1: <?php
 2: class Services_Model extends CI_Model {
 3:     /**
 4:      * Class Constructor
 5:      */
 6:     function __construct() {
 7:         parent::__construct();
 8:     }
 9:     
10:     /**
11:      * Get a specific row from the services db table.
12:      * 
13:      * @param int $service_id The record's id to be returned.
14:      * @return array Returns an associative array with the selected
15:      * record's data. Each key has the same name as the database 
16:      * field names.
17:      */
18:     public function get_row($service_id) {
19:         if (!is_numeric($service_id)) {
20:             throw new InvalidArgumentException('$service_id argument is not an integer : ' . $service_id);
21:         }
22:         return $this->db->get_where('ea_services', array('id' => $service_id))->row_array();
23:     }
24:     
25:     /**
26:      * Get a specific field value from the database.
27:      * 
28:      * @param string $field_name The field name of the value to be
29:      * returned.
30:      * @param int $service_id The selected record's id.
31:      * @return string Returns the records value from the database.
32:      */
33:     public function get_value($field_name, $service_id) {
34:         if (!is_numeric($service_id)) {
35:             throw new InvalidArgumentException('Invalid argument provided as $service_id : ' . $service_id);
36:         }
37:         
38:         if (!is_string($field_name)) {
39:             throw new InvalidArgumentException('$field_name argument is not a string : ' . $field_name);
40:         }
41:         
42:         if ($this->db->get_where('ea_services', array('id' => $service_id))->num_rows() == 0) {
43:             throw new InvalidArgumentException('The record with the $service_id argument does not exist in the database : ' . $service_id);
44:         }
45:         
46:         $row_data = $this->db->get_where('ea_services', array('id' => $service_id))->row_array();
47:         if (!isset($row_data[$field_name])) {
48:             throw new InvalidArgumentException('The given $field_name argument does not exist in the database : ' . $field_name);
49:         }
50:         
51:         return $this->db->get_where('ea_services', array('id' => $service_id))->row_array()[$field_name];
52:     }
53:     
54:     /**
55:      * Get all, or specific records from service's table.
56:      * 
57:      * @example $this->Model->getBatch('id = ' . $recordId);
58:      * 
59:      * @param string $whereClause (OPTIONAL) The WHERE clause of  
60:      * the query to be executed. DO NOT INCLUDE 'WHERE' KEYWORD.
61:      * @return array Returns the rows from the database.
62:      */
63:     public function get_batch($where_clause = NULL) {
64:         if ($where_clause != NULL) {
65:             $this->db->where($where_clause);
66:         }
67:         
68:         return $this->db->get('ea_services')->result_array();
69:     }
70:     
71:     /**
72:      * This method returns all the services from the database.
73:      * 
74:      * @return array Returns an object array with all the 
75:      * database services.
76:      */
77:     function get_available_services() {
78:         return $this->db->get('ea_services')->result_array();
79:     }
80: }
81: 
82: 
83: /* End of file services_model.php */
84: /* Location: ./application/models/services_model.php */