gurl_o/plugins/tps/birzha/components/Offers.php

<?php namespace TPS\Birzha\Components;

use Cms\Classes\ComponentBase;
use TPS\Birzha\Models\Category;
use TPS\Birzha\Models\Product;
use TPS\Birzha\Models\City;
use Session;
use DB;

class Offers extends ComponentBase
{
    /*
    * sort order parametr in a url string
    */
    public $sortParam = '';
    public $offers;
    public $category;
    public $categories;
    public $cities;

    public function componentDetails()
    {
        return [
            'name'        => 'Offers List',
            'description' => 'List of offers'
        ];
    }

    public function defineProperties()
    {
        return [
            'categorySlug' => [
                'title' => 'Select by category :slug',
                'description' => 'Select by category',
                'type' => 'string',
                'default' => ''
            ],
            'vendor_id' => [
                'title' => 'Select by vendor :id',
                'description' => 'Select by vendor',
                'type' => 'string',
                'default' => ''
            ],
            'perPage' => [
                'title' => 'Number of offers',
                'description' => 'How many offers do you want to display',
                'default' => 1,
                'validationPattern' => '^[0-9]+$',
                'validationMessage' => 'Only numbers allowed'
            ],
            'sortOrder' => [
                'title' => 'Sort offers',
                'description' => 'How to sort offers',
                'type' => 'dropdown',
                'default' => 'desc'
            ],
            'productSlug' => [
                'title' => 'Product Slug',
                'description' => 'Similar offers (the same product)',
                'type' => 'string',
                'default' => ''
            ],
            'offerId' => [
                'title' => 'Offer id',
                'description' => 'Offer id',
                'type' => 'string',
                'default' => ''
            ]
        ];
    }

    public function getSortOrderOptions() {
        return [
            'asc' => 'Created date (ascending)',
            'desc' => 'Created date (descending)'
        ];
    }

    public function onRun() {
        $this->offers = $this->loadOffers();
        $this->category = $this->getCategory();
        $this->categories = $this->getCategories();
        $this->cities = $this->getCities();
    }

    protected function getCategory(){
        $cSlug = $this->property('categorySlug');
        $category = Category::transWhere('slug', $cSlug, Session::get('rainlab.translate.locale'))->first();
        return $category;
    }

    protected function getCategories(){
        $categories = Category::all();
        return $categories;
    }

    protected function getCities(){
        $cities = City::all();
        return $cities;
    }

    protected function filterOffers(){
        return "filterOffers";
    }

    protected function loadOffers() {
        $sortOrderParam = strtolower(\Input::get('sort_order'));
        // protect from sql injection
        if($sortOrderParam != 'asc' && $sortOrderParam != 'desc') {
            $sortOrder = $this->property('sortOrder');
        } else {
            $sortOrder = $sortOrderParam;
            $this->sortParam = $sortOrderParam;
        }
        
        $cSlug = $this->property('categorySlug');
        $vendorId = $this->property('vendor_id');
        $perPage = $this->property('perPage');
        $productSlug = $this->property('productSlug');
        $offerId = $this->property('offerId');

        $query = Product::where('status', 'approved')
            ->orderBy('ends_at', $sortOrder);

        if($cSlug != '') {
            $category = Category::transWhere('slug', $cSlug, Session::get('rainlab.translate.locale'))->first();
            if($category) {
                $query = $category->products()
                    ->where('status','approved')
                    ->orderBy('updated_at', $sortOrder);
            } else {
                $query = null;
            }
        }
        if($productSlug != '' && $offerId != '') { // fetch offers with similar products
            $product = Product::transWhere('slug', $productSlug, Session::get('rainlab.translate.locale'))->first();
            if($product) {
                $category = $product->categories->first();
                $query = $category->products()
                    ->where('id','!=',$offerId)
                    ->where('status','approved')
                    ->orderBy('updated_at', $sortOrder);
            } else {
                $query = null;
            }
        }
        if($vendorId != '') {
            $query = Product::where('vendor_id', $vendorId)->where('status', 'approved')->orderBy('updated_at', $sortOrder);
        }

        return $query ? $query->paginate($perPage) : null;
    }
}