Question 16540 in Laravel Question posted in
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Laravel: Column 'category_slug' cannot be null

SQLSTATE[23000]: Integrity constraint violation: 1048 Column ‘category_slug’ cannot be null (SQL: update products set category_slug = ?, products.updated_at = 2022-12-23 12:06:26 where id = 1)

How I get product category_slug colmun from category slug table.

Categories Table:

|id|name|slug |
|4 |Cat4|cat-4|
|5 |Cat5|cat-5|
|6 |Cat6|cat-6|

Products Table

|id|name|category_id|category_slug|
|1 |USDT|4 |cat-4 |
|2 |BTCH|5 |cat-5 |
|3 |EURT|6 |cat-6 |

Product Controller (Update Method)

    public function update(Request $request)
    {
        $validator = Validator::make($request->all(), [
            'name' => 'required|string|max:190',
            'price' => 'required',
            'category_id' => 'required',
        ])->validate();

        $code=Product::find($request->id);
        $code->name=$request->name;
        $code->category_id=$request->category_id;
        $code->category_slug=$request->category_slug;
    $code->update();

        return redirect()->back()->with('success',__('Product has been updated'));
    }

`

Product Model

`

class Product extends Model
{
    use HasFactory;

    public function category()
    {
        return $this->hasOne(Category::class,'id','category_id');
    }

`

I GET THIS ERROR

SQLSTATE[23000]: Integrity constraint violation: 1048 Column ‘category_slug’ cannot be null (SQL: update products set category_slug = ?, products.updated_at = 2022-12-23 12:06:26 where id = 1)

Tags:

3

Answers


  1. 0

    Change your migration.

    public function up()
{
    Schema::table('products', function (Blueprint $table) {
        $table->string('category_slug')->nullable()->change();
    });
}

    It seems that you are not sending any value to the category_slug column while updating the record. The column must have a nullable constraint.

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  2. 0

    The problem lies here :

    $code->category_slug=$request->category_slug;

    It seems that $request->category_slug is null/undefined. If you are sure sending it from the frontend via an input make sure it has the right name attribute name="category_slug"

    If however, you don’t send it from frontend you should use slug helper to generate it from a string you chose, example:

    $code->category_slug= Str::slug($request->name . '-' .$request->category_id);

    This will generate a slug from the name and id combined.

    EDIT: If you want to get the current Product category slug you can use it like so:

    $code->category_slug=$code->category->category_slug;

    You might need to use $code->save() instead of update()

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  3. 0

    I think you should not add the category_slug to your products table

    you already have all the information you need about the product’s category when you added the category_id to the products table

    to get the category_slug from the product

    you can do something like this

    Product::with('category')->find(1)->category->slug
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