关于 eloquent：Laravel 列表与下拉关系

Laravel lists with relationship for a dropdown

我有两张桌子：

课程

ID
名称
季节ID
教师编号
日期ID
描述
...

course_dates

ID
course_id
工作日
开始
停止
...

第一张表是课程的基本内容。在第二个表中，我只存储课程的日期(即星期一的工作日 1，开始 -> 开始和停止的时间 -> 结束)。课程可以有多个日期。

现在我想为这样的下拉列表创建一个列表：

课程名称(天，从到)
相同的课程名称(另一天，从到到)
另一个课程名称(天，从到到)

我完成一个小辅助函数的那一天的名称。

如何使用访问器操作列表方法的参数？

感谢您的帮助！

课程模型

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<?php

class Course extends \\Eloquent {

protected $guarded = ['id', 'created_at', 'updated_at'];

//Relationship Holidays
public function holidays()
{
return $this->hasMany('Holiday');
}

//Relationship Teacher
public function teacher()
{
return $this->belongsTo('Teacher');
}

//Relationship User
public function bookings()
{
return $this->hasMany('Booking');
}

//Relationship Dates
public function dates()
{
return $this->hasMany('Dates');
}

//Accessor for Dates
public function getWeekdayAttribute()
{
//???
}

//Validation Rules
public static $rules = [
'name' => 'required',
'teacher_id' => 'required',
'description' => 'required',
'room' => 'required',
'price' => array('required', 'regex:/^\\d*(\\,\\d{2})?$/'),
'maxuser' => 'required|numeric',
'target' => 'required'
];

//Custom Attribute Names
public static $names = [
'name' => 'Kursname',
'teacher_id' => 'Kursleiter',
'description' => 'Beschreibung',
'room' => 'Raum/Ort',
'price' => 'Preis',
'maxuser' => 'Max. Anzahl Teilnehmer',
'target' => 'Zielgruppe'
];

//Change Price Format Get
public function getPriceAttribute($price)
{
return number_format($price, 2, ',', '');
}

//Change Price Format Set
public function setPriceAttribute($price)
{
$this->attributes['price'] = str_replace(',', '.', $price);
}

//Unserialize Target Get
public function getTargetAttribute($target)
{
return unserialize($target);
}

//Serialize Target Set
public function setTargetAttribute($target)
{
$this->attributes['target'] = serialize($target);
}
}

日期模型

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<?php

class Dates extends \\Eloquent {

protected $guarded = ['id', 'created_at', 'updated_at'];

protected $table = 'course_dates';

public function courses()
{
return $this->belongsTo('Course')->orderBy('name');
}

//Validation Rules
public static $rules = [
'weekday' => 'required',
'start' => 'required|date_format:H:i',
'stop' => 'required|date_format:H:i'
];

//Custom Attribute Names
public static $names = [
'weekday' => 'Wochentag',
'start' => 'Von',
'stop' => 'Bis'
];

}

辅助函数

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//Display Weekday
function showWeekday($id)
{
$weekday = array(
'1' => 'Montag',
'2' => 'Dienstag',
'3' => 'Mittwoch',
'4' => 'Donnerstag',
'5' => 'Freitag',
'6' => 'Samstag',
'0' => 'Sonntag'
);

return $weekday[$id];
}