"把相同性質的東西，歸成一群"

現在 girb 資料有這 8 個分類
Dead Programmer
Successful Programmer
Famous Programmer
Working Programmer
Average Programmer
Amateur Programmer
Unknown Programmer
Bad Programmer

來做個過濾器吧

app/views/layouts/applicaton.html.erb



  
    <title>Girbling</title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link href="//maxcdn.bootstrapcdn.com/font-awesome/4.2.0/css/font-awesome.min.css" rel="stylesheet">
    <%= stylesheet_link_tag    'application', media: 'all', 'data-turbolinks-track' => true %>
    <%= javascript_include_tag 'application', 'data-turbolinks-track' => true %>
    <%= csrf_meta_tags %>
  
  
    <!-- start of menu -->
    <div class = "navbar navbar-inverse navbar-static-top">
      <div class = "container">
        <a href="#" class = "navbar-brand active">Girb</a>
        <button class = "navbar-toggle" data-toggle = "collapse" data-target = ".navHeaderCollapse">
        <span class = "icon-bar"></span>
        <span class = "icon-bar"></span>
        <span class = "icon-bar"></span>
        </button>
        <div class = "collapse navbar-collapse navHeaderCollapse">
          <ul class="nav navbar-nav navbar-right">

           
            <li class = "dropdown">
              <a href="#" class="dropdown-toggle" data-toggle="dropdown">Fun1<b class="caret"></b></a>
              <ul class = "dropdown-menu">
                <li><%= link_to "Dead", girbs_path(level_cd: "0") %></li>
                <li><%= link_to "Successful", girbs_path(level_cd: "1") %></li>
                <li><%= link_to "Famous", girbs_path(level_cd: "2") %></li>
                <li><%= link_to "Working", girbs_path(level_cd: "3") %></li>
                <li><%= link_to "Average", girbs_path(level_cd: "4") %></li>
                <li><%= link_to "Amateur", girbs_path(level_cd: "5") %></li>
                <li><%= link_to "Unknown", girbs_path(level_cd: "6") %></li>
                <li><%= link_to "Bad", girbs_path(level_cd: "7") %></li>
              </ul>
            </li>


            <li class = "dropdown">
              <a href="#" class="dropdown-toggle" data-toggle="dropdown">Fun2<b class="caret"></b></a>
              <ul class = "dropdown-menu">
                <li><a href="#">Like</a></li>
                <li><a href="#">Love</a></li>
                <li><a href="#">Hate</a></li>
                <li><a href="#">Love</a></li>
              </ul>
            </li>


            <li><a href="#">Fun3</a></li>
            <li><a href="#">Fun4</a></li>
          </ul>
        </div>
      </div>
    </div>
    <!-- end of menu -->

    <%= yield %>
    
    <!-- start of footer -->
    <div class = "navbar navbar-default navbar-fixed-bottom">
      <div class = "container">
        
        <sapn class = "navbar-text">Site Built By Hazetodo  </span>
        <%= link_to "Bilink", girbs_path, :class => "navbar-btn btn-danger btn btn-sm" %>
        <%= link_to new_girb_path, :class => "navbar-btn btn btn-primary btn-sm " do %>
        <i class=" fa fa-plus fa-sm"></i> New
        <% end %>
        <%= link_to raw('<i class="fa fa-plus fa-sm"></i> New'), new_girb_path, :class => "navbar-btn btn btn-warning btn-sm" %>
        
      </div>
    </div>
    <!-- end of footer -->
  






app/views/girbs/index.html.erb

<div class="container">
  <h1>Index Page of Girb ( <%= @girbs.count %> ) 
    <% if @girbs.count != Girb.all.count %>( Filter: <%= @girbs.first.level %> ) <% end %></h1>
  <div>
    <span class="pull-right">
    <%= link_to girbs_path(tab: "asc") do %>

    <i class="fa fa-sort-alpha-asc"></i>
    <% end %>
    <%= link_to girbs_path(tab: "desc") do %>
    <i class="fa fa-sort-alpha-desc"></i>
    <% end %> 
    <% if @at_like == nil %>
      <%= link_to like_asc_girbs_path do %>
      <i class="fa fa-child"></i>
      <% end %>
    <% elsif @at_like %>
      <%= link_to like_asc_girbs_path do %>
      <i class="fa fa-male" style="color:blue"></i>
      <% end %>
    <% else %>
      <%= link_to like_desc_girbs_path do %>
      <i class="fa fa-female" style="color:red"></i>
      <% end %>
    <% end %>
    </span>
  </div>
  <%= form_tag(girbs_path, method: :get, id: "search-form") do %>
  <%= text_field_tag :search, params[:search], placeholder: "Search Name" %>
  <%= submit_tag "Search", name: nil %>
  <% end %>
  <p></p>
  <div class="row">
    <% @girbs.each do |girb| %>
    <div class="col-lg-4 col-md-6">
      <div class="panel panel-default">
        <div class="panel-body">
          <%= link_to girb_path(girb) do %>
          <div style="font-size:22px;color:#0099FF">  
            <%= girb.name %>  
            <span>
            <%= link_to edit_girb_path(girb) do %>
            <i class="fa fa-pencil-square-o" style="color:green"></i>
            <% end %>
            </span>
            <span>
            <%= link_to girb_path(girb), method: :delete, data: {confirm: "Are you sure you want to delete?"} do %>
            <i class="fa fa-trash" style="color:purple"></i>
            <% end %>
            </span>
          </div>
          <% end %>
          <div ><%= girb.email %></div>
          <div style="padding-top:3px">
            <%= link_to like_girb_path(girb.id), method: :post do %>
            <i class="fa fa-heart" style="color:red"> <%= girb.like %></i>
            <% end %>
            <span class="pull-right">
            <%= link_to on_click_bang_girb_path(girb.id), method: :post do %>
            <i class="fa fa-rocket" > <%= girb.bangs.size %></i>
            <% end %>
            </span>
          </div>
        </div>
      </div>
    </div>
    <% end %>
  </div>
</div>





app/controllers/girbs_controller.rb

class GirbsController < ApplicationController

  def index

    @tab = params[:tab] if params[:tab].present?

    @level_cd = params[:level_cd] if params[:level_cd].present?

    if params[:search]
      @girbs = Girb.search(params[:search])
    else
      if @tab == "asc"
        if @level_cd
          @girbs = Girb.all.where(level_cd: @level_cd).order("name ASC")
        else
          @girbs = Girb.all.order("name ASC")
        end
      elsif @tab == "desc"
        if @level_cd != nil
          @girbs = Girb.all.where(level_cd: @level_cd).order("name DESC")
        else
          @girbs = Girb.all.order("name DESC")
        end
      else
        if @level_cd
          @girbs = Girb.all.where(level_cd: @level_cd)
        else
          @girbs = Girb.all
        end
      end

    end

  end

  # def index
  #   @tab = if %w(asc desc).include?(params[:tab]) then params[:tab] else :asc end
  #   @girbs = Girb.level_list(params[:level_cd]).search(params[:search]).order(name: @tab)
  # end

  def like_asc
    @at_like = false
    @girbs = Girb.all.order("like ASC")
    render :index
  end

  def like_desc
    @at_like = true
    @girbs = Girb.all.order("like DESC")
    render :index
  end

  def like
    @girb = Girb.find(params[:id])
    @girb.like += 1;
    @girb.save
    # redirect_to(girbs_path)
    redirect_to :back
  end

  def on_click_bang
    @girb = Girb.find(params[:id])
    @girb.bangs.create
    # redirect_to(girbs_path)
    redirect_to :back
  end

  def new
    @girb = Girb.new
  end

  def create
    @girb = Girb.new(girb_params)
    if @girb.save
      redirect_to(girbs_path)
    else
      render :new
    end
  end

  def show
    @girb = Girb.find(params[:id])
    # @comment = @girb.comments.build
  end

  def edit
    @girb = Girb.find(params[:id])
  end

  def update
    @girb = Girb.find(params[:id])
    if @girb.update(girb_params)
      redirect_to girbs_path
    else
      render :edit
    end
  end

  def destroy
    @girb = Girb.find(params[:id])
    @girb.destroy
    redirect_to girbs_path
  end

  private

  def girb_params
    params.require(:girb).permit(:name, :email, :like, :level_cd)
  end
end