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namespace appmodel;

use thinkModel;

class User extends Model
{
    // ½ç˵һ¶ÔÒ»¹ØÁªÒªÁì
    public function detail()
    {
        return $this->hasOne('UserDetail');
    }
}

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namespace appmodel;

use thinkModel;

class UserDetail extends Model
{
    // ½ç˵·´Ïò¹ØÁªÒªÁì
    public function user()
    {
        return $this->belongsTo('User');
    }
}

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// ÅÌÎÊÓû§ÐÅÏ¢£¬°üÀ¨ÆäÏêϸÐÅÏ¢
$user = User::with(['detail'])->find(1);

// ÅÌÎÊÓû§ÐÅÏ¢£¬Ö»°üÀ¨ÆäÏêϸÐÅÏ¢
$user = User::with(['detail' => function($query){
    $query->field('user_id, address');
}])->find(1);

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namespace appmodel;

use thinkModel;

class Course extends Model
{
    // ½ç˵һ¶Ô¶à¹ØÁªÒªÁì
    public function students()
    {
        return $this->hasMany('Student');
    }
}

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namespace appmodel;

use thinkModel;

class Student extends Model
{
    // ½ç˵·´Ïò¹ØÁªÒªÁì
    public function course()
    {
        return $this->belongsTo('Course');
    }
}

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// ÅÌÎʿγÌÐÅÏ¢£¬°üÀ¨ÆäÑ¡ÐÞѧÉúÐÅÏ¢
$course = Course::with(['students'])->find(1);

// ÅÌÎʿγÌÐÅÏ¢£¬Ö»°üÀ¨ÆäÑ¡ÐÞѧÉúÐÕÃûºÍÄêËêÐÅÏ¢
$course = Course::with(['students' => function($query){
    $query->field('name, age');
}])->find(1);

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namespace appmodel;

use thinkModel;

class Course extends Model
{
    // ½ç˵¶à¶Ô¶à¹ØÁªÒªÁì
    public function teachers()
    {
        return $this->belongsToMany('Teacher', 'course_teacher');
    }
}

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namespace appmodel;

use thinkModel;

class Teacher extends Model
{
    // ½ç˵·´Ïò¹ØÁªÒªÁì
    public function courses()
    {
        return $this->belongsToMany('Course', 'course_teacher');
    }
}

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// ÅÌÎʿγÌÐÅÏ¢£¬°üÀ¨ÆäÊÚ¿ÎÏÈÉúÐÅÏ¢
$course = Course::with(['teachers'])->find(1);

// ÅÌÎʿγÌÐÅÏ¢£¬Ö»°üÀ¨ÆäÊÚ¿ÎÏÈÉúÐÕÃûºÍÖ°³ÆÐÅÏ¢
$course = Course::with(['teachers' => function($query){
    $query->field('name, title');
}])->find(1);

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