CodeIgniter多維對象 - ActiveRecord

Question

我有一個名爲'events'的對象，它是通過$ data ['events'] =函數創建的（該函數從事件表和其他使用活動記錄的信息中抽取信息）。

事件對象的樣子：

Array 
    (
     [0] => stdClass Object 
      (
       [id] => 2 
       [course_name] => Course 3 
       [course_description] => Course 
       [course_price] => 995 
       [supplier_name] => Supplier 3 
       [location_country_code] => GB 
       [location_country] => United Kingdom 
       [location_city] => London 
       [venue_name] => Venue 2 
       [venue_address] => 2 Street 
       [venue_postcode] => EC2M 7PQ 
       [venue_city] => London 
       [venue_county] => 
       [venue_country] => United Kingdom 
       [venue_locality] => 
       [event_type] => Materials Only 
       [event_status] => Confirmed 
       [course_id] => 2 
       [event_duration] => 3 
       [event_start_date] => 2013-09-12 
       [event_date_added] => 2013-02-26 14:36:06 
       [event_status_id] => 2 
       [event_type_id] => 4 
       [tutor_id] => 0 
       [tutor_confirmed] => 0 
       [event_featured] => 0 
       [event_push] => 0 
       [event_active] => 0 
       [invigilator_id] => 0 
       [event_discount] => 
       [event_max_delegates] => 16 
       [location_id] => 1 
       [venue_id] => 1 
       [supplier_id] => 2 
      ) 

     [1] => stdClass Object 
      (
       [id] => 1 
       [course_name] => Course Name 
       [course_description] => Course Description 
       [course_price] => 995 
       [supplier_name] => Supplier 1 
       [location_country_code] => GB 
       [location_country] => United Kingdom 
       [location_city] => London 
       [venue_name] => Venue Name 
       [venue_address] => Street 
       [venue_postcode] => EC2M 7PQ 
       [venue_city] => London 
       [venue_county] => 
       [venue_country] => United Kingdom 
       [venue_locality] => 
       [event_type] => Private Venue 
       [event_status] => Provisional 
       [course_id] => 1 
       [event_duration] => 3 
       [event_start_date] => 2013-11-13 
       [event_date_added] => 2013-02-26 09:56:17 
       [event_status_id] => 1 
       [event_type_id] => 3 
       [tutor_id] => 0 
       [tutor_confirmed] => 0 
       [event_featured] => 0 
       [event_push] => 0 
       [event_active] => 0 
       [invigilator_id] => 0 
       [event_discount] => 395 
       [event_max_delegates] => 16 
       [location_id] => 1 
       [venue_id] => 1 
       [supplier_id] => 1 
      ) 

    ) 

我想使用橋通過連接到該事件的委託增加下使用ActiveRecord每一行按鍵「代表」一個嵌套的對象，那拉通過比較該表中的'event_id'和'delegate_id列'表'events_delegates_bridge'。 本質上使物體看起來像這樣：

Array 
    (
     [0] => stdClass Object 
      (
       [id] => 2 
       [course_name] => Course 3 
         [delegates] => Array 
              (
               [0] => stdClass Object 
                (
                 [id] => 1 
                 [name] => Joe Bloggs 
                ) 
               [1] => stdClass Object 
                (
                 [id] => 2 
                 [name] => Joe Smith 
                ) 
               [3] => stdClass Object 
                (
                 [id] => 3 
                 [name] => Jane Doe 
                ) 
              ) 
       [course_description] => Course 
       [course_price] => 995 
       [supplier_name] => Supplier 3 
       [location_country_code] => GB 
       [location_country] => United Kingdom 
       [location_city] => London 
       [venue_name] => Venue 2 
       [venue_address] => 2 Street 
       [venue_postcode] => EC2M 7PQ 
       [venue_city] => London 
       [venue_county] => 
       [venue_country] => United Kingdom 
       [venue_locality] => 
       [event_type] => Materials Only 
       [event_status] => Confirmed 
       [course_id] => 2 
       [event_duration] => 3 
       [event_start_date] => 2013-09-12 
       [event_date_added] => 2013-02-26 14:36:06 
       [event_status_id] => 2 
       [event_type_id] => 4 
       [tutor_id] => 0 
       [tutor_confirmed] => 0 
       [event_featured] => 0 
       [event_push] => 0 
       [event_active] => 0 
       [invigilator_id] => 0 
       [event_discount] => 
       [event_max_delegates] => 16 
       [location_id] => 1 
       [venue_id] => 1 
       [supplier_id] => 2 
      ) 
       ) 

任何想法如何更好地實現這一目標？謝謝。

事件模型 類Event_Model延伸CI_Model {

public function get_events() { 

     $this->db->select('*'); 
     $this->db->from('courses'); 
     $this->db->from('suppliers'); 
     $this->db->from('locations'); 
     $this->db->from('venues'); 
     $this->db->from('event_type'); 
     $this->db->from('event_status'); 
     $this->db->join('events', 'events.course_id = courses.id AND events.supplier_id = suppliers.id AND events.location_id = locations.id AND events.venue_id = venues.id AND events.event_type_id = event_type.id AND events.event_status_id = event_status.id', 'inner'); 
     $this->db->order_by('events.event_start_date', 'asc'); 
     $query = $this->db->get(); 

     return $query->result(); 

    } 

} 

控制板控制器 $數據[ '事件'] = $這個 - > event_model-> get_events（）;

代表模型 我已經創建了這個來獲取委託數據。你認爲它可以用來將正確的代表添加到事件對象嗎？

class Delegate_Model extends CI_Model { 

    public function get_delegates() { 

     $this->db->select('*'); 
     $this->db->from('delegates'); 
     $this->db->from('events_delegates_bridge'); 
     $this->join('delegates', 'delegates.id = events_delegates_bridge.delegate_id', 'inner'); 
     $query = $this->db->get(); 
     return $query->result(); 

    } 

} 

剛剛測試過，它顯示一個空白頁。

Answer 1

你最好有2個獨立的查詢做。

$events = array(); 
$result = $this->db->query('SELECT * FROM events WHERE ...'); 
foreach($result->result_array() as $event) { 
    $events[$event['id']] = $event; 
} 

$result = $this->db->query(' 
    SELECT * FROM events_delegates_bridge 
    JOIN delegates ON (delegate_id = delegates.id) 
    WHERE ... 
'); 
foreach($result->result_array() as $delegate) { 
    if (!empty($events[$delegate['event_id']])) { 
     $events[$delegate['event_id']]['delegates'][] = $delegate 
    } 
} 

這段代碼只是查詢事件並將它們放入由事件id索引的數組中。 然後，單獨的查詢運行以提取代表，並將它們附加到適當的事件。

Answer 2

使用$name=$variable->result_array();var_dump($name);我認爲這項工作