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_posts/objects/metafield.md

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+---
+layout: default
+title: metafield
+nav:
+  group: Liquid Variables
+---
+
+# metafields
+
+The <code>metafields</code> object allows you to store additional information for products, collections, orders, blogs, pages and your shop. You can output metafields on your storefront using Liquid. 
+
+There are several Shopify apps and browser add-ons that make use of the [Shopify API](/api/metafield) to let you manage your metafields:
+
+* [Shopify FD](http://shopify.freakdesign.com.au/#ShopifyFD) to create and edit metafields
+* [Custom Fields](http://shopify.freakdesign.com.au/#customfields) to edit your metafields
+* [Metafields Editor](http://apps.shopify.com/metafields-editor)
+* [Metafields2](http://apps.shopify.com/metafields2)
+
+A metafield consists of a namespace, a key, a value, and a description (optional). Use the namespace to group different metafields together in a logical way. 
+
+You can also specify metafields as either integers or strings. That way, you’ll end up with the right type of data when you use the metafields in your Liquid.
+
+For example, if  you’ve added two metafields to a product, and each metafield has the following attributes:
+
+<table>
+  <tr>
+     <th>Namespace</th>
+     <th>Key</th>
+     <th>Value</th>
+  </tr>
+  <tbody>
+    <tr>
+      <td>instructions</td>
+      <td>Wash</td>
+      <td>Cold</td>
+    </tr>
+   <tr>
+      <td>instructions</td>
+      <td>Dry</td>
+      <td>Tumble</td>
+    </tr>
+  </tbody>
+</table>
+
+You can then use the following Liquid in <tt>product.liquid</tt> to output your metafield:
+
+<p class="input">Input</p>
+{% highlight html %}
+{% raw %}
+{% assign instructions = product.metafields.instructions %}
+{% assign key = 'Wash' %}	
+<ul>
+  <li>Wash: {{ instructions[key] }}</li>
+  <li>Wash: {{ instructions['Wash'] }}</li>
+  <li>Wash: {{ instructions.Wash }}</li>
+</ul> 
+{% endraw %}
+{% endhighlight %}
+
+<p class="output">Output</p>
+{% highlight html %}
+Wash: Cold
+Wash: Cold
+Wash: Cold
+{% endhighlight %}
+
+You can use the following in <tt>product.liquid</tt> to output your second metafield:
+
+{% highlight html %}
+{% raw %}
+{% assign instructions = product.metafields.instructions %}
+{% assign key = 'Dry' %}	
+<ul>
+  <li>Dry: {{ instructions[key] }}</li>
+  <li>Dry: {{ instructions['Dry'] }}</li>
+  <li>Dry: {{ instructions.Dry }}</li>
+</ul> 
+{% endraw %}
+{% endhighlight %}
+
+If you need to output all metafields with the namespace _instructions_ attached to a given product, use the following Liquid: 
+
+<p class="input">Input</p>
+{% highlight html %}
+{% raw %}
+<ul>
+   {% for field in product.metafields.instructions %}
+   <li>{{ field | first }}: {{ field | last }}</li>
+   {% endfor %}
+</ul>
+{% endraw %}
+{% endhighlight %}
+
+<p class="output">Output</p>
+{% highlight html %}
+Wash: Cold
+Dry: Tumble 
+{% endhighlight %}
+
+The key of a metafield is <code>{% raw %}{{ field | first }}{% endraw %}</code>, while the value is <code>{% raw %}{{ field | last }}{% endraw %}</code>.