| require "net/http" | |
| def start_server | |
| # Remove the X to enable the parameters for tuning. | |
| # These are the default values as of Ruby 2.2.0. | |
| @child = spawn(<<-EOC.split.join(" ")) | |
| XRUBY_GC_HEAP_FREE_SLOTS=4096 | |
| XRUBY_GC_HEAP_INIT_SLOTS=10000 | |
| XRUBY_GC_HEAP_GROWTH_FACTOR=1.8 | |
| XRUBY_GC_HEAP_GROWTH_MAX_SLOTS=0 |
| # lets say this is the response we receive | |
| response = { | |
| "results" => { | |
| "total_count" => 15, | |
| "per_page" => 100, | |
| "companies" => [ | |
| { | |
| "company" => { | |
| "name" => "Foo Bar Ltd", | |
| "registered_address" => { ... }, |
First, Create a folder inside of lib called seeds
Put your CSV file example.csv into the lib/seeds folder. In the example below, the file is called real_estate_transactions.csv
Make sure you've created a resource with the appropriate columns to match your seed data. The names don't have to match up.
| function mapValues(obj, fn) { | |
| return Object.keys(obj).reduce((result, key) => { | |
| result[key] = fn(obj[key], key); | |
| return result; | |
| }, {}); | |
| } | |
| function pick(obj, fn) { | |
| return Object.keys(obj).reduce((result, key) => { | |
| if (fn(obj[key])) { |
| # this is a dirty implementation of logger that | |
| # compiles AR queries with trace into /last_request_log.html | |
| # the snippet is useful when optimizing performance of the endpoint | |
| class QueryLogSubscriber < ActiveSupport::LogSubscriber | |
| TRACE_LEVEL = :app | |
| LINES = 5 | |
| IGNORE_CACHED_QUERIES = false | |
| def initialize |
| { | |
| "keys": ["tab"], | |
| "command": "expand_abbreviation_by_tab", | |
| // put comma-separated syntax selectors for which | |
| // you want to expandEmmet abbreviations into "operand" key | |
| // instead of SCOPE_SELECTOR. | |
| // Examples: source.js, text.html - source | |
| "context": [ | |
| { |
| require 'monitor' | |
| class IdWorker | |
| attr_reader :worker_id, :datacenter_id, :reporter, :logger, :sequence, :last_timestamp | |
| TWEPOCH = 1288834974657 | |
| WORKER_ID_BITS = 5 | |
| DATACENTER_ID_BITS = 5 | |
| MAX_WORKER_ID = (1 << WORKER_ID_BITS) - 1 |
You don't need Paperclip or Carrierwave or even an ActiveRecord model to manage file uploads in Rails if all you need to do is read the file in and extract data from it.
The Catalog class (referenced in the UploadController#create method) knows how to read a JSON file, translate and extract the data therein, and create or modify Book and Product records in the surrounding application.
By using the FileUtils.cp class method, we move the uploaded file into a known location at a known filename, so the Catalog (PORO) can do its work. The tempfile created by Rack during the upload is harvested as normal by garbage collection, but the copy we made is deleted manually after the parsing process is completed.
| gem 'devise' | |
| # ENV variable management | |
| gem 'figaro' | |
| # OmniAuth Authentication providers | |
| gem 'omniauth-google-oauth2' | |
| gem 'omniauth-facebook' | |
| group :development, :test do |
Code is clean if it can be understood easily – by everyone on the team. Clean code can be read and enhanced by a developer other than its original author. With understandability comes readability, changeability, extensibility and maintainability.
