From 08689a2d1f0165f353f62ef4626e87fe841ec735 Mon Sep 17 00:00:00 2001
From: Tijmen Brommet <tijmen@gmail.com>
Date: Tue, 3 Nov 2015 21:26:59 +0000
Subject: Add text template for source code
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When a request is made with AJAX and an error occurs, Rails will render
a text-template for the exception instead of the HTML error page
(#11960).

The `.text.erb` variant of the `_source` template is currently missing,
causing HTML to be rendered in the response. This commit adds the text
template.

To keep the page scannable we only only show the first three source
extracts.

Related to #14745.

Before:

```
~/testing-exceptions  ᐅ curl 'http://localhost:3000/' -H
'X-Requested-With: XMLHttpRequest'
RuntimeError in PostsController#index

    <div class="source " id="frame-source-0">
      <div class="info">
        Extracted source (around line <strong>#3</strong>):
      </div>
      <div class="data">
        <table cellpadding="0" cellspacing="0" class="lines">
          <tr>
```

After:

```
~/testing-exceptions  ᐅ curl 'http://localhost:3000/' -H
'X-Requested-With: XMLHttpRequest'
RuntimeError in PostsController#index

Extracted source (around line #3):

*3     raise
```
---
 .../middleware/templates/rescues/_source.html.erb  | 27 ++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 actionpack/lib/action_dispatch/middleware/templates/rescues/_source.html.erb

(limited to 'actionpack/lib/action_dispatch/middleware/templates/rescues/_source.html.erb')

diff --git a/actionpack/lib/action_dispatch/middleware/templates/rescues/_source.html.erb b/actionpack/lib/action_dispatch/middleware/templates/rescues/_source.html.erb
new file mode 100644
index 0000000000..e7b913bbe4
--- /dev/null
+++ b/actionpack/lib/action_dispatch/middleware/templates/rescues/_source.html.erb
@@ -0,0 +1,27 @@
+<% @source_extracts.each_with_index do |source_extract, index| %>
+  <% if source_extract[:code] %>
+    <div class="source <%="hidden" if @show_source_idx != index%>" id="frame-source-<%=index%>">
+      <div class="info">
+        Extracted source (around line <strong>#<%= source_extract[:line_number] %></strong>):
+      </div>
+      <div class="data">
+        <table cellpadding="0" cellspacing="0" class="lines">
+          <tr>
+            <td>
+              <pre class="line_numbers">
+                <% source_extract[:code].each_key do |line_number| %>
+<span><%= line_number -%></span>
+                <% end %>
+              </pre>
+            </td>
+<td width="100%">
+<pre>
+<% source_extract[:code].each do |line, source| -%><div class="line<%= " active" if line == source_extract[:line_number] -%>"><%= source -%></div><% end -%>
+</pre>
+</td>
+          </tr>
+        </table>
+      </div>
+    </div>
+  <% end %>
+<% end %>
-- 
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