Rails: Uploading images with Shrine.rb · Cody Lopez
Introduction Shrine is file uploading library written in Ruby, it’s compatible with plain ol’ Ruby, Rails, Hanami, and any other Rack-based web framework. You should use Shrine if you are starting a new project or want to upgrade your existing solution to use something more flexible than carrierwave, paperclip or refile. Shrine is a library for file uploading and provides tools to build plugins on
5日かかる計算だった100万近くある画像のアップロードを3時間弱にした話 - Qiita
この記事はなに？ ベーシック Advent Calendar 2016 20日目です。 機会があって100万枚近い画像を3時間弱でアップロードできるアップローダを作成しました。今回はアップローダを作成する際の手法をご紹介したいと思います！ そもそも何故やることになったのか 僕の携わっているサービスが全面リニューアルをおこなっているのですが、要件の中に、MongoDBからMySQLに乗り換えるというものがありました。その際に大量にある画像を下記理由から再アップロードする必要が出てきました。 MongoDBからMySQLへの変更に伴い、データの持ち方が大きく変わったので、画像パスを再登録する必要があった。 画像を保存しているディレクトリ構造がいけてなく、S3上での検索が困難だったので整えたかった。 また、画像のアップロード作業をする際は、サービスを一時停止、また万が一の為にやり直しをするバッフ
Better File Uploads with Shrine: Processing
October 31, 2016 Better File Uploads with Shrine: Processing Whenever we accept file uploads, we usually want to apply some processing to the files before storing them to permanent storage. We might want to generate image thumbnails optimize images transcode videos extract video screenshots … One approach is to process files on-the-fly, which is suitable for fast processing such as image resizing.
File Uploads in Merb versus Rails
2007-10-02 At FiveRuns, we have a set of installed clients which upload data to our service periodically. Because of the way it is implemented, Rails is quite slow in handling file uploads. Merb is an alternative, albeit much simpler, stack to Rails which handles file uploads in a much saner manner. The performance difference is quite large. Optimizations Merb -- turned off ActiveRecord, environme
Better File Uploads with Shrine: Motivation
September 11, 2016 Better File Uploads with Shrine: Motivation It’s been over a year since I started working on Shrine, and during that time Shrine has acquired a lot of cool features, the ecosystem has grown significantly, and many people are already using Shrine in production. Before I go in depth explaining all the cool things that you can do with Shrine, I thought it would be good to take a st
Really fast CSV imports with Rails and PostgreSQL
Let’s say that we have to import data from some social network. We will be provided with CSV file generated every 5 minutes containing list of posts that were added/liked/commented since the beginning of the day together with likes’ and comments’ counts for each post. As you can imagine the file will grow in size during the day; also we are looking at not only inserting new posts but also updating
Home | Shrine
class Photo < Sequel::Model include Shrine::Attachment(:image) end photo = Photo.create(image: file) photo.image #=> #<Shrine::UploadedFile> photo.image_url #=> "https://my-bucket.s3.amazonaws.com/6bfafe89748ee135.jpg" photo.image.id #=> "6bfafe89748ee135.jpg" photo.image.storage #=> #<Shrine::Storage::S3> photo.image.metadata #=> { "size" => 749238, "mime_type" => "image/jpeg", "filename" => "nat
Action View Form Helpers — Ruby on Rails Guides
Forms are a common interface for user input in web applications. However, form markup can be tedious to write and maintain because of the need to handle form controls, naming, and attributes. Rails simplifies this by providing view helpers, which are methods that output HTML form markup. This guide will help you understand the different helper methods and when to use each. After reading this guide
Read Ruby: A Free, 19 Chapter Ruby 1.9 Reference Guide
In math, a unary operation is an operation with a single input. In Ruby, a unary operator is an operator which only takes a single ‘argument’ in the form of a receiver. For example, the – on -5 or ! on !true. In contrast, a binary operator, such as in 2 + 3, deals with two arguments. Here, 2 and 3 (which become one receiver and one argument in a method call to +). Ruby only has a handful of unary
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GitHub - thoughtbot/paperclip: Easy file attachment management for ActiveRecord
GitHub - carrierwaveuploader/carrierwave: Classier solution for file uploads for Rails, Sinatra and other Ruby web frameworks