Laravel request validation image required in create but not required in update

Question

ProductsRequest.php code:

public function rules()
{
    return [
        'name'          => 'required
                            |min:'.trans('validation_standards.names.min').'
                            |max:'.trans('validation_standards.names.max').'
                            |unique:products,name,'.$this -> product_id,


        'barcode'       => 'size:'.trans('validation_standards.barcode.size').'
                            |unique:products,barcode,'.$this -> product_id,

        'category_id'   => 'required
                            |exists:categories,id',

        'seasons_id'    => 'required
                            |exists:seasons,id',

                           // REQUIRED IMAGE ONLY IN STORE
        'image'         => 'required
                            |image|mimes:'.trans('validation_standards.images.extensions').'
                            |max:'.trans('validation_standards.images.file_size'),

        'description'   => 'nullable
                            |min:'.trans('validation_standards.descriptions.min').'
                            |max:'.trans('validation_standards.descriptions.max'),
    ];
}

These rules apply for both store and update methods.

Problem is:

I want the image to be required only on store and not required in update, since user can just update the product basic info without choosing a new image for the product every time he update the product.

What I have tried:

I have tried to create two different ProductsRequest one for store and other for update but I know that this achievement is not the best achievement because my code must be DRY.

Answer 1

You can do this in your ProductsRequest file;

public function rules()
{
    if(request()->isMethod('put')) // could be patch as well
    {
         // Update rules here - Don't require image here
return [
    'name' => 'required
              |min:'.trans('validation_standards.names.min').'
              |max:'.trans('validation_standards.names.max').'
              |unique:products,name,'.$this->product_id,
    'barcode' => 'size:'.trans('validation_standards.barcode.size').'
                 |unique:products,barcode,'.$this->product_id,

    'category_id'   => 'required|exists:categories,id',

    'seasons_id'    => 'required|exists:seasons,id',

                       // REQUIRED IMAGE ONLY IN STORE
    'image' => 'required|image|mimes:'.
                trans('validation_standards.images.extensions').'                         
                |max:'.trans('validation_standards.images.file_size'),
    'description' => 'nullable                        
                |min:'.trans('validation_standards.descriptions.min').'                      
                |max:'.trans('validation_standards.descriptions.max'),
];
    }else{
         // store rules here - require image here
         return [
    'name' => 'required
              |min:'.trans('validation_standards.names.min').'
              |max:'.trans('validation_standards.names.max').'
              |unique:products,name,'.$this->product_id,
    'barcode' => 'size:'.trans('validation_standards.barcode.size').'
                 |unique:products,barcode,'.$this->product_id,

    'category_id'   => 'required|exists:categories,id',

    'seasons_id'    => 'required|exists:seasons,id',

                       // REQUIRED IMAGE ONLY IN STORE
    'image' => 'image|mimes:'.
                trans('validation_standards.images.extensions').'                         
                |max:'.trans('validation_standards.images.file_size'),
    'description' => 'nullable                        
                |min:'.trans('validation_standards.descriptions.min').'                      
                |max:'.trans('validation_standards.descriptions.max'),
];
    }
}

}