Ambiguous Sinatra - Vadim Evseev
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This document discusses some of the challenges of using Sinatra for complex web projects compared to Rails, including: 1. Models require additional configuration like dependent options and counter caches compared to ActiveRecord in Rails. 2. The ORM Sequel requires more setup than ActiveRecord in Rails but offers more flexibility. 3. Migrations need to be run manually from the command line rather than using Rails generators. 4. Additional gems are needed to get Rails-like functionality for assets, forms, routing, and reloading.
![Migrations
Rails Sinatra
ActiveRecord migrations Sequel migrations
sequel -m relative/path/to/migrations DBrails db:migrate
namespace :db do
desc 'Run migrations'
task :migrate, [:ver] do |_t, args|
Sequel.extension :migration
require ‘my_app_lib’
if args[:ver]
puts "Migrating to version
#{args[:ver]}"
Sequel::Migrator.run(DB, 'db/
migrations', target: args[:ver].to_i)
else
puts 'Migrating to latest'
Sequel::Migrator.run(DB, 'db/
migrations')
end
end
end](https://image.slidesharecdn.com/ambiguoussinatra-vadimevseev-180222111749/85/Ambiguous-Sinatra-Vadim-Evseev-20-320.jpg)
Ambiguous Sinatra - Vadim Evseev
- 2. Ambiguous Sinatra The story about difficulties, surprises and workarounds using Sinatra for complex projects. Story about walking through the mines field from the person who started learning Ruby from RoR framework.
- 3. Sinatra
- 4. Web project 1. Models, ORM, migrations 2. Routes 3. Assets pipeline 4. Forms, helpers 5. Console 6. Code load 7. Security, CSRF
- 7. Jeremy Evans
- 9. Models Sinatra Sequel models Rails ActiveRecord models dependent options dependent options Sequel::Model.plugin :association_dependencies plugin :association_dependencies, some_model: :destroy counter cache
- 10. Models Sinatra Sequel models Rails ActiveRecord models counter cache dependent optionsdependent options counter cache
- 11. Models Sinatra Sequel models Rails ActiveRecord models counter cache require 'sequel_postgresql_triggers' dependent optionsdependent options counter cache
- 14. Jeremy Evans
- 15. ORM Rails Sinatra ActiveRecord, Arel Sequel
- 16. ORM Rails Sinatra ActiveRecord, Arel Sequel gem 'sequel_pg', :require=>'sequel' overwrites the inner loop of the Sequel postgres adapter row fetching code with a C version
- 17. ORM Rails Sinatra ActiveRecord, Arel Sequel gem 'sequel_pg', :require=>'sequel' plugin pg_json plugin tree, rcte_tree
- 18. Sequel
- 20. Migrations Rails Sinatra ActiveRecord migrations Sequel migrations sequel -m relative/path/to/migrations DBrails db:migrate namespace :db do desc 'Run migrations' task :migrate, [:ver] do |_t, args| Sequel.extension :migration require ‘my_app_lib’ if args[:ver] puts "Migrating to version #{args[:ver]}" Sequel::Migrator.run(DB, 'db/ migrations', target: args[:ver].to_i) else puts 'Migrating to latest' Sequel::Migrator.run(DB, 'db/ migrations') end end end
- 22. Routes Rails Sinatra by design gem 'sinatra_more' require 'sinatra_more' class Application < Sinatra::Base register SinatraMore::MarkupPlugin register SinatraMore::RenderPlugin register SinatraMore::WardenPlugin register SinatraMore::MailerPlugin register SinatraMore::RoutingPlugin end
- 23. Routes Rails Sinatra by design gem 'sinatra_more' • code generators for creating new sinatra applications (sinatra_gen) • generic view and tag helpers (tag, content_tag, input_tag, …) • asset tag helpers (link_to, image_tag, javascript_include_tag, …) • full form helpers (form_tag, form_for, field_set_tag, text_field, …) • full url named route support • formatting extensions (relative_time_ago, js_escape_html, sanitize_html) • simple 'mailer' support for sinatra (powered by pony) • plug and play setup for the excellent Warden authentication system
- 25. Assets pipeline Rails Sinatra by design gem 'sinatra-asset-pipeline' require 'sinatra/asset_pipeline' class App < Sinatra::Base register Sinatra::AssetPipeline … some code … end use sprockets-helpers
- 26. Forms, helpers Rails Sinatra by design, Action View
- 27. Jeremy Evans
- 28. Forms, helpers Rails Sinatra by design, Action View gem 'forme'
- 29. Forms, helpers Rails Sinatra by design, Action View gem ‘forme’ + SLIM
- 30. Forms, helpers Rails Sinatra by design, Action View gem ‘forme’ + SLIM
- 31. Code load Rails Sinatra Autoloading and Reloading Constants Sinatra::Reloader require "sinatra/reloader"config.cache_classes = false require "sinatra/base" require "sinatra/reloader" class MyApp < Sinatra::Base configure :development do register Sinatra::Reloader also_reload '/path/to/some/file' dont_reload '/path/to/other/file' after_reload do puts 'reloaded' end end ... some code ... end
- 32. Code load Rails Sinatra Autoloading and Reloading Constants gem ‘rerun'config.cache_classes = false
- 33. Code load Rails Sinatra Autoloading and Reloading Constants gem ‘rerun'config.cache_classes = false rerun ruby ./app.rb
- 34. Code load Rails Sinatra Autoloading and Reloading Constants config.cache_classes = false require "sinatra/reloader" gem ‘rerun'
- 36. Console Rails Sinatra require 'bundler/setup' Bundler.require(:default) require File.dirname(__FILE__) + "/lib/app_base.rb" require File.dirname(__FILE__) + "/lib/app_other.rb" map "/" do run AppBase end map "/another" do run AppOther end rails c irb -r ./app.rb config.ru
- 37. Console Rails Sinatra rails c irb -r ./app.rb
- 38. Modular application Rails Sinatra by design config.ru
- 39. Modular application Rails Sinatra module MyApp class App < Sinatra::Base ...some code... use MyApp::Controllers::SomeController ...some code... end end include MyApp by design config.ru app.rb
- 40. Specs Rails Sinatra rspec + turnip + factory_bot … sequel + factory_bot
- 41. Specs Rails Sinatra rspec + turnip + factory_bot … sequel + factory_bot NoMethodError: undefined method `save!' for #<Model:...>
- 42. Specs Rails Sinatra rspec + turnip + factory_bot … sequel + factory_bot NoMethodError: undefined method `save!' for #<Model:...> a) call FactoryGirl.build(:symbol) to build a Model instance and after call that create() b) add into FactoryGirl model definition: to_create { |i| i.save } or
- 43. Specs Rails Sinatra rspec + turnip + factory_bot … sequel + factory_bot
- 44. Security, CSRF Rails Sinatra CSRF tokens, security updates gem 'rack_csrf' require "rack/csrf" configure do use Rack::Session::Cookie, secret: "some secret" use Rack::Csrf, raise: true end <form method="post" action="/tweet"> <%= Rack::Csrf.csrf_tag(env) %> <input type="text" name="message"/> <input type="submit" value="Submit a tweet!"/> </form>
- 45. Installing CSRF
- 46. Cost of support Rails Sinatra
- 47. WE ARE NEED YOUR MONEY
- 48. Rails Sinatra Cost of support
- 49. Jeremy Evans
- 50. Rails Sinatra Cost of support