Blueprinter gem - 渲染 STI 集合

Question

我正在尝试使用新的序列化替代方案： Blueprinter

在每个 model 都是某种视图的情况下，您如何处理 STI 集合？

我想出了这样的事情（在 AMS github 问题上看到了类似的代码）：

def serialize_cards(cards)
  cards.group_by(&:type).map do |type, cards|
    case type
    when 'TypeOneCard' then Api::V1::CardBlueprint.render(cards, view: :one)
    when 'TypeTwoCard' then Api::V1::CardBlueprint.render(cards, view: :two)
    else  raise ArgumentError, "Unhandled event type '#{type}'"
    end
  end
end

为什么 output 在带有反斜杠的字符串中：

[
    "[{\"id\":27566,\"attachment\":null,\"avatar\":null,\"card_comments_count\":0,\"card_likes_count\":0,\"card_publisher\":\"group\",\"created_at\":\"2020-11-18T10:24:42.195+01:00\",\"description\":\"Ted, how many times have I told you to put the lid back on the peanut butter jar?! It’s this inconsiderate, immature jackassery that makes me feel like I’m living in The Real World House! And not the early days when they all had jobs and social consciences, I’m talking about Hawaii, and after!\",\"ends_at\":\"2021-02-06T23:55:00.000+01:00\",\"event_attendees_count\":0,\"group_name\":\"Cheeseburger - Herbes de Provence\",\"origin\":\"http://localhost:3000/dorfplatz/3\",\"origin_name\":\"Dardagny - Athenaz (Avusy)\",\"picture\":null,\"starts_at\":\"2020-11-21T00:00:00.718+01:00\",\"title\":\"The Doors\",\"type\":\"EventCard\",\"updated_at\":\"2020-11-19T10:25:49.467+01:00\",\"user_full_name\":\"Carolann Ritchie\"},{\"id\":28163,\"attachment\":null,\"avatar\":null,\"card_comments_count\":0,\"card_likes_count\":0,\"card_publisher\":\"group\",\"created_at\":\"2020-11-14T23:22:42.059+01:00\",\"description\":\"That’s life, you know, we never end up where you thought you wanted to be.\",\"ends_at\":\"2020-12-05T23:55:00.000+01:00\",\"event_attendees_count\":0,\"group_name\":\"Cheeseburger - Herbes de Provence\",\"origin\":\"http://localhost:3000/dorfplatz/3\",\"origin_name\":\"Dardagny - Athenaz (Avusy)\",\"picture\":null,\"starts_at\":\"2020-11-14T00:00:00.942+01:00\",\"title\":\"Iron Maiden\",\"type\":\"EventCard\",\"updated_at\":\"2020-11-19T10:25:59.622+01:00\",\"user_full_name\":\"Reuben Kertzmann\"},{\"id\":24658,\"attachment\":null,\"avatar\":null,\"card_comments_count\":0,\"card_likes_count\":0,\"card_publisher\":\"group\",\"created_at\":\"2020-11-14T14:40:45.442+01:00\",\"description\":\"You can’t just skip ahead to where you think your life should be.\",\"ends_at\":\"2021-02-04T23:55:00.000+01:00\",\"event_attendees_count\":0,\"group_name\":\"Cheeseburger - Herbes de Provence\",\"origin\":\"http://localhost:3000/dorfplatz/3\",\"origin_name\":\"Dardagny - Athenaz (Avusy)\",\"picture\":null,\"starts_at\":\"2020-11-19T00:00:00.811+01:00\",\"title\":\"Steely Dan\",\"type\":\"EventCard\",\"updated_at\":\"2020-11-19T10:24:58.452+01:00\",\"user_full_name\":\"Reuben Kertzmann\"}]",

Answer 1

使用render_to_hash而不是将每个序列化器输出为 JSON

def serialize_cards(cards)
  cards.group_by(&:type).map do |type, cards|
    case type
    when 'TypeOneCard' 
      Api::V1::CardBlueprint.render_to_hash(cards, view: :one)
    when 'TypeTwoCard' 
      Api::V1::CardBlueprint.render_to_hash(cards, view: :two)
    else  
      raise ArgumentError, "Unhandled event type '#{type}'"
    end
  end
end