Conditional Execution of Javascript in a Rails View

Question

I have some javascript I would like to execute only if a user is logged into my rails app. I set up the user show page as follows:

<table class="profile" summary="Profile information">
  <tr>
    <td class="main">
      <h1>
        <%= gravatar_for @user %>
        <%= @user.name %>
      </h1>
      <%= render 'follow_form' if signed_in? %>
      <% end %>
    </td>
    <td class="sidebar round">
      <strong>Name</strong> <%= @user.name %><br />
      <strong>URL</strong> <%= link_to user_path(@user), @user %><br />
    </td>
  </tr>
</table>


<% if signed_in? %>

<div id="app-body">
<script type="text/javascript">
document.write("Hello World")
</script>
</div>

 <% end %>

where signed_in? is a convenience method that returns a boolean if a user is logged in or not. The issue is when I try to load this page I get an error at one line past the end of the file:

syntax error, unexpected keyword_ensure, expecting $end

Extracted source (around line #48):

45: </div>
46: 
47:  <% end %>

Does anyone know how I can fix this error? All I find when I search are HAML indentation issues, but here I am using erb, so indentation shouldn't matter.

as per your code, nothing is wrong. Can you check in your erb file if any block is not ended properly. — Naren Sisodiya
– Naren Sisodiya, Commented Feb 28, 2012 at 4:51
I updated my code to show the entire page, I believe all the blocks are closed. — Andrew Lauer Barinov
– Andrew Lauer Barinov, Commented Feb 28, 2012 at 5:01

Naren Sisodiya · Accepted Answer · 2012-02-28 05:02:51Z

1

there is an extra end in your code after <%= render 'follow_form' if signed_in? %> remove it.

In ruby no need to have end statement for condition at end of line so <% end %> is not needed for <%= render 'follow_form' if signed_in? %>

answered Feb 28, 2012 at 5:02

Naren Sisodiya

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