w/merb:

(rdb:1) blah = {}
{}
(rdb:1) images = [{:src => '1', :href => '1' }, {:src => '2', :href => '2' }]
[{:href=>"1", :src=>"1"}, {:href=>"2", :src=>"2"}]
(rdb:1) blah[:images] = images
[{:href=>"1", :src=>"1"}, {:href=>"2", :src=>"2"}]
(rdb:1) blah.to_json
TypeError Exception: wrong argument type Hash (expected Data)


w/irb:
ruby: main
>> blah = {}
# => {}

ruby: main
>> images = [{:src => '1', :href => '1' }, { :src => '2', :href => '2' }]
# => [{:href=>"1", :src=>"1"}, {:href=>"2", :src=>"2"}]

ruby: main
>> blah[:images] = images
# => [{:href=>"1", :src=>"1"}, {:href=>"2", :src=>"2"}]

ruby: main
>> blah.to_json
# => "{\"images\":[{\"href\":\"1\",\"src\":\"1\"},{\"href\":\"2\",\"src\":\"2\"}]}"