渲染 json 中的 Rails Active Storage 图像链接

Question

How could I render a json with my posts (each one have an attachment) with their image url?我怎么能用我的帖子（每个帖子都有一个附件）和他们的图片网址渲染一个json？

def index
  @posts = Post.all
  render json: { posts: @posts }, include: :image # Image is the attachment
end

I have this, but I know this is not going to work due to I need the image URL我有这个，但我知道这行不通，因为我需要图片 URL

Answer 1

json.jbuilder view files can help here json.jbuilder 视图文件可以在这里提供帮助

app/view/posts/index.json.jbuilder应用程序/视图/帖子/index.json.jbuilder

json.array! @posts, partial: 'post', as: :post

app/view/posts/_post.json.jbuilder应用程序/视图/帖子/_post.json.jbuilder

json.id post.id
json.image_url url_for(post.image) if post.image.attached?
//all other fields you need

Answer 2

Rails is literally the opposite of elegant. Rails 是优雅的对立面。 All of this should not be necessary in a modern framework.在现代框架中，所有这些都不是必需的。