jinja 0.5.0-dev.25

Jinja2 template engine for Dart. Variables, expressions, control structures and template inheritance.

jinja

Jinja (3.x) server-side template engine port for Dart 2. Variables, expressions, control structures and template inheritance.

Version 0.4.0 introduces breaking changes

See CHANGELOG.md.

Documentation

It is mostly similar to Jinja templates documentation, differences provided below. work in progress.

Differences with Python version

• BigInt and complex numbers are not supported.
• The default filter compares values with null; there is no boolean parameter.
• The defined and undefined tests compare values with null.
• The map filter also compares values with null. Use attribute for object.attribute and item for object[item] expressions.
• Not yet supported:
  • Slices and negative indexes
  • Conditional and variable extends statement variants
  • Choice, ignore missing and variable include statement variants
• If Environment({getAttribute}) is not passed, the getItem method will be used. This allows you to use {{ map.key }} as an expression equivalent to {{ map['key'] }}.
• work in progress

Dynamically invoked members

• [], +, -, *, /, ~/, % operators
• object.length getter
• object.call getter
• Function.apply(function, ...)

Example

import 'package:jinja/jinja.dart';

// ...

var environment = Environment(blockStart: '...', blockEnd: '...');
var template = environment.fromString('...source...');
print(template.render({'key': value}));
// or write directly to StringSink (IOSink, HttpResponse, ...)
template.renderTo(stringSink, {'key': value});

See also examples with conduit and reflectable.

Status:

TODO:

• Environment
  • constructor
    • extensions
    • selectAutoescape
  • addExtension
  • compileExpression
  • policies
• Template:
  • generate
  • stream
  • await support
• HTML Escaping
  • Automatic
• List of Control Structures
  • Macros 🔥
  • Call 🔥
  • Import
• Loaders
  • PackageLoader (VM)
  • ...
• Extensions
  • i18n
  • Expression Statement
  • Loop Controls
  • Debug Statement
• Template compiler (builder)
• ...

Done:

• Variables
• Filters
• Tests
• Comments
• Whitespace Control
• Escaping
• Line Statements
  • Comments
  • Blocks
• Template Inheritance
  • Base Template
  • Child Template
  • Super Blocks
  • Nesting extends
  • Named Block End-Tags
  • Block Nesting and Scope
• HTML Escaping
  • Manual
• List of Control Structures
  • For
  • If
  • Filters
  • Assignments
  • Block Assignments
  • Extends
  • Blocks
  • Include
• Import Context Behavior
  • Include
• Expressions with filters (not all) and tests
• List of Global Functions
  • list
  • namespace
  • print
  • range
• Loaders
  • FileSystemLoader
  • MapLoader (DictLoader)
• Extensions
  • Do Statement
  • With Statement
• Autoescape Overrides

Support

Post issues and feature requests on the GitHub issue tracker.