Question

我在下面有这个模型：

<?php
class Person_model extends CI_Model {
    public function __construct() {
        $this->load->database();
    }

    public function list_persons() {
        $query = $this->db->get('persons');
        return $query->result(get_class($this));
    }
}
?>

我可以通过Person_model获取list_persons()数组。但是，在数据库架构中，我有以下表格：

Table: persons
==============
id INT NOT NULL AUTO_INCREMENT PRIMARY KEY
first_name VARCHAR NOT NULL
last_name VARCHAR NOT NULL

Table: rel_person_contact
=========================
id INT NOT NULL AUTO_INCREMENT PRIMARY KEY
person_id INT NOT NULL
contact_type INT NOT NULL
contact_value VARCHAR NOT NULL

Table: contact_types
====================
id INT NOT NULL AUTO_INCREMENT PRIMARY KEY
type_name VARCHAR NOT NULL

示例数据如下：

Table: persons
==============
id        first_name      last_name
1         John            Doe

Table: rel_person_contact
=========================
id      person_id      contact_type       contact_value
1       1              1                  johndoe@example.com
2       1              2                  +1 12345678
3       1              1                  johndoe2@example.com
4       1              4                  1 Infinite Loop, CA

Table: contact_types
====================
id     type_name
1      Email
2      Work Phone
3      Mobile Phone
4      Address

如何在rel_person_contact函数中的list_persons()中获取信息？

最好能访问这样的联系信息：

$people = $this->person_model->list_persons();
foreach($people as $person) {
    echo 'First Name: ' . $person->first_name . '<br />';
    echo 'Emails: ' . implode(',', $person->emails) . '<br />'; // where $emails is the array containing johndoe@example.com & johndoe@example.com
    echo 'Address: ' . $person->address[0] . '<br />'; // obtaining first address
}

我应该如何修改list_persons()功能？

通过Codeigniter 3中的关系表获取数据

0 个答案: