미리보기 링크를 추가합니다

Gemfile

@@ -54,6 +54,10 @@ end
 #gem 'wicked_pdf'
 #gem 'wkhtmltopdf-binary'
 
+# open graph
+gem 'ogp', '~> 0.4.0'
+gem 'faraday', '~> 0.9.2'
+
 # excel
 gem 'axlsx', '2.1.0.pre'
 gem 'axlsx_rails'

Gemfile.lock

@@ -51,9 +51,11 @@ GEM
       sshkit (>= 1.6.1, != 1.7.0)
     ancestry (3.0.7)
       activerecord (>= 3.2.0)
+    ansi (1.5.0)
     archive-zip (0.12.0)
       io-like (~> 0.3.0)
     arel (9.0.0)
+    ast (2.4.2)
     autoprefixer-rails (9.7.2)
       execjs
     aws-eventstream (1.1.0)
@@ -1042,6 +1044,8 @@ GEM
     execjs (2.7.0)
     faker (1.7.3)
       i18n (~> 0.5)
+    faraday (0.9.2)
+      multipart-post (>= 1.2, < 3)
     ffi (1.11.3)
     fugit (1.3.3)
       et-orbi (~> 1.1, >= 1.1.8)
@@ -1118,13 +1122,19 @@ GEM
     mini_portile2 (2.5.0)
     minitest (5.14.4)
     msgpack (1.3.1)
+    multipart-post (2.1.1)
     net-scp (2.0.0)
       net-ssh (>= 2.6.5, < 6.0.0)
     net-ssh (5.2.0)
     nio4r (2.5.7)
     nokogiri (1.11.2)
       mini_portile2 (~> 2.5.0)
       racc (~> 1.4)
+    oga (2.15)
+      ast
+      ruby-ll (~> 2.1)
+    ogp (0.4.0)
+      oga (~> 2.15)
     orm_adapter (0.5.0)
     pg (1.1.4)
     popper_js (1.14.5)
@@ -1180,6 +1190,9 @@ GEM
     responders (3.0.0)
       actionpack (>= 5.0)
       railties (>= 5.0)
+    ruby-ll (2.1.2)
+      ansi
+      ast
     ruby-vips (2.0.16)
       ffi (~> 1.9)
     ruby_dep (1.5.0)
@@ -1297,6 +1310,7 @@ DEPENDENCIES
   devise
   dotenv-rails
   faker (~> 1.7.3)
+  faraday (~> 0.9.2)
   haml-rails (~> 1.0)
   health_check
   http_accept_language
@@ -1308,6 +1322,7 @@ DEPENDENCIES
   letter_opener_web
   listen (>= 3.0.5, < 3.2)
   mini_magick (~> 4.8)
+  ogp (~> 0.4.0)
   pg
   puma (~> 3.11)
   rails (~> 5.2.5)
@@ -1337,4 +1352,4 @@ RUBY VERSION
    ruby 2.6.6p146
 
 BUNDLED WITH
-   2.2.6
+   2.2.14

app/controllers/posts_controller.rb

@@ -10,6 +10,7 @@ def index
   # GET /posts/1
   # GET /posts/1.json
   def show
+    @preview_link = PreviewLink.find_by_url(@post.preview_link)
   end
 
   # GET /posts/new
@@ -46,6 +47,8 @@ def create
   # PATCH/PUT /posts/1
   # PATCH/PUT /posts/1.json
   def update
+    CrawlingJob.perform_later(@post.preview_link) if @post.preview_link
+
     respond_to do |format|
       if @post.update(post_params)
         format.html { redirect_to @post, notice: 'Post was successfully updated.' }
@@ -75,6 +78,6 @@ def set_post
 
     # Never trust parameters from the scary internet, only allow the white list through.
     def post_params
-      params.require(:post).permit(:archive_id, :title, :cover, :body)
+      params.require(:post).permit(:archive_id, :title, :cover, :body, :preview_link)
     end
 end

app/jobs/crawling_job.rb

@@ -0,0 +1,12 @@
+class CrawlingJob < ApplicationJob
+  queue_as :default
+
+  def perform(url)
+    link = PreviewLink.find_by_url(url)
+    unless link.present?
+      ogp = OGP::OpenGraph.new(Faraday.get(url)&.body)
+      link = PreviewLink.create(url: url, title: ogp.title, description: ogp.description, image: ogp.image.url)
+    end
+    logger.info "#{link.inspect}"
+  end
+end

app/models/preview_link.rb

@@ -0,0 +1,2 @@
+class PreviewLink < ApplicationRecord
+end

app/views/posts/_form.html.haml

@@ -6,4 +6,5 @@
   = f.input :title
   = f.input :cover
   = f.input :body, as: "summernote"
+  = f.input :preview_link
   = f.submit data: { disable_with: "Please wait..." }, class: 'btn btn-primary btn-full py-3'

app/views/posts/show.html.haml

@@ -13,6 +13,15 @@
     .my-4
       .body-content
         = raw @post.body
+    - if @preview_link.present?
+      = link_to @preview_link.url do
+        .preview-link-card{ style: "display: block; width: 438px; max-width: 100%; border-radius: .85714em; border: 1px solid #e1e8ed; overflow: hidden; line-height: 1.3em;" }
+          .card-cover-image{ style: "background-image: url(#{@preview_link.image}); background-size: cover; height: 220px; border-bottom: 1px solid #e1e8ed;" }
+          .card-meta{ style: "box-sizing: border-box; padding: .75em; text-decoration: none;"}
+            .card-meta-title{ style: "display: block; border-collapse: separate; text-align: left; word-wrap: break-word;" }
+              = @preview_link.title
+            .card-meta-description{ style: "max-height: 2.6em; margin-top: .32333em; overflow: hidden" }
+              = @preview_link.description
 
   - if @post.archive.present?
     %section

config/database.yml

@@ -1,17 +1,11 @@
-# SQLite version 3.x
-#   gem install sqlite3
-#
-#   Ensure the SQLite 3 gem is defined in your Gemfile
-#   gem 'sqlite3'
-#
 default: &default
   adapter: sqlite3
   pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %>
   timeout: 5000
 
 development:
   adapter: postgresql
-  database: datapublic
+  database: datapublic_development_<%= %x[git rev-parse --abbrev-ref HEAD].strip %>
   encoding: unicode
   host: <%= ENV.fetch("DATABASE_HOST") {"localhost"} %>
   <% if(ENV["DATABASE_USERNAME"] != nil) %>

db/migrate/20210630134855_add_preview_link_to_posts.rb

@@ -0,0 +1,5 @@
+class AddPreviewLinkToPosts < ActiveRecord::Migration[5.2]
+  def change
+    add_column :posts, :preview_link, :string
+  end
+end

db/migrate/20210717054410_create_preview_links.rb

@@ -0,0 +1,12 @@
+class CreatePreviewLinks < ActiveRecord::Migration[5.2]
+  def change
+    create_table :preview_links do |t|
+      t.string :url
+      t.string :title
+      t.text :description
+      t.string :image
+
+      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: 2020_11_16_105613) do
+ActiveRecord::Schema.define(version: 2021_07_17_054410) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -92,10 +92,20 @@
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
     t.bigint "archive_id"
+    t.string "preview_link"
     t.index ["archive_id"], name: "index_posts_on_archive_id"
     t.index ["user_id"], name: "index_posts_on_user_id"
   end
 
+  create_table "preview_links", force: :cascade do |t|
+    t.string "url"
+    t.string "title"
+    t.text "description"
+    t.string "image"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+  end
+
   create_table "rumors", force: :cascade do |t|
     t.string "title"
     t.text "body"

test/fixtures/preview_links.yml

@@ -0,0 +1,9 @@
+# Read about fixtures at http://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html
+
+one:
+  title: MyString
+  description: MyText
+
+two:
+  title: MyString
+  description: MyText

test/jobs/crawling_job_job_test.rb

@@ -0,0 +1,7 @@
+require 'test_helper'
+
+class CrawlingJobJobTest < ActiveJob::TestCase
+  # test "the truth" do
+  #   assert true
+  # end
+end

test/models/preview_link_test.rb

@@ -0,0 +1,7 @@
+require 'test_helper'
+
+class PreviewLinkTest < ActiveSupport::TestCase
+  # test "the truth" do
+  #   assert true
+  # end
+end