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View script.rb
| require "mongoid" | |
| require "shrine" | |
| require "shrine/storage/memory" | |
| require "stringio" | |
| Mongoid.configure do |config| | |
| config.clients.default = { hosts: ['localhost:27017'], database: 'my_db' } | |
| config.log_level = :debug | |
| end |
janko
/ 01-activerecord.rb
Created May 27, 2015
PostgreSQL JSON querying in Sequel (my presentation from our local Ruby meetup)
View 01-activerecord.rb
| require "active_record" | |
| ActiveRecord::Base.establish_connection('postgres:///testing') | |
| ActiveRecord::Migration.verbose = false | |
| ActiveRecord::Migration.class_eval do | |
| create_table :played_quizzes, force: true do |t| | |
| t.integer :player_ids, array: true | |
| t.json :quiz_snapshot | |
| end |
janko
/ shrine-cli.rb
Created Mar 24, 2020
The CLI I wrote for creating new AWS S3 buckets for reproducing issues reported for Shrine. It's can serve as an example for programmatically creating new S3 buckets with bucket-specific credentials.
View shrine-cli.rb
| #!/usr/bin/env ruby | |
| require "dry/cli" | |
| require "aws-sdk-s3" | |
| require "aws-sdk-iam" | |
| require "json" | |
| ENV["AWS_ACCESS_KEY_ID"] = "..." |
janko
/ 1-activerecord.rb
Last active Jan 28, 2020
INSERTing 50,000 records into a database in ActiveRecord, Arel, SQL, activerecord-import and Sequel.
View 1-activerecord.rb
| require "active_record" | |
| ActiveRecord::Base.establish_connection(adapter: "sqlite3", database: ":memory:") | |
| ActiveRecord::Migration.class_eval do | |
| create_table(:records) do |t| | |
| t.string :column | |
| end | |
| end | |
| data = 50_000.times.map { |i| Hash[column: "Column #{i}"] } |
janko
/ application_controller.rb
Last active Oct 31, 2019
Simpler implementation of ActionController::Live
View application_controller.rb
| class ApplicationController < ActionController::Base | |
| private | |
| def stream_body(async: false, **options, &block) | |
| self.status ||= 200 | |
| self.headers["Cache-Control"] = "no-cache" | |
| self.headers.delete("Content-Length") | |
| stream_class = async ? AsyncStream : Stream |
View results
| width, imagemagick, libvips | |
| 1000, 0.129, 0.045 | |
| 1500, 0.190, 0.067 | |
| 2000, 0.276, 0.054 | |
| 2500, 0.380, 0.068 | |
| 3000, 0.498, 0.085 |
janko
/ 01-safe-download.rb
Last active Jul 24, 2019
A safe way in Ruby to download a file to disk using open-uri (with/without comments)
View 01-safe-download.rb
| require "open-uri" | |
| require "net/http" | |
| Error = Class.new(StandardError) | |
| DOWNLOAD_ERRORS = [ | |
| SocketError, | |
| OpenURI::HTTPError, | |
| RuntimeError, | |
| URI::InvalidURIError, |
janko
/ 01-presentation.md
Last active Jun 6, 2019
PostgreSQL full-text search capabilites (my presentation from our local Ruby meetup)
View 01-presentation.md
View script.rb
| Value = Struct.new(:value) do | |
| def coerce(other) | |
| puts "called #{self}#coerce(#{other.inspect})" | |
| [Value.new(other), self] | |
| end | |
| def +(other) | |
| puts "called #{self} + #{other.inspect}" | |
| end |
View Gemfile
| source "https://rubygems.org" | |
| gem "roda" | |
| gem "http", "~> 3.3" | |
| gem "rest-client" | |
| gem "httparty" |
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