I wrote this rather quickly. It allows you to put a template.showell
file in each app folder, and will render the templates on demand if
you call "render_showell_to_response(...)". It'll check the last
modification time of the .showell files, and re-renders them if
they've changed, allowing you to come close to ignoring any running of
the Showell pre-processor on your own.
===
import os, sys
import showell
from django.conf import settings
from django.utils.importlib import import_module
from django.shortcuts import render_to_response
from datetime import datetime
_SHOWELL_FILES_ = []
def render_showell_to_response(template, *args, **kwargs):
'''
Monitor any templates.showell file in an app folder
for changes, and republish them if necessary before
serving up the request
'''
# Get a list of app showell files
# Runs only once
if len(_SHOWELL_FILES_) == 0:
for app in settings.INSTALLED_APPS:
m = import_module(app)
for path in m.__path__:
sfile = os.path.join(path, 'templates.showell')
if os.path.exists(sfile):
_SHOWELL_FILES_.append(sfile)
# Check the date of each showell file
for sfile in _SHOWELL_FILES_:
if not hasattr(settings, '_SHOWELL_LAST_RENDERED_') or \
datetime.fromtimestamp(os.path.getmtime(sfile)) >
settings._SHOWELL_LAST_RENDERED_:
#print 'Republishing %s' % sfile
showell.publish(sfile)
# Set the last time we looked
settings._SHOWELL_LAST_RENDERED_ = datetime.now()
# Render normal template
return render_to_response(template, *args, **kwargs)
On Nov 27, 1:08 pm, Steve Howell <[email protected]> wrote:
> I would like to announce an early version ofShowellMarkup. It
> allows you or your designer to create web pages without the visual
> clutter of </table>, </ol>, {% endfor %}, {% endwith %}, and friends.
>
> Unlike templating solutions that compete with Django, theShowell
> Markup plays nice with Django and still delegates all the heavy
> lifting to Django, so you still get variable interpolation, extends,
> custom filter tags, include, etc. from Django.
>
> ShowellMarkup just does two jobs and does them well:
>
> 1. Allow for indentation-based blocking (both for HTML and Django
> tags)
> 2. Allow for clean HTML one-liners that truly separate markup from
> content.
>
> The implementation ofShowellMarkup is just a preprocessor to publish
> Django templates. You edit theShowellMarkup from a master file and
> then publish the templates to their locations within the Django
> directory structure and you're done. You can keep both markups under
> source control. The preprocessor writes clean markup, so you can
> debug at the Django level as needed. Also, you are not forced to
> useShowellidioms everywhere; normal Django and HTML still passes through
> the preprocessor without modification.
>
> You can find the implementation here:
>
> http://www.djangosnippets.org/snippets/1819/
>
> The indentation feature is, of course, inspired by Python/YAML/HAML/
> etc.
>
> The one-liner syntax is inspired by Django's use of pipes to implement
> filters.
>
> Here are some examples (some of which look better in a monospace
> font)...
>
> You can use indentation syntax for HTML tags like table.
>
> Instead of this...
>
> <table>
> <tr>
> <td>
> Right
> </td>
> <td>
> Center
> </td>
> <td>
> Left
> </td>
> </tr>
> </table>
>
> You can write DRY code this...
>
> >> table
> >> tr
> >> td
> Right
> >> td
> Center
> >> td
> Left
>
> Lists work the same way, and note that attributes are not a
> problem.
>
> Instead of this...
>
> <div class="spinnable">
> <ul>
> <li id="item1">
> One
> </li>
> <li id="item2">
> Two
> </li>
> </ul>
> </div>
>
> You can write DRY code this...
>
> >> div class="spinnable"
> >> ul
> >> li id="item1"
> One
> >> li id="item2"
> Two
>
> This tool should play nice with most templating engines, but it
> has
> specific support for Django.
>
> Instead of this...
>
> {% extends 'base.html' %}
> {% load smartif %}
>
> {% block body %}
> {% for book in books %}
> {{ book }}
> {% endfor %}
>
> {% if condition %}
> Display this
> {% elif condition %}
> Display that
> {% else %}
> {% include 'other.html' %}
> {% endif %}
> {% endblock %}
>
> You can write DRY code this...
>
> %% extends 'base.html'
> %% load smartif
>
> %% block body
> %% for book in books
> {{ book }}
>
> %% if condition
> Display this
> %% elif condition
> Display that
> %% else
> %% include 'other.html'
>
> The tool also lets you dry up individual lines of HTML using a
> piping concept. Note the clean separation between markup and
> content.
>
> Instead of this...
>
> <tr class="header_row">
> <th class="first_column">Original Author</th>
> <th>Commenters</th>
> <th>Title</th>
> <th>Action</th>
> <th>Last words</th>
> <th>By</th>
> <th>When</th>
> </tr>
>
> <ol class="boring_list">
> <li>One</li>
> <li>Two</li>
> <li>Three</li>
> <li>{{ element4|join:',' }}</li>
> </ol>
>
> You can write DRY code this...
>
> >> tr class="header_row"
> Original Author | th class="first_column"
> Commenters | th
> Title | th
> Action | th
> Last words | th
> By | th
> When | th
>
> >> ol class="boring_list"
> One | li
> Two | li
> Three | li
> {{ element4|join:',' }} | li
>
> Pipes get applied from right to left, as you would expect.
> You can also throw a br on at the end.
>
> Instead of this...
>
> <span class="greeting"><b>Hello World!</b></span><br />
> <span class="parting_words"><i>Goodbye World!</i></span><br />
> <hr />
> <p class="praise">
> Indentation-based syntax is so
> Pythonic!
> </p>
>
> You can write DRY code this...
>
> Hello World! | b | span class="greeting" ; br
> Goodbye World! | i | span class="parting_words"; br
> ; hr
> >> p class="praise"
> Indentation-based syntax is so
> Pythonic!
>
> There are three special shortcuts for LINK, FORM, and HIDDEN.
> You could easily extend the preprocessor to do more.
>
> Instead of this...
>
> <a href="{% url collection.archive referral.pk %}">Archive</a>
> <a href="{% url home.home %}">Home</a>
> <a href="{% url friendship.friends %}">Friends</a>
> <a href="{% url referrals.create %}">Create a card</a>
> <a href="{% url activity.recent_changes %}">Recent changes</a>
>
> <form action="{% url referrals.create %}" method="POST">
> {{ form.as_p }}
> <input type="hidden" name="referral"
> value="{{ referral.id }}" />
> </form>
>
> You can write DRY code this...
>
> Archive LINK collection.archive referral.pk
> Home LINK home.home
> Friends LINK friendship.friends
> Create a card LINK referrals.create
> Recent changes LINK activity.recent_changes
>
> >> FORM referrals.create
> {{ form.as_p }}
> {{ referral.id } | HIDDEN referral
>
> I am calling the markupShowellMarkup for now, but a better name
> might be in order. "Showell" rhymes with "towel." It is my username,
> and hopefully it "shows well" too.
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