Get values from twodimensional array - ruby-on-rails-3

Question

I'm passing an array with form params to process. It contains several rows with each multiple values. How can I retrieve the individual values?
This is the controller code:
params[:line].each do |line|
...
end
Each "line" gives me these values and I want to retrieve each value, like "home_score_id":
["1", {":home_club_id"=>"11", ":home_score"=>"2", ":away_score"=>"4", ":away_club_id"=>"10"}]
Update:
This is the form, it has 12 lines where you enter match results:
= form_tag store_all_results_path, class: 'form-horizontal' do
.control-group
.controls
= select_tag :gameround_id, options_for_select(#gamerounds.map{ |g| ["#{markup_gameround(g)}", g.id] })
- 1.upto(12) do |counter|
.control-group
.controls
= select_tag "line[#{counter}][:home_club_id]", options_for_select(#clubs.map{ |c| [c.club_name, c.id] }), include_blank: true
= text_field_tag "line[#{counter}][:home_score]", nil, class: "small_text_field"
= text_field_tag "line[#{counter}][:away_score]", nil, class: "small_text_field"
= select_tag "line[#{counter}][:away_club_id]", options_for_select(#clubs.map{ |c| [c.club_name, c.id] }), include_blank: true
.form-actions
= submit_tag :submit, value: I18n.t('.general.save'), class: "btn"
= link_to t('.cancel', default: t("helpers.links.cancel")), results_path, class: 'btn'
When submitted, it gives these POST parameters:
Started POST "/results/store_all" for 127.0.0.1 at 2013-04-03 10:47:34 +0200
Processing by ResultsController#store_all as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"[FILTERED]", "gameround_id"=>"3", "line"=>{"1"=>{":home_club_id"=>"8", ":home_score"=>"3", ":away_score"=>"2", ":away_club_id"=>"10"}, "2"=>{":home_club_id"=>"7", ":home_score"=>"4", ":away_score"=>"2", ":away_club_id"=>"12"}, "3"=>{":home_club_id"=>"", ":home_score"=>"", ":away_score"=>"", ":away_club_id"=>""}, "4"=>{":home_club_id"=>"", ":home_score"=>"", ":away_score"=>"", ":away_club_id"=>""}, "5"=>{":home_club_id"=>"", ":home_score"=>"", ":away_score"=>"", ":away_club_id"=>""}, "6"=>{":home_club_id"=>"", ":home_score"=>"", ":away_score"=>"", ":away_club_id"=>""}, "7"=>{":home_club_id"=>"", ":home_score"=>"", ":away_score"=>"", ":away_club_id"=>""}, "8"=>{":home_club_id"=>"", ":home_score"=>"", ":away_score"=>"", ":away_club_id"=>""}, "9"=>{":home_club_id"=>"", ":home_score"=>"", ":away_score"=>"", ":away_club_id"=>""}, "10"=>{":home_club_id"=>"", ":home_score"=>"", ":away_score"=>"", ":away_club_id"=>""}, "11"=>{":home_club_id"=>"", ":home_score"=>"", ":away_score"=>"", ":away_club_id"=>""}, "12"=>{":home_club_id"=>"", ":home_score"=>"", ":away_score"=>"", ":away_club_id"=>""}}, "commit"=>"Opslaan"}
In the controller, I want to go through each of the 12 lines and create a result record (when line is not empty):
def store_all
params[:line].each do |line|
unless line[:home_club_id].blank?
Result.create(home_club_id: line[:home_club_id], away_club_id: line[:away_club_id], home_score: line[:home_score], away_score: line[:away_score], gameround_id: params[:gameround_id])
end
end
end

Answer 1

Although your keys look like symbols (:home_club_id), they are in fact strings prefixed with a colon (":home_club_id"). Removing the colons from your view should fix the problem.
So instead of:
= text_field_tag "line[#{counter}][:away_score]"
Just write:
= text_field_tag "line[#{counter}][away_score]"
Since params is a HashWithIndifferentAccess you can use either line["away_score"] or line[:away_score] in your controller.
def store_all
params[:line].each do |counter, line|
unless line[:home_club_id].blank?
Result.create(line.merge(gameround_id: params[:gameround_id])
end
end
end

Answer 2

The second value in "line" is a Hash, thus access is possible with
line[1][:home_club_id]