Issue with Laravel model relationships - php

Question

I'm trying to retrieve all product categories with all their respective products, one product belongs to one product category and one product category can have many products.
When I retrieve productCategories I get the following error:
Illuminate \ Database \ QueryException (42S22)
SQLSTATE[42S22]: Column not found: 1054 Unknown column 'products.product_category_id' in 'where clause' (SQL: select * from `products` where `products`.`product_category_id` in (1, 2, 3))
This is my migrations file for product and categories:
<?php
use Illuminate\Support\Facades\Schema;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;
class ProductsAndCategories extends Migration
{
public function up()
{
//CREATE PRODUCT CATEGORIES TABLE
Schema::create('productcategories', function (Blueprint $table) {
$table->increments('id');
$table->string('title');
$table->string('description')->nullable();
$table->string('image')->nullable();
$table->timestamps();
});
// CREATE PRODUCTS TABLE
Schema::create('products', function (Blueprint $table) {
$table->increments('id');
$table->unsignedInteger('productcategory_id')->index();
$table->foreign('productcategory_id')->references('id')->on('productcategories');
$table->string('title');
$table->string('description')->nullable();
$table->string('body')->default('');
$table->string('image')->nullable()->default(config('globals.dummy_image'));
$table->boolean('isVisible')->default(true);
$table->integer('stockLeft')->default(0);
$table->decimal('halfPrice', 5,2)->default(0.00);
$table->decimal('fullPrice', 5,2)->default(0.00);
$table->decimal('finalPrice', 5,2)->default(0.00);
$table->timestamps();
});
}
public function down()
{
Schema::dropIfExists('products');
Schema::dropIfExists('productcategories');
}
}
And my two related models:
Product:
<?php
namespace App\Models;
use Illuminate\Database\Eloquent\Model;
class Product extends Model
{
protected $table = 'products';
public function productcategory()
{
return $this->belongsTo('App\Models\ProductCategory', 'productcategory_id');
}
}
ProductCategory:
<?php
namespace App\Models;
use Illuminate\Database\Eloquent\Model;
class ProductCategory extends Model
{
protected $table = 'productcategories';
public function products()
{
return $this->HasMany('App\Models\Product');
}
}

Answer 1

First of all you need to define right keyword for hasMany relation. Change HasMany to hasMany();
and Model look like this:-
<?php
namespace App\Models;
use Illuminate\Database\Eloquent\Model;
class Product extends Model
{
protected $table = 'products';
protected $primary_key = 'product_id';
public function productcategory()
{
return $this->belongsTo('App\Models\ProductCategory', 'productcategory_id');
}
}
and second model look like this: -
<?php
namespace App\Models;
use Illuminate\Database\Eloquent\Model;
class ProductCategory extends Model
{
protected $table = 'productcategories';
protected $primary_key = 'id';
public function products()
{
return $this->HasMany('App\Models\Product', 'id');
}
}
and Query will be look like this: -
$product_list = Product::with('productcategory')->get();
this query will give you all records and category of particular record.