diff options
Diffstat (limited to 'railties/doc/guides/html/debugging_rails_applications.html')
| -rw-r--r-- | railties/doc/guides/html/debugging_rails_applications.html | 30 |
1 files changed, 15 insertions, 15 deletions
diff --git a/railties/doc/guides/html/debugging_rails_applications.html b/railties/doc/guides/html/debugging_rails_applications.html index 51db11eb4e..07557b9e99 100644 --- a/railties/doc/guides/html/debugging_rails_applications.html +++ b/railties/doc/guides/html/debugging_rails_applications.html @@ -160,7 +160,7 @@ Analyze the stack trace <h3 id="_debug">1.1. debug</h3>
<div class="paragraph"><p>The <tt>debug</tt> helper will return a <pre>-tag that renders the object using the YAML format. This will generate human-readable data from any object. For example, if you have this code in a view:</p></div>
<div class="listingblock">
-<div class="content"><!-- Generator: GNU source-highlight 2.11.1
+<div class="content"><!-- Generator: GNU source-highlight 2.9
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
@@ -188,7 +188,7 @@ Title: Rails debugging guide</tt></pre> <h3 id="_to_yaml">1.2. to_yaml</h3>
<div class="paragraph"><p>Displaying an instance variable, or any other object or method, in yaml format can be achieved this way:</p></div>
<div class="listingblock">
-<div class="content"><!-- Generator: GNU source-highlight 2.11.1
+<div class="content"><!-- Generator: GNU source-highlight 2.9
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
@@ -216,7 +216,7 @@ Title: Rails debugging guide</tt></pre> <h3 id="_inspect">1.3. inspect</h3>
<div class="paragraph"><p>Another useful method for displaying object values is <tt>inspect</tt>, especially when working with arrays or hashes. This will print the object value as a string. For example:</p></div>
<div class="listingblock">
-<div class="content"><!-- Generator: GNU source-highlight 2.11.1
+<div class="content"><!-- Generator: GNU source-highlight 2.9
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
@@ -236,14 +236,14 @@ Title: Rails debugging guide</tt></pre> <div class="paragraph"><p>Rails has built-in support to debug RJS, to active it, set <tt>ActionView::Base.debug_rjs</tt> to <em>true</em>, this will specify whether RJS responses should be wrapped in a try/catch block that alert()s the caught exception (and then re-raises it).</p></div>
<div class="paragraph"><p>To enable it, add the following in the <tt>Rails::Initializer do |config|</tt> block inside <tt>environment.rb</tt>:</p></div>
<div class="listingblock">
-<div class="content"><!-- Generator: GNU source-highlight 2.11.1
+<div class="content"><!-- Generator: GNU source-highlight 2.9
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt>config<span style="color: #990000">.</span>action_view<span style="color: #990000">[:</span>debug_rjs<span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #0000FF">true</span></span></tt></pre></div></div>
<div class="paragraph"><p>Or, at any time, setting <tt>ActionView::Base.debug_rjs</tt> to <em>true</em>:</p></div>
<div class="listingblock">
-<div class="content"><!-- Generator: GNU source-highlight 2.11.1
+<div class="content"><!-- Generator: GNU source-highlight 2.9
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
@@ -264,7 +264,7 @@ http://www.gnu.org/software/src-highlite --> <div class="paragraph"><p>Rails makes use of Ruby’s standard <tt>logger</tt> to write log information. You can also substitute another logger such as <tt>Log4R</tt> if you wish.</p></div>
<div class="paragraph"><p>You can specify an alternative logger in your <tt>environment.rb</tt> or any environment file:</p></div>
<div class="listingblock">
-<div class="content"><!-- Generator: GNU source-highlight 2.11.1
+<div class="content"><!-- Generator: GNU source-highlight 2.9
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
@@ -272,7 +272,7 @@ http://www.gnu.org/software/src-highlite --> ActiveRecord<span style="color: #990000">::</span>Base<span style="color: #990000">.</span>logger <span style="color: #990000">=</span> Log4r<span style="color: #990000">::</span>Logger<span style="color: #990000">.</span>new<span style="color: #990000">(</span><span style="color: #FF0000">"Application Log"</span><span style="color: #990000">)</span></tt></pre></div></div>
<div class="paragraph"><p>Or in the <tt>Initializer</tt> section, add <em>any</em> of the following</p></div>
<div class="listingblock">
-<div class="content"><!-- Generator: GNU source-highlight 2.11.1
+<div class="content"><!-- Generator: GNU source-highlight 2.9
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
@@ -290,7 +290,7 @@ config<span style="color: #990000">.</span>logger <span style="color: #990000">= <div class="paragraph"><p>When something is logged it’s printed into the corresponding log if the log level of the message is equal or higher than the configured log level. If you want to know the current log level you can call the <tt>ActiveRecord::Base.logger.level</tt> method.</p></div>
<div class="paragraph"><p>The available log levels are: <tt>:debug</tt>, <tt>:info</tt>, <tt>:warn</tt>, <tt>:error</tt>, and <tt>:fatal</tt>, corresponding to the log level numbers from 0 up to 4 respectively. To change the default log level, use</p></div>
<div class="listingblock">
-<div class="content"><!-- Generator: GNU source-highlight 2.11.1
+<div class="content"><!-- Generator: GNU source-highlight 2.9
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
@@ -308,7 +308,7 @@ ActiveRecord<span style="color: #990000">::</span>Base<span style="color: #99000 <h3 id="_sending_messages">2.3. Sending Messages</h3>
<div class="paragraph"><p>To write in the current log use the <tt>logger.(debug|info|warn|error|fatal)</tt> method from within a controller, model or mailer:</p></div>
<div class="listingblock">
-<div class="content"><!-- Generator: GNU source-highlight 2.11.1
+<div class="content"><!-- Generator: GNU source-highlight 2.9
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
@@ -317,7 +317,7 @@ logger<span style="color: #990000">.</span>info <span style="color: #FF0000">"Pr logger<span style="color: #990000">.</span>fatal <span style="color: #FF0000">"Terminating application, raised unrecoverable error!!!"</span></tt></pre></div></div>
<div class="paragraph"><p>Here’s an example of a method instrumented with extra logging:</p></div>
<div class="listingblock">
-<div class="content"><!-- Generator: GNU source-highlight 2.11.1
+<div class="content"><!-- Generator: GNU source-highlight 2.9
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
@@ -368,7 +368,7 @@ Completed in 0.01224 (81 reqs/sec) | DB: 0.00044 (3%) | 302 Found [http://localh <h3 id="_setup">3.1. Setup</h3>
<div class="paragraph"><p>The debugger used by Rails, <tt>ruby-debug</tt>, comes as a gem. To install it, just run:</p></div>
<div class="listingblock">
-<div class="content"><!-- Generator: GNU source-highlight 2.11.1
+<div class="content"><!-- Generator: GNU source-highlight 2.9
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
@@ -377,7 +377,7 @@ http://www.gnu.org/software/src-highlite --> <div class="paragraph"><p>Rails has had built-in support for ruby-debug since Rails 2.0. Inside any Rails application you can invoke the debugger by calling the <tt>debugger</tt> method.</p></div>
<div class="paragraph"><p>Here’s an example:</p></div>
<div class="listingblock">
-<div class="content"><!-- Generator: GNU source-highlight 2.11.1
+<div class="content"><!-- Generator: GNU source-highlight 2.9
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
@@ -394,7 +394,7 @@ http://www.gnu.org/software/src-highlite --> </div></div>
<div class="paragraph"><p>Make sure you have started your web server with the option <tt>--debugger</tt>:</p></div>
<div class="listingblock">
-<div class="content"><!-- Generator: GNU source-highlight 2.11.1
+<div class="content"><!-- Generator: GNU source-highlight 2.9
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
@@ -620,7 +620,7 @@ true</tt></pre> <div class="paragraph"><p>The difference between <tt>next</tt> and <tt>step</tt> is that <tt>step</tt> stops at the next line of code executed, doing just a single step, while <tt>next</tt> moves to the next line without descending inside methods.</p></div>
<div class="paragraph"><p>For example, consider this block of code with an included <tt>debugger</tt> statement:</p></div>
<div class="listingblock">
-<div class="content"><!-- Generator: GNU source-highlight 2.11.1
+<div class="content"><!-- Generator: GNU source-highlight 2.9
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
@@ -833,7 +833,7 @@ set listsize 25</tt></pre> </div></div>
<div class="paragraph"><p>Then setup you application for profiling. Then add the following at the bottom of config/environment.rb:</p></div>
<div class="listingblock">
-<div class="content"><!-- Generator: GNU source-highlight 2.11.1
+<div class="content"><!-- Generator: GNU source-highlight 2.9
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
|