https://qiita.com/kazukimatsumoto/items/a0daa7281a3948701c39
というサイトを見てherokuを使ってrailsで作ったサイトを作り公開することができたのですがデータベースのデータを表示させる機能のところで何も表示されていません。heroku run rails db:migrateはしっかり通りました。ローカルではうまくいっていたのになぜでしょうか。gemfileはこのようになっています。
source 'https://rubygems.org' git_source(:github) { |repo| "https://github.com/#{repo}.git" } ruby '2.6.5' # Bundle edge Rails instead: gem 'rails', github: 'rails/rails' gem 'rails', '~> 5.2.4', '>= 5.2.4.2' # Use sqlite3 as the database for Active Record # gem 'sqlite3' # Use Puma as the app server gem 'puma', '~> 3.11' # Use SCSS for stylesheets gem 'sass-rails', '~> 5.0' # Use Uglifier as compressor for JavaScript assets gem 'uglifier', '>= 1.3.0' # See https://github.com/rails/execjs#readme for more supported runtimes gem 'duktape' # Use CoffeeScript for .coffee assets and views gem 'coffee-rails', '~> 4.2' # Turbolinks makes navigating your web application faster. Read more: https://github.com/turbolinks/turbolinks gem 'turbolinks', '~> 5' # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder gem 'jbuilder', '~> 2.5' # Use Redis adapter to run Action Cable in production # gem 'redis', '~> 4.0' # Use ActiveModel has_secure_password # gem 'bcrypt', '~> 3.1.7' # Use ActiveStorage variant # gem 'mini_magick', '~> 4.8' # Use Capistrano for deployment # gem 'capistrano-rails', group: :development # Reduces boot times through caching; required in config/boot.rb gem 'bootsnap', '>= 1.1.0', require: false group :development, :test do # Call 'byebug' anywhere in the code to stop execution and get a debugger console gem 'byebug', platforms: [:mri, :mingw, :x64_mingw] gem 'sqlite3' end group :development do # Access an interactive console on exception pages or by calling 'console' anywhere in the code. gem 'web-console', '>= 3.3.0' end group :test do # Adds support for Capybara system testing and selenium driver gem 'capybara', '>= 2.15' gem 'selenium-webdriver' # Easy installation and use of chromedriver to run system tests with Chrome gem 'chromedriver-helper' end # Windows does not include zoneinfo files, so bundle the tzinfo-data gem gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby] group :production do gem 'pg' end
また、heroku run rails db:migrate:statusを行ってこのような結果になりました。
heroku
1Running rails db:migrate:status on ⬢ kumashunshun-tension-appsss... up, run.3517 (Free) 2 3database: d4vrel4m1bsr3o 4 5 Status Migration ID Migration Name 6-------------------------------------------------- 7D, [2020-04-15T16:06:19.098564 #4] DEBUG -- : (1.4ms) SELECT "schema_migrations"."version" FROM "schema_migrations" ORDER BY "schema_migrations"."version" ASC 8 up 20200407153950 Create sentences 9 10