Add a form for product interest

app/assets/stylesheets/_interest.scss

@@ -0,0 +1,18 @@
+.interest {
+  margin-top: $base-spacing;
+}
+
+.new_interest {
+  display: flex;
+  align-items: stretch;
+
+  .btn {
+    flex: 0 0 auto;
+    margin-bottom: $small-spacing;
+  }
+
+  .email {
+    flex: 1 0 auto;
+    margin-right: $small-spacing;
+  }
+}

app/assets/stylesheets/_timer.scss

@@ -1,5 +1,4 @@
-.timer,
-.timer-explanation {
+.timer {
   font-family: 'Source Sans Pro', sans-serif;
 }
 

app/assets/stylesheets/application.scss

@@ -8,6 +8,7 @@
 @import "base/base";
 @import "refills/flashes";
 
+@import "interest";
 @import "layout";
 @import "left_column";
 @import "posts";

app/assets/stylesheets/base/_buttons.scss

@@ -11,7 +11,7 @@
   -webkit-font-smoothing: antialiased;
   font-weight: 600;
   line-height: 1;
-  padding: $small-spacing $base-spacing;
+  padding: 0 $base-spacing;
   text-align: center;
   text-decoration: none;
   transition: background-color $base-duration $base-timing;

app/controllers/interests_controller.rb

@@ -0,0 +1,25 @@
+# frozen_string_literal: true
+
+class InterestsController < ApplicationController
+  def create
+    @interest = Interest.new(interest_params)
+
+    if @interest.save
+      redirect_back(
+        fallback_location: root_path,
+        notice: t("interest.create.success"),
+      )
+    else
+      redirect_back(
+        fallback_location: root_path,
+        alert: t("interest.create.failure"),
+      )
+    end
+  end
+
+  private
+
+  def interest_params
+    params.require(:interest).permit(:email)
+  end
+end

app/helpers/application_helper.rb

@@ -1,5 +1,9 @@
 module ApplicationHelper
   def expiration_time
-    Post.order(created_at: :desc).first.created_at + 7.days
+    if Post.any?
+      Post.order(created_at: :desc).first.created_at + 7.days
+    else
+      Time.current
+    end
   end
 end

app/models/interest.rb

@@ -0,0 +1,5 @@
+# frozen_string_literal: true
+
+class Interest < ApplicationRecord
+  validates :email, presence: true
+end

app/views/application/_interest.html.erb

@@ -0,0 +1,14 @@
+<div class="interest">
+  <h2>Want a self-destructing blog of your own?</h2>
+
+  <p>
+  Let me know.
+  If enough people want a blog of their own like this,
+  I'll turn it into something that anyone can use.
+  </p>
+
+  <%= simple_form_for(@interest || Interest.new) do |form| %>
+    <%= form.input :email, label: false, placeholder: "Email" %>
+    <%= form.button :submit %>
+  <% end %>
+</div>

app/views/layouts/application.html.erb

@@ -20,6 +20,7 @@
   <div class="content">
     <div class="left-column">
       <%= render "application/timer" %>
+      <%= render "application/interest" %>
     </div>
 
     <div class="right-column">

config/locales/en.yml

@@ -6,6 +6,16 @@ en:
       with_weekday:
         "%a %m/%d/%y"
 
+  helpers:
+    submit:
+      interest:
+        create: I'll take one, please.
+
+  interest:
+    create:
+      success: Thanks for your interest! I'll send you an email if there are any updates.
+      failure: Damn, that didn't work. Try again?
+
   time:
     formats:
       default:

config/routes.rb

@@ -1,5 +1,6 @@
 Rails.application.routes.draw do
   resources :posts
+  resources :interests, only: [:create]
 
   root to: "posts#index"
 end

db/migrate/20160920004216_create_interests.rb

@@ -0,0 +1,9 @@
+class CreateInterests < ActiveRecord::Migration[5.0]
+  def change
+    create_table :interests do |t|
+      t.string :email, null: false
+
+      t.timestamps
+    end
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20160909164244) do
+ActiveRecord::Schema.define(version: 20160920004216) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -30,6 +30,12 @@
     t.index ["priority", "run_at"], name: "delayed_jobs_priority", using: :btree
   end
 
+  create_table "interests", force: :cascade do |t|
+    t.string   "email",      null: false
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+  end
+
   create_table "posts", force: :cascade do |t|
     t.string   "title"
     t.string   "tags"

spec/controllers/posts_controller_spec.rb

@@ -36,37 +36,6 @@
   # PostsController. Be sure to keep this updated too.
   let(:valid_session) { {} }
 
-  describe "GET #index" do
-    it "assigns all posts as @posts" do
-      post = Post.create! valid_attributes
-      get :index, params: {}, session: valid_session
-      expect(assigns(:posts)).to eq([post])
-    end
-  end
-
-  describe "GET #show" do
-    it "assigns the requested post as @post" do
-      post = Post.create! valid_attributes
-      get :show, params: {id: post.to_param}, session: valid_session
-      expect(assigns(:post)).to eq(post)
-    end
-  end
-
-  describe "GET #new" do
-    it "assigns a new post as @post" do
-      get :new, params: {}, session: valid_session
-      expect(assigns(:post)).to be_a_new(Post)
-    end
-  end
-
-  describe "GET #edit" do
-    it "assigns the requested post as @post" do
-      post = Post.create! valid_attributes
-      get :edit, params: {id: post.to_param}, session: valid_session
-      expect(assigns(:post)).to eq(post)
-    end
-  end
-
   describe "POST #create" do
     context "with valid params" do
       it "creates a new Post" do
@@ -75,24 +44,13 @@
         }.to change(Post, :count).by(1)
       end
 
-      it "assigns a newly created post as @post" do
-        post :create, params: {post: valid_attributes}, session: valid_session
-        expect(assigns(:post)).to be_a(Post)
-        expect(assigns(:post)).to be_persisted
-      end
-
       it "redirects to the created post" do
         post :create, params: {post: valid_attributes}, session: valid_session
         expect(response).to redirect_to(Post.last)
       end
     end
 
     context "with invalid params" do
-      it "assigns a newly created but unsaved post as @post" do
-        post :create, params: {post: invalid_attributes}, session: valid_session
-        expect(assigns(:post)).to be_a_new(Post)
-      end
-
       it "re-renders the 'new' template" do
         post :create, params: {post: invalid_attributes}, session: valid_session
         expect(response).to render_template("new")
@@ -113,12 +71,6 @@
         skip("Add assertions for updated state")
       end
 
-      it "assigns the requested post as @post" do
-        post = Post.create! valid_attributes
-        put :update, params: {id: post.to_param, post: valid_attributes}, session: valid_session
-        expect(assigns(:post)).to eq(post)
-      end
-
       it "redirects to the post" do
         post = Post.create! valid_attributes
         put :update, params: {id: post.to_param, post: valid_attributes}, session: valid_session
@@ -127,12 +79,6 @@
     end
 
     context "with invalid params" do
-      it "assigns the post as @post" do
-        post = Post.create! valid_attributes
-        put :update, params: {id: post.to_param, post: invalid_attributes}, session: valid_session
-        expect(assigns(:post)).to eq(post)
-      end
-
       it "re-renders the 'edit' template" do
         post = Post.create! valid_attributes
         put :update, params: {id: post.to_param, post: invalid_attributes}, session: valid_session
@@ -155,5 +101,4 @@
       expect(response).to redirect_to(posts_url)
     end
   end
-
 end

spec/factories.rb

@@ -1,4 +1,7 @@
 FactoryGirl.define do
+  factory :interest do
+    email "MyString"
+  end
   factory :post do
     title "MyString"
     tags "MyString"

spec/features/register_interest_spec.rb

@@ -0,0 +1,21 @@
+require "rails_helper"
+
+feature "Register interest" do
+  scenario "successfully" do
+    visit root_path
+
+    fill_in "Email", with: "[email protected]"
+    click_on "I want in."
+
+    expect(page).to have_content t("interest.create.success")
+    expect(Interest.last.email).to eq("[email protected]")
+  end
+
+  scenario "unsuccessfully" do
+    visit root_path
+
+    click_on "I want in."
+
+    expect(page).to have_content t("interest.create.failure")
+  end
+end

spec/models/interest_spec.rb

@@ -0,0 +1,5 @@
+require 'rails_helper'
+
+RSpec.describe Interest, type: :model do
+  pending "add some examples to (or delete) #{__FILE__}"
+end