mirror of
https://github.com/Shopify/liquid.git
synced 2026-09-17 18:00:41 -07:00
Migrated from using-liquid-without-rails v11
@@ -7,7 +7,8 @@ The big secret, however, is creating a @to_liquid@ method for any classes you wa
|
||||
|
||||
Let's say you have a Product class:
|
||||
|
||||
<pre><code>class Product
|
||||
<pre>
|
||||
class Product
|
||||
attr_accessor :name, :price
|
||||
|
||||
def initialize(name,price)
|
||||
@@ -15,25 +16,28 @@ Let's say you have a Product class:
|
||||
@price = price
|
||||
end
|
||||
end
|
||||
</code></pre>
|
||||
</pre>
|
||||
|
||||
And you have a chunk of text that you want to Liquidize by inserting some details about your products:
|
||||
|
||||
<pre><code>sentence = "I'm running to the store with {{ product.price }} dollars in my pocket "
|
||||
<pre>
|
||||
sentence = "I'm running to the store with {{ product.price }} dollars in my pocket "
|
||||
sentence += "to buy a {{ product.name }}."
|
||||
</code></pre>
|
||||
</pre>
|
||||
|
||||
And you create a product and parse the sentence:
|
||||
|
||||
<pre><code>my_purchase = Product.new('box of sausages', 20)
|
||||
<pre>
|
||||
my_purchase = Product.new('box of sausages', 20)
|
||||
puts Liquid::Template.parse(sentence).render('product' => my_purchase)
|
||||
</code></pre>
|
||||
</pre>
|
||||
|
||||
You excitedly execute your code, expecting to see your beautiful new sentence, but instead you get:
|
||||
|
||||
<pre><code>I'm running to the store with Liquid error:
|
||||
<pre>
|
||||
I'm running to the store with Liquid error:
|
||||
undefined method `to_liquid' for #<Product:0x1388c08 ...
|
||||
</code></pre>
|
||||
</pre>
|
||||
|
||||
@to_liquid@ ???
|
||||
Where did that come from?
|
||||
@@ -42,7 +46,8 @@ Turns out you need to add a method to your class that returns your instance vari
|
||||
so you need to explicitly let Liquid know how to access everything in your object.)
|
||||
So, we update the @Product@ class description to include that method:
|
||||
|
||||
<pre><code>class Product
|
||||
<pre>
|
||||
class Product
|
||||
attr_accessor :name, :price
|
||||
|
||||
def initialize(name, price)
|
||||
@@ -55,16 +60,18 @@ So, we update the @Product@ class description to include that method:
|
||||
"price" => self.price }
|
||||
end
|
||||
end
|
||||
</code></pre>
|
||||
</pre>
|
||||
|
||||
Run that again and presto:
|
||||
|
||||
<pre><code>I'm running to the store with 20 dollars in my pocket to buy a box of sausages.
|
||||
</code></pre>
|
||||
<pre>
|
||||
I'm running to the store with 20 dollars in my pocket to buy a box of sausages.
|
||||
</pre>
|
||||
|
||||
However, that's a bit verbose, so you may want to use @liquid_methods@, instead:
|
||||
|
||||
<pre><code>class Product
|
||||
<pre>
|
||||
class Product
|
||||
attr_accessor :name, :price
|
||||
liquid_methods :name, :price
|
||||
|
||||
@@ -73,6 +80,6 @@ However, that's a bit verbose, so you may want to use @liquid_methods@, instead:
|
||||
@price = price
|
||||
end
|
||||
end
|
||||
</code></pre>
|
||||
</pre>
|
||||
|
||||
(Thanks to "Tom's":http://github.com/mojombo "Jekyll":http://github.com/mojombo/jekyll/tree/master/lib/jekyll/post.rb#L122-128 code for helping me figuring this out.)
|
||||
Reference in New Issue
Block a user