CODEWITHSUNDEEP
ruby-on-railsyaml
Hassen
Hassen

Reputation: 7664

Rails + YAML : Parsing error when loading YAML data from application.yml

To seed my database with airport names, I use application.yml to define a collection of airports:

AIRPORTS:
  - name: "Charles de Gaulle"
    city: "Paris"
    country: "France"
  - name: "Orly"
    city: "Paris"
    country: "France"

Using Rails Command (rails c) to test, I have:

2.0.0-p247 :001 > ENV['AIRPORTS']
 => "[{\"name\"=>\"Charles de Gaulle\", \"city\"=>\"Paris\", \"country\"=>\"France\"}, {\"name\"=>\"Orly\", \"city\"=>\"Paris\", \"country\"=>\"France\"}]"

which is a string! Then, when typing the following, I have an error:

2.0.0-p247 :002 > YAML.load(ENV['AIRPORTS'])
Psych::SyntaxError: (<unknown>): did not find expected ',' or '}' while parsing a flow mapping at line 1 column 2
from /Users/Hassen/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/psych.rb:205:in `parse'
from /Users/Hassen/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/psych.rb:205:in `parse_stream'
from /Users/Hassen/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/psych.rb:153:in `parse'
from /Users/Hassen/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/psych.rb:129:in `load'
from (irb):2
from /Users/Hassen/.rvm/gems/ruby-2.0.0-p247/gems/railties-3.2.13/lib/rails/commands/console.rb:47:in `start'
from /Users/Hassen/.rvm/gems/ruby-2.0.0-p247/gems/railties-3.2.13/lib/rails/commands/console.rb:8:in `start'
from /Users/Hassen/.rvm/gems/ruby-2.0.0-p247/gems/railties-3.2.13/lib/rails/commands.rb:41:in `<top (required)>'
from script/rails:6:in `require'
from script/rails:6:in `<main>'

What I'm expecting (what I want) is to have an array of objects, so I can seed my database with the following code:

YAML.load(ENV['AIRPORTS']).each do |airport|
    AirPort.create airport
    puts 'airport created: ' << airport.name
end

Thanks,

Upvotes: 1

Views: 1025

Answers (1)

tadejm
tadejm

Reputation: 184

Using figaro gem this would do the trick:

(eval ENV["AIRPORTS"]).each do |params|
  Airport.create! params
  puts "Airport created: #{params["name"]}"

I usually use a simple initializer load_config.rb like:

YAML.load_file(Rails.root.join('config', 'application.yml'))['AIRPORTS'].each |params|
  Airport.create! params
  puts "Airport created #{params['name']}"
end

Upvotes: 1

Related Questions