->db->where($where,NULL, FALSE);
}
if($branch !='') {
$this->db->where_in('BranchID',$_POST['branch']);
}
$episode_data = $this->db->get();
$episode_data = $episode_data->result_array();
$this->db->select('count(*) as total');
$this->db->from('tb_Episode, tb_Branch');
if($where !='') {
$this->db->where($where,NULL, FALSE);
}
if($branch !='') {
$this->db->where_in('BranchID',$branch);
}
$count_data = $this->db->get();
$count_data = $count_data->result_array();
}
$random_episode = $count_data[0]['total'];
if(isset($_POST['random_episode']) && (int)$_POST['random_episode'] && $_POST['random_episode'] != 0) {
$random_episode = $_POST['random_episode'];
}
$total_data = $random_episode;
if(isset($_POST['type']) && $_POST['type'] == 'all') {
echo json_encode(array('draw'=>$_POST['draw'],'recordsTotal'=>$total_data,'recordsFiltered'=>$total_data,'data'=>$episode_data));
} else {
echo json_encode(array('draw'=>$_POST['draw'],'recordsTotal'=>$total_data,'recordsFiltered'=>$total_data,'data'=>$episode_data));
}
die;