firefly-iii/app/models/Budget.php

<?php

/**
 * Budget
 *
 * @property integer $id
 * @property \Carbon\Carbon $created_at
 * @property \Carbon\Carbon $updated_at
 * @property string $name
 * @property integer $user_id
 * @property string $class
 * @property-read \Illuminate\Database\Eloquent\Collection|\Limit[] $limits
 * @property-read \Illuminate\Database\Eloquent\Collection|\TransactionJournal[] $transactionjournals
 * @property-read \Illuminate\Database\Eloquent\Collection|\Transaction[] $transactions
 * @property-read \User $user
 * @method static \Illuminate\Database\Query\Builder|\Budget whereId($value) 
 * @method static \Illuminate\Database\Query\Builder|\Budget whereCreatedAt($value) 
 * @method static \Illuminate\Database\Query\Builder|\Budget whereUpdatedAt($value) 
 * @method static \Illuminate\Database\Query\Builder|\Budget whereName($value) 
 * @method static \Illuminate\Database\Query\Builder|\Budget whereUserId($value) 
 * @method static \Illuminate\Database\Query\Builder|\Budget whereClass($value) 
 */
class Budget extends Component
{
    protected $isSubclass = true;

    /**
     * @return \Illuminate\Database\Eloquent\Relations\HasMany
     */
    public function limits()
    {
        return $this->hasMany('Limit', 'component_id');
    }

    /**
     * @return \Illuminate\Database\Eloquent\Relations\BelongsToMany|\TransactionJournal
     */
    public function transactionjournals()
    {
        return $this->belongsToMany('TransactionJournal', 'component_transaction_journal', 'component_id');
    }

}