CODEWITHSUNDEEP
ruby-on-railsruby
user664859
user664859

Reputation: 153

How to create configuration files based on ruby

How can I manipulate params in a more DSL way per country where each country has its own logic for province variable.

I would like to organise it better: - create a configuration file per per each country.
- if files not exist than there will be a default file - and each file is a ruby file that province parameter can be manipulated via ruby code which gives flexibility.

currently I do it in in the controller like this:

before_filter :modify_location_params, :only => [:create]

def location_params
  params.require(:location).permit(
    origin:               [:name, :country, :city, :state, :postal_code, :address1, :address2,:province],
    destination:          [:name, :country, :city, :state, :postal_code, :address1, :address2,:province],
  )
end


def modify_location_params
  [:origin, :destination].each do |location|
    unless (params[:location][location][:country].downcase =~ /(Sweden|sw)/).nil?

      params[:location][location][:province] = 'SW'
    end
    unless (params[:location][location][:country].downcase == 'IL' && some_other_condition == true 

      params[:location][location][:city] = 'OM'
      params[:location][location][:name] = 'some name'
    end
  end
end

Yes, I can do it in a switch/if statements but I think that since I have a lot of countries it would be a better way of doing a DSL like system for this manipulating. any ideas how implement such?

Upvotes: 0

Views: 104

Answers (2)

jcm
jcm

Reputation: 1789

If I understand correctly you want to add different key-value pairs to a hash depending on the :country value in that hash. If so then a YAML file should work.

Say you have the following in a YAML file

# country_details.yaml
sweden:
    province: 'SW'
il:
    city: 'OM'
    name: 'some name'

Then you can define a method

def country_details(country)
  parsed_yaml = YAML::load(File.open('path/to/file'))
  details = parsed_yaml[country]
end

that you use like so

details = country_details('SW')
params[:location][location].merge! details

Upvotes: 0

SomeSchmo
SomeSchmo

Reputation: 665

Not totally sure I understand what you're trying to do, but if you just want different implementations of a similar method for each country you could make a class for each one and have them inherit from a parent country class. Something like

class Country
  def as_origin
    #default code
  end
end

class Sweden < Country
  def as_origin
    #override default code here
  end
end

There's also a bunch of good gems to help with country information if you want to avoid doing it all by hand

Upvotes: 1

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