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samskivert / jmustache

A Java implementation of the Mustache templating language.
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Contextual Lambda for Dynamic Partial Implementation #53

Closed jonhartmann closed 10 years ago

jonhartmann commented 10 years ago

I was trying to replicate the technique used in this post:

http://stackoverflow.com/questions/9162977/is-it-possible-to-switch-template-partial-based-on-hash-value-in-mustache

In order to solve the same problem with JMustache (switching templates based on an object properties), but the lack of a context when evaluating the Lambda is killing it. I've tried to hack the code to get a version with Context, but its not going well (I'm not super proficient at Java). Any chance we can get a better Lambda implementation so I can pull it off?

samskivert commented 10 years ago

20abde5b1abcbf50ff8f9cc607ac33fed3f45339 should do what you want.

samskivert commented 10 years ago

It's a little pesky that you still have to use a block for the lamda, but as far as I can tell from the docs, lambdas were only ever meant to occur for blocks (not totally crazy since the lambda is supposed to be able to execute the template fragment inside the block). This is clearly a somewhat special use case, so I'm not inclined to also add support for bodyless lambdas (i.e. lambdas appearing as plain old lookups like {{mylambda}}).