Angel
1.x
1.x
  • Introduction
  • Example Projects
  • Awesome Angel
  • 1.1.0 Migration Guide
  • Social
    • Angel on Gitter
    • Angel on Medium
    • Angel on YouTube
  • The Basics
    • Installation & Setup
      • Without the Boilerplate
    • Requests & Responses
    • Dependency Injection
    • Basic Routing
    • Request Lifecycle
    • Middleware
    • Controllers
    • Handling File Uploads
    • Using Plug-ins
    • Rendering Views
    • REST Client
    • Testing
    • Error Handling
    • Pattern Matching and Parameter
    • Command Line
  • Flutter
    • Writing a Chat App
    • Flutter helper widgets
  • Services
    • Service Basics
    • TypedService
    • In-Memory
    • Custom Services
    • Hooks
      • Bundled Hooks
    • Database-Agnostic Relations
    • Database Adapters
      • MongoDB
      • RethinkDB
      • JSON File-based
  • Plug-ins
    • Authentication
    • Configuration
    • Diagnostics & Logging
    • Reverse Proxy
    • Service Seeder
    • Static Files
    • Validation
    • Websockets
    • Server-sent Events
    • Toggle-able Services
  • Middleware/Finalizers
    • CORS
    • Response Compression
    • Security
    • File Upload Security
    • shelf Integration
    • User Agents
    • Pagination
    • Range, If-Range, Accept-Ranges support
  • PostgreSQL ORM
    • Model Serialization
    • Query Builder + ORM
    • Migrations
  • Deployment
    • Running in Isolates
    • Configuring SSL
    • HTTP/2 Support
    • Ubuntu and nginx
    • AppEngine
    • Production Mode
  • Front-end
    • Mustache Templates
    • Jael template engine
      • Github
      • Basics
      • Custom Elements
      • Strict Resolution
      • Directive: declare
      • Directive: for-each
      • Directive: extend
      • Directive: if
      • Directive: include
      • Directive: switch
    • compiled_mustache-based engine
    • html_builder-based engine
    • Markdown template engine
    • Using Angel with Angular
  • Advanced
    • API Documentation
    • Contribute to Angel
    • Scaling & Load Balancing
    • Standalone Router
    • Writing a Plugin
    • Task Engine
    • Hot Reloading
    • Real-time polling
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  1. Front-end
  2. Jael template engine

Directive: extend

Jael supports template inheritance by means of extend and block.

Note the following example:

<!-- layout.jl -->
<html>
    <head>
        <title>{{ title }} - My App</title>
    </head>
    <body>
        <block name="content"></block>
        <div class="footer">
          <!-- Footer content... -->
        </div>
    </body>
</html>

<!-- hello.jl -->
<extend src="layout.jl">
  <block name="content">
    <img src=user.avatar ?? "http://example.com/img/default-avatar">
    Hello, {{ user.name }}!
  </block>
</extend>

To extend a layout, instead of the file containing an <html> node, create a file with an <extend> node. The src attribute should point to the correct file. Then, add <block> tags that will replace the corresponding <block> tags declared in the parent file.

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Last updated 6 years ago