[英]DataTables warning: table id=table_companies - Invalid JSON response. For more information about this error, please see http://datatables.net/tn/1
请帮帮我。 我在这里有一个错误，我不知道为什么每次刷新页面时都会提示错误，
数据表警告：表 id=table_companies - JSON 响应无效。 有关此错误的更多信息，请参阅http://datatables.net/tn/1
帮我解决这个问题。 我不知道接下来会做什么
这是我的 ajax
$(document).ready(function(){
// On page load: datatable
var table_document = $('#table_document').dataTable({
"ajax": "data.php?document=get_document",
"columns": [
{ "data": "date" },
{ "data": "program", "sClass": "program" },
{ "data": "doc_type","sClass":"varchar" },
{ "data": "doc_title", "sClass": "integer" },
{ "data": "recieved", "sClass": "integer" },
{ "data": "date_recieved", "sClass": "integer" },
{ "data": "remarks", "sClass": "integer" },
{ "data": "headquarters" },
{ "data": "functions", "sClass": "functions" }
],
"aoColumnDefs": [
{ "bSortable": false, "aTargets": [-1] }
],
"lengthMenu": [[10, 25, 50, 100, -1], [10, 25, 50, 100, "All"]],
"oLanguage": {
"oPaginate": {
"sFirst": " ",
"sPrevious": " ",
"sNext": " ",
"sLast": " ",
},
"sLengthMenu": "Records per page: _MENU_",
"sInfo": "Total of _TOTAL_ records (showing _START_ to _END_)",
"sInfoFiltered": "(filtered from _MAX_ total records)"
}
});
// On page load: form validation
jQuery.validator.setDefaults({
success: 'valid',
rules: {
recieved: {
required: true,
min: 2000,
max: 2025
}
},
errorPlacement: function(error, element){
error.insertBefore(element);
},
highlight: function(element){
$(element).parent('.field_container').removeClass('valid').addClass('error');
},
unhighlight: function(element){
$(element).parent('.field_container').addClass('valid').removeClass('error');
}
});
var form_document = $('#form_document');
form_document.validate();
// Show message
function show_message(message_text, message_type){
$('#message').html('<p>' + message_text + '</p>').attr('class', message_type);
$('#message_container').show();
if (typeof timeout_message !== 'undefined'){
window.clearTimeout(timeout_message);
}
timeout_message = setTimeout(function(){
hide_message();
}, 8000);
}
// Hide message
function hide_message(){
$('#message').html('').attr('class', '');
$('#message_container').hide();
}
// Show loading message
function show_loading_message(){
$('#loading_container').show();
}
// Hide loading message
function hide_loading_message(){
$('#loading_container').hide();
}
// Show lightbox
function show_lightbox(){
$('.lightbox_bg').show();
$('.lightbox_container').show();
}
// Hide lightbox
function hide_lightbox(){
$('.lightbox_bg').hide();
$('.lightbox_container').hide();
}
// Lightbox background
$(document).on('click', '.lightbox_bg', function(){
hide_lightbox();
});
// Lightbox close button
$(document).on('click', '.lightbox_close', function(){
hide_lightbox();
});
// Escape keyboard key
$(document).keyup(function(e){
if (e.keyCode == 27){
hide_lightbox();
}
});
// Hide iPad keyboard
function hide_ipad_keyboard(){
document.activeElement.blur();
$('input').blur();
}
// Add document button
$(document).on('click', '#add_Document', function(e){
e.preventDefault();
$('.lightbox_content h2').text('Add Document');
$('#form_document button').text('Add Document');
$('#form_document').attr('class', 'form add');
$('#form_document').attr('data-id', '');
$('#form_document .field_container label.error').hide();
$('#form_document .field_container').removeClass('valid').removeClass('error');
$('#form_document #date').val('');
$('#form_document #program').val('');
$('#form_document #doc_type').val('');
$('#form_document #doc_title').val('');
$('#form_document #recieved').val('');
$('#form_document #date_recieved').val('');
$('#form_document #remarks').val('');
show_lightbox();
});
// Add document submit form
$(document).on('submit', '#form_document.add', function(e){
e.preventDefault();
// Validate form
if (form_document.valid() == true){
// Send document information to database
hide_ipad_keyboard();
hide_lightbox();
show_loading_message();
var form_data = $('#form_document').serialize();
var request = $.ajax({
url: 'data.php?document=add_document',
cache: false,
data: form_data,
dataType: 'json',
contentType: 'application/json; charset=utf-8',
type: 'get'
});
request.done(function(output){
if (output.result == 'success'){
// Reload datable
table_document.api().ajax.reload(function(){
hide_loading_message();
var program = $('#program').val();
show_message("program '" + program + "' added successfully.", 'success');
}, true);
} else {
hide_loading_message();
show_message('Add request failed', 'error');
}
});
request.fail(function(jqXHR, textStatus){
hide_loading_message();
show_message('Add request failed: ' + textStatus, 'error');
});
}
});
// Edit document button
$(document).on('click', '.function_edit a', function(e){
e.preventDefault();
// Get document information from database
show_loading_message();
var doc_id = $(this).data('doc_id');
var request = $.ajax({
url: 'data.php?document=get_document',
cache: false,
data: 'doc_id=' + doc_id,
dataType: 'json',
contentType: 'application/json; charset=utf-8',
type: 'get'
});
request.done(function(output){
if (output.result == 'success'){
$('.lightbox_content h2').text('Edit document');
$('#form_documentbutton').text('Edit document');
$('#form_document').attr('class', 'form edit');
$('#form_document').attr('data-id', id);
$('#form_document .field_container label.error').hide();
$('#form_document .field_container').removeClass('valid').removeClass('error');
$('#form_document #date').val(output.data[0].date);
$('#form_document #program').val(output.data[0].program);
$('#form_document #doc_type').val(output.data[0].doc_type);
$('#form_document #doc_title').val(output.data[0].doc_title);
$('#form_document #recieved').val(output.data[0].recieved);
$('#form_document #date_recieved').val(output.data[0].date_recieved);
$('#form_document #remarks').val(output.data[0].remaks);
hide_loading_message();
show_lightbox();
} else {
hide_loading_message();
show_message('Information request failed', 'error');
}
});
request.fail(function(jqXHR, textStatus){
hide_loading_message();
show_message('Information request failed: ' + textStatus, 'error');
});
});
// Edit document submit form
$(document).on('submit', '#form_document.edit', function(e){
e.preventDefault();
// Validate form
if (form_document.valid() == true){
// Send document information to database
hide_ipad_keyboard();
hide_lightbox();
show_loading_message();
var id = $('#form_document').attr('data-id');
var form_data = $('#form_document').serialize();
var request = $.ajax({
url: 'data.php?document=edit_document&doc_id=' + doc_id,
cache: false,
data: form_data,
dataType: 'json',
contentType: 'application/json; charset=utf-8',
type: 'get'
});
request.done(function(output){
if (output.result == 'success'){
// Reload datable
table_document.api().ajax.reload(function(){
hide_loading_message();
var doc_title = $('#doc_title').val();
show_message("document '" + doc_title + "' edited successfully.", 'success');
}, true);
} else {
hide_loading_message();
show_message('Edit request failed', 'error');
}
});
request.fail(function(jqXHR, textStatus){
hide_loading_message();
show_message('Edit request failed: ' + textStatus, 'error');
});
}
});
// Delete document
$(document).on('click', '.function_delete a', function(e){
e.preventDefault();
var doc_title = $(this).data('name');
if (confirm("Are you sure you want to delete '" + doc_title + "'?")){
show_loading_message();
var id = $(this).data('id');
var request = $.ajax({
url: 'data.php?document=delete_document&id=' + id,
cache: false,
dataType: 'json',
contentType: 'application/json; charset=utf-8',
type: 'get'
});
request.done(function(output){
if (output.result == 'success'){
// Reload datable
table_document.api().ajax.reload(function(){
hide_loading_message();
show_message("document '" + doc_title + "' deleted successfully.", 'success');
}, true);
} else {
hide_loading_message();
show_message('Delete request failed', 'error');
}
});
request.fail(function(jqXHR, textStatus){
hide_loading_message();
show_message('Delete request failed: ' + textStatus, 'error');
});
}
});
});
PHP文件
<?php
// Database details
$db_server = 'localhost';
$db_username = 'root';
$db_password = '';
$db_name = 'dmsregister';
// Get document (and doc_id)
$document = '';
$doc_id = '';
if (isset($_GET['document'])){
$document = $_GET['document'];
if ($document == 'get_document' ||
$document == 'get_document' ||
$document == 'add_document' ||
$document == 'edit_document' ||
$document == 'delete_document'){
if (isset($_GET['doc_id'])){
$doc_id = $_GET['doc_id'];
if (!is_numeric($doc_id)){
$doc_id = '';
}
}
} else {
$document = '';
}
}
// Prepare array
$mysql_data = array();
// Valdoc_id document found
if ($document != ''){
// Connect to database
$db_connection = mysqli_connect($db_server, $db_username, $db_password, $db_name);
if (mysqli_connect_errno()){
$result = 'error';
$message = 'Failed to connect to database: ' . mysqli_connect_error();
$document = '';
}
// Execute document
if ($document == 'get_document'){
// Get companies
$query = "SELECT * FROM blgd ORDER BY doc_id";
$query = mysqli_query($db_connection, $query);
if (!$query){
$result = 'error';
$message = 'query error';
} else {
$result = 'success';
$message = 'query success';
while ($document = mysqli_fetch_array($query)){
$functions = '<div class="function_buttons"><ul>';
$functions .= '<li class="function_edit"><a data-doc_id="' . $document['doc_id'] . '" data-name="' . $document['program'] . '"><span>Edit</span></a></li>';
$functions .= '<li class="function_delete"><a data-doc_id="' . $document['doc_id'] . '" data-name="' . $document['program'] . '"><span>Delete</span></a></li>';
$functions .= '</ul></div>';
$mysql_data[] = array(
"date" => $document['date'],
"program" => $document['program'],
"doc_type" => $document['doc_type'],
"doc_title" => $document['doc_title'],
"recieved" => $document['recieved'],
"date_recieved" => $document['date_recieved'],
"remarks" => $document['remarks'],
"functions" => $functions
);
}
}
} elseif ($document == 'get_document'){
// Get document
if ($doc_id == ''){
$result = 'error';
$message = 'doc_id missing';
} else {
$query = "SELECT * FROM blgd WHERE doc_id = '" . mysqli_real_escape_string($db_connection, $doc_id) . "'";
$query = mysqli_query($db_connection, $query);
if (!$query){
$result = 'error';
$message = 'query error';
} else {
$result = 'success';
$message = 'query success';
while ($document = mysqli_fetch_array($query)){
$mysql_data[] = array(
"date" => $document['date'],
"program" => $document['program'],
"doc_type" => $document['doc_type'],
"doc_title" => $document['doc_title'],
"recieved" => $document['recieved'],
"date_recieved" => $document['date_recieved'],
"remarks" => $document['remarks'],
);
}
}
}
} elseif ($document == 'add_document'){
// Add document
$query = "INSERT INTO blgd SET ";
if (isset($_GET['date'])) { $query .= "date = '" . mysqli_real_escape_string($db_connection, $_GET['rank']) . "', "; }
if (isset($_GET['program'])) { $query .= "program = '" . mysqli_real_escape_string($db_connection, $_GET['document_name']) . "', "; }
if (isset($_GET['doc_type'])) { $query .= "doc_type = '" . mysqli_real_escape_string($db_connection, $_GET['industries']) . "', "; }
if (isset($_GET['doc_title'])) { $query .= "doc_title = '" . mysqli_real_escape_string($db_connection, $_GET['revenue']) . "', "; }
if (isset($_GET['recieved'])) { $query .= "recieved = '" . mysqli_real_escape_string($db_connection, $_GET['fiscal_year']) . "', "; }
if (isset($_GET['date_recieved'])) { $query .= "date_recieved = '" . mysqli_real_escape_string($db_connection, $_GET['employees']) . "', "; }
if (isset($_GET['remarks'])) { $query .= "remarks = '" . mysqli_real_escape_string($db_connection, $_GET['market_cap']) . "', "; }
$query = mysqli_query($db_connection, $query);
if (!$query){
$result = 'error';
$message = 'query error';
} else {
$result = 'success';
$message = 'query success';
}
} elseif ($document == 'edit_document'){
// Edit document
if ($doc_id == ''){
$result = 'error';
$message = 'doc_id missing';
} else {
$query = "UPDATE blgd SET ";
if (isset($_GET['date'])) { $query .= "date = '" . mysqli_real_escape_string($db_connection, $_GET['rank']) . "', "; }
if (isset($_GET['program'])) { $query .= "program = '" . mysqli_real_escape_string($db_connection, $_GET['document_name']) . "', "; }
if (isset($_GET['doc_type'])) { $query .= "doc_type = '" . mysqli_real_escape_string($db_connection, $_GET['industries']) . "', "; }
if (isset($_GET['doc_title'])) { $query .= "doc_title = '" . mysqli_real_escape_string($db_connection, $_GET['revenue']) . "', "; }
if (isset($_GET['recieved'])) { $query .= "recieved = '" . mysqli_real_escape_string($db_connection, $_GET['fiscal_year']) . "', "; }
if (isset($_GET['date_recieved'])) { $query .= "date_recieved = '" . mysqli_real_escape_string($db_connection, $_GET['employees']) . "', "; }
if (isset($_GET['remarks'])) { $query .= "remarks = '" . mysqli_real_escape_string($db_connection, $_GET['market_cap']) . "', "; }
$query .= "WHERE doc_id = '" . mysqli_real_escape_string($db_connection, $doc_id) . "'";
$query = mysqli_query($db_connection, $query);
if (!$query){
$result = 'error';
$message = 'query error';
} else {
$result = 'success';
$message = 'query success';
}
}
} elseif ($document == 'delete_document'){
// Delete document
if ($doc_id == ''){
$result = 'error';
$message = 'doc_id missing';
} else {
$query = "DELETE FROM blgd WHERE doc_id = '" . mysqli_real_escape_string($db_connection, $doc_id) . "'";
$query = mysqli_query($db_connection, $query);
if (!$query){
$result = 'error';
$message = 'query error';
} else {
$result = 'success';
$message = 'query success';
}
}
}
// Close database connection
mysqli_close($db_connection);
}
// Prepare data
$data = array(
"result" => $result,
"message" => $message,
"data" => $mysql_data
);
// Convert PHP array to JSON array
$json_data = json_encode($data);
print $json_data;
?>
HTML文件
<?php
// Initialize the session
session_start();
// If session variable is not set it will redirect to login page
if(!isset($_SESSION['username']) || empty($_SESSION['username'])){
header("location: indexlogin.php");
exit;
}
echo "welcome".$_SESSION['username'];
?>
<!doctype html>
<html lang="en" dir="ltr">
<head>
<title>BLGD DOCUMENT MANAGEMENT SYSTEM</title>
<meta charset="utf-8">
<meta name="viewport" content="width=1000, initial-scale=1">
<meta http-equiv="X-UA-Compatible" content="IE=Edge">
<link rel="stylesheet" href="//fonts.googleapis.com/css?family=Oxygen:400,700">
<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css">
<link rel="stylesheet" href="layout.css">
<script charset="utf-8" src="//ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>
<script charset="utf-8" src="//cdn.datatables.net/1.10.0/js/jquery.dataTables.js"></script>
<script charset="utf-8" src="//cdn.jsdelivr.net/jquery.validation/1.13.1/jquery.validate.min.js"></script>
<script charset="utf-8" src="webapp.js"></script>
</head>
<body>
<div id="page_container">
<h1>BLGD DOCUMENT MANAGEMENT SYSTEM</h1>
<button type="button" class="button" id="add_company">Add Document</button>
<table class="datatable" id="table_companies">
<thead>
<tr>
<th>Document ID</th>
<th> date</th>
<th>Program</th>
<th>document type</th>
<th>Document Title</th>
<th>recieved by</th>
<th>date recieved</th>
<th>Remarks</th>
<th>Functions</th>
</tr>
</thead>
<tbody>
</tbody>
</table>
</div>
<div class="lightbox_bg"></div>
<div class="lightbox_container">
<div class="lightbox_close"></div>
<div class="lightbox_content">
<h2>Add Document</h2>
<form class="form add" id="form_company" data-id="" novalidate>
<div class="input_container">
<label for="rank">date <span class="required">*</span></label>
<div class="field_container">
<input type="date" class="text" name="date" id="date" value="" required>
</div>
</div>
<div class="input_container">
<label for="company_name">Program <span class="required">*</span></label>
<div class="field_container">
<select name="program" value="" placeholder="select a program" id="program">
<option name="program">Performance Challenge Fund </option>
<option name="program"> Gender and Development </option>
<option name="program"> Other Interagency Program </option>
</select>
</div>
</div>
<div class="input_container">
<label for="doc_type">Document Type <span class="required">*</span></label>
<div class="field_container">
<select name="doc_type" value="" placeholder="select a document type" id="doc_type">
<option name="doc_type">Memorandum </option>
<option name="doc_type"> Department Order </option>
<option name="doc_type"> Bureau Order </option>
<option name="doc_type"> advisory </option>
<option name="doct_type"> report </option>
<option name="doc_type"> Activity Design </option>
<option name="doc_type"> Others </option>
</select>
</div>
</div>
<div class="input_container">
<label for="doc_title">Document Title <span class="required">*</span></label>
<div class="field_container">
<input type="text" class="text" name="doc_title" id="doc_title" value="" required>
</div>
</div>
<div class="input_container">
<label for="recieved">Recieved by <span class="required">*</span></label>
<div class="field_container">
<input type="text" class="text" name="recieved" id="recieved" value="" required>
</div>
</div>
<div class="input_container">
<label for="date_recieved">Date Recieved <span class="required">*</span></label>
<div class="field_container">
<input type="date" min="0" class="date" name="date_recieved" id="date_recieved" value="" required>
</div>
</div>
</div>
<div class="button_container">
<button type="submit">Add Document</button>
</div>
</form>
</div>
</div>
<noscript id="noscript_container">
<div id="noscript" class="error">
<p>JavaScript support is needed to use this page.</p>
</div>
</noscript>
<div id="message_container">
<div id="message" class="success">
<p>This is a success message.</p>
</div>
</div>
<div id="loading_container">
<div id="loading_container2">
<div id="loading_container3">
<div id="loading_container4">
Loading, please wait...
</div>
</div>
</div>
</div>
</body>
</html>
我有同样的问题，只需更改 url 即可解决。
http://127.0.0.1:8000/admin/doctors/data/1draw=1&columns%5B0%5D%5Bdata%5D=id&columns%5B0%5D%5Bname%5D
至
http://127.0.0.1:8000/admin/doctor/data/1draw=1&columns%5B0%5D%5Bdata%5D=id&columns%5B0%5D%5Bname%5D
医生医生
如果您的问题仍然没有解决，像这样尝试，可能会有所帮助
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[英]Datatables.net | table id=tbl_portfolio - Invalid JSON response
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[英]Datatables warning table id=datatables-example - invalid json response
DataTables警告：table id = example - 无效的JSON响应
[英]DataTables warning: table id=example - Invalid JSON response
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