dustin

Better templating with LinkedIn's dust fork.

Dustin extends dust with some missing functionality like cache control and formatting option for white space preservation.

It also provides a convenient express engine (dust.__express). This package also includes dustjs-helpers alongside some useful helpers.

Install

npm i dustin --save

Usage

var dustin = require("dustin")
var dust = dustin({
  cache: true,
  views: "/",
  helpers: "helpers/*.js",
  whiteSpace: true
})

cache

If false, every dust.render() will purge the cache. It is especially useful for development, when changes to a template should be reflected in the browser on reload.

views

Partials will resolve to this folder. It helps so you don't have to write full template paths all the time.

helpers

A glob pattern for user helpers to extend the dust.helpers object.

A helper should export a function with one or two arguments:

module.exports = function( helpers, dust ){
  helpers.something = function(chunk, context, bodies, params){}
}

extended API

dust.__express

An express engine.

Hook it to express like this:

var dustin = require("dustin")
var engine = dustin({
  cache: false,
  views: "app/views",
  helpers: "app/helpers/*.js",
  whiteSpace: true
})
app.engine("dust", engine.__express)
app.set("view engine", "dust")
app.set("views", "app/views")
app.set("view cache", false)

getTemplateNameFromPath(path)

Returns a template name according to the options you passed to dustin

getTemplatePathFromName(name)

Returns an absolute path concatenated from the cwd, the template dir you passed to dustin and the name argument with the .dust extension

Copy client libraries

var dustin = require("dustin")
dustin.client("destination folder", "resolve path", {
   dust: true,
   user: "",
   custom: ""
 })

destination

Client side scripts will be copied here.

resolve path

Client templates are loaded like this:

script.src =  /^(https?:)?\/\/?/.test(template)
  ? template
  : ("RESOLVE_PATH"   "/"   template   ".js").replace(/\/ /g, "/")

Set the resolve path to a template root.

Custom helpers

for

Params:

$key:

a variable name for the key. defaults to $key

$value:

a variable for the value. defaults to $value

$in:

the object to iterate over if not provided context.current() will be used

params are prefixed with a $ so it's less likely they clash with context members

@example

Context

"ooo": {
  "a": {
    "1": "1"
  },
  "b": {
    "2": "2"
  }
}

Template

{@for var="asd" value="qwe" $in=ooo}
  {asd}
  {@for:qwe}
    {$key} - {$value} {~n}
  {/for}
{/for}

Output

a1 - 1
b2 - 2

include

Embed a file from the file system into the template.

Params

src

The file's source.

macro

Render a partial's body with the macro's params (except the partial).

Params

partial

The template name of a partial

with

This simply sets the context to the head of the stack. It helps cutting down on typing accessors.

context

"someObject": {
  "a": "hello",
  "b": "hi"
}

template

{@with:someObject}
  {a}{~n}
  {b}
{/with}

Output

hello
hi

Client side extended API

dust.renderElement( template, context, done )

The same as dust.render, but instead of a string it calls done(err, out) with a document fragment.

Licence

MIT