How to represent an Array in YAML Test fixtures

rubyonrails-talk
1

All,

I have an Active Record column which I serialize into a Array of Hashes, like below:

Model:   serialize :sizes

which, when accessed produces and structure like:   [{:quantity=>"1", :size=>1}, {:quantity=>"2", :size=>2}, {:quantity=>"2", :size=>3}]

this gets converted into YAML when stored in the DB.

I am having problems representing this in my YAML test fixtures.

I have tried the following:

  sizes: '--- \n- :quantity: "1"\n :size: 1\n- :quantity: "2"\n :size: 2\n- :quantity: "2"\n :size: 3\n'

and

  sizes: <%= [{:quantity=>"1", :size=>1}, {:quantity=>"2", :size=>2}, {:quantity=>"2", :size=>3}].to_yaml %>

to no avail.

Does anybody how one might represent such an array in YAML?

2

quantity:    - 1    - 2    - 3

-- Marcus Brito

3

To those who come along, I found the following solution:

  sizes: [{!ruby/sym quantity: '5', !ruby/sym size: 1}, {!ruby/sym quantity: '8', !ruby/sym size: 2}, {!ruby/sym quantity: '8', !ruby/sym size: 3}]

see: http://yaml4r.sourceforge.net/cookbook/#simple_inline_array http://yaml4r.sourceforge.net/cookbook/#symbols

4

More generally, you can find out the yaml format for any data structure from the console:

  planb:/~ $ ./script/console   Loading development environment.   >> b = %w(eeny meeny miney mo)   => ["eeny", "meeny", "miney", "mo"]   >> require 'yaml'   => false

5

Awesome! Spent way too much time reading the YAML specification to try to make this work for me. Thanks for posting your solution and links.

Jamie