控制器代码-
在上述问题中，首先，我正在将数据加密到学生表中的数据库中，即新学生注册期间。但是，当我使用学生ID，家庭ID搜索时，然后使用Ajax从数据库中获取数据，但是我不明白如何解密姓名列的数据。因为当我使用 $ this-> encrypt-> decode（）时，它给了我一个我不知道使用ajax调用从数据库中获取数据时使用的错误。
=来自数据库的Ajax调用数据：-
function search_studs_admin() {
$this->output->set_content_type('application jason');
//form validation
$this->form_validation->set_rules('sel_type', 'Search Type', 'required');
$this->form_validation->set_rules('search_txt', 'Search Keyword', 'required');
//validation run
if ($this->form_validation->run() == FALSE) {
$this->output->set_output(json_encode(['result' => 0, 'error' => $this->form_validation->error_array()]));
return FALSE;
}
$sel_type = $this->input->post('sel_type');
$search_txt = $this->input->post('search_txt');
//echo $class;
if ($sel_type == 'student_id') {
$res = $this->user_model->get_student(['student_id' => $search_txt, 'status' => 'active']);
}
if ($res) {
$this->output->set_output(json_encode(['result' => 1, 'stud_data' => $res, 'all_studs' => count($res)]));
return FALSE;
} else {
$this->output->set_output(json_encode(['result' => 2]));
return FALSE;
}
}
<div class="row">
<div class="col-md-12">
<div class="panel panel-default">
<div class="panel-heading"><h3 class="panel-title">Find from the Database</h3></div>
<div class="panel-body text-center">
<div id="search_error" style="color: orangered" ></div>
<form id="frm_get_studs" name="frm_get_studs" class="form-inline" method="post" action="<?= site_url('user/search_studs_admin'); ?>" >
<label>Search using</label>
<br/>
<div class="form-group">
<select id="sel_type" name="sel_type" class="form-control" >
<option value="" >Please Select an option</option>
<option value="student_id" >Student Id</option>
<option value="student_name" >Student Name</option>
<option value="student_nric" >Student NRIC</option>
<option value="family_id" >Family ID</option>
</select>
<input type="text" id="search_txt" name="search_txt" class="form-control" placeholder="Enter Text"/>
</div>
<div class="form-group">
<button type="submit" class="btn btn-icon waves-effect waves-light btn-primary m-b-5"> <i class="fa fa-level-down"></i> </button>
</div>
</form>
OR
<form class="form-inline" id="frm_get_studs1" name="frm_get_studs1" method="post" action="<?= site_url('user/search_studs1_admin'); ?>">
<div class="form-group">
<select id="sel_class" name="sel_class" class="form-control">
<option value="">Please select a Class</option>
<?php foreach ($all_classes as $row): ?>
<option value="<?php echo $row['class_id']; ?>"><?php echo $row['class_name']; ?></option>
<?php endforeach; ?>
</select>
</div>
<div class="form-group">
<button type="submit" class="btn btn-icon waves-effect waves-light btn-primary m-b-5"> <i class="fa fa-level-down"></i> </button>
</div>
</form>
</div><!-- panel-body -->
</div> <!-- panel -->
</div> <!-- col-->
</div>
注意：<script type="text/javascript">
$(function () {
$('div.open').hide();
$('div#search_error').hide();
$('form#frm_get_studs').submit(function (e) {
e.preventDefault();
$('.remove_a').remove();
var url = $(this).attr('action');
var postData = $(this).serialize();
//console.log('hello1');
$.post(url, postData, function (o) {
if (o.result === 1) {
$('div#search_error').hide();
$('div.open').show();
var i = 0;
var output = '';
//console.log('hello');
output += '<div class="table-responsive remove_a"><table class="table table-small-font table-bordered table-striped">';
output += '<thead><tr><th>Student ID</th><th>Student Name</th><th>Family ID</th><th>Class ID</th><th>Status</th></tr></thead><tbody>';
for (i = 0; i < o.all_studs; i++) {
console.log(o.stud_data[i]['name']);
//console.log(o.stud_data[i]['br_id']);
output += '<tr>';
output += '<th><strong><a href ="<?= site_url('dashboard/search_result') . '/' ?>' + o.stud_data[i]['student_id'] + '" target ="_blank" class = "remove_a">' + o.stud_data[i]['student_id'] + '</a></strong></th>';
output += '<th>' + o.stud_data[i]['name'] + '</th>';
output += '<th>' + o.stud_data[i]['family_id'] + '</th>';
output += '<th>' + o.stud_data[i]['class_id'] + '</th>';
output += '<th>' + o.stud_data[i]['status'] + '</th>';
output += '<th><button class="but_cut" data-bind=' + o.stud_data[i]['student_id'] + '><i class="fa fa-times"></i></button></th>';
output += '</tr>';
}
output += '</tbody></table></div>';
$('div#append_here').append(output);
} else if (o.result === 0) {
$('div#search_error').show();
var output = '<ul class="search_error" >';
for (var key in o.error)
{
var value = o.error[key];
output += '<li>' + value + '</li>';
}
output += '</ul>';
$('div#search_error').html(output);
} else {
$('div#search_error').show().text('Data not Available');
}
}, 'json');
});