From: Josh Cheek <josh.cheek@...>
Date: 2013-07-22T03:31:05+09:00
Subject: Re: ActiveSupport undercore behaviour

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On Sun, Jul 21, 2013 at 7:03 AM, Serguei Cambour <lists@ruby-forum.com>wrote:

> I changed as follows and it works for the first nest level for the
> moment:
>
> def format_hash_key(hash)
>   Hash[hash.map {|k, v| [ActiveSupport::Inflector.underscore(k.to_s), v]
> }]
> end
>
> arr = []
> TECHS.each_value do |array_values|
>   array_values.each do |hash|
>     arr << format_hash_key(hash)
>   end
> end
> puts arr
>
> Output:
>
>
> {"assigned_name"=>"P1", "export_price"=>"USD", "id"=>"1",
> "delivery"=>"Y", "registered_members"=>[{"Name"=>"Admin", "Id"=>"3",
> "AvailablePosts"=>[{"Seat"=>"2", "Colour"=>18}, {"Seat"=>"3",
> "Colour"=>19}, {"Seat"=>"4", "Colour"=>181}, {"Seat"=>"5",
> "Colour"=>183}]}]}
>
> Is there any elegant way to call the same method for other nested levels
> (values) ?
>
> Thank you.
>
> --
> Posted via http://www.ruby-forum.com/.
>
>
I'd probably do it like this. (I like using the word "json" in the name b/c
it makes it informs the caller of what the data structure can contain)

require 'active_support/inflector'

TECHS = {"platform"=>
  [{"AssignedName"=>"P1", "ExportPrice"=>"USD", "Id"=>"1",
    "Delivery"=>"Y",
    "RegisteredMembers"=>[
      {"Name"=>"Admin", "Id"=>"3",
        "AvailablePosts"=>[
          {"Seat"=>"2", "Colour"=>18, },
          {"Seat"=>"3", "Colour"=>19, },
          {"Seat"=>"4", "Colour"=>181, },
          {"Seat"=>"5", "Colour"=>183, }
        ]
      }
    ]
  }]
}

def normalize_json(deserialized_json)
  case deserialized_json
  when Array
    deserialized_json.map { |v| normalize_json v }
  when Hash
    deserialized_json.each_with_object Hash.new do |(k, v), new_hash|
      new_hash[ActiveSupport::Inflector.underscore(k)] = normalize_json(v)
    end
  else
    deserialized_json
  end
end

require 'pp'
pp normalize_json TECHS

# >> {"platform"=>
# >>   [{"assigned_name"=>"P1",
# >>     "export_price"=>"USD",
# >>     "id"=>"1",
# >>     "delivery"=>"Y",
# >>     "registered_members"=>
# >>      [{"name"=>"Admin",
# >>        "id"=>"3",
# >>        "available_posts"=>
# >>         [{"seat"=>"2", "colour"=>18},
# >>          {"seat"=>"3", "colour"=>19},
# >>          {"seat"=>"4", "colour"=>181},
# >>          {"seat"=>"5", "colour"=>183}]}]}]}

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On Sun, Jul 21, 2013 at 7:03 AM, Serguei Cambour <span dir=3D"ltr">&lt;<a h=
ref=3D"mailto:lists@ruby-forum.com" target=3D"_blank">lists@ruby-forum.com<=
/a>&gt;</span> wrote:<br><div class=3D"gmail_quote"><blockquote class=3D"gm=
ail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-le=
ft:1ex">
I changed as follows and it works for the first nest level for the<br>
moment:<br>
<br>
def format_hash_key(hash)<br>
=A0 Hash[hash.map {|k, v| [ActiveSupport::Inflector.underscore(k.to_s), v]<=
br>
}]<br>
end<br>
<br>
arr =3D []<br>
TECHS.each_value do |array_values|<br>
=A0 array_values.each do |hash|<br>
=A0 =A0 arr &lt;&lt; format_hash_key(hash)<br>
=A0 end<br>
end<br>
puts arr<br>
<br>
Output:<br>
<br>
<br>
{&quot;assigned_name&quot;=3D&gt;&quot;P1&quot;, &quot;export_price&quot;=
=3D&gt;&quot;USD&quot;, &quot;id&quot;=3D&gt;&quot;1&quot;,<br>
&quot;delivery&quot;=3D&gt;&quot;Y&quot;, &quot;registered_members&quot;=3D=
&gt;[{&quot;Name&quot;=3D&gt;&quot;Admin&quot;, &quot;Id&quot;=3D&gt;&quot;=
3&quot;,<br>
&quot;AvailablePosts&quot;=3D&gt;[{&quot;Seat&quot;=3D&gt;&quot;2&quot;, &q=
uot;Colour&quot;=3D&gt;18}, {&quot;Seat&quot;=3D&gt;&quot;3&quot;,<br>
&quot;Colour&quot;=3D&gt;19}, {&quot;Seat&quot;=3D&gt;&quot;4&quot;, &quot;=
Colour&quot;=3D&gt;181}, {&quot;Seat&quot;=3D&gt;&quot;5&quot;,<br>
&quot;Colour&quot;=3D&gt;183}]}]}<br>
<br>
Is there any elegant way to call the same method for other nested levels<br=
>
(values) ?<br>
<div class=3D"HOEnZb"><div class=3D"h5"><br>
Thank you.<br>
<br>
--<br>
Posted via <a href=3D"http://www.ruby-forum.com/" target=3D"_blank">http://=
www.ruby-forum.com/</a>.<br>
<br>
</div></div></blockquote></div><div><br></div><div>I&#39;d probably do it l=
ike this. (I like using the word &quot;json&quot; in the name b/c it makes =
it informs the caller of what the data structure can contain)</div><br>
<div><div>require &#39;active_support/inflector&#39;</div><div><br></div><d=
iv>TECHS =3D {&quot;platform&quot;=3D&gt;</div><div>=A0 [{&quot;AssignedNam=
e&quot;=3D&gt;&quot;P1&quot;, &quot;ExportPrice&quot;=3D&gt;&quot;USD&quot;=
, &quot;Id&quot;=3D&gt;&quot;1&quot;,</div>
<div>=A0 =A0 &quot;Delivery&quot;=3D&gt;&quot;Y&quot;,</div><div>=A0 =A0 &q=
uot;RegisteredMembers&quot;=3D&gt;[</div><div>=A0 =A0 =A0 {&quot;Name&quot;=
=3D&gt;&quot;Admin&quot;, &quot;Id&quot;=3D&gt;&quot;3&quot;,</div><div>=A0=
 =A0 =A0 =A0 &quot;AvailablePosts&quot;=3D&gt;[</div>
<div>=A0 =A0 =A0 =A0 =A0 {&quot;Seat&quot;=3D&gt;&quot;2&quot;, &quot;Colou=
r&quot;=3D&gt;18, },</div><div>=A0 =A0 =A0 =A0 =A0 {&quot;Seat&quot;=3D&gt;=
&quot;3&quot;, &quot;Colour&quot;=3D&gt;19, },</div><div>=A0 =A0 =A0 =A0 =
=A0 {&quot;Seat&quot;=3D&gt;&quot;4&quot;, &quot;Colour&quot;=3D&gt;181, },=
</div>
<div>=A0 =A0 =A0 =A0 =A0 {&quot;Seat&quot;=3D&gt;&quot;5&quot;, &quot;Colou=
r&quot;=3D&gt;183, }</div><div>=A0 =A0 =A0 =A0 ]</div><div>=A0 =A0 =A0 }</d=
iv><div>=A0 =A0 ]</div><div>=A0 }]</div><div>}</div><div><br></div><div>def=
 normalize_json(deserialized_json)</div>
<div>=A0 case deserialized_json</div><div>=A0 when Array</div><div>=A0 =A0 =
deserialized_json.map { |v| normalize_json v }</div><div>=A0 when Hash</div=
><div>=A0 =A0 deserialized_json.each_with_object Hash.new do |(k, v), new_h=
ash|</div>
<div>=A0 =A0 =A0 new_hash[ActiveSupport::Inflector.underscore(k)] =3D norma=
lize_json(v)</div><div>=A0 =A0 end</div><div>=A0 else</div><div>=A0 =A0 des=
erialized_json</div><div>=A0 end</div><div>end</div><div><br></div><div>req=
uire &#39;pp&#39;</div>
<div>pp normalize_json TECHS</div><div><br></div><div># &gt;&gt; {&quot;pla=
tform&quot;=3D&gt;</div><div># &gt;&gt; =A0 [{&quot;assigned_name&quot;=3D&=
gt;&quot;P1&quot;,</div><div># &gt;&gt; =A0 =A0 &quot;export_price&quot;=3D=
&gt;&quot;USD&quot;,</div>
<div># &gt;&gt; =A0 =A0 &quot;id&quot;=3D&gt;&quot;1&quot;,</div><div># &gt=
;&gt; =A0 =A0 &quot;delivery&quot;=3D&gt;&quot;Y&quot;,</div><div># &gt;&gt=
; =A0 =A0 &quot;registered_members&quot;=3D&gt;</div><div># &gt;&gt; =A0 =
=A0 =A0[{&quot;name&quot;=3D&gt;&quot;Admin&quot;,</div>
<div># &gt;&gt; =A0 =A0 =A0 =A0&quot;id&quot;=3D&gt;&quot;3&quot;,</div><di=
v># &gt;&gt; =A0 =A0 =A0 =A0&quot;available_posts&quot;=3D&gt;</div><div># =
&gt;&gt; =A0 =A0 =A0 =A0 [{&quot;seat&quot;=3D&gt;&quot;2&quot;, &quot;colo=
ur&quot;=3D&gt;18},</div><div>
# &gt;&gt; =A0 =A0 =A0 =A0 =A0{&quot;seat&quot;=3D&gt;&quot;3&quot;, &quot;=
colour&quot;=3D&gt;19},</div><div># &gt;&gt; =A0 =A0 =A0 =A0 =A0{&quot;seat=
&quot;=3D&gt;&quot;4&quot;, &quot;colour&quot;=3D&gt;181},</div><div># &gt;=
&gt; =A0 =A0 =A0 =A0 =A0{&quot;seat&quot;=3D&gt;&quot;5&quot;, &quot;colour=
&quot;=3D&gt;183}]}]}]}</div>
</div><div><br></div>

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