crashtech

# This is the PEG-based grammar for GraphQL based on:
# https://spec.graphql.org/October2021/#sec-Document-Syntax
#
# It is also inspired by another PEG grammar of GraphQL for JavaScript:
# https://github.com/madjam002/graphqlite/blob/master/grammar.pegjs
#
# This only complies with the GraphQL spec with no further additions, focusing
# only the **Executable Definitions**, to optimize the output and processing

grammar Rails.GraphQL.Parser

crashtech

Small Crunchy Finger Basket
{"ref":"MenuItem:06129e99-923f-4e0d-8863-f4f295b5f419","id_field":"guid","pos_active":true,"title":"Small Crunchy Finger Basket","price":9.55,"image_url":"https://s3.amazonaws.com/toasttab/restaurants/restaurant-26036000000000000/menu/items/3/item-400000004246731573_1582403485.jpg","description":"3 fingers with 1 sauce and french fries.","tax_rate":15.5,"observation_flags":{"suspend_until_flags":{"sold_out_in_pos":"observed"},"alcohol_problems":{"observed_missing_alcohol_state_from_pos":"observed"}}}

Classic Fries
{"ref":"MenuItem:a9537c02-dc72-45a2-bddd-a8da9af5263d","id_field":"guid","pos_active":true,"title":"Classic Fries","price":4.45,"image_url":"https://s3.amazonaws.com/toasttab/restaurants/restaurant-26036000000000000/menu/items/2/item-400000004249845722_1582410894.jpg","description":"3/8th\" straight cut fries with crispy batter.","tax_rate":15.5,"observation_flags":{"suspend_until_flags":{"sold_out_in_pos":"observed"},"alcohol_problems":{"observed_missing_alcohol_state_f

crashtech

CHECKERS = {
  'cats'        => :>,
  'trees'       => :>,
  'pomeranians' => :<,
  'goldfish'    => :<,
}

def find_aunt(criteria, input)
  input.scan(/Sue (\d+): (.*)\n/).find do |(number, data)|
    break number if data.scan(/(\w+): (\d+)/).all? do |(item, value)|

crashtech

# app/models/topic.rb
class Topic < ApplicationRecord
  self.table_name = 'topic'
  
  ## Associations
  has_many :posts
  
  ## Validations
  validates :name, presence: true
end

crashtech

Ruby on Rails, from MVC to GraphQL

As a Ruby on Rails developer, I'm always looking for the best tools and practices to apply to my day-to-day development. This framework has a fantastic structure where all its inner parts communicate very well. But, as applications start growing, or developers want to start using more modern technologies, several things start getting out of control.

Recent versions of Rails implemented Webpack, facilitating the use of modern JavaScript frameworks, which added another level of robustness to everyone's applications. Not only is this becoming the new standard, but it also enables bigger code-bases without falling into madness.

Facebook, as the creator of ReactJS (one of these modern JS frameworks and the most popular one) introduced to the world another of its technologies, GraphQL. This tool, like any other tool, can be a great asset, as long as it's in the right hands, meaning that you first need to know what role it plays before exploring how to use it in your RoR appli

crashtech

SELECT "stories"."id"                     AS "Id",
       "stories"."title"                  AS "Title",
       "stories"."publication_id"         AS "Publication Id",
       "publications"."name"              AS "Publication Name",
       "story_authors"."authors"          AS "Authors",
       "stories"."date"                   AS "Date",
       "stories"."media_type"             AS "Media Type",
       "stories"."url"                    AS "URL",
       "stories"."length"                 AS "Length",
       "stories"."solutions_3"            AS "Solutions 3",

crashtech

def cosine_distance(this, that)
  return 1.0 if this === that

  a_vector = Hash.new(0).tap{ |v| this.each{ |e| v[e] += 1 } }
  b_vector = Hash.new(0).tap{ |v| that.each{ |e| v[e] += 1 } }

  a_mag = 0.0
  product = a_vector.inject(0.0) do |total, (key, value)|
    a_mag += value ** 2
    total += value * b_vector[key]

crashtech

SELECT "orders"."id"                                                                  AS t0_r0,
       "orders"."customer_id"                                                         AS t0_r1,
       "orders"."vendor_id"                                                           AS t0_r2,
       "orders"."billing_address_id"                                                  AS t0_r3,
       "orders"."shipping_address_id"                                                 AS t0_r4,
       "orders"."status"                                                              AS t0_r5,
       "orders"."partner_order_number"                                                AS t0_r6,
       "orders"."created_at"                                                          AS t0_r7,
       "orders"."updated_at"                                                          AS t0_r8,
       "orders"."description"                                                         AS t0_r9,

crashtech

+ 1491966648.266378976 /scripts/cli : __rvm_parse_args()  749 > [[ -z '' ]]
+ 1491966648.271087905 /scripts/cli : __rvm_parse_args()  749 > [[ -n '' ]]
+ 1491966648.275022367 /scripts/cli : __rvm_parse_args()  752 > [[ error == '' ]]
+ 1491966648.278861310 /scripts/cli : __rvm_parse_args()  752 > [[ 0 -eq 1 ]]
+ 1491966648.282690210 /scripts/cli : __rvm_parse_args()  752 > [[ -n '' ]]
+ 1491966648.286148429 /scripts/cli : __rvm_parse_args()  15 > [[ -n use ]]
+ 1491966648.289327313 /scripts/cli : __rvm_parse_args()  17 > rvm_token=use
+ 1491966648.292945688 /scripts/cli : __rvm_parse_args()  19 > ((  1 > 0  ))
+ 1491966648.296664270 /scripts/cli : __rvm_parse_args()  21 > next_token=/home/poc.myadmin.dev/
+ 1491966648.300582448 /scripts/cli : __rvm_parse_args()  22 > shift

crashtech

# Transform a possible multi-dementional array into one-dimentional array
# It returns nil if the giver argument is not an array
def flatten(arr)
  return nil unless arr.is_a?(::Array)

  # Store the extracted values in the result
  result = []

  # Iterate over the elements appending or merging the parts
  arr.each do |part|