pollux/app/AccountType.php

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class AccountType extends Model
{
    /**************************************************************************
     * DIRECT RELATIONS                                                       *
     **************************************************************************/
    
    /**
     * Get the account class of the account type.
     *
     * @return Illuminate\Database\Eloquent\Relations\BelongsTo
     */
    public function accountClass()
    {
        return $this->belongsTo('App\AccountClass');
    }

    /**************************************************************************
     * INDIRECT RELATIONS                                                     *
     **************************************************************************/

    /**
     * Get the IO-type of the account type.
     *
     * @return Illuminate\Database\Eloquent\Relations\BelongsTo
     */
    public function ioType()
    {
        return $this->accountClass->ioType();
    }

    /*
     * Get all account types which are expeditures.
     *
     * @return Illuminate\Database\Eloquent\Collection
     */
    public static function expeditures()
    {
        return AccountType::whereHas('accountClass', function ($query) {
            $query->whereHas('ioType', function ($query) {
                $query->where('i_o_types.name', 'Ausgabe');
            });
        })->get();
    }

    /*
     * Get all account types which are incomes.
     *
     * @return Illuminate\Database\Eloquent\Collection
     */
    public static function incomes() {
        return AccountType::whereHas('accountClass', function ($query) {
            $query->whereHas('ioType', function ($query) {
                $query->where('i_o_types.name', 'Einnahme');
            });
        })->get();
    }
    
    /**************************************************************************
     * INDIRECT PROPERTIES                                                    *
     **************************************************************************/
    
    /**
     * Returns the name and number of the account-type as string.
     *
     * @return string
     */
    public function numberAndName()
    {
        return $this->number . ' - ' . $this->name;
    }
}