```ruby
class MembersController < ApplicationController
  before_action :set_member,                only: :show
  before_action :redirect_without_member,   only: :show

  def index
    @members = member_scope.page(params[:page]).per( 40 )
  end

  def show
    @posts = @member.posts.current.not_research.includes(topic: :forum).order(created_at: :desc)
    @research_topics = @member.research_topics.approved.includes(:user, topic: [:forum, :posts]).order(created_at: :desc)
    @events = (@posts + @research_topics).sort_by(&:created_at).reverse!
  end

  # GET /search.json?q=QUERY
  def search
    render json: member_scope.where("users.forum_name ~* ?", "(\\m#{params[:q].to_s.gsub(/[^a-zA-Z0-9]/, '')})").limit(10).pluck(:forum_name)
  end

  private

    def set_member
      @member = User.current.find_by_forum_name(params[:forum_name])
    end

    def redirect_without_member
      empty_response_or_root_path(members_path) unless @member
    end

    def member_scope
      User.current.where("users.id IN (SELECT posts.user_id FROM posts WHERE posts.status IN (?) and posts.deleted = ?)", ['pending_review', 'approved'], false).where.not(forum_name: [nil, '']).order("LOWER(forum_name)")
    end

end
```

Allow members to be found case insensitively
user
```ruby
class MembersController < ApplicationController
  before_action :set_member,                only: :show
  before_action :redirect_without_member,   only: :show

  def index
    @members = member_scope.page(params[:page]).per( 40 )
  end

  def show
    @posts = @member.posts.current.not_research.includes(topic: :forum).order(created_at: :desc)
    @research_topics = @member.research_topics.approved.includes(:user, topic: [:forum, :posts]).order(created_at: :desc)
    @events = (@posts + @research_topics).sort_by(&:created_at).reverse!
  end

  # GET /search.json?q=QUERY
  def search
    render json: member_scope.where("users.forum_name ~* ?", "(\\m#{params[:q].to_s.gsub(/[^a-zA-Z0-9]/, '')})").limit(10).pluck(:forum_name)
  end

  private

    def set_member
      @member = User.current.where("LOWER(users.forum_name) = ?", params[:forum_name].to_s.downcase).first
    end

    def redirect_without_member
      empty_response_or_root_path(members_path) unless @member
    end

    def member_scope
      User.current.where("users.id IN (SELECT posts.user_id FROM posts WHERE posts.status IN (?) and posts.deleted = ?)", ['pending_review', 'approved'], false).where.not(forum_name: [nil, '']).order("LOWER(forum_name)")
    end

end
```
assistant