Codeigniter set_value не работает на других вкладках

В настоящее время я работаю над формой, содержащей много вкладок. Когда есть ошибка, я хочу повторно заполнить форму. Он работает для первой вкладки в моей форме, однако для других вкладок она не будет повторно заполняться. Любые идеи о том, что не так?

Переменная tabNum должна сделать так, чтобы при отправке пользователем формы страница перенаправлялась обратно на нужную вкладку.

контроллер

function addResearchMicroFundView()
{
    if($this->session->userdata('logged_in'))
    {
        //Get information from session  
        $session_data = $this->session->userdata('logged_in');

        $user = $this->user_model->getUsernameNameLevel($session_data['user_id']);

        foreach ($user as $row)
        {

        }

        $data['user_id'] = $session_data['user_id'];
        $data['username'] = $row->username;
        $data['name'] = $row->name;
        $data['level'] = $row->level;
        $data['page'] = "addResearchMicroFund";

        if (!$this->session->flashdata('tabNum'))
        {
            $this->session->set_flashdata('tabNum', 1);
        }
        $this->load->view('addResearchMicroFund_view', $data);
    }
    else
    {
        //If no session, redirect to login page
        redirect('login', 'refresh');
    }
}

function addSubmitApplicantDetails()
{
    $this->form_validation->set_rules('applicant_name', 'Name of Applicant', 'required');
    $this->form_validation->set_rules('academic_position', 'Academic Position', 'required|in_list[A,B1,B2,C,D,E]');
    $this->form_validation->set_rules('applicant_faculty', 'Faculty / Centre / Unit', 'required');

    if ($this->form_validation->run() == FALSE)
    {
        $this->session->set_flashdata('tabNum', $this->input->post('tabNum'));
        $this->addResearchMicroFundView();
    }
    else
    {

    }
}

function addSubmitResearchDetails()
{
    $this->form_validation->set_rules('research_title', 'Research Title', 'required|is_natural');
    $this->form_validation->set_rules('project_summary', 'Project Summary', 'required');
    $this->form_validation->set_rules('item_necessity', 'Necessity of the item for the project', 'required');
    $this->form_validation->set_rules('expected_outcome', 'Expected Outcome', 'required');

    if ($this->form_validation->run() == FALSE)
    {
        $this->session->set_flashdata('tabNum', $this->input->post('tabNum'));
        $this->addResearchMicroFundView();
    }
    else
    {

    }
}

Посмотреть

    <section class="content-header">
        <?php if(validation_errors()):?>
            <div class="alert alert-danger"><a href="#" class="close" data-dismiss="alert" aria-label="close">&times;</a><Strong><?php echo validation_errors(); ?></Strong></div>
        <?php endif;?>
    </section>

    <!-- Main content -->
    <section class="content">
        <div class="nav-tabs-custom">
            <ul class="nav nav-tabs">
                <li <?php if ($this->session->flashdata('tabNum') == 1){echo 'class="active"';}?>><a href="#tab_1" data-toggle="tab">Applicant Details</a></li>
                <li <?php if ($this->session->flashdata('tabNum') == 2){echo 'class="active"';}?>><a href="#tab_2" data-toggle="tab">Research Details</a></li>
                <!-- <li><a href="#tab_3" data-toggle="tab">Recommendation</a></li> -->
            </ul>
            <div class="tab-content">
                <div <?php if ($this->session->flashdata('tabNum') == 1) echo "class='tab-pane active'"; else echo "class='tab-pane'"; ?> id="tab_1">
                    <div class="box box-primary">
                        <div class="box-header with-border">
                            <h3 class="box-title">Applicant Details</h3>
                        </div><!-- /.box-header -->
                        <?php
                            $attributes = array('role' => 'form', 'data-toggle' => 'validator','id' =>'validateForm');
                            echo form_open('researchMicroFund/addSubmitApplicantDetails',$attributes)?>
                        <!-- form start -->
                        <form role="form">
                        <input type="hidden" name="tabNum" value="1"/>
                        <input type="hidden" name="user_id" value="<?php echo $user_id?>"/>
                            <div class="box-body">
                                <div class="form-group has-feedback">
                                    <label>Name of Applicant</label>
                                    <input type="text" class="form-control" id="applicant_name" name="applicant_name" value="<?=!form_error('applicant_name')?set_value('applicant_name'):''?>" placeholder="Name of Applicant" required>
                                    <div class="glyphicon form-control-feedback" aria-hidden="true"></div>
                                    <div class="help-block with-errors"></div>
                                </div>
                                <div class="form-group has-feedback">
                                    <label>Academic Position</label>
                                    <p class="help-block">(A, B1, B2, C, D or E)</p>
                                    <input type="text" class="form-control" id="academic_position" name="academic_position" value="<?=!form_error('academic_position')?set_value('academic_position'):''?>" placeholder="Academic Position" required>
                                    <div class="glyphicon form-control-feedback" aria-hidden="true"></div>
                                    <div class="help-block with-errors"></div>
                                </div>
                                <div class="form-group has-feedback">
                                    <label>Faculty / Centre / Unit</label>
                                    <input type="text" class="form-control" id="applicant_faculty" name="applicant_faculty" value="<?=!form_error('applicant_faculty')?set_value('applicant_faculty'):''?>" placeholder="Faculty / Centre / Unit" required>
                                    <div class="glyphicon form-control-feedback" aria-hidden="true"></div>
                                    <div class="help-block with-errors"></div>
                                </div>
                                <div class="form-group has-feedback">
                                    <label>Type of Service</label>
                                    <select class="form-control select2" style="width: 100%;" id="service_type" name="service_type" required onchange="disableContractExpiryDate()">
                                        <option <?php echo set_select('service_type', 'Tenure', TRUE); ?> value="Tenure">Tenure</option>
                                        <option <?php echo set_select('service_type', 'Contract'); ?> value="Contract">Contract</option>
                                    </select>
                                    <div class="glyphicon form-control-feedback" aria-hidden="true"></div>
                                    <div class="help-block with-errors"></div>
                                </div>
                                <div class="form-group has-feedback">
                                    <label>Contract Expiry Date</label>
                                    <input type="date" class="form-control" id="expiry_date" name="expiry_date" value="<?=!form_error('expiry_date')?set_value('expiry_date'):''?>" placeholder="Contract Expiry Datet" required>
                                    <div class="glyphicon form-control-feedback" aria-hidden="true"></div>
                                    <div class="help-block with-errors"></div>
                                </div>
                            </div><!-- /.box-body -->
                            <div class="box-footer">
                                <button type="submit" class="btn btn-primary">Submit</button>
                            </div>
                        </form>
                    </div><!-- /.box -->
                </div>
                <div <?php if ($this->session->flashdata('tabNum') == 2) echo "class='tab-pane active'"; else echo "class='tab-pane'"; ?> id="tab_2">
                    <div class="box box-primary">
                        <div class="box-header with-border">
                            <h3 class="box-title">Research Details</h3>
                        </div><!-- /.box-header -->
                        <?php
                            $attributes = array('role' => 'form', 'data-toggle' => 'validator','id' =>'validateForm');
                            echo form_open('researchMicroFund/addSubmitResearchDetails',$attributes)?>
                        <!-- form start -->
                        <form role="form">
                        <input type="hidden" name="tabNum" value="2"/>
                        <input type="hidden" name="user_id" value="<?php echo $user_id?>"/>
                            <div class="box-body">
                                <div class="form-group has-feedback">
                                    <label>Title of Proposed Research</label>
                                    <textarea class="form-control" rows="3" id="research_title" name="research_title" value="<?=!form_error('research_title')?set_value('research_title'):''?>" placeholder="Title of Proposed Research" required></textarea>
                                    <div class="glyphicon form-control-feedback" aria-hidden="true"></div>
                                    <div class="help-block with-errors"></div>
                                </div>
                                <div class="form-group has-feedback">
                                    <label>Summary of Project</label>
                                    <p class="help-block">(not more than 200 words)</p>
                                    <textarea class="form-control" rows="3" id="project_summary" name="project_summary" value="<?=!form_error('project_summary')?set_value('project_summary'):''?>" placeholder="Summary of Project" required></textarea>
                                    <div class="glyphicon form-control-feedback" aria-hidden="true"></div>
                                    <div class="help-block with-errors"></div>
                                </div>
                                <div class="form-group has-feedback">
                                    <label>The necessity of the item for the project</label>
                                    <p class="help-block">(not more than 200 words)</p>
                                    <textarea class="form-control" rows="3" id="item_necessity" name="item_necessity" value="<?=!form_error('item_necessity')?set_value('item_necessity'):''?>" placeholder="The necessity of the item for the project" required></textarea>
                                    <div class="glyphicon form-control-feedback" aria-hidden="true"></div>
                                    <div class="help-block with-errors"></div>
                                </div>
                                <div class="form-group has-feedback">
                                    <label>Expected Outcome</label>
                                    <p class="help-block">(not more than 200 words)</p>
                                    <textarea class="form-control" rows="3" id="expected_outcome" name="expected_outcome" value="<?=!form_error('expected_outcome')?set_value('expected_outcome'):''?>" placeholder="Expected Outcome" required></textarea>
                                    <div class="glyphicon form-control-feedback" aria-hidden="true"></div>
                                    <div class="help-block with-errors"></div>
                                </div>
                            </div><!-- /.box-body -->
                            <div class="box-footer">
                                <button type="submit" class="btn btn-primary">Submit</button>
                            </div>
                        </form>
                    </div><!-- /.box -->
                </div>

Как выглядит моя форма.