Initial work on data table responder

Author: DivineOmega

.gitignore

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+composer.lock
+vendor/
+.idea

README.md

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+# Laravel API for React Dynamic Data Table
+
+*Work in progress*
+
+This package provides a Laravel API endpoint responder for the 
+[React Dynamic Data Table](https://github.com/langleyfoxall/react-dynamic-data-table) 
+component.
+
+## Installation
+
+```bash
+composer require langleyfoxall/react-dynamic-data-table-laravel-api
+```
+
+## Usage
+
+Example syntax:
+
+```php
+use App\User;
+use Illuminate\Http\Request;
+use LangleyFoxall\ReactDynamicDataTableLaravelApi\DataTableResponder;
+
+class UsersController extends Controller
+{
+	public function dataTable(Request $request)
+	{
+		return (new DataTableResponder(User::class, $request))
+			->setPerPage(10)
+			->respond();
+	}
+}
+
+```

composer.json

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+{
+    "name": "langleyfoxall/react-dynamic-data-table-laravel-api",
+    "description": "Provides a Laravel API endpoint responder for the `react-dynamic-data-table` component.",
+    "require": {
+        "php": "^7.0.0",
+        "illuminate/http": "^5.1",
+        "illuminate/database": "^5.1",
+        "langleyfoxall/helpers-laravel": "^1.10"
+    },
+    "autoload": {
+        "psr-4": {
+            "LangleyFoxall\\ReactDynamicDataTableLaravelApi\\": "src/"
+        }
+    },
+    "license": "LGPL-3.0-only"
+}

src/DataTableResponder.php

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+<?php
+namespace LangleyFoxall\ReactDynamicDataTableLaravelApi;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Query\Builder;
+use Illuminate\Http\Request;
+
+/**
+ * Class DataTableResponder
+ * @package LangleyFoxall\ReactDynamicDataTableLaravelApi
+ */
+class DataTableResponder
+{
+    /**
+     * @var Model
+     */
+    private $model;
+
+    /**
+     * @var Request
+     */
+    private $request;
+
+    /**
+     * @var int
+     */
+    private $perPage = 15;
+
+    /**
+     * DataTableResponder constructor.
+     *
+     * @param $className
+     * @param Request $request
+     */
+    public function __construct($className, Request $request)
+    {
+        if (!class_exists($className)) {
+            throw new \InvalidArgumentException('Provided class does not exist.');
+        }
+
+        if (!$className instanceof Model) {
+            throw new \InvalidArgumentException('Provided class is not an Eloquent model.');
+        }
+
+        $this->model = new $className();
+        $this->request = $request;
+    }
+
+    /**
+     * Sets the number of records to return per page.
+     *
+     * @param int $perPage
+     * @return DataTableResponder
+     */
+    public function setPerPage($perPage)
+    {
+        $this->perPage = $perPage;
+        return $this;
+    }
+
+    /**
+     * Builds the Eloquent query based on the request.
+     *
+     * @param Request $request
+     * @return \Illuminate\Database\Eloquent\Builder
+     */
+    private function buildQuery(Request $request)
+    {
+        $orderByField = $request->get('orderByField');
+        $orderByDirection = $request->get('orderByDirection');
+
+        $query = $this->model->query();
+
+        if ($orderByField && $orderByDirection) {
+            $query->orderBy($orderByField, $orderByDirection);
+        }
+
+        return $query;
+    }
+
+    /**
+     * @param Builder $query
+     * @return \Illuminate\Contracts\Pagination\LengthAwarePaginator
+     */
+    private function paginateQuery(Builder $query)
+    {
+        return $query->paginate($this->perPage);
+    }
+
+    /**
+     * @return \Illuminate\Http\JsonResponse
+     */
+    public function respond()
+    {
+        $query = $this->buildQuery($this->request);
+        $results = $this->paginateQuery($query);
+
+        return DataTableResponse::success($results)->json();
+    }
+}

src/DataTableResponse.php

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+<?php
+namespace LangleyFoxall\ReactDynamicDataTableLaravelApi;
+
+use LangleyFoxall\Helpers\ApiResponse;
+
+class DataTableResponse extends ApiResponse
+{
+
+}