Filter for a list if breadcrumbs. All necessary code included but obviously only the breadcrumbs method that is needed with necessary changes for esc(). I use it as {% load breadcrumbs %} {{ request.path|breadcrumbs:"" }} enclosed in an unordered html list with id="breadcrumbs"
Template filter to hide an email address away from any sort of email harvester type web scrapers and so keep away from spam etc. The filter should be applied on a string which represents an email address. You can optionally give the filter a parameter which will represent the name of the resulting email href link. If no extra parameter is given the email address will be used as the href text. {{ email|mungify:"contact me" }} or {{ email|mungify }} The output is javascript which will write out the email href link in a way so as to not actually show the email address in the source code as plain text. Also posted on [my site](http://www.tomcoote.co.uk/DjangoEmailMunger.aspx).
This patch adds a new admin Filter, for Filtering nullable fields. It adds 3 possible choices: 'All' (no filter), 'Null' (it applies field__isnull=True filter), and 'With Value' (it filters null values). This patch is interesting when you have a Integer or String fields and you want to filter wether a value is set or not. In other case, it would show too many filtering options. Remember this is a patch and you must modify a django file in `django/contrib/admin/filterspecs.py`
Truncates a string after a given length, keeping the last word complete. This filter is more precise than the default `truncatewords` filter. Words length vary too much, 10 words may result in 40 or 70 characters, so cutting by character count makes more sense. There is a [blog post](http://ricobl.wordpress.com/2008/12/23/templates-django-filtro-truncatewords-melhorado/) about this snippet (in Portuguese).
Personally I hate using markdown for text input just so it can be converted into HTML. Markdown languages almost always don't support some thing I want to do; thus, why not just use HTML in the first place. Well because you don't want anybody posting any kind of HTML on your site. Solution, instead of making your users learn markdown, let them enter HTML and filter out bad tags. This is a filter I use to filter HTML for only certain allowed tags. The allowed tags can be configured with the **allowedhtml** list. To make your text input even more user friendly use a Javascript HTML editor like [FCK Editor](http://www.fckeditor.net/) so your users will have a nice GUI editor.
simple usage in tpl {% load jsonify %} <script type="text/javascript"> var object = {{ object|jsonify }}; </script>
This filter can be used to wrap <span class='highlight'> around anything you want to highlight in a block of text. For example, if you had 'foo bar foo baz' inside the context variable MYTEXT, you could do {{ MYTEXT|highlight:'foo' }}, and "<span class='highlight'>foo</span> bar <span class='highlight'>foo</span> baz" would be returned. How you style the highlight class is up to you.
Couldn't get the original to work, and wanted more functionality (scale on x or y coordinates) <img src="{{ object.image.url }}" alt="original image"> <img src="{{ object.image|thumbnail:"250w" }}" alt="image resized to 250w x (calculated/scaled)h "> <img src="{{ object.image|thumbnail:"250h" }}" alt="image resized to (calculated/scaled)w x 250h h "> <img src="{{ object.image|thumbnail:"250x200" }}" alt="image resized to 250wx200h "> <img src="{{ object.image|thumbnail }}" alt="image resized to default 200w (or whatever you default it to) format"> Original http://www.djangosnippets.org/snippets/192/ Adapted http://www.djangosnippets.org/snippets/955/ Sampled From: http://batiste.dosimple.ch/blog/2007-05-13-1/ http://vaig.be/2008/05/17/stdimagefield-improved-image-field-for-django/
Much stolen from base `truncate_html_words`. The difference is that this filter takes a number of characters as its argument and truncates to the nearest word boundary less than that count, rather than specifying a number of words.
Django's templates don't provide much in the way of arithmetic: there is an "add" filter and that is about it. Even if sub, mult and div filters are implemented, it is difficult to chain filters while preserving some complicated expression, such as ((x+3)4-(2-y)/12.75). However, this expression can be converted into Reverse Polish Notation: x 3 + 4 * 2 y - 12.75 / - which is just a sequence of operations (push-value or apply-operator) and can be chained. To use these filters, first create a new stack for the expression with name|stnew (pass it some locally unique value). To push a number (or template variable) onto the stack, call name|stpush:number (note that you have to tell stpush the name of the stack to push onto). To pop, call name|stpop. To perform an operation, call name|st[add,sub,mult,div,mod]:number. All numbers are integers if they look like integers, or floats otherwise (integers are turned into floats upon division if they need to be). All of these functions return the name of the stack so that they can be chained. When the calculation is finished (i.e. the answer is at the bottom of the stack) call name|stget to retrieve it. Example (this was used to calculate an inline CSS value: `left: {{ forloop.counter|stnew|stpush:res.stwkday|stpush:"9.35"|stmult|stpush:res.get_item_left|stpush:"2.75"|stadd|stadd|stget }}em;`
A simple filter which divides an iterable (list, tupe, string, etc) in chunks, which can then be iterated over separately. A sample of the filter usage is given: a gallery template in which I needed to display images in a table, three images per row, one row for images followed by one row for their descriptions.
This snippet is based on [#748](http://www.djangosnippets.org/snippets/748/). Adds filtering by first char (alphabetic style) of values in the admin filter sidebar. The example below results in this filter: By name that starts with All A B G M X urls.py example (only for register the filter): import <your project>.admin.filterspecs models.py example: from django.db import models class Person(models.Model): name = models.CharField(max_length=40) name.alphabetic_filter = True admin.py example: class Admin: list_filter = ['name']
I don't know how robust or secure this is, but it's working for me so far.
This filter converts HTML to nicely-formatted text using the text-browser W3M. I use this for constructing e-mail bodies, since it means I don't have to have two templates, one HTML and one plain-text, for each detailed e-mail I want to send. Besides the obvious maintenance benefits, this is nice because Django's templating system isn't well-suited to plain-text where whitespace and line-breaks are significant. I chose W3M because it renders tables nicely and can take in HTML from STDIN (which Lynx can't do). An alternative is ELinks; to use it, change "cmd" to the following: `elinks -force-html -stdin -dump -no-home`
Derived from [847](http://www.djangosnippets.org/snippets/847/) but allows for checks against multiple groups...