Laravel 列表与下拉列表的关系

Question

我有两个 table：

课程

id
姓名
season_id
teacher_id
dates_id
描述 ...

course_dates

id
course_id
工作日
开始
停止 ...

前 table 是课程的基本内容。在第二个 table 中，我只存储课程的日期（即工作日 1 为星期一，开始 -> 开始时间和停止时间 -> 结束时间）。课程可以有多个日期。

现在我想为下拉列表创建一个列表，如下所示：

课程名称（日期，从-到）
相同的课程名称（另一天，从-到）
另一个课程名称（天，从-到）

我克服了一点辅助功能的那一天的名字。

如何使用访问器操作列表方法的参数？

感谢帮助！

课程模型

    <?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

    <?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

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

    return $weekday[$id];
}

Answer 1

如果我理解你的意思是这样的：

CourseDate 模型

public function getNameAndTimeAttribute(){
    return $this->course->name . ' ' . $this->attributes['start'] . ' - ' . $this->attributes['stop'];
}

然后：

$dropdown = CourseDate::with('course')->get()->lists('nameAndTime', 'id');

Laravel 列表与下拉列表的关系

Laravel lists with relationship for a dropdown

accessor

laravel

eloquent

课程

course_dates