[groovy-user] MarkupBuilder with dynamic attribute names
John Hartnup
With MarkupBuilder, I can easily create XML nodes by including them as
literals in the Builder invocation:
builder.html {
head { title "My HTML Document" }
}
But what if I want a node with a name that is set at runtime?
def elementName = "title" // could have been input by the user, read
from config, etc.
builder.html {
head {
// how do I cause the builder to output a node named from
elementName here?
}
}
I bet it's obvious, but I've been scratching my head for a while.
Thanks,
John
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Tim Yates
import groovy.xml.MarkupBuilder
def elementName = "title" // could have been input by the user, read from config, etc.
new MarkupBuilder( sw ).html {
head {
"$elementName" "a title"
}
}
println sw
Tim
John Hartnup
virtualeyes
Easy enough to interpolate a variable into the builder, but how, if even
possible, would one use a builder in a non-static manner; i.e. one has to
define the start end points (curley braces) in order to get
<tag>content</tag>.
Is there any way to return the start end tags and build (in my case html)
the string dynamically using groovy closure functionality?
example:
import groovy.xml.MarkupBuilder
def sw = new StringWriter()
def build = new MarkupBuilder( sw )
def tags = build.html {} // would like to have here: <html></html>
tags += build.head {}
tags += build.title {"$someTitle"}
if(someCondition) tags += build.specialtag {"$specialness"}
...
and then somehow recurse through the tags using split('><') + inject() to
dynamically create what one would typically do statically with a builder?
Basically I'd like the markup output to be any combination of tags, and not
statically defined.
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virtualeyes
Actually, with streaming markup builder one can already do this it seems.
Just need to pass builder instance to helper methods outside of the bind
closure; then you can apply conditional logic to build whatever markup that
you need.
Absolutely fantabulous, btw, tagging functionality to build any kind of
markup -- laying concise html templates and forms is cake now ;--)
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