I am rendering a variable in rails view.
<%= @data.matrix %>
which prints multidimensional array in template like this:
[[":23", ":12"],[ ":56", ":12"],[":21", ":23"]]
How can I represent the above data in table format that it will actually look like a matrix in view.html page for better reading the values row and colum. We also have the information of @data.row and @data.col in view template.
This is more HTML question but is there any way to do it with rails view syntax?
You could do something like:
<table>
<% JSON.parse(@data.matrix).each do |tuple| %>
<tr>
<% tupel.each do |value| %>
<td><%= value %></td>
<% end %>
</tr>
<% end %>
</table>
undefined method each' for #<String:0x007fef3fb40998>` That means string is not null
@data.matrix returns a string and not an array. Looks like JSON, therefore let's parse it as JSON first. Please see my updated answer.
Commented
Jul 1, 2015 at 2:02
arr[i][0] ..arr[i][col] value. Please have a look at the screenshot.i.imgur.com/pSFWuI0.png JSON representation of printing matrix section
You could do something like for multiple array,
<table>
<% @data.matrix.flatten.each do |value| %>
<tr>
<td><%= value %></td>
</tr>
<% end %>
</table>
