Join Tables in codeigniter - php

Question

I have two tables: Company & Users.
I have a form in which i insert Company name and others details. in that same form i have a sub form Sales info and Tech info.
The data i insert in sales and tech info gets stored into users tables.and their id are stored into company table in two fields called sales_id and tech_id.
Now for a view i want to fetch company name its sales person and its tech person,How to do it?
The Code in model:
public function get_company()
{
$this->db->select('*');
$this->db->join('users','users.id = company.sales_id','users.id = company.tech_id');
$this->db->from('company');
$query = $this->db->get();
$result = $query->result();
return $result;
}
IN The View:
<?php if(count($companys)): foreach($companys as $company): ?>
<td><?php echo $company->first_name; ?></td>
how to differentiate which is sales and which is tech person?
the Controller:
public function add_company($id = NULL)
{
$this->data['company'] = $this->company_m->get_new();
$this->data['user'] = $this->user_m->get_new();
$rules = $this->company_m->rules_admin;
$this->form_validation->set_rules($rules);
if ($this->form_validation->run() == TRUE)
{
/*Inserting Sales Person Information*/
$data['first_name'] = $this->input->post('first_name_s');
$data['last_name'] = $this->input->post('last_name_s');
$data['email'] = $this->input->post('email_s');
$data['user_type'] ="sales";
$this->user_m->save($data,$id);
$sales_id = $this->db->insert_id();
/*Inserting Tech Person Information*/
$data_tech =$this->user_m->array_from_post(array('first_name','last_name','email'));
$this->user_m->save($data_tech,$id);
$tech_id = $this->db->insert_id();
/*Insert Company Information*/
$data = $this->company_m->array_from_post(array('org_name','dba','addr1','addr2','city','state','country','pin','sales_id','tech_id','tax_number','comment','url'));
$data['sales_id']= $sales_id;
$data['tech_id']= $tech_id;
$org_id = $this->company_m->save($data, $id);
redirect('admin/company');
}
// Load the view
$this->data['subview'] = 'admin/company/add';
$this->load->view('admin/_layout_main', $this->data);
}
I hope you understood my issue.
The Company table
The Users table
the View code:
<table class="table table-striped ">
<thead>
<tr class="warning">
<th>Organization Name</th>
<th>Sales Person</th>
<th>Tech Person</th>
<th>Tax No</th>
<th>Edit</th>
<th>Delete</th>
</tr>
</thead>
<tbody>
<?php if(count($companys)): foreach($companys as $company): ?>
<tr class="active">
<td contenteditable="true" onClick="edit_company(this)" onBlur="save_company(this,'org_name','<?php echo $company->id; ?>')" ><?php echo $company->org_name; ?></td>
<td contenteditable="true" onClick="edit_company(this)" onBlur="save_company(this,'sales_id','<?php echo $company->id; ?>')" ><?php echo $company->first_name; ?></td>
<td contenteditable="true" onClick="edit_company(this)" onBlur="save_company(this,'tech_id','<?php echo $company->id; ?>')" ><?php echo $company->first_name; ?></td>
<td contenteditable="true" onClick="edit_company(this)" onBlur="save_company(this,'tax_number','<?php echo $company->id; ?>')" ><?php echo $company->tax_number; ?></td>
<td><?php echo btn_edit('admin/company/edit/' . $company->id); ?></td>
<td><?php echo btn_delete('admin/company/delete/' . $company->id); ?></td>
</tr>
<?php endforeach; ?>
<?php else: ?>
<tr>
<td colspan="3">We could not find any users.</td>
</tr>
<?php endif; ?>
</tbody>
</table>

Answer 1

In model Use
public function get_company()
{
$this->db->select('*');
$this->db->from('company');
$query = $this->db->get();
$result = $query->result();
return $result;
}
For view :-
<?php if(count($companys)): foreach($companys as $company):
$tech_person = $this->db->get_where("users",array("id"=>$company->tech_id))->row();
$sales_person = $this->db->get_where("users",array("id"=>$company->sales_id))->row();
?>
<tr class="active">
<td contenteditable="true" onClick="edit_company(this)" onBlur="save_company(this,'org_name','<?php echo $company->id; ?>')" ><?php echo $company->org_name; ?></td>
<td contenteditable="true" onClick="edit_company(this)" onBlur="save_company(this,'sales_id','<?php echo $company->id; ?>')" ><?php echo $tech_person->first_name; ?></td>
<td contenteditable="true" onClick="edit_company(this)" onBlur="save_company(this,'tech_id','<?php echo $company->id; ?>')" ><?php echo $sales_person->first_name; ?></td>
<td contenteditable="true" onClick="edit_company(this)" onBlur="save_company(this,'tax_number','<?php echo $company->id; ?>')" ><?php echo $company->tax_number; ?></td>
<td><?php echo btn_edit('admin/company/edit/' . $company->id); ?></td>
<td><?php echo btn_delete('admin/company/delete/' . $company->id); ?></td>
</tr>
<?php endforeach; ?>
<?php else: ?>
<tr>
<td colspan="3">We could not find any users.</td>
</tr>
<?php endif; ?>
</tbody>
In this method you even do not need join to get tech and sales person.
Edited According to your view

Answer 2

At first move the code your have in the controller to a model. If you use a MVC framework try and use it for what it's built, it will help keep everything clean.
So now in the model you should have the following:
function getCompany(){
$query = $this->db->select('users.first_name, company.org_name')
->from('company')
->join('users','users.id = company.sales_id','users.id = company.tech_id')
->get()
->result_array();
return $query;
}
In your view you would do the following:
<?php if(count($companys)): foreach($companys as $company): ?>
<tr>
<td><?php echo $company['first_name']; ?></td>
<td><?php echo $company['org_name']; ?></td>
</tr>
<?php endforeach; endif;?>