codesnips

active-storage

ruby 
# Installation
# rails active_storage:install
# rails db:migrate

# config/storage.yml
local:

ActiveStorage for file uploads and attachments

ruby rails active-storage
by Sarah Mitchell 2 tabs
erb 
<%= form_with model: @document, data: { controller: "upload" } do |form| %>
  <div class="field">
    <%= form.label :file, "Attach a document" %>
    <%= form.file_field :file,
          direct_upload: true,
          data: { upload_target: "input" } %>

Active Storage direct upload progress with Stimulus

rails hotwire stimulus
by codesnips 3 tabs
ruby 
class DownloadsController < ApplicationController
  before_action :authenticate_user!

  def show
    report = current_account.reports.find(params[:report_id])
    authorize! :download, report

Signed, Expiring S3 Download URLs for Active Storage Attachments in Rails

rails active-storage s3
by codesnips 4 tabs
ruby 
class AttachmentContentTypeValidator < ActiveModel::EachValidator
  SIGNATURES = {
    "image/png"       => ["\x89PNG\r\n\x1a\n".b],
    "image/jpeg"      => ["\xFF\xD8\xFF".b],
    "image/gif"       => ["GIF87a".b, "GIF89a".b],
    "application/pdf" => ["%PDF-".b]

Safer File Attachments: Content Type + Size Validation

rails security active-storage
by codesnips 4 tabs