[Rails] Re: ActiveStorage::DirectUploadsController - Cannot POST /rails/active_storage/direct_uploads

Ruby on Rails Wednesday, October 31, 2018

On Wednesday, 31 October 2018 11:13:27 UTC+1, belgoros wrote:

I tried to use dire upload way from Ember app to Rails API and used ember-active-storage add-on. Rails responds with the following error when I tried to attach a file:

Cannot POST /rails/active_storage/direct_uploads
404 - Resource was not found.

All Rails controller are protected with before_action filter defined in ApplicationController:

class ApplicationController < ActionController::API before_action :authorize_request attr_reader :current_user private def authorize_request @current_user = (AuthorizeApiRequest.new(request.headers).call)[:user] end end

I inspected the headers used when posting the request, - it seems to be OK and contains Authorization:

Authorization:
Bearer eyJhbG.....

and the request payload:

blob: {filename: "Screenshot 2018-10-31 at 10.45.21.png", content_type: "image/png", byte_size: 110466,…}
byte_size: 110466
checksum: "L+1wS2rPR7cKkXP/Rb/rig=="
content_type: "image/png"
filename: "Screenshot 2018-10-31 at 10.45.21.png"

What's wrong with that ? Thank you.

Here is what I found on the Net and it helped to move forward but there are still some errors:

I created DirectUploadsController by extending it from ActiveStorage::DirectUploadsController as follows:

class DirectUploadsController < ActiveStorage::DirectUploadsController
  protect_from_forgery with: :exception
  skip_before_action :verify_authenticity_token
end

I defined a new route corresponding to the post request to the above route:

Rails.application.routes.draw do
  resources :posts
  post '/rails/active_storage/direct_uploads' => 'direct_uploads#create'
end

I modified the Post serializer as follows:

class PostSerializer < ActiveModel::Serializer
  include Rails.application.routes.url_helpers


  attributes :id, :title, :body, :tag_ids, :archived, :photo


  def photo
    url_for(object.photo) if object.photo.attached?
  end
end

Here is Post model:

class Post < ApplicationRecord
  serialize :tag_ids, Array
  validates :title, :body, :tag_ids, presence: true


  has_one_attached :photo
end

And finally PostsController has a new strong_parameter attribute - photo:

def create
    @post = Post.new(post_params)


    if @post.save
      render json: @post, status: :created, location: @post
    else
      respond_with_errors @post
    end
  end


def post_params
      ActiveModelSerializers::Deserialization.jsonapi_parse!(params,
        only: [:title, :body, :tag_ids, :archived, :photo])
end

But when posting a new Post data, there are still errors:

Started POST "/posts" for 127.0.0.1 at 2018-10-31 16:26:48 +0100

Processing by PostsController#create as JSONAPI

Parameters: {"data"=>{"attributes"=>{"title"=>"post-1", "body"=>"azertyui", "archived"=>true, "tag_ids"=>[12], "photo"=>"eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaHBEZz09IiwiZXhwIjpudWxsLCJwdXIiOiJibG9iX2lkIn19--6209e9184fe8b05b5ce883ac1d38cfde6925c16b"}, "type"=>"posts"}}

ActiveStorage::Blob Load (0.2ms) SELECT "active_storage_blobs".* FROM "active_storage_blobs" WHERE "active_storage_blobs"."id" = ? LIMIT ? [["id", 9], ["LIMIT", 1]]

↳ app/controllers/posts_controller.rb:18

(0.0ms) begin transaction

↳ app/controllers/posts_controller.rb:18

(0.0ms) commit transaction

↳ app/controllers/posts_controller.rb:18

(0.0ms) begin transaction