undefined method `gsub' for nil:NilClass

[bilalmajeed-zz]

I followed the steps to get this up but I am getting the error

"undefined method `gsub' for nil:NilClass"

I've looked at the old closed issues but they seem to be no help, so I decided to ask u guy directly

Here is my setup

config/initializers/carrierwave.rb

CarrierWave.configure do |config|
  config.dropbox_app_key = ENV["APP_KEY"]
  config.dropbox_app_secret = ENV["APP_SECRET"]
  config.dropbox_access_token = ENV["ACCESS_TOKEN"]
  config.dropbox_access_token_secret = ENV["ACCESS_TOKEN_SECRET"]
  config.dropbox_user_id = ENV["USER_ID"]
  config.dropbox_access_type = "app_folder"
  config.cache_dir = "#{Rails.root}/tmp/uploads"
end

/app/uploaders/avatar_uploader.rb

class AvatarUploader < CarrierWave::Uploader::Base
  include CarrierWave::MiniMagick
  storage :dropbox

  def store_dir
    "profile_pics/"
  end

  process :resize_to_fit => [150, 150]

  def extension_white_list
    %w(jpg jpeg gif png)
  end
end

My controller

class ClassmatesController < ApplicationController
  def index
    @showNav = true
    @classmates = Classmate.all
  end

  def create
    @showNav = true
    @classmate = Classmate.new(params[:classmate])
    @classmate.avatar = params[:file]

    name = @classmate.name
    github = @classmate.githubProfile
    site = @classmate.website

    @classmate.githubProfile = ((github.split('//')[-1]).split('www.')[-1]).split('/')[-1]
    @classmate.website = ((site.split('//')[-1]).split('www.')[-1])

    respond_to do |format|
      if @classmate.save
        format.html { redirect_to action: "index"}
        format.json { render json: @classmate, status: :created, location: @classmate }
      else
        format.html { render action: "new" }
        format.json { render json: @classmate.errors, status: :unprocessable_entity }
      end
    end
  end
end

And the code is showing me that is it failing at:

if @classmates.save 

Please let me know anything I have been doing wrong, but I cant seem to fix this problem.

Thanks

[robin850]

Hi @bilalmajeed!

Did you set the environment variables to their proper value ? ENV is going to look at environment variables defined by your shell so you need to set their values somewhere.

Actually, this piece of code use environment variables because it's a wrong practice to store credentials as-is inside your configuration files but now you can rely on the config/secrets.yml feature to store them ; it didn't exist in the default Rails stack when it was written, the README should be updated.

[robin850]

See #7.

[bilalmajeed-zz]

thanks so much for the quick reply...i fixed it

[robin850]

No problem! :-)