Rails params should read an array

Question

My question is quite simple, I have a plain HTML form (no helpers, no models) and I want to send the parameters so params dictionary appears to be an array.

This is my code:

<div class="headers_line">
  <div class="header_field">
    <input type="text" placeholder="Header name" name="header[0][name]" class=
    "parameter_input" />
  </div>

  <div class="header_field">
    <input type="text" placeholder="Value" name="header[0][value]" class=
    "parameter_input" />
  </div>
</div>

<div class="headers_line">
  <div class="header_field">
    <input type="text" placeholder="Header name" name="header[1][name]" class=
    "parameter_input" />
  </div>

  <div class="header_field">
    <input type="text" placeholder="Value" name="header[1][value]" class=
    "parameter_input" />
  </div>
</div>

<div class="headers_line">
  <div class="header_field">
    <input type="text" placeholder="Header name" name="header[2][name]" class=
    "parameter_input" />
  </div>

  <div class="header_field">
    <input type="text" placeholder="Value" name="header[2][value]" class=
    "parameter_input" />
  </div>
</div>

And this is what my params looks like:

"header"=>{"0"=>{"name"=>"jnjnnj", "value"=>"nnjjn"}, "1"=>{"name"=>"jnnjjn", "value"=>"jnjnnj"}, "2"=>{"name"=>"jnjnjnjn", "value"=>"jnnj"}, "3"=>{"name"=>"", "value"=>""}}

Trying to use header[][name] and header[][value] didn´t work either.

Thanks

Almost, it generates an array of names and another of values, but it's better: "header"=>{"name"=>["ijijjijijij", "ijadsijdasij", "adsadjsiiadjsjidsa", "jidadisjajdisai", ""], "value"=>["ijsijdsaijadsij", "ijdasjidasijij", "jadisidjsajidsaji", "sajidsji", ""]} — Tony
– Tony, Commented Nov 13, 2013 at 21:41
are you trying to flatten the hash to get rid of the "0","1" keys etc? is that what you want to achieve? — Peter Andersson
– Peter Andersson, Commented Nov 13, 2013 at 21:41
I want to achieve: params[:header] to be an array of {name: '2323', value: '123'} — Tony
– Tony, Commented Nov 13, 2013 at 21:49

jaeheung · Accepted Answer · 2013-11-13 22:19:31Z

1

Sorry, I was totally confused in the previous answer.

params[:header].values.map(&:symbolize_keys) will give you the array you want.

You cannot get it directly.

answered Nov 13, 2013 at 22:19

jaeheung

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Comments

Wladimir Palant · Accepted Answer · 2014-02-27 08:30:10Z

1

Ok, based on @house9 comment I did the following:

I used header[name][] and header[value][]

Then I created an array of hashes by doing:

headers = params[:header][:name].zip(params[:header][:value])

edited Feb 27, 2014 at 8:30

Wladimir Palant

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answered Nov 14, 2013 at 14:31

Tony

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