Can snippets take parameters in lift?
Is there a way in lift to pass parameters to snippets?
I am trying to write a pluraize filter for my page that will display the word "user" or "users" depending on how many there are:
1 user
2 users
The way it works in Django is called filters and they are written as follows:
You have {{ num_messages }} message{{ num_messages|pluralize }}.
So here you can see pluralize function takes an integer num_messages and outputs and appropriate string - either empty "" o开发者_如何学编程r "s".
EDIT: Note that the num_messages in this case is an actual context variable, passed down to the template from the view.
You can pass parameters to snippets, yes.
class MySnippet {
def foo: NodeSeq = {
x = S.attr("myparam") openOr "myparam: Y U NO DEFINED!?"
<p>I got {x}!</p>
}
}
Use:
<lift:MySnippet.foo myparam="3"/>
Or, newer Lift 2.3+ style:
<div class="lift:MySnippet.foo?myparam=3"/>
<div id="main" class="cl1 cl2 lift:surround?with=default;at=content">
This is also a snippet invocation with parameters.
See lift docs: Lift docs, 3.4.1 Snippets in markup
In order to indicate that content is dynamic, the markup contains a snippet invocation. That typically takes the form class="someclass someothercss lift:mysnippet". If a class attribute contains lift:xxx, the xxx will be resolved to a snippet. The snippet may take attributes. Attributes are encoded like URL parameters... offset by a ? (question mark), then name=value, separted by ? (question mark), ; (semicolon) or & (ampersand). name and value are URL encoded.
Can't you do it like this way.
<div class="lift:MyClass">
You have <span class="num_messages"/>.
</div>
and your lift code would look something like:
class MyClass {
def render = "num_messages" #> (num_messages + pluralize("message", num_messages))
}
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