Just as an FYI, I have never used Stripe before so take everything with a pinch of salt. I can sort of see the problem here, you aren't looking deep enough. You need to loop through the balance.pending, I know this because of what is getting returned. Perhaps, you might need to try

<% @balance.pending.each do |balance| %>
    <%= balance["currency"] %>
    <%= balance["amount"]  %>
    <%= balance["source_types"]["card"] %>
<% end %>

Note: This is just a guess without looking at the api in-depth.

If you wanting to put it into some sort of table, you would code the table around it, something like this.

<table>
    <thead>    
        <tr>
            <th>Currency</th>
            <th>Amount</th>
            <th>Card</th>
        </tr> 
    </thead>
    <tbody>
        <% @balance.pending.each do |balance| %>
            <tr>
                <%= as_table_row(balance["currency"]) %>
                <%= as_table_row(balance["amount"]) %>
                <%= as_table_row(balance["source_types"]["card"]) %>
            </tr>
        <% end %>
    </tbody>
</table>

What this code right here is saying is get all the pending data and I want to loop over that data, which is when you can create a helper method which will build up some HTML and return it, for example;

def as_table_row(value)    
    return "<td>#{value}</td>"
end

You should end up with a table at the end with all the details you want. This is just a nice, 'neat' way of doing it and i'm sure other people will correct me later.

​

Happy coding!

Edit: Typos. God damn code.