CHANGELOG.md

Stencil Changelog

0.8.0

Breaking

• It is no longer possible to create Context objects. Instead, you can pass a dictionary directly to a Templates render method.

  - try template.render(Context(dictionary: ["name": "Kyle"]))
  + try template.render(["name": "Kyle"])

• Template loader are no longer passed into a Context, instead you will need to pass the Loader to an Environment and create a template from the Environment.

  let loader = FileSystemLoader(paths: ["templates/"])
  
  - let template = loader.loadTemplate(name: "index.html")
  - try template.render(Context(dictionary: ["loader": loader]))
  + let environment = Environment(loader: loader)
  + try environment.renderTemplate(name: "index.html")

• Loaders will now throw a TemplateDoesNotExist error when a template is not found.

• Namespace has been removed and replaced by extensions. You can create an extension including any custom template tags and filters. A collection of extensions can be passed to an Environment.

Enhancements

• Environment is a new way to load templates. You can configure an environment with custom template filters, tags and loaders and then create a template from an environment.

  Environment also provides a convenience method to render a template directly.

• FileSystemLoader will now ensure that template paths are within the base path. Any template names that try to escape the base path will raise a SuspiciousFileOperation error.

• New {% filter %} tag allowing you to perform a filter across the contents of a block.

  {% filter lowercase %}
    This Text Will Be Lowercased.
  {% endfilter %}

• You can now use {{ block.super }} to render a super block from another {% block %}.

• Environment allows you to provide a custom Template subclass, allowing new template to use a specific subclass.

• If expressions may now contain filters on variables. For example {% if name|uppercase == "TEST" %} is now supported.

Deprecations

• Template initialisers have been deprecated in favour of using a template loader such as FileSystemLoader inside an Environment.

• The use of whitespace inside variable filter expression is now deprecated.

  - {{ name | uppercase }}
  + {{ name|uppercase }}

Bug Fixes

• Restores compatibility with ARM based platforms such as iOS. Stencil 0.7 introduced compilation errors due to using the Float80 type which is not available.

0.7.1

Bug Fixes

• Fixes an issue where using {% if %} statements which use operators would throw a syntax error.

0.7.0

Breaking

• TemplateLoader has been renamed to FileSystemLoader. The loadTemplate(s) methods are now throwing and now take labels for the name and names arguments.

• Many internal classes are no longer public. Some APIs were previously accessible due to earlier versions of Swift requiring the types to be public to be able to test. Now we have access to @testable these can correctly be private.

• {% ifnot %} tag is now deprecated, please use {% if not %} instead.

Enhancements

• Variable lookup now supports introspection of Swift types. You can now lookup values of Swift structures and classes inside a Context.

• If tags can now use prefix and infix operators such as not, and, or, ==, !=, >, >=, < and <=.

  {% if one or two and not three %}

• You may now register custom template filters which make use of arguments.

• There is now a default filter.

  Hello {{ name|default:"World" }}

• There is now a join filter.

  {{ value|join:", " }}

• {% for %} tag now supports filters.

  {% for user in non_admins|default:admins %}
    {{ user }}
  {% endfor %}

Bug Fixes

• Variables ({{ variable.5 }}) that reference an array index at an unknown index will now resolve to nil instead of causing a crash. #72

• Templates can now extend templates that extend other templates. #60

• If comparisons will now treat 0 and below numbers as negative.

0.6.0

Enhancements

• Adds support for Swift 3.0.