takashyx/slackboard

class ChannelsController < ApplicationController
  helper_method :sort_column, :sort_direction
  before_action :set_channel, only: [:show, :edit, :update, :destroy]

  # GET /channels
  # GET /channels.json
  def index
    @channels = Channel.all.order(sort_column + ' ' + sort_direction)
  end

  # GET /channels/1
  # GET /channels/1.json
  def show
  end

  # GET /channels/new
  def new
    @channel = Channel.new
  end

  # GET /channels/1/edit
  def edit
  end

  # POST /channels
  # POST /channels.json
  def create
    @channel = Channel.new(channel_params)

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

  # PATCH/PUT /channels/1
  # PATCH/PUT /channels/1.json
  def update
    respond_to do |format|
      if @channel.update(channel_params)
        format.html { redirect_to @channel, notice: 'Channel was successfully updated.' }
        format.json { render :show, status: :ok, location: @channel }
      else
        format.html { render :edit }
        format.json { render json: @channel.errors, status: :unprocessable_entity }
      end
    end
  end

  # DELETE /channels/1
  # DELETE /channels/1.json
  def destroy
    @channel.destroy
    respond_to do |format|
      format.html { redirect_to channels_url, notice: 'Channel was successfully destroyed.' }
      format.json { head :no_content }
    end
  end

  private
    # Use callbacks to share common setup or constraints between actions.
    def set_channel
      @channel = Channel.find(params[:id])
    end

    # Never trust parameters from the scary internet, only allow the white list through.
    def channel_params
      params.require(:channel).permit(:ch_id, :name, :created, :creator, :is_archived, :num_members, :topic_value, :topic_creator, :topic_last_set, :purpose_value, :purpose_creator, :purpose_last_set)
    end

    # sort parameter check
    def sort_direction
       %w[asc desc].include?(params[:direction]) ? params[:direction] : "asc"
    end

    #sort index
    def sort_column
      Channel.column_names.include?(params[:sort]) ? params[:sort] : "name"
    end
end