growstuff/app/controllers/forums_controller.rb

class ForumsController < ApplicationController
  load_and_authorize_resource

  # GET /forums
  # GET /forums.json
  def index
    @forums = Forum.all

    respond_to do |format|
      format.html # index.html.erb
      format.json { render json: @forums }
    end
  end

  # GET /forums/1
  # GET /forums/1.json
  def show
    @forum = Forum.find(params[:id])

    respond_to do |format|
      format.html # show.html.erb
      format.json { render json: @forum }
    end
  end

  # GET /forums/new
  # GET /forums/new.json
  def new
    @forum = Forum.new

    respond_to do |format|
      format.html # new.html.erb
      format.json { render json: @forum }
    end
  end

  # GET /forums/1/edit
  def edit
    @forum = Forum.find(params[:id])
  end

  # POST /forums
  # POST /forums.json
  def create
    @forum = Forum.new(forum_params)

    respond_to do |format|
      if @forum.save
        format.html { redirect_to @forum, notice: 'Forum was successfully created.' }
        format.json { render json: @forum, status: :created, location: @forum }
      else
        format.html { render action: "new" }
        format.json { render json: @forum.errors, status: :unprocessable_entity }
      end
    end
  end

  # PUT /forums/1
  # PUT /forums/1.json
  def update
    @forum = Forum.find(params[:id])

    respond_to do |format|
      if @forum.update(forum_params)
        format.html { redirect_to @forum, notice: 'Forum was successfully updated.' }
        format.json { head :no_content }
      else
        format.html { render action: "edit" }
        format.json { render json: @forum.errors, status: :unprocessable_entity }
      end
    end
  end

  # DELETE /forums/1
  # DELETE /forums/1.json
  def destroy
    @forum = Forum.find(params[:id])
    @forum.destroy

    respond_to do |format|
      format.html { redirect_to forums_url, notice: 'Forum was successfully deleted' }
      format.json { head :no_content }
    end
  end

  private

  def forum_params
    params.require(:forum).permit(:description, :name, :owner_id, :slug)
  end
end