snipe-it/app/controllers/admin/CategoriesController.php

<?php namespace Controllers\Admin;

use AdminController;
use Input;
use Lang;
use Category;
use Redirect;
use Setting;
use DB;
use Sentry;
use Str;
use Validator;
use View;

class CategoriesController extends AdminController
{
    /**
     * Show a list of all the categories.
     *
     * @return View
     */

    public function getIndex()
    {
        // Grab all the categories
        $categories = Category::orderBy('created_at', 'DESC')->paginate(Setting::getSettings()->per_page);

        // Show the page
        return View::make('backend/categories/index', compact('categories'));
    }


    /**
     * Category create.
     *
     * @return View
     */
    public function getCreate()
    {
        // Show the page
        return View::make('backend/categories/edit')->with('category',new Category);
    }


    /**
     * Category create form processing.
     *
     * @return Redirect
     */
    public function postCreate()
    {

        // create a new model instance
        $category = new Category();
        
        $validator = Validator::make(Input::all(), $category->rules);

        if ($validator->fails())
        {
            // The given data did not pass validation            
            return Redirect::back()->withInput()->withErrors($validator->messages());
        }
        else{

            // Update the category data
            $category->name            = e(Input::get('name'));
            $category->user_id          = Sentry::getId();

            // Was the asset created?
            if($category->save()) {
                // Redirect to the new category  page
                return Redirect::to("admin/settings/categories")->with('success', Lang::get('admin/categories/message.create.success'));
            }
        } 

        // Redirect to the category create page
        return Redirect::to('admin/settings/categories/create')->with('error', Lang::get('admin/categories/message.create.error'));


    }

    /**
     * Category update.
     *
     * @param  int  $categoryId
     * @return View
     */
    public function getEdit($categoryId = null)
    {
        // Check if the category exists
        if (is_null($category = Category::find($categoryId))) {
            // Redirect to the blogs management page
            return Redirect::to('admin/settings/categories')->with('error', Lang::get('admin/categories/message.does_not_exist'));
        }

        // Show the page
        //$category_options = array('' => 'Top Level') + Category::lists('name', 'id');

        $category_options = array('' => 'Top Level') + DB::table('categories')->where('id', '!=', $categoryId)->lists('name', 'id');
        return View::make('backend/categories/edit', compact('category'))->with('category_options',$category_options);
    }


    /**
     * Category update form processing page.
     *
     * @param  int  $categoryId
     * @return Redirect
     */
    public function postEdit($categoryId = null)
    {
        // Check if the blog post exists
        if (is_null($category = Category::find($categoryId))) {
            // Redirect to the blogs management page
            return Redirect::to('admin/categories')->with('error', Lang::get('admin/categories/message.does_not_exist'));
        }


        // get the POST data
        $new = Input::all();

        // attempt validation       
        $validator = Validator::make(Input::all(), $category->validationRules($categoryId));
       

        if ($validator->fails())
        {
            // The given data did not pass validation
            return Redirect::back()->withInput()->withErrors($validator->messages());
        }
        // attempt validation
        else {

            // Update the category data
            $category->name            = e(Input::get('name'));

            // Was the asset created?
            if($category->save()) {
                // Redirect to the new category page
                return Redirect::to("admin/settings/categories")->with('success', Lang::get('admin/categories/message.update.success'));
            }
        } 

        // Redirect to the category management page
        return Redirect::to("admin/settings/categories/$categoryID/edit")->with('error', Lang::get('admin/categories/message.update.error'));

    }

    /**
     * Delete the given category.
     *
     * @param  int  $categoryId
     * @return Redirect
     */
    public function getDelete($categoryId)
    {
        // Check if the blog post exists
        if (is_null($category = Category::find($categoryId))) {
            // Redirect to the blogs management page
            return Redirect::to('admin/settings/categories')->with('error', Lang::get('admin/categories/message.not_found'));
        }


        if ($category->has_models() > 0) {

            // Redirect to the asset management page
            return Redirect::to('admin/settings/categories')->with('error', Lang::get('admin/categories/message.assoc_users'));
        } else {

            $category->delete();

            // Redirect to the locations management page
            return Redirect::to('admin/settings/categories')->with('success', Lang::get('admin/categories/message.delete.success'));
        }


    }



}