helper-compose
v0.1.1
Published
{{compose}} handlebars helper. Inlines content from multiple files optionally using wildcard (globbing/minimatch) patterns, extracts YAML front matter to pass to context for each file. Accepts compare function as 3rd parameter for sorting inlined files.
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{{compose}}
{{compose}} handlebars helper. Inlines content from multiple files optionally using wildcard (globbing/minimatch) patterns, extracts YAML front matter to pass to context for each file. Accepts compare function as 3rd parameter for sorting inlined files.
Quickstart
In the root of your project, run the following in the command line:
npm i helper-compose --save-dev
Next, in your Gruntfile, simply add helper-compose
to the helpers
property in the Assemble task or target options:
grunt.initConfig({
assemble: {
options: {
// the 'helper-compose' modules must also be listed in devDependencies
// for assemble to automatically resolve the helper
helpers: ['helper-compose']
}
files: {...}
}
});
With that completed, you may now use the {{compose}}
helper in your templates:
{{compose 'path/to/files/*.hbs'}}
<h1>Title: {{title}}</h1>
{{{content}}}</p>
{{/compose}}
Context & Lo-Dash templates
The helper will also process any valid Lo-Dash templates in the YAML front matter of targeted files, using grunt.config.data
and the context of the "current" file. For example:
---
title: <%= blog.title %>
post: 1
heading: <%= blog.title %> | Blog <%= post %>
---
<h1>{{title}}</h1>
<p class="heading">{{heading}}</p>
Options
cwd
Type: String
(optional)
Default value: ''
The cwd
for paths defined in the helper.
sep
Type: String
Default value: \n
The separator to append after each inlined file.
compare
Type: Function
Default value: function(a, b) {return a.index >= b.index ? 1 : -1;}
Compare function for sorting the aggregated files.
Defining options
"assemble" task options
If you use Grunt and Assemble, you can pass options from the
assemble
task in the Gruntfile to the helper.
In your project's Gruntfile, options for the {{#compose}}...{{/compose}}
helper can be defined in the Assemble task options:
assemble: {
options: {
helpers: ['helper-compose', 'other/helpers/*.js'],
compose: {
cwd: 'test/fixtures/includes',
sep: '<!-- include -->',
compare_fn: function(a, b) {
return a.index >= b.index ? 1 : -1;
}
}
},
files: {}
}
Note that the options are defined in options: {compose: {}}
, which is a custom property in the Assemble options.
Examples
See examples of the {{compose}}
helper being used in the yfm project:
example templates and content
example options and context
all options
assemble: {
options: {
compose: {
cwd: 'test/fixtures/compose',
sep: '<!-- include -->',
compare: function(a, b) {
return a.index >= b.index ? 1 : -1;
}
}
}
}
cwd option
Instead of doing this:
{{compose 'path/to/my/blog/posts/*.hbs'}}
<h1>{{post.title}}</h1>
...
{{/compose}}
You could define the cwd
in the compose
options in your project's Gruntfile:
assemble: {
options: {
helpers: ['helper-compose'],
compose: {
cwd: 'path/to/my/blog'
}
}
}
and then define paths in the templates like this:
{{compose 'posts/*.hbs'}}
<h1>{{post.title}}</h1>
...
{{/compose}}
Usage example
Given you have this config in your project's gruntfile:
// Project configuration.
grunt.initConfig({
// Metadata for our blog.
blog: require('./test/fixtures/blog/blog.yml'),
assemble: {
options: {
helpers: ['helper-compose'],
compose: {
cwd: 'blog',
sep: '<!-- post -->'
}
},
blog: {
src: ['index.hbs'],
dest: 'blog/'
}
}
});
Our index.hbs
file contains the following:
<!-- post -->
{{#compose 'posts/*.hbs' sep="<!-- post -->"}}
<h1>{{blog.title}}</h1>
<h2>Post title: {{title}}</h2>
<p>{{{content}}}</p>
<a href="{{relative link}}">{{text}}</a>
{{/compose}}
And the files we want to compose include these Lo-Dash and Handlebars templates:
---
title: Monday
---
This is the {{title}} post...
The result, blog/index.html
would contain something like:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>My Brilliant Blog</title>
</head>
<body>
<!-- post -->
<h1>My Brilliant Blog</h1>
<h2>Post title: Monday</h2>
<p>This is the Monday post...</p>
<!-- post -->
<h1>My Brilliant Blog</h1>
<h2>Post title: Tuesday</h2>
<p>This is the Tuesday post...</p>
<!-- post -->
<h1>My Brilliant Blog</h1>
<h2>Post title: Wednesday</h2>
<p>This is the Wednesday post...</p>
</body>
</html>
Author
Jon Schlinkert
License and Copyright
Licensed under the MIT License. Copyright (c) Jon Schlinkert, contributors.