Ruby: Create hash with default keys + values of an array

Question

I believe this has been asked/answered before in a slightly different context, and I've seen answers to some examples somewhat similar to this - but nothing seems to exactly fit.

I have an array of email addresses:

@emails = ["test@test.com", "test2@test2.com"]

I want to create a hash out of this array, but it must look like this:

input_data = {:id => "#{id}", :session => "#{session}", 
              :newPropValues => [{:key => "OWNER_EMAILS", :value => "test@test.com"} , 
                                 {:key => "OWNER_EMAILS", :value => "test2@test2.com"}]

I think the Array of Hash inside of the hash is throwing me off. But I've played around with inject , update , merge , collect , map and have had no luck generating this type of dynamic hash that needs to be created based on how many entries in the @emails Array.

Does anyone have any suggestions on how to pull this off?

Answer 1

So basically your question is like this:

having this array:

emails = ["test@test.com", "test2@test2.com", ....]

You want an array of hashes like this:

output = [{:key => "OWNER_EMAILS", :value => "test@test.com"},{:key => "OWNER_EMAILS", :value => "test2@test2.com"}, ...]

One solution would be:

emails.inject([]){|result,email| result << {:key => "OWNER_EMAILS", :value => email} }

Update: of course we can do it this way:

emails.map {|email| {:key => "OWNER_EMAILS", :value => email} }