hotplates

Compiles and stores handlebars templates and registers partials for faster view resolution.

npm install hotplates
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hotplates Build Status

Registers partials, compiles handlebars templates and shoves them into the oven so you can serve them hot later.

As an added convenience they are namespaced according to the 'templates' folder structure for easy access.

Examples

Assuming your handlebars templates folder looks as follows:

templates
├── index.hbs
└── partials
    ├── oven
    │   ├── filter
    │   │   ├── collector hbs
    │   │   └── handle hbs
    │   └── parts-index hbs
    └── site
        ├── content hbs
        └── header hbs

1. Heat your templates and pass continuation function:

hotplates.heat(
    { templates:
      { root: path.join(__dirname, 'templates')
      , directoryFilter: '!partials' 
      }
    , partials:
      { root: path.join(__dirname, 'templates', 'partials') }
    }
  , renderSite);

This compiles index.hbs, makes it accessible via handlebars.templates['index'] and registers the following partials with handlebars:

'site.content'
'site.header'
'oven.parts-index'
'oven.filter.collector' 'oven.filter.handle'

They are now accessible under that name in other templates and partials.

2. In the continuation function start your server, etc. (in this example we'll open index page in the browser instead):

function renderSite(err) {
  // Prepare a normal handlebars context
  var ctx = 
    { site: 
      { title: 'Willie Slater\'s HotPlater'
      , header: 
        { title: 'Willie Slater makes your HotPlater'
        , subtitle: 'Instructions on how to maintain your hotplates oven' 
        }
      }
    , oven:
        { filter:
          { handle: { how: 'very carefully' }
          }
        , top:
          { burners: { degrees: 250 } 
          , dials:   { maxDegress: 500 }
          }
        }
    };

  // Render the index page using the context
  var rendered = hotplates.oven.index(ctx);
  fs.writeFileSync('./index.html', rendered);

  exec('open ' + './index.html');
}

Full example here.

Installation

npm install hotplates

API

Heating templates

heat(opts, hot)

Heats your templates according to the given opts and calls back when they are hot.

At that point compiled templates are available in the oven and partials where registered with handlebars.

Typical opts:

{ templates:
  { root: path.join(__dirname, 'templates') // tell hotplates where your templates are
  , directoryFilter: '!partials'            // don't compile partials
  }
, partials:
  { root: path.join(__dirname, 'templates', 'partials') } // register all my partials
, watch: true // autmatically re-compile and re-register my templates when I change them or add new ones
}

watch

When set to true, hotplates will watch the templates and partial folders for changes and recompile templates, re-register partials when they change and add new ones that are created

Additional options can be given to templates and partials, most commonly you could change the fileFilter which defaults to ['*.hbs', '*.handlebars'].

Since hotplates resolves templates and partials using readdirp, refer to its options documentation.

The templates

handlebars.templates

After you heated your templates, they are registered as handlebars.templates namespaced according to the path they where found in.

E.g., a template found at 'site/reader/book.hbs' will be stored as a compiled Function under handlebars.templates['oven.site.reader.book'].

Registered Partials

Partials are registered in a similar fashion as handlebars.partials.

Assuming the partial root was 'templates/partials', a partial found at 'templates/partials/book/page.hbs' will be accessible in other templates and partials under the name book.page.

Additionally you can access this partial directly via handlebars.partials['book.page'].

Burning templates

burn()

In order to remove all templates from handlebars and unregister all partials, you can burn them.

This is useful in cases where you want to make sure that no obsolete templates or partials are sticking around.

Events

on('templateCompiled', function (fileInfo, name) { }) and on('partialRegistered', function (fileInfo, name) { })

fileInfo: supplied by readdirp and thus has the same structure as explained in the readdirp documentation. name: the full name under which the template was added to the oven or registered

These events are emitted when a template was [re]compiled or a partial [re]registered respectively.

This feature can be very useful for logging, etc.,

Example:

from examples/server.js

hotplates
  .on('templateCompiled', function (fileInfo, name) { 
    console.log('Compiled: \t[ %s ] as [ %s ]', fileInfo.path, name); 
  })
  .on('partialRegistered', function (fileInfo, name) { 
    console.log('Registered:\t[ %s ] as [ %s ]', fileInfo.path, name); 
  })
  .heat({ ... }, serveSite );

Tests

Reading the tests will make you more familiar with hotplates' api.

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