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<?xml version="1.0" encoding="utf-8"?>
<feed xmlns="http://www.w3.org/2005/Atom"><title>Alexis' log</title><link href="http://blog.notmyidea.org" rel="alternate"></link><link href="http://blog.notmyidea.org/feeds/all-en.atom.xml" rel="self"></link><id>http://blog.notmyidea.org</id><updated>2011-12-06T00:00:00+01:00</updated><entry><title>Introducing cornice</title><link href="http://blog.notmyidea.org/introducing-cornice.html" rel="alternate"></link><updated>2011-12-06T00:00:00+01:00</updated><author><name>Alexis Métaireau</name></author><id>tag:blog.notmyidea.org,2011-12-06:/introducing-cornice.html/</id><summary type="html">&lt;p&gt;Wow, this is my second working day at mozilla. I've been working, yesterday and
today, on a pyramid REST-ish toolkit, &lt;a class="reference external" href="https://github.com/mozilla-services/cornice"&gt;cornice&lt;/a&gt;.&lt;/p&gt;
&lt;p&gt;Cornice allows you to take out from you all the repetitive stuff you do when
writing a web service. I'm mainly thinking about different kinds of validation.&lt;/p&gt;
<feed xmlns="http://www.w3.org/2005/Atom"><title>Alexis' log</title><link href="http://blog.notmyidea.org" rel="alternate"></link><link href="http://blog.notmyidea.org/feeds/all-en.atom.xml" rel="self"></link><id>http://blog.notmyidea.org</id><updated>2011-12-06T00:00:00+01:00</updated><entry><title>Introducing cornice</title><link href="http://blog.notmyidea.org/introducing-cornice.html" rel="alternate"></link><updated>2011-12-06T00:00:00+01:00</updated><author><name>Alexis Métaireau</name></author><id>tag:blog.notmyidea.org,2011-12-06:/introducing-cornice.html/</id><summary type="html">&lt;p&gt;Wow, already my third working day at mozilla. Since Monday, I've been working with
Tarek Ziadé, on a pyramid REST-ish toolkit named &lt;a class="reference external" href="https://github.com/mozilla-services/cornice"&gt;cornice&lt;/a&gt;.&lt;/p&gt;
&lt;p&gt;Its goal is to take all the hard bits appart from you when implementing a web
service, so you can focus on what's important. Cornice provides you facilities
for validation of any kind.&lt;/p&gt;
&lt;p&gt;The goal is to simplify your work, but we don't want to reinvent the wheel, so
it is easily pluggable with validations frameworks, such as Collander.&lt;/p&gt;
&lt;div class="section" id="handling-errors-and-validation"&gt;
&lt;h2&gt;Handling errors and validation&lt;/h2&gt;
&lt;p&gt;We have changed the way errors are handled. Here is how it works:&lt;/p&gt;
&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span class="n"&gt;service&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="n"&gt;Service&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="n"&gt;name&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt;&lt;span class="s"&gt;&amp;quot;service&amp;quot;&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="n"&gt;path&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt;&lt;span class="s"&gt;&amp;quot;/service&amp;quot;&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt;
&lt;span class="k"&gt;def&lt;/span&gt; &lt;span class="nf"&gt;is_awesome&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="n"&gt;request&lt;/span&gt;&lt;span class="p"&gt;):&lt;/span&gt;
&lt;span class="k"&gt;if&lt;/span&gt; &lt;span class="ow"&gt;not&lt;/span&gt; &lt;span class="s"&gt;&amp;#39;awesome&amp;#39;&lt;/span&gt; &lt;span class="ow"&gt;in&lt;/span&gt; &lt;span class="n"&gt;request&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="n"&gt;GET&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt;
&lt;span class="n"&gt;request&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="n"&gt;errors&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="n"&gt;add&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="s"&gt;&amp;#39;body&amp;#39;&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="s"&gt;&amp;#39;awesome&amp;#39;&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="s"&gt;&amp;#39;You lack awesomeness!&amp;#39;&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt;
&lt;span class="nd"&gt;@service.get&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="n"&gt;validator&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="n"&gt;is_awesome&lt;/span&gt;&lt;span class="p"&gt;))&lt;/span&gt;
&lt;span class="k"&gt;def&lt;/span&gt; &lt;span class="nf"&gt;get1&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="n"&gt;request&lt;/span&gt;&lt;span class="p"&gt;):&lt;/span&gt;
&lt;span class="k"&gt;return&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;&lt;span class="s"&gt;&amp;quot;test&amp;quot;&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="s"&gt;&amp;quot;succeeded&amp;quot;&lt;/span&gt;&lt;span class="p"&gt;}&lt;/span&gt;
&lt;/pre&gt;&lt;/div&gt;
&lt;p&gt;All the errors collected during the validation process, or after, are collected
before returning the request. If any, a error 400 is fired up, with the list of
problems encoutred encoded as a nice json list (we plan to support multiple
formats in the future)&lt;/p&gt;
&lt;p&gt;As you might have seen, &lt;cite&gt;request.errors.add&lt;/cite&gt; takes three parameters: &lt;strong&gt;location&lt;/strong&gt;,
&lt;strong&gt;name&lt;/strong&gt; and &lt;strong&gt;description&lt;/strong&gt;.&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;location&lt;/strong&gt; is where the error arised. It can either be &amp;quot;body&amp;quot;, &amp;quot;query&amp;quot;, &amp;quot;headers&amp;quot;
or &amp;quot;path&amp;quot;. &lt;strong&gt;name&lt;/strong&gt; is the name of the variable causing problem, if any, and
&lt;strong&gt;description&lt;/strong&gt; contains a more detailled message.&lt;/p&gt;
&lt;p&gt;Here is an example of a malformed request:&lt;/p&gt;
&lt;pre class="literal-block"&gt;
$ # run a demo app
&lt;/pre&gt;
&lt;p&gt;To describe a web service in &lt;em&gt;cornice&lt;/em&gt;, you have to write something like this&lt;/p&gt;
&lt;div class="system-message"&gt;
&lt;p class="system-message-title"&gt;System Message: ERROR/3 (&lt;tt class="docutils"&gt;./content/mozilla/introducing-cornice.rst&lt;/tt&gt;, line 14)&lt;/p&gt;
&lt;p class="system-message-title"&gt;System Message: ERROR/3 (&lt;tt class="docutils"&gt;./content/mozilla/introducing-cornice.rst&lt;/tt&gt;, line 54)&lt;/p&gt;
&lt;p&gt;Content block expected for the &amp;quot;code-block&amp;quot; directive; none found.&lt;/p&gt;
&lt;pre class="literal-block"&gt;
.. code-block:: python
&lt;/pre&gt;
&lt;/div&gt;
&lt;/div&gt;
</summary></entry><entry><title>How are you handling your shared expenses?</title><link href="http://blog.notmyidea.org/how-are-you-handling-your-shared-expenses.html" rel="alternate"></link><updated>2011-10-15T00:00:00+02:00</updated><author><name>Alexis Métaireau</name></author><id>tag:blog.notmyidea.org,2011-10-15:/how-are-you-handling-your-shared-expenses.html/</id><summary type="html">&lt;p&gt;&lt;strong&gt;TL;DR:&lt;/strong&gt; We're kick-starting a new application to manage your shared
expenses. Have a look at &lt;a class="reference external" href="http://ihatemoney.notmyidea.org"&gt;http://ihatemoney.notmyidea.org&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;As a student, I lived in a lot of different locations, and the majority of them

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<?xml version="1.0" encoding="utf-8"?>
<feed xmlns="http://www.w3.org/2005/Atom"><title>Alexis' log</title><link href="http://blog.notmyidea.org" rel="alternate"></link><link href="http://blog.notmyidea.org/feeds/all.atom.xml" rel="self"></link><id>http://blog.notmyidea.org</id><updated>2011-12-06T00:00:00+01:00</updated><entry><title>Introducing cornice</title><link href="http://blog.notmyidea.org/introducing-cornice.html" rel="alternate"></link><updated>2011-12-06T00:00:00+01:00</updated><author><name>Alexis Métaireau</name></author><id>tag:blog.notmyidea.org,2011-12-06:/introducing-cornice.html/</id><summary type="html">&lt;p&gt;Wow, this is my second working day at mozilla. I've been working, yesterday and
today, on a pyramid REST-ish toolkit, &lt;a class="reference external" href="https://github.com/mozilla-services/cornice"&gt;cornice&lt;/a&gt;.&lt;/p&gt;
&lt;p&gt;Cornice allows you to take out from you all the repetitive stuff you do when
writing a web service. I'm mainly thinking about different kinds of validation.&lt;/p&gt;
<feed xmlns="http://www.w3.org/2005/Atom"><title>Alexis' log</title><link href="http://blog.notmyidea.org" rel="alternate"></link><link href="http://blog.notmyidea.org/feeds/all.atom.xml" rel="self"></link><id>http://blog.notmyidea.org</id><updated>2011-12-06T00:00:00+01:00</updated><entry><title>Introducing cornice</title><link href="http://blog.notmyidea.org/introducing-cornice.html" rel="alternate"></link><updated>2011-12-06T00:00:00+01:00</updated><author><name>Alexis Métaireau</name></author><id>tag:blog.notmyidea.org,2011-12-06:/introducing-cornice.html/</id><summary type="html">&lt;p&gt;Wow, already my third working day at mozilla. Since Monday, I've been working with
Tarek Ziadé, on a pyramid REST-ish toolkit named &lt;a class="reference external" href="https://github.com/mozilla-services/cornice"&gt;cornice&lt;/a&gt;.&lt;/p&gt;
&lt;p&gt;Its goal is to take all the hard bits appart from you when implementing a web
service, so you can focus on what's important. Cornice provides you facilities
for validation of any kind.&lt;/p&gt;
&lt;p&gt;The goal is to simplify your work, but we don't want to reinvent the wheel, so
it is easily pluggable with validations frameworks, such as Collander.&lt;/p&gt;
&lt;div class="section" id="handling-errors-and-validation"&gt;
&lt;h2&gt;Handling errors and validation&lt;/h2&gt;
&lt;p&gt;We have changed the way errors are handled. Here is how it works:&lt;/p&gt;
&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span class="n"&gt;service&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="n"&gt;Service&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="n"&gt;name&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt;&lt;span class="s"&gt;&amp;quot;service&amp;quot;&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="n"&gt;path&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt;&lt;span class="s"&gt;&amp;quot;/service&amp;quot;&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt;
&lt;span class="k"&gt;def&lt;/span&gt; &lt;span class="nf"&gt;is_awesome&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="n"&gt;request&lt;/span&gt;&lt;span class="p"&gt;):&lt;/span&gt;
&lt;span class="k"&gt;if&lt;/span&gt; &lt;span class="ow"&gt;not&lt;/span&gt; &lt;span class="s"&gt;&amp;#39;awesome&amp;#39;&lt;/span&gt; &lt;span class="ow"&gt;in&lt;/span&gt; &lt;span class="n"&gt;request&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="n"&gt;GET&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt;
&lt;span class="n"&gt;request&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="n"&gt;errors&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="n"&gt;add&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="s"&gt;&amp;#39;body&amp;#39;&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="s"&gt;&amp;#39;awesome&amp;#39;&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="s"&gt;&amp;#39;You lack awesomeness!&amp;#39;&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt;
&lt;span class="nd"&gt;@service.get&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="n"&gt;validator&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="n"&gt;is_awesome&lt;/span&gt;&lt;span class="p"&gt;))&lt;/span&gt;
&lt;span class="k"&gt;def&lt;/span&gt; &lt;span class="nf"&gt;get1&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="n"&gt;request&lt;/span&gt;&lt;span class="p"&gt;):&lt;/span&gt;
&lt;span class="k"&gt;return&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;&lt;span class="s"&gt;&amp;quot;test&amp;quot;&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="s"&gt;&amp;quot;succeeded&amp;quot;&lt;/span&gt;&lt;span class="p"&gt;}&lt;/span&gt;
&lt;/pre&gt;&lt;/div&gt;
&lt;p&gt;All the errors collected during the validation process, or after, are collected
before returning the request. If any, a error 400 is fired up, with the list of
problems encoutred encoded as a nice json list (we plan to support multiple
formats in the future)&lt;/p&gt;
&lt;p&gt;As you might have seen, &lt;cite&gt;request.errors.add&lt;/cite&gt; takes three parameters: &lt;strong&gt;location&lt;/strong&gt;,
&lt;strong&gt;name&lt;/strong&gt; and &lt;strong&gt;description&lt;/strong&gt;.&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;location&lt;/strong&gt; is where the error arised. It can either be &amp;quot;body&amp;quot;, &amp;quot;query&amp;quot;, &amp;quot;headers&amp;quot;
or &amp;quot;path&amp;quot;. &lt;strong&gt;name&lt;/strong&gt; is the name of the variable causing problem, if any, and
&lt;strong&gt;description&lt;/strong&gt; contains a more detailled message.&lt;/p&gt;
&lt;p&gt;Here is an example of a malformed request:&lt;/p&gt;
&lt;pre class="literal-block"&gt;
$ # run a demo app
&lt;/pre&gt;
&lt;p&gt;To describe a web service in &lt;em&gt;cornice&lt;/em&gt;, you have to write something like this&lt;/p&gt;
&lt;div class="system-message"&gt;
&lt;p class="system-message-title"&gt;System Message: ERROR/3 (&lt;tt class="docutils"&gt;./content/mozilla/introducing-cornice.rst&lt;/tt&gt;, line 14)&lt;/p&gt;
&lt;p class="system-message-title"&gt;System Message: ERROR/3 (&lt;tt class="docutils"&gt;./content/mozilla/introducing-cornice.rst&lt;/tt&gt;, line 54)&lt;/p&gt;
&lt;p&gt;Content block expected for the &amp;quot;code-block&amp;quot; directive; none found.&lt;/p&gt;
&lt;pre class="literal-block"&gt;
.. code-block:: python
&lt;/pre&gt;
&lt;/div&gt;
&lt;/div&gt;
</summary></entry><entry><title>Quels usages pour l'informatique ?</title><link href="http://blog.notmyidea.org/quels-usages-pour-linformatique-fr.html" rel="alternate"></link><updated>2011-12-01T00:00:00+01:00</updated><author><name>Alexis Métaireau</name></author><id>tag:blog.notmyidea.org,2011-12-01:/quels-usages-pour-linformatique-fr.html/</id><summary type="html">&lt;p&gt;Quand on termine ses études, on s'en pose un tas, des questions. Sur le métier
que l'on veut faire, sur ce que ça signifie, sur le sens et la valeur du
travail. Et j'en suis arrivé à faire un constat simple: l'informatique, c'est

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<?xml version="1.0" encoding="utf-8"?>
<feed xmlns="http://www.w3.org/2005/Atom"><title>Alexis' log</title><link href="http://blog.notmyidea.org" rel="alternate"></link><link href="http://blog.notmyidea.org/feeds/mozilla.atom.xml" rel="self"></link><id>http://blog.notmyidea.org</id><updated>2011-12-06T00:00:00+01:00</updated><entry><title>Introducing cornice</title><link href="http://blog.notmyidea.org/introducing-cornice.html" rel="alternate"></link><updated>2011-12-06T00:00:00+01:00</updated><author><name>Alexis Métaireau</name></author><id>tag:blog.notmyidea.org,2011-12-06:/introducing-cornice.html/</id><summary type="html">&lt;p&gt;Wow, this is my second working day at mozilla. I've been working, yesterday and
today, on a pyramid REST-ish toolkit, &lt;a class="reference external" href="https://github.com/mozilla-services/cornice"&gt;cornice&lt;/a&gt;.&lt;/p&gt;
&lt;p&gt;Cornice allows you to take out from you all the repetitive stuff you do when
writing a web service. I'm mainly thinking about different kinds of validation.&lt;/p&gt;
<feed xmlns="http://www.w3.org/2005/Atom"><title>Alexis' log</title><link href="http://blog.notmyidea.org" rel="alternate"></link><link href="http://blog.notmyidea.org/feeds/mozilla.atom.xml" rel="self"></link><id>http://blog.notmyidea.org</id><updated>2011-12-06T00:00:00+01:00</updated><entry><title>Introducing cornice</title><link href="http://blog.notmyidea.org/introducing-cornice.html" rel="alternate"></link><updated>2011-12-06T00:00:00+01:00</updated><author><name>Alexis Métaireau</name></author><id>tag:blog.notmyidea.org,2011-12-06:/introducing-cornice.html/</id><summary type="html">&lt;p&gt;Wow, already my third working day at mozilla. Since Monday, I've been working with
Tarek Ziadé, on a pyramid REST-ish toolkit named &lt;a class="reference external" href="https://github.com/mozilla-services/cornice"&gt;cornice&lt;/a&gt;.&lt;/p&gt;
&lt;p&gt;Its goal is to take all the hard bits appart from you when implementing a web
service, so you can focus on what's important. Cornice provides you facilities
for validation of any kind.&lt;/p&gt;
&lt;p&gt;The goal is to simplify your work, but we don't want to reinvent the wheel, so
it is easily pluggable with validations frameworks, such as Collander.&lt;/p&gt;
&lt;div class="section" id="handling-errors-and-validation"&gt;
&lt;h2&gt;Handling errors and validation&lt;/h2&gt;
&lt;p&gt;We have changed the way errors are handled. Here is how it works:&lt;/p&gt;
&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span class="n"&gt;service&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="n"&gt;Service&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="n"&gt;name&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt;&lt;span class="s"&gt;&amp;quot;service&amp;quot;&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="n"&gt;path&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt;&lt;span class="s"&gt;&amp;quot;/service&amp;quot;&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt;
&lt;span class="k"&gt;def&lt;/span&gt; &lt;span class="nf"&gt;is_awesome&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="n"&gt;request&lt;/span&gt;&lt;span class="p"&gt;):&lt;/span&gt;
&lt;span class="k"&gt;if&lt;/span&gt; &lt;span class="ow"&gt;not&lt;/span&gt; &lt;span class="s"&gt;&amp;#39;awesome&amp;#39;&lt;/span&gt; &lt;span class="ow"&gt;in&lt;/span&gt; &lt;span class="n"&gt;request&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="n"&gt;GET&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt;
&lt;span class="n"&gt;request&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="n"&gt;errors&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="n"&gt;add&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="s"&gt;&amp;#39;body&amp;#39;&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="s"&gt;&amp;#39;awesome&amp;#39;&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="s"&gt;&amp;#39;You lack awesomeness!&amp;#39;&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt;
&lt;span class="nd"&gt;@service.get&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="n"&gt;validator&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="n"&gt;is_awesome&lt;/span&gt;&lt;span class="p"&gt;))&lt;/span&gt;
&lt;span class="k"&gt;def&lt;/span&gt; &lt;span class="nf"&gt;get1&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="n"&gt;request&lt;/span&gt;&lt;span class="p"&gt;):&lt;/span&gt;
&lt;span class="k"&gt;return&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;&lt;span class="s"&gt;&amp;quot;test&amp;quot;&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt; &lt;span class="s"&gt;&amp;quot;succeeded&amp;quot;&lt;/span&gt;&lt;span class="p"&gt;}&lt;/span&gt;
&lt;/pre&gt;&lt;/div&gt;
&lt;p&gt;All the errors collected during the validation process, or after, are collected
before returning the request. If any, a error 400 is fired up, with the list of
problems encoutred encoded as a nice json list (we plan to support multiple
formats in the future)&lt;/p&gt;
&lt;p&gt;As you might have seen, &lt;cite&gt;request.errors.add&lt;/cite&gt; takes three parameters: &lt;strong&gt;location&lt;/strong&gt;,
&lt;strong&gt;name&lt;/strong&gt; and &lt;strong&gt;description&lt;/strong&gt;.&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;location&lt;/strong&gt; is where the error arised. It can either be &amp;quot;body&amp;quot;, &amp;quot;query&amp;quot;, &amp;quot;headers&amp;quot;
or &amp;quot;path&amp;quot;. &lt;strong&gt;name&lt;/strong&gt; is the name of the variable causing problem, if any, and
&lt;strong&gt;description&lt;/strong&gt; contains a more detailled message.&lt;/p&gt;
&lt;p&gt;Here is an example of a malformed request:&lt;/p&gt;
&lt;pre class="literal-block"&gt;
$ # run a demo app
&lt;/pre&gt;
&lt;p&gt;To describe a web service in &lt;em&gt;cornice&lt;/em&gt;, you have to write something like this&lt;/p&gt;
&lt;div class="system-message"&gt;
&lt;p class="system-message-title"&gt;System Message: ERROR/3 (&lt;tt class="docutils"&gt;./content/mozilla/introducing-cornice.rst&lt;/tt&gt;, line 14)&lt;/p&gt;
&lt;p class="system-message-title"&gt;System Message: ERROR/3 (&lt;tt class="docutils"&gt;./content/mozilla/introducing-cornice.rst&lt;/tt&gt;, line 54)&lt;/p&gt;
&lt;p&gt;Content block expected for the &amp;quot;code-block&amp;quot; directive; none found.&lt;/p&gt;
&lt;pre class="literal-block"&gt;
.. code-block:: python
&lt;/pre&gt;
&lt;/div&gt;
&lt;/div&gt;
</summary></entry></feed>

43
introducing-cornice.html
View file

@ -14,20 +14,51 @@
<div class="content clear">
<h1>Introducing cornice</h1>
<p class="date">Published on Tue 06 December 2011</p>
<p>Wow, this is my second working day at mozilla. I've been working, yesterday and
today, on a pyramid REST-ish toolkit, <a class="reference external" href="https://github.com/mozilla-services/cornice">cornice</a>.</p>
<p>Cornice allows you to take out from you all the repetitive stuff you do when
writing a web service. I'm mainly thinking about different kinds of validation.</p>
<p>Wow, already my third working day at mozilla. Since Monday, I've been working with
Tarek Ziadé, on a pyramid REST-ish toolkit named <a class="reference external" href="https://github.com/mozilla-services/cornice">cornice</a>.</p>
<p>Its goal is to take all the hard bits appart from you when implementing a web
service, so you can focus on what's important. Cornice provides you facilities
for validation of any kind.</p>
<p>The goal is to simplify your work, but we don't want to reinvent the wheel, so
it is easily pluggable with validations frameworks, such as Collander.</p>
<div class="section" id="handling-errors-and-validation">
<h2>Handling errors and validation</h2>
<p>We have changed the way errors are handled. Here is how it works:</p>
<div class="highlight"><pre><span class="n">service</span> <span class="o">=</span> <span class="n">Service</span><span class="p">(</span><span class="n">name</span><span class="o">=</span><span class="s">&quot;service&quot;</span><span class="p">,</span> <span class="n">path</span><span class="o">=</span><span class="s">&quot;/service&quot;</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">is_awesome</span><span class="p">(</span><span class="n">request</span><span class="p">):</span>
<span class="k">if</span> <span class="ow">not</span> <span class="s">&#39;awesome&#39;</span> <span class="ow">in</span> <span class="n">request</span><span class="o">.</span><span class="n">GET</span><span class="p">:</span>
<span class="n">request</span><span class="o">.</span><span class="n">errors</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="s">&#39;body&#39;</span><span class="p">,</span> <span class="s">&#39;awesome&#39;</span><span class="p">,</span> <span class="s">&#39;You lack awesomeness!&#39;</span><span class="p">)</span>
<span class="nd">@service.get</span><span class="p">(</span><span class="n">validator</span><span class="o">=</span><span class="p">(</span><span class="n">is_awesome</span><span class="p">))</span>
<span class="k">def</span> <span class="nf">get1</span><span class="p">(</span><span class="n">request</span><span class="p">):</span>
<span class="k">return</span> <span class="p">{</span><span class="s">&quot;test&quot;</span><span class="p">:</span> <span class="s">&quot;succeeded&quot;</span><span class="p">}</span>
</pre></div>
<p>All the errors collected during the validation process, or after, are collected
before returning the request. If any, a error 400 is fired up, with the list of
problems encoutred encoded as a nice json list (we plan to support multiple
formats in the future)</p>
<p>As you might have seen, <cite>request.errors.add</cite> takes three parameters: <strong>location</strong>,
<strong>name</strong> and <strong>description</strong>.</p>
<p><strong>location</strong> is where the error arised. It can either be &quot;body&quot;, &quot;query&quot;, &quot;headers&quot;
or &quot;path&quot;. <strong>name</strong> is the name of the variable causing problem, if any, and
<strong>description</strong> contains a more detailled message.</p>
<p>Here is an example of a malformed request:</p>
<pre class="literal-block">
$ # run a demo app
</pre>
<p>To describe a web service in <em>cornice</em>, you have to write something like this</p>
<div class="system-message">
<p class="system-message-title">System Message: ERROR/3 (<tt class="docutils">./content/mozilla/introducing-cornice.rst</tt>, line 14)</p>
<p class="system-message-title">System Message: ERROR/3 (<tt class="docutils">./content/mozilla/introducing-cornice.rst</tt>, line 54)</p>
<p>Content block expected for the &quot;code-block&quot; directive; none found.</p>
<pre class="literal-block">
.. code-block:: python
</pre>
</div>
</div>