Getting error while uploading image and files in CodeIgniter - php

Question

I have created an employee registration form but I'm getting errors in image uploading and storing in the image folder and also getting errors in document file uploading. and errors like
Error Number: 1048
Column 'resume' cannot be null
INSERT INTO add_employee (photograph, name, date_of_birth, date_of_joining, designation, qualification, Blood_Group, exp_before_joining, exp_after_joining, total_exp, permanent_address, correspondance_address, resume, education_certificate, experience_certificate, id_proof, address_proof, contact, emergency_contact, emergency_contact_person) VALUES ('', 'xxx', '2021-04-10', '2021-04-10', 'Production', 'MCA', 'O+ve', '4', '4', '4', 'asdfgh \r\n ', ' hjghjfghdgfd,ghfchhf\r\n ', NULL, NULL, NULL, NULL, NULL, '6754321234', '6789557890', 'xzxz')
Filename: C:/xampp/htdocs/maheshfoundation/system/database/DB_driver.php
Line Number: 691
my view file
<?php echo form_open_multipart('employee/store');?>
<div class="row">
<div class="col-3">
<div class="form-group">
<label for="photograph">Photograph</label>
<input type="file" class="form-control" name="photograph" id="photograph" placeholder="Choose file" required>
<small><?php echo form_error('photograph'); ?></small>
</div>
</div>
<div class="col-3">
<div class="form-group">
<label for="name">Enter Name</label>
<input type="text" class="form-control" name="name" id="name" placeholder="Enter Name" required>
<small><?php echo form_error('name'); ?></small>
</div>
</div>
<div class="col-3">
<div class="form-group">
<label for="date_of_birth">Date of Birth</label>
<input type="date" class="form-control" name="date_of_birth" id="date_of_birth" placeholder="DOB" required>
<small><?php echo form_error('date_of_birth'); ?></small>
</div>
</div>
<div class="col-3">
<div class="form-group">
<label for="date_of_joining">Date of Joining</label>
<input type="date" class="form-control" name="date_of_joining" id="date_of_joining" placeholder="DOJ" required>
<small><?php echo form_error('date_of_joining'); ?></small>
</div>
</div>
</div>
<div class="row">
<div class="col-3">
<div class="form-group">
<label for="designation">Designation</label>
<select class="form-control" name="designation" id="designation" required>
<option value="select">---Select---</option>
<option value="Marketing">Marketing</option>
<option value="Design">Design</option>
<option value="Super Admin">Super Admin</option>
<option value="Purchase">Purchase</option>
<option value="Planning">Planning</option>
<option value="Production">Production</option>
<option value="Quality">Quality</option>
<option value="Stores">Stores</option>
<option value="Management">Management</option>
<option value="HR">HR</option>
</select>
<small><?php echo form_error('designation'); ?></small>
</div>
</div>
<div class="col-3">
<div class="form-group">
<label for="qualification">Qualification</label>
<input type="text" class="form-control" name="qualification" id="qualification" placeholder="Enter qualification" required>
<small><?php echo form_error('qualification'); ?></small>
</div>
</div>
<div class="col-3">
<div class="form-group">
<label for="Blood Group">Blood Group</label>
<input type="text" class="form-control" name="Blood_Group" id="Blood_Group" placeholder="Enter Blood Group" required>
<small><?php echo form_error('Blood_Group'); ?></small>
</div>
</div>
<div class="col-3">
<div class="form-group">
<label for="exp_before_joining">Experience Before Joining</label>
<input type="number" class="form-control" name="exp_before_joining" id="exp_before_joining" placeholder="Enter Experience Before Joining" required>
<small><?php echo form_error('exp_before_joining'); ?></small>
</div>
</div>
</div>
<div class="row">
<div class="col-3">
<div class="form-group">
<label for="exp_after_joining">Experience After Joining</label>
<input type="number" class="form-control" name="exp_after_joining" id="exp_after_joining" placeholder="Enter Experience After Joining" required>
<small><?php echo form_error('exp_after_joining'); ?></small>
</div>
</div>
<div class="col-3">
<div class="form-group">
<label for="total_exp">Total Experience</label>
<input type="text" class="form-control" name="total_exp" id="total_exp" placeholder="Enter Total Experience" required>
<small><?php echo form_error('total_exp'); ?></small>
</div>
</div>
<div class="col-3">
<div class="form-group">
<label for="Permanent_Address">Permanent Address *</label>
<textarea class="form-control" id="permanent_address" name="permanent_address" rows="4" cols="50" required>
</textarea>
<small><?php echo form_error('permanent_address'); ?></small>
</div>
</div>
<div class="col-3">
<div class="form-group">
<label for="Correspondance_Address">Correspondance Address</label>
<textarea class="form-control" id="correspondance_address" name="correspondance_address" rows="4" cols="50" required>
</textarea>
<small><?php echo form_error('correspondance_address'); ?></small>
</div>
</div>
</div>
<div class="row">
<div class="col-3">
<div class="form-group">
<label for="resume">Resume</label>
<input type="file" class="form-control" name="resume" id="resume" placeholder="Choose file" required>
<small><?php echo form_error('resume'); ?></small>
</div>
</div>
<div class="col-3">
<div class="form-group">
<label for="Education_Certificate">Education Certificate</label>
<input type="file" class="form-control" name="education_certificate" id="education_certificate" placeholder="Enter Name" required>
<small><?php echo form_error('education_certificate'); ?></small>
</div>
</div>
<div class="col-3">
<div class="form-group">
<label for="Experience_Certificate">Experience Certificate</label>
<input type="file" class="form-control" name="experience_certificate" id="experience_certificate" placeholder="DOB" required>
<small><?php echo form_error('experience_certificate'); ?></small>
</div>
</div>
<div class="col-3">
<div class="form-group">
<label for="id_proof">ID Proof *</label>
<input type="file" class="form-control" name="id_proof" id="id_proof" placeholder="DOJ" required>
<small><?php echo form_error('id_proof'); ?></small>
</div>
</div>
</div>
<div class="row">
<div class="col-3">
<div class="form-group">
<label for="Address_Proof">Address Proof</label>
<input type="file" class="form-control" name="address_proof" id="address_proof" placeholder="Choose file" required>
<small><?php echo form_error('address_proof'); ?></small>
</div>
</div>
<div class="col-3">
<div class="form-group">
<label for="contact">Permanent Contact Number *</label>
<input type="text" class="form-control" name="contact" id="contact" placeholder="Enter Permanent Contact Number" required>
<small><?php echo form_error('contact'); ?></small>
</div>
</div>
<div class="col-3">
<div class="form-group">
<label for="emergency_contact">Emergency Contact Number</label>
<input type="text" class="form-control" name="emergency_contact" id="emergency_contact" placeholder="Enter Emergency Contact Number" required>
<small><?php echo form_error('emergency_contact'); ?></small>
</div>
</div>
<div class="col-3">
<div class="form-group">
<label for="emergency_contact_person">Emergency Contact Person Name ?</label>
<input type="text" class="form-control" name="emergency_contact_person" id="emergency_contact_person" placeholder="Enter Emergency Contact Person Name" required>
<small><?php echo form_error('emergency_contact_person'); ?></small>
</div>
</div>
</div>
<button type="submit" value="submit" class="btn btn-primary">Submit</button>
<button type="reset" value="reset" class="btn btn-primary">Reset</button>
my controller file
public function store()
{
$photograph = $this->input->POST('photograph');
$name = $this->input->POST('name');
$date_of_birth = $this->input->POST('date_of_birth');
$date_of_joining = $this->input->POST('date_of_joining');
$designation = $this->input->POST('designation');
$qualification = $this->input->POST('qualification');
$Blood_Group = $this->input->POST('Blood_Group');
$exp_before_joining = $this->input->POST('exp_before_joining');
$exp_after_joining = $this->input->POST('exp_after_joining');
$total_exp = $this->input->POST('total_exp');
$permanent_address = $this->input->POST('permanent_address');
$correspondance_address = $this->input->POST('correspondance_address');
$resume = $this->input->POST('resume');
$education_certificate = $this->input->POST('education_certificate');
$experience_certificate = $this->input->POST('experience_certificate');
$id_proof = $this->input->POST('id_proof');
$address_proof = $this->input->POST('address_proof');
$contact = $this->input->POST('contact');
$emergency_contact = $this->input->POST('emergency_contact');
$emergency_contact_person = $this->input->POST('emergency_contact_person');
$configUpload['upload_path'] = 'images/'; #the folder placed in the root of project
$configUpload['allowed_types'] = 'gif|jpg|png|bmp|jpeg'; #allowed types description
$configUpload['max_size'] = '0'; #max size
$configUpload['max_width'] = '0'; #max width
$configUpload['max_height'] = '0'; #max height
$configUpload['encrypt_name'] = TRUE; #encrypt name of the uploaded file
$this->load->library('upload', $configUpload); #init the upload class
if (!$this->upload->do_upload())
{
$uploadedDetails = $this->upload->display_errors();
}
else
{
$uploadedDetails = $this->upload->data();
}
$emp_filename = $this->upload->data('file_name');
//print_r($uploadedDetails);
// // die;
echo "<br><br>";
$data = array(
'photograph' => $emp_filename,
'name' => $name,
'date_of_birth' => $date_of_birth,
'date_of_joining' => $date_of_joining,
'designation' => $designation,
'qualification' => $qualification,
'Blood_Group' => $Blood_Group,
'exp_before_joining' => $exp_before_joining,
'exp_after_joining' => $exp_after_joining,
'total_exp' => $total_exp,
'permanent_address' => $permanent_address,
'correspondance_address' => $correspondance_address,
'resume' => $resume,
'education_certificate' => $education_certificate,
'experience_certificate' => $experience_certificate,
'id_proof' => $id_proof,
'address_proof' => $address_proof,
'contact' => $contact,
'emergency_contact' => $emergency_contact,
'emergency_contact_person' => $emergency_contact_person
);
$this->load->model('EmployeeModel','emp');
$this->emp->insertEmployee($data);
redirect(base_url('add'));
}
my model file
public function insertEmployee($data)
{
return $this->db->insert('add_employee', $data);
}