Delayed Job - undefined method `name' for nil:NilClass

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I'm struggling with this error. I've got a controller action like so:

def import
    InventoryItem.import_list(params[:file], current_vendor.id)
    redirect_to vendors_dashboard_path, notice: "Inventory Imported"
end

My class method:

class << self
    def import_list(file, vendor_id)
        vendor = Vendor.find(vendor_id)
        SmarterCSV.process(file.path, 
        {:key_mapping => { vendor.import_preference.brand_symbol => :brand,
        vendor.import_preference.product_symbol => :product,
        vendor.import_preference.price_symbol => :price,
        vendor.import_preference.upc_symbol => :upc}}) do |row|

        params = row.first.merge(:store_id => vendor.stores.first.id)
            inventory_item = InventoryItem.create(params)
        end
    end
    handle_asynchronously :import_list
end

When I try and execute, I get the undefined method error. This method works without calling handle_asynchronously and when I make this a normal self.import class method. What am I doing wrong here?

asked 3 mins ago

settheline

548

Delayed Job - undefined method `name' for nil:NilClass