krafthaus/bauhaus

<?php

namespace KraftHaus\Bauhaus\Field;

/**
 * This file is part of the KraftHaus Bauhaus package.
 *
 * (c) KraftHaus <hello@krafthaus.nl>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

use KraftHaus\Bauhaus\Field\BaseField;
use Illuminate\Support\Facades\View;
use Illuminate\Support\Str;
use Illuminate\Support\Facades\Input;

/**
 * Class BelongsToField
 * @package KraftHaus\Bauhaus\Field
 */
class BelongsToField extends RelationField
{

    /**
     * Render the field.
     *
     * @access public
     * @return mixed|string
     */
    public function render()
    {
        if ($this->getDisplayField() === null) {
            throw new \InvalidArgumentException(sprintf('Please provide a display field for the `%s` relation via the display(); method.', $this->getName()));
        }

        switch ($this->getContext()) {
            case BaseField::CONTEXT_LIST:
                $value = $this->getValue();
                return $value->{$this->getDisplayField()};
                break;

            case BaseField::CONTEXT_FILTER:
                $baseModel  = $this->getAdmin()->getModel();
                $baseModel  = new $baseModel;
                $primaryKey = $baseModel->getKeyName();

                $relatedModel = $baseModel->{$this->getName()}()->getRelated();

                $items = [];
                foreach ($relatedModel::all() as $item) {
                    $items[$item->{$primaryKey}] = $item->{$this->getDisplayField()};
                }

                $column = Str::singular($relatedModel->getTable()) . '_id';
                if (Input::has($column)) {
                    $this->setValue(Input::get($column));
                }

                return View::make('krafthaus/bauhaus::models.fields._belongs_to')
                    ->with('field', $this)
                    ->with('items', $items);
                break;

            case BaseField::CONTEXT_FORM:
                $baseModel  = $this->getAdmin()->getModel();
                $baseModel  = new $baseModel;
                $primaryKey = $baseModel->getKeyName();

                $relatedModel = $baseModel->{$this->getName()}()->getRelated();

                $items = [];
                foreach ($relatedModel::all() as $item) {
                    $items[$item->{$primaryKey}] = $item->{$this->getDisplayField()};
                }

                if ($this->getValue() !== null) {
                    $this->setValue($this->getValue()->{$primaryKey});
                }

                return View::make('krafthaus/bauhaus::models.fields._belongs_to')
                    ->with('field', $this)
                    ->with('items', $items);

                break;
        }

        return $this->getValue();
    }

}