Creating a partial that can take a collection

Question

I'm having a problem with a partial that displays takes in a collection of @users, and then creates a report like:

_users.html.erb:

<table>
<tr>
...
</tr>
<% @items.each do |u| %>
..
<% end %>
</table>

So now in my home#index erb page, I want to display 2 reports like:

But I am getting an error saying that items doesn't exist.

undefined method `each' for nil:NilClass

How do I tell the partial that @good_users or @bad_users is to be assigned to @items?

score 1 · Accepted Answer · answered Nov 17 '13 at 20:59

Use a local variable, like 'users'

<table>
<tr>
...
</tr>
<% users.each do |u| %>
..
<% end %>
</table>

And when you're rendering the partial, set the local variable:

render partial: 'users', locals: { users: @good_users }

or

render partial: 'users', locals: { users: @bad_users }

as appropriate.

1 Answers1