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https://github.com/agoragames/stache
mustache and handlebars template handling in Rails 3.x and Rails 4.x
https://github.com/agoragames/stache
Last synced: 6 days ago
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mustache and handlebars template handling in Rails 3.x and Rails 4.x
- Host: GitHub
- URL: https://github.com/agoragames/stache
- Owner: agoragames
- License: mit
- Created: 2011-08-15T03:32:59.000Z (about 13 years ago)
- Default Branch: main
- Last Pushed: 2021-03-11T16:13:27.000Z (over 3 years ago)
- Last Synced: 2024-05-12T20:48:20.855Z (6 months ago)
- Language: Ruby
- Homepage: https://rubygems.org/gems/stache
- Size: 217 KB
- Stars: 166
- Watchers: 33
- Forks: 49
- Open Issues: 13
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- License: LICENSE
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README
# stache
A Rails 3.x, Rails 4.x, and Rails 5.x compatible Mustache/Handlebars template handler, with support for partials and a couple extra niceties to make sharing the raw templates with client-side javascript a little easier. It's a one-stop shop for your facial-hair-inspired templates.
[](http://travis-ci.org/agoragames/stache)
## Mustache template caching is in 1.1+
I'm investigating whether or not this is something that can be/needs to be ported to handlebars.
## Rails 4, Rails 5 Support is in 1.0.3+
If you want Rails 4 or Rails 5 support, you'll have to use 1.0.3.
## Installation
gem "mustache" # or "handlebars"
gem "stache"
Install the gem. If you want to override any of the configuration options (see `stache/config`), toss an initializer in `config/initializers` and:
```ruby
Stache.configure do |c|
# This is probably the one you'll want to change
# it defaults to app/templates
c.template_base_path = "..."
# This lets you indicate the name of a module that
# namespaces all your view classes, useful, if you
# have a naming conflict, such as with a mailer
c.wrapper_module_name = "..."
# N.B. YOU MUST TELL STACHE WHICH TO USE:
c.use :mustache
# and / or
c.use :handlebars
# Set it to true if template path should be included in
# script's id tag as a underscored prefix. It can be
# overwritten by an id param in `#template_include_tag`.
c.include_path_in_id = false
# Caching (new in 1.1.0, Mustache-only for now)
# Any ActiveSupport::Cache should work fine.
# If you enable this in development, you will lose automagical template reloading!
c.template_cache = ActiveSupport::Cache::MemoryStore.new if Rails.env.production?
end
# or if the block style ain't yer thang, just:
Stache.template_base_path = File.join(Rails.root, "app", "şablon")
Stache.template_cache = ActiveSupport::Cache::MemoryStore.new if Rails.env.production?
```
## Helper methods
There is currently just one helper method; `template_include_tag`. If you pass it the name of a partial it will write out the contents of the partial in a `script` tag, so that you can access it from within your JavaScript.
```erb
<%= template_include_tag 'profiles/profile' %>
```
Specify the template to include with a path *relative to your template base path* (i.e. `profiles/profile` rather than just `profile`).
## A View Class of your Very Own
To facilitate easy integration, 'Stache comes packaged with a fully-functioning subclass of Mustache, called `Stache::Mustache::View`. It will try to find a more appropriate view class to provide to the template renderer based on the template name, but if one cannot be found it will automatically give ya a `Stache::Mustache::View` so you can have *something*.
Needless to say, it's probably better if your custom View objects are subclasses of `Stache::Mustache::View`. That way we can all be sure that the handler will render correctly.
An example by way of explanation:
With a template `app/templates/profiles/index`, Stache will look for a view named `Profiles::Index`, and, if not found, will just use the base `Stache::Mustache::View`. Stache adds `app/views` to Rails' autoload paths, so here's a sample directory structure and some sample files:
```
app/
templates/
profiles/
index.html.mustache
views/
profiles/
index.rb
```
```ruby
# in profiles/index.rb
module Profiles
class Index < ::Stache::Mustache::View
def my_view_helper_method
"whoo"
end
end
end
```
```html
Here's a helper_method call: {{ my_view_helper_method }}
```
With the wrapper_module_name configuration set to "Wrapper":
With a template `app/templates/profiles/index`, Stache will look for a view named `Wrapper::Profiles::Index`, and, if not found, will just use the base `Stache::Mustache::View`.
### Handlebars?
Handlebars will have full access to your rails view helpers.
```
I'm a handlebars template. Look at me call a helper: {{{image_path my_image}}}
```
You can subclass `Stache::Handlebars::View` in the same way as mustache above, but there isn't as much point in doing so.
## View Specs
Yes, you can write view specs using RSpec for your Stache templates! You can use RSpec's `assign` method to
assign values to view instance variables, which will then be be available to the Stache view, either as
instance variables, or via an accessor. Any instance variables defined in the RSpec example will also be
similarly available, so
```ruby
it "should display my instance variable" do
assign(:resource, "Foo")
render
...
end
```
and
```ruby
it "should display my instance variable" do
@resource = "Foo"
render
...
end
```
both make `@resource` available to the Stache view.
## Non-Mustache Partials
Yes, you can include non-Mustache partials (and templates) in your Stache templates. However, the
`{{>partial_name_here}}` syntax in the template won't find a non-Mustache template. You can define
a method in the view and reference it in the template. The view method should use `@view.render` to
render the non-Mustache partial and return its content. Example:
Mustache template:
```
{{{my_haml_sidebar}}}
```
View:
```ruby
class MyPage < ::Stache::Mustache::View
def my_haml_sidebar
@view.render partial: 'somewhere/some_haml_partial_name'
end
end
```
## Stache + ActionMailer
Stache should work just fine with `ActionMailer`, with one minor configuration:
Assuming you have a view directory like this:
```
views/
user_mailer/
confirm_sign_up.html.mustache
confirm_sign_up.rb
confirm_sign_up.text.mustache
```
You'd define your `UserMailer` like so:
```ruby
class UserMailer < ActionMailer::Base
default from: '[email protected]'
def confirm_sign_up
mail(to: '[email protected]', subject: 'Welcome to StacheMail') do |format|
format.text
format.html
end
end
end
```
**N.B.** the `do |format|` block is very important: `ActionMailer` will render the code in the `.rb` file as a multipart text/html component, which is probably not what you want unless you really want to show off your View class to all your recipients :).
The `confirm_sign_up.rb` file contains an utterly normal `::Stache::Mustache::View` subclass, e.g. Note that it is nested inside the `UserMailer` class.
```ruby
class UserMailer
class ConfirmSignUp < ::Stache::Mustache::View
def full_name
["Bob", "Jones"].join(' ')
end
end
end
```
## Of Note
This is code that was ripped out of a research project. It probably has some rough edges.
## Thanks to
This project builds on work done by the following people and projects:
* olivernn's [Poirot](https://github.com/olivernn/poirot)
* goodmike's [mustache_rails3](https://github.com/goodmike/mustache_rails3)
* nex3's [HAML](https://github.com/nex3/haml)
* cowboyd's [handlebars.rb](https://github.com/cowboyd/handlebars.rb)
So: thanks a ton to those guys.
## Contributors
* [afeld](https://github.com/afeld) provided 1.8.7 compatibility fixes.
* [subwindow](https://github.com/subwindow) provided some much needed love for Stache::Mustache::View exception handling.
* [solotimes](https://github.com/solotimes) provided better support for non-standard encodings.
* [ajacksified](https://github.com/ajacksified) cleaned up template extension handling.
* [ayamomiji](https://github.com/ayamomiji) extended the `#template_include_tag` to pass through the full range of `#content_tag` options.
* [awestendorf](https://github.com/awestendorf) requested that `View#partial` not be so particular about leading underscores. Though I didn't use his code, his prompt lead me to investigate how to properly use Rails' internal template lookup code.
* [zombor](https://github.com/zombor) contributed an overhaul to the Mustache renderer that puts Mustache classes themselves in control of the render chain, not Rails.
* [kategengler](https://github.com/kategengler) contributed a patch to allow folks to specify a namespace for their view objects.
* [joker1007](https://github.com/joker1007) contributed a patch making the autoload paths setup more broadly compatible.
* [kianw](https://github.com/kianw) contributed a patch making RSpec a little easier to use.
* [MarkusHarmsen](https://github.com/MarkusHarmsen) added Mustache caching, leading to HUGE performance increases. Thanks!
* [kimili](https://github.com/kimili) added Rails 5.x compatibility as well as some generators and configuration options.
Thanks a ton to all of the contributors, equally. This would never have grown beyond a mediocre tool that rendered partials without their help!
## Note on Patches/Pull Requests
* Fork the project.
* Make your feature addition or bug fix.
* Add tests for it. This is important so I don't break it in a
future version unintentionally.
* Commit, do not mess with rakefile, version, or history.
(if you want to have your own version, that is fine but bump version in a commit by itself I can ignore when I pull)
* Send me a pull request. Bonus points for topic branches.
## Copyright
Copyright (c) 2011-2017 Matt Wilson / Agora Games. See LICENSE for details.