Laravel 5 collection issue: Where not equal to - php

Question

I am currently working on a modal where a user can insert an excel file. The task of the system is to upload and/or add a new database record if the records are new or identical to what exists in the database. BUT it also needs a delete function for getting rid of those records where the slug column is not identical to the name column.
At the moment I am using Laravel 5.3, and this is my controller as it is now:
<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use App\Product;
use App\Http\Requests;
use Illuminate\Support\Facades\DB;
use Input;
use Maatwebsite\Excel\Facades\Excel;
class ProductsController extends Controller {
public function importExcel(Request $request) {
if (Input::hasFile('productFile')) {
$path = Input::file('productFile')->getRealPath();
$checkbox = Input::get('productCheckbox');
$data = Excel::load($path, function($reader) {
})->get();
if (!empty($data) && $data->count()) {
foreach ($data as $key => $value) {
$product = Product::all()->where('slug', $value->slug)->first();
$product_false = Product::all()->where('slug', '!=' , 'name')->get();
if ($product_false !== null){
//delete row if slug does not matches name
dd($product_false);
}
The dd above returns all products, so the collection query is not working properly (see below for the raw SQL that I am trying to run in this collection)
if ($product !== null) {
//update row if exist
$product->name = $value->name;
$product->description = $value->description;
$product->price = $value->price;
$product->save();
} else {
//add new row if not exist
$product = new Product;
$product->slug = $value->slug;
$product->name = $value->name;
$product->description = $value->description;
$product->price = $value->price;
$product->save();
}
}
header("Location: /products");
}
}
}
}
This is the Product model:
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Product extends Model
{
/**
* The attributes that are mass assignable.
*
* #var array
*/
protected $fillable = [
'slug', 'name', 'description', 'price',
];
}
Here is the PHPMyAdmin raw SQL (which works) that I basically am looking for to use in the collection:
SELECT * FROM `products` WHERE `slug` != `name`
I hope someone can help me out from this pit. I have been sailing the waves of the internet for about 12 hours now just to get this done.
~ nitsuJ

Answer 1

Collections, eloquent and query builder are not the same. Collection provide a bunch of methods to work on arrays, rather then on the database or model.
In collection context whereNot() is not available.
but the same function can be achieved through whereNotIn('key', [value])
collect([
[
'name' => 'foo',
'rank' => 2
],[
'name' => 'bar',
'rank' => 3
],[
'name' => 'foobar',
'rank' => 4
],
])->whereNotIn('rank', [4])
same as where rank not in (4)

Answer 2

Change
$product = Product::all()->where('slug', $value->slug)->first();
$product_false = Product::all()->where('slug', '!=' , 'name')->get();
Into
$product = Product::where('slug', $value->slug)->first();
$product_false = Product::where('slug', '!=' , 'name')->get();

Answer 3

Try this
$product = Product::where('slug', $value->slug)->first();
$product_false = Product::whereRaw('slug != name')->get();
Simple where won't work as it compares products.slug with "name"(string).

Answer 4

I managed to solve it.
$data = Excel::load($path, function($reader) {
$importedSlugs = $data->select(array('slug'))->toArray();
//collection of imported slugs
$collectionOfImportedSlugs = collect($importedSlugs)->flatten()->all();
//get all product slugs
$productSlugs = Product::all()->pluck('slug');
//get all different slugs!
$diffSlugsArray = $productSlugs->diff($collectionOfImportedSlugs)->all();
//dd($diffSlugsArray);
foreach ($diffSlugsArray as $diffSlug) {
$product_false = Product::all()->where('slug', $diffSlug)->first();
echo $product_false->slug . 'has been deleted!';
$product_false->delete();
}
})->get();