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I am trying to retrieve key value pairs defined on two different .yml files. Is it possible to do so in a single Ruby file ?

user3231104
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1 Answers1

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Sure. Try this:

require 'yaml'
file1 = YAML.load_file("/home/abdo/settings.yml")
file2 = YAML.load_file("/home/abdo/database.yml")

This is an example I'm using in Rails to load a settings file:

SETTINGS = YAML.load_file("#{Dir.pwd}/config/settings.yml")[Rails.env]

If you want to load multiple files in 1 hash, you can do the following:

files = %w(database.yml settings.yml)
yamls = files.map { |f| YAML.load_file("#{Dir.pwd}/config/#{f}") }
H = files.each_with_object({}).with_index { |(e, hash), i| hash[e] = yamls[i] }

You can access H["database.yml"] to get the Hash representing the file with name database.yml

If you want to load a list of files following a certain pattern in a directory, you can use Dir.glob as mentioned in Iterate through every file in one directory

EDIT If your YAML files have non-conflicting data (data that does not get overridden when merged) and you'd like to merge all of them in a single Hash, you can do:

yamls.inject({}) { |hash, yaml| hash.merge(yaml) }
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Abdo
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  • Thank you Abdo, The problem we are facing in our project is that there are 25-30 .yml configuration files. Is there any way for us to merge all the data present in these files in some way so that it can referenced by a single referencing variable ? We do not want to use a single .yml file for maintainability. – user3231104 Feb 20 '14 at 09:52
  • Code updated above =) – Abdo Feb 20 '14 at 10:46