ООО «Хекслет Рус»
108813 г. Москва, вн.тер.г. поселение Московский,
г. Московский, ул. Солнечная, д. 3А, стр. 1, помещ. 20Б/3
ОГРН 1217300010476
ИНН 7325174845
АНО ДПО «Учебный центр «Хекслет»
119331 г. Москва, вн. тер. г. муниципальный округ
Ломоносовский, пр-кт Вернадского, д. 29
ОГРН 1247700712390
ИНН 7736364948
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Нет слов просто. Такого быть не должно\n\nНа перезапись","plain_title":"Видео - испанский стыд. Нет слов просто. Такого быть не должно На перезапись ","creator":{"public_name":"","id":9733,"is_tutor":false},"comments":[{"creator":{"public_name":"Nikolai Gagarinov","id":104929,"is_tutor":true},"id":180087,"body":"Кирилл, добрый день.\n\nПередал информацию авторам. Займемся улучшением.","topic_id":90704}],"communitable":{"parent_entity_name":null,"parent_entity_url":null,"entity_name":"Streaming","entity_url":null,"active":true}},{"id":101348,"title":"долго думал почему не сказали про send_stream, а потом понял что только в Rails 7 появился","plain_title":"долго думал почему не сказали про send_stream, а потом понял что только в Rails 7 появился ","creator":{"public_name":"Cat P","id":236791,"is_tutor":false},"comments":[{"creator":{"public_name":"Maksim Litvinov","id":198906,"is_tutor":true},"id":193315,"body":"Приветствую, Артем! Спасибо за фидбек, оформил его в тикет","topic_id":101348},{"creator":{"public_name":"Cat P","id":236791,"is_tutor":false},"id":193414,"body":"конечно хотелось бы этот вебинар перезаписать) много ошибок, примеры не получились","topic_id":101348}],"communitable":{"parent_entity_name":null,"parent_entity_url":null,"entity_name":"Streaming","entity_url":null,"active":true}}],"lesson":{"exercise":{"id":4336,"slug":"rails_full_streaming_exercise","name":null,"state":"active","kind":"exercise","language":"ruby","locale":"ru","has_web_view":true,"has_test_view":false,"reviewable":true,"readme":"В этом задании необходимо реализовать потоковую выгрузку CSV-отчета.\n\n### app/controllers/web/users_controller.rb\n\nРеализуйте метод `stream_csv()`, который генерирует отчет в CSV *report.csv* с полным списком пользователей. 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Для этого укажите нужное количество в сидах и выполните их\n","has_solution":true,"entity_name":"Streaming"},"units":[{"id":4854,"name":"theory","url":"/courses/rails-full/lessons/streaming/theory_unit"},{"id":14576,"name":"quiz","url":"/courses/rails-full/lessons/streaming/quiz_unit"},{"id":14563,"name":"exercise","url":"/courses/rails-full/lessons/streaming/exercise_unit"}],"links":[{"id":422822,"name":"ActionController::Live","url":"https://api.rubyonrails.org/classes/ActionController/Live.html"}],"ordered_units":[{"id":4854,"name":"theory","url":"/courses/rails-full/lessons/streaming/theory_unit"},{"id":14576,"name":"quiz","url":"/courses/rails-full/lessons/streaming/quiz_unit"},{"id":14563,"name":"exercise","url":"/courses/rails-full/lessons/streaming/exercise_unit"}],"id":2178,"slug":"streaming","state":"approved","name":"Streaming","course_order":400,"goal":"Знакомимся со стримингом","self_study":"Создайте Rails-проект, если его еще нет. В этом задании добавим вывод логов *development.log* по адресу */logs*\n\nСоздайте контроллер LogsController с методом `index()`\n\nДобавьте в него потоковый вывод. Обычный вывод содержимого файла выглядит так:\n\n```ruby\nclass LogsController < ApplicationController\n def index\n log_file = Rails.root.join(\"log\", \"development.log\")\n @log_contents = File.read(log_file)\n render plain: @log_contents\n end\nend\n```\n\n<details>\n <summary>Пример результата</summary>\n\n```ruby\nclass LogsController < ApplicationController\n include ActionController::Live\n\n def index\n response.headers['Content-Type'] = 'text/event-stream'\n file = File.open(Rails.root.join(\"log\", \"development.log\"), \"r\")\n file.seek(0, IO::SEEK_END) # сразу в конец, чтобы \"слушать\" новые строки\n\n loop do\n line = file.gets\n if line\n response.stream.write \"#{line}\\n\\n\"\n end\n end\n rescue IOError\n # клиент отключился\n ensure\n file.close\n response.stream.close\n end\nend\n```\n\n</details>\n","theory_video_provider":"vimeo","theory_video_uid":"635326870","theory":"## Программа урока\n\n* Streaming шаблонов в Rails\n* Streaming файлов в Rails\n* Streaming vs Live в Rails\n\n```ruby\nclass BooksController < ApplicationController\n def index\n @books = Book.all\n\n # Включение стриминга шаблонов\n # https://api.rubyonrails.org/classes/ActionController/Streaming.html\n render stream: true\n end\nend\n\n# при запросе с помощью Curl данные будут отдаваться постепенно\nclass HelloController < ActionController::Base\n include ActionController::Live\n\n def stream\n response.headers['Content-Type'] = 'text/event-stream'\n response.headers[\"Last-Modified\"] = Time.current.httpdate\n 100.times {\n response.stream.write \"hello world\\n\"\n sleep 1\n }\n ensure\n response.stream.close\n end\nend\n\n# https://api.rubyonrails.org/v5.1.7/classes/ActionController/DataStreaming.html\nclass BooksController < ActionController::Base\n include ActionController::Live\n\n def send_file\n # Используется для отправки готового файла\n send_file(Rails.root.join('public', '404.html'), filename: 'hello.txt')\n end\n\n # https://api.rubyonrails.org/v5.1.7/classes/ActionController/DataStreaming.html\n def send_data\n # Отправляется стриминговый файл, которого изначально нет\n data = 'Hello'\n send_data(data, filename: 'hello.txt')\n end\nend\n```\n"},"lessonMember":null,"courseMember":null,"course":{"start_lesson":{"exercise":{"id":4334,"slug":"rails_full_api_exercise","name":null,"state":"active","kind":"exercise","language":"ruby","locale":"ru","has_web_view":true,"has_test_view":false,"reviewable":true,"readme":"В предыдущих домашних заданиях мы реализовывали так называемые \"классические\" Web-приложения состоящие из страниц гипертекста, отображаемых в браузере. Такие приложения ориентированы на взаимодействие с человеком - пользователем сайта. Но часто возникает задача когда одно приложение должно взаимодействовать с другим, и использование HTML разметки с формами не является удобным решением. Для таких случаев в приложении добавляют API или Application Programming Interface (Программный интерфейс приложения) — протокол взаимодействия между вашим приложением и другими программами, который позволяет обмениваться информацией с использованием, например, JSON формата.\n\n### app/controllers/api/application_controller.rb\n\nУстановите формат ответа по умолчанию JSON, используя метод `respond_to()`.\n\n### app/controllers/api/users_controller.rb\n\nРеализуйте обработчики `show()` для получения данных об одном пользователе и `index()` — для получения данных о всех пользователей. Используйте метод `respond_with()` для представления сущности в формате JSON. Такой подход, когда отдаются все поля не совсем является корректным, потому что сущность может содержать поля, которые нужно скрыть, например, в целях безопасности. Как правильно решается эта задача, мы рассмотрим в следующем домашнем задании.\n\n### config/routes.rb\n\nДля роутинга будем использовать знания, полученные из прошлых уроков, поэтому в неймспейс *api* добавьте ресурc *users* с методами `index()` и `show()`.\n\nЭндпоинты:\n\n* **GET** *api/users.json* - получение списка пользователей отсортированных по *id* по возрастанию\n* **GET** *api/users/:id.json* - получение информации о пользователе\n\nВ API не должно быть полей *password_digest*, *created_at*, *updated_at*.\n\nПроверьте в веб-доступе или терминале, данные отдаются в JSON формате.\n\n\n```bash\ncurl http://localhost:8080/api/users/1.json\n{\n \"id\": 1,\n \"first_name\": \"Sophie\",\n \"last_name\": null,\n \"email\": \"sam_fadel@frami.test\",\n \"address\": \"Phoebe's Apartment\",\n \"balance\": \"8163\",\n \"state\": \"archive\"\n}\n```\n\n```bash\ncurl http://localhost:8080/api/users.json\n[\n {\n \"id\": 1,\n \"first_name\": \"Sophie\",\n \"last_name\": null,\n \"email\": \"sam_fadel@frami.test\",\n \"address\": \"Phoebe's Apartment\",\n \"balance\": \"8163\",\n \"state\": \"archive\"\n },\n ...\n]\n```\n\n## Подсказки\n\n* [as_json()](https://apidock.com/rails/ActiveModel/Serializers/JSON/as_json)\n","prepared_readme":"В предыдущих домашних заданиях мы реализовывали так называемые \"классические\" Web-приложения состоящие из страниц гипертекста, отображаемых в браузере. Такие приложения ориентированы на взаимодействие с человеком - пользователем сайта. Но часто возникает задача когда одно приложение должно взаимодействовать с другим, и использование HTML разметки с формами не является удобным решением. Для таких случаев в приложении добавляют API или Application Programming Interface (Программный интерфейс приложения) — протокол взаимодействия между вашим приложением и другими программами, который позволяет обмениваться информацией с использованием, например, JSON формата.\n\n### app/controllers/api/application_controller.rb\n\nУстановите формат ответа по умолчанию JSON, используя метод `respond_to()`.\n\n### app/controllers/api/users_controller.rb\n\nРеализуйте обработчики `show()` для получения данных об одном пользователе и `index()` — для получения данных о всех пользователей. Используйте метод `respond_with()` для представления сущности в формате JSON. Такой подход, когда отдаются все поля не совсем является корректным, потому что сущность может содержать поля, которые нужно скрыть, например, в целях безопасности. Как правильно решается эта задача, мы рассмотрим в следующем домашнем задании.\n\n### config/routes.rb\n\nДля роутинга будем использовать знания, полученные из прошлых уроков, поэтому в неймспейс *api* добавьте ресурc *users* с методами `index()` и `show()`.\n\nЭндпоинты:\n\n* **GET** *api/users.json* - получение списка пользователей отсортированных по *id* по возрастанию\n* **GET** *api/users/:id.json* - получение информации о пользователе\n\nВ API не должно быть полей *password_digest*, *created_at*, *updated_at*.\n\nПроверьте в веб-доступе или терминале, данные отдаются в JSON формате.\n\n\n```bash\ncurl http://localhost:8080/api/users/1.json\n{\n \"id\": 1,\n \"first_name\": \"Sophie\",\n \"last_name\": null,\n \"email\": \"sam_fadel@frami.test\",\n \"address\": \"Phoebe's Apartment\",\n \"balance\": \"8163\",\n \"state\": \"archive\"\n}\n```\n\n```bash\ncurl http://localhost:8080/api/users.json\n[\n {\n \"id\": 1,\n \"first_name\": \"Sophie\",\n \"last_name\": null,\n \"email\": \"sam_fadel@frami.test\",\n \"address\": \"Phoebe's Apartment\",\n \"balance\": \"8163\",\n \"state\": \"archive\"\n },\n ...\n]\n```\n\n## Подсказки\n\n* [as_json()](https://apidock.com/rails/ActiveModel/Serializers/JSON/as_json)\n","has_solution":true,"entity_name":"API"},"units":[{"id":4839,"name":"theory","url":"/courses/rails-full/lessons/api/theory_unit"},{"id":14574,"name":"quiz","url":"/courses/rails-full/lessons/api/quiz_unit"},{"id":14561,"name":"exercise","url":"/courses/rails-full/lessons/api/exercise_unit"}],"links":[{"id":422793,"name":"Гем responders","url":"https://github.com/heartcombo/responders"}],"ordered_units":[{"id":4839,"name":"theory","url":"/courses/rails-full/lessons/api/theory_unit"},{"id":14574,"name":"quiz","url":"/courses/rails-full/lessons/api/quiz_unit"},{"id":14561,"name":"exercise","url":"/courses/rails-full/lessons/api/exercise_unit"}],"id":2167,"slug":"api","state":"approved","name":"API","course_order":200,"goal":"Знакомимся с программным интерфейсом приложения","self_study":"Если у вас нет Rails-проекта для экспериментов, то создайте его.\n\n\nНапишем небольшой сервис для создания заказов. Для этого вам понадобятся модели товара, корзины и заказа.\n\n* Подключите в Rails-проект гем [responders](https://github.com/heartcombo/responders).\n* Создайте API-метод для получения списка товаров.\n* Создайте методы для работы с корзиной.\n * Метод создания корзины. Метод принимает массив с позициями ID, количество и возвращает ID корзины\n * Метод обновления корзины для добавления новых товаров или удаления\n * Метод получения товаров.\n* Создайте метод создания заказа, он должен получать ID корзины и возвращать код ответа 201 с номером заказа. При создании заказа, корзина удаляется.\n\nВ итоге должен получиться небольшой API сервис с несколькими эндпоинтами.\n","theory_video_provider":"vimeo","theory_video_uid":"628992748","theory":"## Программа урока\n\n* Роутинг. Форматы ответа сервера. Тесты\n* Responders\n* Версионирование API\n\n```ruby\n# Scaffold генерирует в контроллерах методы, которые работают с несколькими форматами\nclass BooksController < ApplicationController\n before_action :set_book, only: %i[ show edit update destroy ]\n\n # Также как с шаблонами, ищется во вью файл для показа в нужном формате (html, json)\n # GET /books or /books.json\n def index\n @books = Book.all\n end\n\n # GET /books/1 or /books/1.json\n def show\n end\n\n # GET /books/new\n def new\n @book = Book.new\n end\n\n # GET /books/1/edit\n def edit\n end\n\n # POST /books or /books.json\n def create\n @book = Book.new(book_params)\n\n respond_to do |format|\n if @book.save\n format.html { redirect_to @book, notice: \"Book was successfully created.\" }\n format.json { render :show, status: :created, location: @book }\n else\n format.html { render :new, status: :unprocessable_entity }\n format.json { render json: @book.errors, status: :unprocessable_entity }\n end\n end\n end\n\n # PATCH/PUT /books/1 or /books/1.json\n def update\n respond_to do |format|\n if @book.update(book_params)\n format.html { redirect_to @book, notice: \"Book was successfully updated.\" }\n format.json { render :show, status: :ok, location: @book }\n else\n format.html { render :edit, status: :unprocessable_entity }\n format.json { render json: @book.errors, status: :unprocessable_entity }\n end\n end\n end\n\n # DELETE /books/1 or /books/1.json\n def destroy\n @book.destroy\n respond_to do |format|\n format.html { redirect_to books_url, notice: \"Book was successfully destroyed.\" }\n format.json { head :no_content }\n end\n end\n\n private\n # Use callbacks to share common setup or constraints between actions.\n def set_book\n @book = Book.find(params[:id])\n end\n\n # Only allow a list of trusted parameters through.\n def book_params\n params.require(:book).permit(:title)\n end\nend\n\nclass BooksController < ApplicationController\n before_action :set_book, only: %i[ show edit update destroy ]\n\n # GET /books or /books.json\n def index\n @books = Book.all\n\n # respond_to переопределяет стандартное поведение\n # запрос к /books.json выводит {\"hi\": \"books\"}\n # https://apidock.com/rails/ActionController/MimeResponds/InstanceMethods/respond_to\n respond_to do |format|\n format.html do\n redirect_to root_path\n end\n format.json do\n render json: { hi: 'Books' }\n end\n end\n end\nend\n\n# format приходит в переменную params\n# {\"controller\":\"books\",\"action\":\"index\",\"format\":\"json\"}\n# bin/rails routes -g books\n# Prefix Verb URI Pattern Controller#Action\n# books GET /books(.:format) books#index\n# POST /books(.:format) books#create\n# new_book GET /books/new(.:format) books#new\n# edit_book GET /books/:id/edit(.:format) books#edit\n# book GET /books/:id(.:format) books#show\n# PATCH /books/:id(.:format) books#update\n# PUT /books/:id(.:format) books#update\n# DELETE /books/:id(.:format) books#destroy\n\n\nclass BooksController < ApplicationController\n before_action :set_book, only: %i[ show edit update destroy ]\n\n # GET /books or /books.json\n def index\n # метод принимает только запросы вида /books.json и отвечает только в json\n respond_to :json\n\n @books = Book.all\n end\nend\n\nclass BooksController < ApplicationController\n before_action :set_book, only: %i[ show edit update destroy ]\n\n def show\n respond_to do |format|\n format.html { redirect_to root_path }\n # При преобразовании вызывается метод to_json()\n # https://apidock.com/rails/ActiveRecord/Serialization/to_json\n format.json { render json: @book.to_json, root: true }\n # root: true кладет сущность в под ключем\n # => {\"book\":{\"id\":1,\"title\":\"example\",\"created_at\":\"2021-11-10T11:57:36.381Z\",\"updated_at\":\"2021-11-10T11:57:36.381Z\"}}\n end\n end\nend\n\nclass BooksController < ApplicationController\n # GET /books/1 or /books/1.json\n def show\n respond_to :json\n # as_json позволяет выводить только определенные поля\n render json: @book.as_json(\n root: true,\n only: :title\n )\n # => {\"book\":{\"title\":\"example\"}}\n end\nend\n\nRails.application.routes.draw do\n resources :books\n\n # api логика лежит отдельно\n namespace :api do\n # изолируем изменения на каждой версии api\n namespace :v1 do\n resources :books\n end\n end\nend\n\n# api_v1_books GET /api/v1/books(.:format) api/v1/books#index\n# POST /api/v1/books(.:format) api/v1/books#create\n# new_api_v1_book GET /api/v1/books/new(.:format) api/v1/books#new\n# edit_api_v1_book GET /api/v1/books/:id/edit(.:format) api/v1/books#edit\n# api_v1_book GET /api/v1/books/:id(.:format) api/v1/books#show\n# PATCH /api/v1/books/:id(.:format) api/v1/books#update\n# PUT /api/v1/books/:id(.:format) api/v1/books#update\n# DELETE /api/v1/books/:id(.:format) api/v1/books#destroy\n\n# app/controllers/api/application_controller.rb\n# Работает для всех версий\n# Перед этим необходимо подключить гем gem \"responders\"\nclass Api::ApplicationController < ApplicationController\n respond_to :json\nend\n\n# app/controllers/api/v1/application_controller.rb\nclass Api::V1::ApplicationController < Api::ApplicationController\nend\n\n# app/controllers/api/v1/books_controller.rb\nclass Api::V1::BooksController < Api::V1::ApplicationController\n # /api/v1/books.json\n def index\n @books = Books.all\n\n # Без гема responders выглядело бы так\n # render json: @books.as_json(only: :title)\n respond_with @books.as_json(only: :title)\n end\nend\n\nclass Api::V1::BooksControllerTest < ActionDispatch::IntegrationTest\n setup do\n @book = books(:one)\n end\n\n test 'should get api index' do\n get api_books_url(format: :json)\n assert_response :success\n end\n\n test 'should get api show' do\n get api_book_url(@book, format: :json)\n assert_response :success\n end\nend\n```\n"},"id":243,"slug":"rails-full","challenges_count":0,"name":"Ruby: Полный Rails","allow_indexing":true,"state":"approved","course_state":"finished","pricing_type":"paid","description":"На этом курсе вы погрузитесь в особенности Ruby on Rails. Вы узнаете о стриминге, Webmock и Rails Engines. В итоге научитесь использовать очереди для обработки тяжелых запросов и кеширование. Это поможет разработать свое API в соответствии с REST архитектурой.","kind":"additional","updated_at":"2026-01-20T11:39:01.186Z","language":"ruby","duration_cache":33900,"skills":["Использовать асинхронные задачи","Строить REST-api","Тестировать код с побочными эффектами","Представлять данные в разных форматах"],"keywords":[],"lessons_count":7,"cover":"https://hexlet.io/rails/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NTk5NywicHVyIjoiYmxvYl9pZCJ9fQ==--887f298cbbb1aea83535ad9973f4e692534eb468/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJwbmciLCJyZXNpemVfdG9fZmlsbCI6WzYwMCw0MDBdfSwicHVyIjoidmFyaWF0aW9uIn19--6067466c2912ca31a17eddee04b8cf2a38c6ad17/image.png"},"recommendedLandings":[{"stack":{"id":475,"slug":"rails","title":"Ruby on 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__m__-_R_rdub_"><style data-mantine-styles="inline">.__m__-_R_6qrdub_{margin-top:0rem;padding-inline:var(--mantine-spacing-xs);width:100%;}@media(min-width: 48em){.__m__-_R_6qrdub_{margin-top:var(--mantine-spacing-xl);width:80%;}}@media(min-width: 62em){.__m__-_R_6qrdub_{padding-inline:var(--mantine-spacing-xl);}}</style><div style="margin-inline:auto;max-width:var(--mantine-breakpoint-xl)" class="__m__-_R_6qrdub_"><div style="color:var(--mantine-color-dimmed)" class="m_4451eb3a mantine-Center-root" data-inline="true"><div style="--ti-size:var(--ti-size-xs);--ti-bg:transparent;--ti-color:var(--mantine-color-indigo-light-color);--ti-bd:calc(0.0625rem * var(--mantine-scale)) solid transparent;margin-inline-end:calc(0.125rem * var(--mantine-scale));color:inherit" class="m_7341320d mantine-ThemeIcon-root" data-variant="transparent" data-size="xs"><svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="tabler-icon tabler-icon-lock "><path d="M5 13a2 2 0 0 1 2 -2h10a2 2 0 0 1 2 2v6a2 2 0 0 1 -2 2h-10a2 2 0 0 1 -2 -2v-6"></path><path d="M11 16a1 1 0 1 0 2 0a1 1 0 0 0 -2 0"></path><path d="M8 11v-4a4 4 0 1 1 8 0v4"></path></svg></div><p style="font-size:var(--mantine-font-size-sm)" class="mantine-focus-auto m_b6d8b162 mantine-Text-root">Ruby: Полный Rails</p></div><h1 style="--title-fw:var(--mantine-h1-font-weight);--title-lh:var(--mantine-h1-line-height);--title-fz:var(--mantine-h1-font-size);margin-bottom:var(--mantine-spacing-xl)" class="m_8a5d1357 mantine-Title-root" data-order="1">Теория: Streaming</h1><script type="application/ld+json">{"@context":"https://schema.org","@type":"LearningResource","name":"Streaming","inLanguage":"ru","isPartOf":{"@type":"LearningResource","name":"Ruby: Полный Rails"},"isAccessibleForFree":"False","hasPart":{"@type":"WebPageElement","isAccessibleForFree":"False","cssSelector":".paywalled"}}</script><div class=""><div style="--alert-color:var(--mantine-color-indigo-light-color);margin-bottom:var(--mantine-spacing-lg);font-size:var(--mantine-font-size-lg)" class="m_66836ed3 mantine-Alert-root" id="mantine-_R_remqrdub_" role="alert" aria-describedby="mantine-_R_remqrdub_-body" aria-labelledby="mantine-_R_remqrdub_-title"><div class="m_a5d60502 mantine-Alert-wrapper"><div class="m_667f2a6a mantine-Alert-icon"><svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="tabler-icon tabler-icon-rocket "><path d="M4 13a8 8 0 0 1 7 7a6 6 0 0 0 3 -5a9 9 0 0 0 6 -8a3 3 0 0 0 -3 -3a9 9 0 0 0 -8 6a6 6 0 0 0 -5 3"></path><path d="M7 14a6 6 0 0 0 -3 6a6 6 0 0 0 6 -3"></path><path d="M14 9a1 1 0 1 0 2 0a1 1 0 1 0 -2 0"></path></svg></div><div class="m_667c2793 mantine-Alert-body"><div class="m_6a03f287 mantine-Alert-title"><span id="mantine-_R_remqrdub_-title" class="m_698f4f23 mantine-Alert-label">Полный доступ к материалам</span></div><div id="mantine-_R_remqrdub_-body" class="m_7fa78076 mantine-Alert-message"><div style="--group-gap:var(--mantine-spacing-md);--group-align:center;--group-justify:space-between;--group-wrap:wrap" class="m_4081bf90 mantine-Group-root"><p class="mantine-focus-auto m_b6d8b162 mantine-Text-root">Зарегистрируйтесь и получите доступ к этому и десяткам других курсов</p><a style="--button-height:var(--button-height-xs);--button-padding-x:var(--button-padding-x-xs);--button-fz:var(--mantine-font-size-xs);--button-bg:linear-gradient(45deg, var(--mantine-color-blue-filled) 0%, var(--mantine-color-cyan-filled) 100%);--button-hover:linear-gradient(45deg, var(--mantine-color-blue-filled) 0%, var(--mantine-color-cyan-filled) 100%);--button-color:var(--mantine-color-white);--button-bd:none" class="mantine-focus-auto mantine-active m_77c9d27d mantine-Button-root m_87cf2631 mantine-UnstyledButton-root" data-variant="gradient" data-size="xs" href="/u/new"><span class="m_80f1301b mantine-Button-inner"><span class="m_811560b9 mantine-Button-label">Зарегистрироваться</span></span></a></div></div></div></div></div><div class="paywalled m_d08caa0 mantine-Typography-root"><h2 id="heading-2-1">Программа урока</h2>
<ul>
<li>Streaming шаблонов в Rails</li>
<li>Streaming файлов в Rails</li>
<li>Streaming vs Live в Rails</li>
</ul>
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def index
@books = Book.all
# Включение стриминга шаблонов
# https://api.rubyonrails.org/classes/ActionController/Streaming.html
render stream: true
end
end
# при запросе с помощью Curl данные будут отдаваться постепенно
class HelloController < ActionController::Base
include ActionController::Live
def stream
response.headers['Content-Type'] = 'text/event-stream'
response.headers["Last-Modified"] = Time.current.httpdate
100.times {
response.stream.write "hello world\n"
sleep 1
}
ensure
response.stream.close
end
end
# https://api.rubyonrails.org/v5.1.7/classes/ActionController/DataStreaming.html
class BooksController < ActionController::Base
include ActionController::Live
def send_file
# Используется для отправки готового файла
send_file(Rails.root.join('public', '404.html'), filename: 'hello.txt')
end
# https://api.rubyonrails.org/v5.1.7/classes/ActionController/DataStreaming.html
def send_data
# Отправляется стриминговый файл, которого изначально нет
data = 'Hello'
send_data(data, filename: 'hello.txt')
end
end</code></pre></div></div></div><button class="mantine-focus-auto m_c9378bc2 mantine-CodeHighlight-showCodeButton m_87cf2631 mantine-UnstyledButton-root" data-hidden="true" type="button">Expand code</button></div></div><div style="margin-block:var(--mantine-spacing-xl)" class=""><h2 style="--title-fw:var(--mantine-h2-font-weight);--title-lh:var(--mantine-h2-line-height);--title-fz:var(--mantine-h2-font-size);margin-bottom:var(--mantine-spacing-md)" class="m_8a5d1357 mantine-Title-root" data-order="2">Рекомендуемые программы</h2><style data-mantine-styles="inline">.__m__-_R_2mremqrdub_{--carousel-slide-gap:var(--mantine-spacing-xs);--carousel-slide-size:70%;}@media(min-width: 36em){.__m__-_R_2mremqrdub_{--carousel-slide-gap:var(--mantine-spacing-xl);--carousel-slide-size:50%;}}</style><div style="--carousel-control-size:calc(2.5rem * 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