rails中的载波不支持多张图片上传

class Post < ApplicationRecord
  has_many :images
  accepts_nested_attributes_for :images
end

class Image < ApplicationRecord
  belongs_to :post
  mount_uploader :image, ImageUploader
end

<%= form_for @post do |f| %>
  <%= f.fields_for :images do |image_fields| %>
    <%= image_fields.file_field :image %>
  <% end %>
  <%= f.submit %>
<% end %>

class PostsController < ApplicationController
  def create
    @post = Post.new(post_params)
    # ...
  end

  def update
    @post = Post.find(params[:id])
    @post.update(post_params)
    # ...
  end

  private

  def post_params
    params.require(:post).permit(:title, images_attributes: [:id, :image])
  end
end