an-exercise-in-refactoring-large-methods-in-ruby-2

example-1.rb

...
  def update
    if (params[:user][:password].blank? && params[:user][:password_confirmation].blank?)
      params[:user].delete(:password)
      params[:user].delete(:password_confirmation)
    end

    if params[:user][:photo_attributes]
      Photos::Manipulation.update_resource_photo(current_user.photo || Photo, params[:user][:photo_attributes], current_user)
      current_user.photo.try(:reload)
    end

    if current_user.photo.nil? || current_user.photo.cropped?
      update! do |success, failure|
        @daily_snapshot = @user.daily_snapshots.new_to_old.first
        failure.html { render :basics }
        success.html {
          flash.notice = 'successfully updated'
          if @user.basics? || params[:next_screen] == 'accounts_user'
            sign_in(@user, :bypass => true) if (@user.valid_password?(params[:user][:password]) && params[:user][:password] == params[:user][:password_confirmation] && !@user.partner_editor?)
            redirect_to basics_user_path(@user) and return if @user.complete? && !@user.partner_editor?
            if @user.partner_editor?
              redirect_to user_path(@user.invited_by_id)
            else
              redirect_to accounts_user_path(@user)
            end
          elsif @user.interests? && params[:next_screen] == 'show_user'
            @user.complete unless request.xhr?
            redirect_to user_path(@user)
          else
            redirect_to interests_user_path(@user) and return if @user.complete? && params[:next_screen] == 'show_user'
            redirect_to basics_user_path(@user) and return if @user.complete? && params[:next_screen] == 'accounts_user'
            redirect_to user_path(@user)
          end
        }
      end
    else
      render :basics
    end
  end
...