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- -------------------------------------------------------------------------------
- DojoX Django Template Language
- -------------------------------------------------------------------------------
- Version 0.0
- Release date: 09/20/2007
- -------------------------------------------------------------------------------
- Project state: experimental/feature incomplete
- -------------------------------------------------------------------------------
- Project authors
- Neil Roberts (pottedmeat@dojotoolkit.org)
- -------------------------------------------------------------------------------
- Project description
- The Django Template language uses a system of templates that can be compiled
- once and rendered indefinitely afterwards. It uses a simple system of tags
- and filters.
- This aims to be a 1:1 match with the Django Template Language as outlined in
- http://www.djangoproject.com/documentation/templates/. Many common tags and
- filters have been implemented (see below), along with new filters and tags as
- necessary (see below).
- The Django Template Language is intended within Django to only handle text.
- Our implementation is able to handle HTML in addition to text. Actually, the
- text and HTML portions of dojox.dtl are two separate layers, the HTML layer
- sits on top of the text layer (base). It's also been implemented in such a way
- that you have little to fear when moving your code from Django to dojox.dtl.
- Your existing templates should work, and will benefit from the massive
- performance gain of being able to manipulate nodes, rather than having to do
- clunky innerHTML swaps you would have to do with a text-only system. It also
- allows for new HTML-centric abilities, outlined below.
- Despite having two levels of complexity, if you write your tags correctly, they
- will work in both environments.
- -------------------------------------------------------------------------------
- Dependencies
- Base:
- dojox.string.Builder
- Date filters and tags:
- dojox.date.php
- Widget:
- dijit._Widget
- dijit._Container
- -------------------------------------------------------------------------------
- Installation instructions
- Grab the following from the Dojo SVN Repository:
- http://svn.dojotoolkit.org/var/src/dojo/dojox/trunk/dtl.js
- http://svn.dojotoolkit.org/var/src/dojo/dojox/trunk/dtl/*
- Install into the following directory structure:
- /dojox/dtl/
- ...which should be at the same level as your Dojo checkout.
- -------------------------------------------------------------------------------
- What's Been Done
- | Implemented | Tag | Text Unit Test | HTML Unit Test |
- | X | block | X | |
- | X | comment | X | |
- | X | cycle | X | |
- | X | debug | X | |
- | X | extends | X | |
- | X | filter | X | |
- | | firstof | | |
- | X | for | | |
- | X | if | | |
- | | ifchanged | | |
- | | ifequal | | |
- | | ifnotequal | | |
- | | include | | |
- | | load | | |
- | | now | | |
- | | regroup | | |
- | | spaceless | | |
- | | ssi | | |
- | | templatetag | | |
- | | url | | |
- | | widthratio | | |
- | | with | | |
- | Implemented | Filter | Text Unit Test | HTML Unit Test |
- | X | add | X | |
- | X | addslashes | X | |
- | X | capfirst | X | |
- | X | center | X | |
- | X | cut | X | |
- | X | date | X | |
- | X | default | X | |
- | X | default_if_none | X | |
- | X | dictsort | X | |
- | X | dictsort_reversed | X | |
- | X | divisibleby | X | |
- | X | escape | X | |
- | X | filesizeformat | X | |
- | X | first | X | |
- | X | fix_ampersands | X | |
- | X | floatformat | X | |
- | X | get_digit | X | |
- | X | iriencode | X | |
- | X | join | X | |
- | X | length | X | |
- | X | length_is | X | |
- | X | linebreaks | X | |
- | X | linebreaksbr | X | |
- | X | linenumbers | X | |
- | X | ljust | X | |
- | X | lower | X | |
- | X | make_list | X | |
- | X | phone2numeric | X | |
- | X | pluralize | X | |
- | X | pprint | X | |
- | X | random | X | |
- | X | removetags | X | |
- | X | rjust | X | |
- | X | slice | X | |
- | X | slugify | X | |
- | X | stringformat | X | |
- | X | striptags | X | |
- | X | time | X | |
- | X | timesince | X | |
- | X | timeuntil | X | |
- | X | title | X | |
- | X | truncatewords | X | |
- | X | truncatewords_html | X | |
- | X | unordered_list | X | |
- | X | upper | X | |
- | X | urlencode | X | |
- | X | urlize | X | |
- | X | urlizetrunc | X | |
- | X | wordcount | X | |
- | X | wordwrap | X | |
- | X | yesno | X | |
- -------------------------------------------------------------------------------
- HTML-Specific Additions
- -------------------------------------------------------------------------------
- {%extends "shared:templates/template.html" %}
- When using the {% extends %} tag, we don't always want to replace the parent
- node in DOM. For example, if we have a list view and a detail view, but both
- share the same base template, we want it to share the parent template. This
- basically means that the same nodes will be used in the parent for both views.
- To use this, simply add "shared:" to the beginning of the specified template.
- -------------------------------------------------------------------------------
- <!--{% commented markup %}-->
- Some browsers treat comment nodes as full fledged nodes. If performance is
- important to you, you can wrap your markup in comments. The comments will be
- automatically stripped for browsers that cannot support this.
- -------------------------------------------------------------------------------
- Attribute Tags
- If a tag name begins with "attr:" then it will be able to inject an object
- into the parsed template. (See dojox.dtl.tag.event.EventNode)
- onclick/onmouseover/etc attributes work by attaching to the rendering object.
- tstyle attribute allows for styles to be changed dynamically. Use them just
- like a "style" attribute.
- attach attribute attaches the node to the rendering object.
- -------------------------------------------------------------------------------
- New Context Functions
- setThis() and getThis() returns the object "in charge" of the current rendering.
- This is used so that we can attach events.
- mixin() and filter() clone the current context, and either add to or reduce
- the keys in the context.
- -------------------------------------------------------------------------------
- Buffers
- Both the base and HTML versions of dojox.dtl use buffers. The base version uses
- dojox.string.Builder and the HTML version uses dojox.dtl.HtmlBuffer.
- The HTML buffer has several calls important to rendering:
- setParent/getParent/concat/remove:
- setParent and concat are used in order to render our HTML. As we move through
- the parsed template, different nodes change the parent or add on to the
- current parent. getParent is useful in things like the attribute tags, since
- they can use getParent to find the node that they're an attribute on. remove is
- used during unrendering.
- setAttribute:
- Sets an attribute on the current parent
- -------------------------------------------------------------------------------
- Tags Need clone/unrender Functions.
- One of the biggest challenges of getting dojox.dtl to work in an HTML
- environment was logic blocks. Nodes and objects inside a for loop need to be
- cloned, they can't simply be re-rendered, especially if they involve a Node.
- Also, in the case of an if/else block, we need to be able to not just render
- one of the blocks, but also unrender the second.
- This is really simple code, a good example is the dojox.dtl.HtmlNode
- object. Each function in this object is only one line long.
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