Filters on junior story model

.gitignore

@@ -15,3 +15,4 @@
 /log/*
 !/log/.keep
 /tmp
+*.swp

app/controllers/junior_stories_controller.rb

@@ -1,11 +1,17 @@
 class JuniorStoriesController < ApplicationController
 
   def index
-    @junior_stories = JuniorStory.all
+    @junior_stories = JuniorStory.
+      filter(allowed_params(params))
+
+    @fields = fields
+    @csv_params = allowed_params(params).merge({ format: 'csv' })
+
+    @filtered = params_set?
 
     respond_to do |format|
       format.html
-      format.csv { send_data @junior_stories.to_csv, type: 'application/csv' }
+      format.csv { send_data @junior_stories.to_csv, type: 'application/csv', filename: 'junior_stories.csv' }
     end
   end
 
@@ -17,7 +23,7 @@ def show
   end
 
   def create
-    @junior_story = JuniorStory.new(junior_story_params)
+    @junior_story = JuniorStory.new(allowed_params(required_params))
     if @junior_story.save
       redirect_to junior_stories_path
     else
@@ -26,11 +32,50 @@ def create
   end
 
   private
-  def junior_story_params
-    params.require(:junior_story).permit(:job, :happy_in_job, :happy_info,
+  def required_params
+    params.require(:junior_story)
+  end
+
+  def allowed_params(params)
+    params.permit(:job, :happy_in_job, :happy_info,
       :gender, :city, :country, :days_per_week, :salary, :currency, :technology, :focus,
       :age, :years_working_in_total, :years_working_at_job, :education, :first_job,
       :remote, :tech_team_size, :company_size, :company_age, :person_of_colour, :other,
       :publishing_consent, :freelancer, :person_with_disability)
   end
+
+  # TODO: shouldn't hard code this, but I like having demo search terms in the list
+  def fields
+    {
+      job: "junior developer",
+      happy_in_job: "yes",
+      happy_info: "It's ok",
+      gender: "female",
+      city: "Berlin",
+      country: "DE",
+      days_per_week: "5",
+      salary: "15000",
+      currency: "€",
+      technology: "RoR",
+      focus: "backend",
+      age: 30,
+      years_working_total: "less than 1 year",
+      years_working_at_job: "less than 1 year",
+      education: "self taught",
+      first_job: "no",
+      remote: "no",
+      tech_team_size: "5 - 10 people",
+      company_size: "less than 10 people",
+      company_age: 5,
+      person_of_colour: false,
+      other: "Thanks",
+      freelancer: "f"
+    }
+  end
+
+  def params_set?
+    values = allowed_params(params).values
+    values.reject { |value| value.blank? || value.empty? || value.nil? }
+    !values.empty?
+  end
 end

app/models/concerns/filterable.rb

@@ -0,0 +1,15 @@
+module Filterable
+  extend ActiveSupport::Concern
+
+  module ClassMethods
+    def filter(params)
+      results = self.all
+      params.each do |key, value|
+        if results.column_names.include? key
+          results = results.where(key => value) if value.present?
+        end
+      end
+      results
+    end
+  end
+end

app/models/junior_story.rb

@@ -1,6 +1,7 @@
 require 'csv'
 
 class JuniorStory < ApplicationRecord
+  include Filterable
 
   validates :salary, presence: true
   validates :currency, presence: true

app/views/junior_stories/index.html.erb

@@ -4,7 +4,43 @@
       <h1>Junior Stories:</h1>
     </div>
 
-    <%= link_to "Download as CSV", junior_stories_path(format: "csv"), class: 'btn btn-info' %>
+    <%= link_to "Download as CSV", junior_stories_path(@csv_params), class: 'btn btn-info' %>
+    <!-- Button trigger modal -->
+    <button type="button" class="btn btn-info" data-toggle="modal" data-target="#myModal">
+      Filter Stories
+    </button>
+    <% if @filtered %>
+    <%= link_to "Reset filters", junior_stories_path, class: 'btn btn-info' %>
+    <% end %>
+    <!-- Filter Modal -->
+    <div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">
+      <div class="modal-dialog" role="document">
+        <%= form_tag({controller: "junior_stories", action: "index" }, { method: "get", class: "form-horizontal" }) do %>
+          <div class="modal-content">
+            <div class="modal-header">
+              <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
+              <h4 class="modal-title" id="myModalLabel">Filter for Fields</h4>
+            </div>
+            <div class="modal-body">
+              <% @fields.each do |name, demo_value| %>
+                <div class="form-group">
+                  <div class="col-sm-offset-1"></div>
+                  <label class="col-sm-4 control-label"><%= name %></label>
+                  <div class="col-sm-6">
+                    <input type="text" class="form-control" name="<%= name %>" placeholder="<%= demo_value %>">
+                  </div>
+                </div>
+              <% end %>
+            </div>
+
+            <div class="modal-footer">
+              <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
+              <button type="submit" class="btn btn-primary">Filter</button>
+            </div>
+          </div>
+        <% end %>
+      </div>
+    </div>
 
     <div class='junior-stories'>
       <% @junior_stories.each do |j| %>

spec/controllers/junior_story_controller_spec.rb

@@ -0,0 +1,81 @@
+require 'rails_helper'
+
+describe JuniorStoriesController do
+  describe 'GET index' do
+    context 'without filter params' do
+      it 'assigns @junior_stories' do
+        story = build :junior_story
+        story.save
+        get :index
+        expect(assigns(:junior_stories)).to eq([story])
+      end
+
+      it 'renders the index template' do
+        get :index
+        expect(response).to render_template('index')
+      end
+
+      it 'does not render index, but instead responds with csv' do
+        get :index, format: 'csv'
+        expect(response).not_to render_template('index')
+        expect(response.content_type).to include 'application/csv'
+      end
+    end
+
+    context 'with legal filter params' do
+      it 'returns only the filter appropriate junior_story' do
+        female_story = build :junior_story
+        female_story.gender = 'female'
+        female_story.save
+
+        male_story = build :junior_story
+        male_story.gender = 'male'
+        male_story.save
+
+
+        get :index, { 'gender' => 'female' }
+        expect(assigns(:junior_stories)).to eq([female_story])
+      end
+
+      it 'renders the index template' do
+        get :index, { 'gender' => 'female' }
+        get :index
+        expect(response).to render_template('index')
+      end
+
+      it 'does not render index, but instead responds with csv' do
+        get :index, { 'gender' => 'female', 'format' => 'csv' }
+        expect(response).not_to render_template('index')
+        expect(response.content_type).to include 'application/csv'
+      end
+    end
+
+    context 'with illegal filter params' do
+      it 'ignores illegal filter params but respects legal filter params' do
+        female_story = build :junior_story
+        female_story.gender = 'female'
+        female_story.save
+
+        male_story = build :junior_story
+        male_story.gender = 'male'
+        male_story.save
+
+
+        get :index, { 'makes_no_sense' => 'random', 'gender' => 'female' }
+        expect(assigns(:junior_stories)).to eq([female_story])
+      end
+
+      it 'renders the index template' do
+        get :index, { 'makes_no_sense' => 'random' }
+        get :index
+        expect(response).to render_template('index')
+      end
+
+      it 'does not render index, but instead responds with csv' do
+        get :index, { 'makes_no_sense' => 'random', 'format' => 'csv' }
+        expect(response).not_to render_template('index')
+        expect(response.content_type).to include 'application/csv'
+      end
+    end
+  end
+end