Ruby How do I get a 2d array from HTML form? - ruby-on-rails

Question

I am trying to write a tickets booking system.
I have a 2d array stored the seat and the status
#movie1 = [["A1", 0], ["A2", 0], ["A3", 1],["A4", 1], ["A5", 1], ["A6", 1], ["A7", 1], ["A8", 1], ["A9", 0], ["A10", 1]]
And this is the view
<form action= "seat/test4" method="get">
<table>
<% for i in 0..9 do %>
<% if i == 0 then %>
<tr>
<% end %>
<% if #movie1[i][1] == 1 then %>
<td bgcolor="red">
<%= #movie1[i][0] %>
<input type = button value = "X"
</td>
<% else %>
<td bgcolor="green">
<%= #movie1[i][0] %>
<input type="checkbox" id= <%= #movie1[i][0] %> name = <%= #movie1[i][0] %> >
</td>
<% end %>
<% if i == 9 then %>
</tr>
<% end %>
<% end %>
</table>
<input type="submit" value="Purchase">
</form>
How can I get the checkbox value and change the #movie1[i][1] = 1 ?

Answer 1

If you are trying to change #movie1. #movie1 is a ruby variable it renders when page loads and it cannot be changed after that. if you really want to change the variable without page reload you can do it via Ajax call Rails itself has feature to accomplish that.
To know more refer this link:
Working with javascript in Rails
Also Refer about rails partial
Rails Partial
This is used to create subtemplates, is usefull for dynamic cases like this.
As a Suggestion you can also implement the view as follows
<form action= "seat/test4" method="get">
<table>
<tr>
<% #movie1.each do |m| %>
<% if m[1] == 1 %>
<td bgcolor="red">
<%= m[0] %>
<input type = button value = "X" />
</td>
<% else %>
<td bgcolor="green">
<%= m[0] %>
<input type="checkbox" id= <%= m[0] %> value="<%= m[0] %>" name = <%= m[0] %> />
</td>
<% end %>
<% end %>
</tr>
</table>
<input type="submit" value="Purchase">
</form>
Also add value attribute to checkbox tag