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Tag "filter"

177 snippets

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Return to change_list with filter after change

This snippet allows you to return back to the filtered change_list after clicking "Save" on a change form. Other snippets I've found don't seem to take into account clicking on "Save and add another" or "Save and continue"

  • filter
  • admin
  • change_list
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currency filter without using locale

This snippet is a combination of the existing currency snippets I found and some modifications to use your own settings without the need to have the locale installed on the system. You can define in settings.py: DECIMAL_SEPARATOR = ',' THOUSAND_SEPARATOR = '.' CURRENCY_SYMBOL = u'€' With the above settings, using `{{ 1234.30|currency }}` on a template would result in `€1.234,30`

  • template
  • filter
  • currency
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Currency formatting filter

See the function **docstring** for usage. This template filter has a couple of drawbacks: * Uses **locale.setlocale** which, according to the [Python docs](http://docs.python.org/library/locale.html#locale.setlocale), is not thread safe. I don't know how this may affect Django applications. * Requires Python 2.5+. Updated 2011-03-16.

  • template
  • filter
  • currency
  • formatting
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Yet another list partitioning filter

A simple template filter for breaking a list into sublists of a given length, you might use this on an ecommerce product grid where you want an arbitrary number of rows of fixed columns. Unlike the other partitioning filters I've seen, this doesn't try to distribute the rows evenly, instead it fills each row for moving onto the next. This filter preserves the ordering of the input list.

  • template
  • filter
  • partition
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Truncate HTML without breaking tags

Put it in appname/templatetags/truncatehtml.py and load it with {% load truncatehtml %}, then for instance {{ some_story|truncatehtml:100 }} to truncate the story to 100 characters. Tags are not counted in the length given, and character entities count as one character. The filter should never break an open-tag text close-tag sequence without adding in the close tag. It will also preserve character entities. It won't sanitize the HTML, though: garbage in, garbage out. There's a bit more info about how it works in a [blog post](http://ole-laursen.blogspot.com/2009/05/safe-truncation-of-html.html) I wrote.

  • template
  • filter
  • truncate
  • html
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wordbreak filter

usage: {{ object.content|wordbreak:"10" }} This means if any word is 10 characters or longer, a `­` will be placed every 10 characters. This is to break long words which may break the appearance of a page. The output of this is HTML safe as the content has been conditionally escaped.

  • filter
  • custom-filter
  • wordbreak
  • word-break
  • long-words
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Significant digits filter

Formats float values with specified number of significant digits (defaults to 3). Usage: `{{value|sigdig}} # with 3 significant digits by default` `{{value|sigdig:digits}}` Examples: `{{0.001432143|sigdig}}` renders as `0.00143` `{{874321.4327184|sigdig}}` renders as `874000` `{{874321.4327184|sigdig:5}}` renders as `874320` Useful for scientific or engineering presentation.

  • filter
  • filters
  • math
  • engineering
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Breadcrumbs filter

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"

  • filter
  • breadcrumbs
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truncatehtml_at_word

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.

  • filter
  • html
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AlphabeticFilterSpec

**WARNING: a better version of this snippet you can see at [http://www.djangosnippets.org/snippets/1051/](http://www.djangosnippets.org/snippets/1051/)** This filter spec is util only for who uses newforms-admin branch. To use this, you need to extend the class ModelAdmin for your model class, like the MyClassAdmin class in the code, with attention to the following lines: # Appends the filter cl.filter_specs.insert(0, AlphabeticFilterSpec(cl.lookup_opts.get_field('name'),request,cl.params,self.model,self))

  • filter
  • admin
  • alphabetic
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improved getattr template filter

I tried to use [Joshua's](http://www.djangosnippets.org/users/joshua/) nice and very useful [getattr template filter (#38)](http://www.djangosnippets.org/snippets/38/), but ran into a few problems. I used it on objects outside of my control (admin internals, coughcough) and on some of them the code didn't catch the resulting exceptions. So I improved the error handling a bit. Furthermore, the code now also returns the *value of a callable* instead of the callable *itself* (last 4 lines). Looking at my code though, it can certainly be improved further.

  • template
  • filter
  • get
  • attr
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Wiki-like markup for sub templates

I wanted to have the possibility to use a wiki-like markup style in my flatpages for various purposes (embedding images, quoting, etc.) After a few dead ends I came up with this, which is quite nice I think. > It basically takes a named tag, loads the corresponding template, passes in all arguments, renders the template and replaces the named tag with the result. *The markup looks like this:* > [[example:value to pass|option1=somevalue option2=values can have spaces too! without having to put them in quotes option3=some other value]] *This results in:* * Filter tries to load wiki/wiki_example.html * If it is loaded, it passes an WikiElement containing the value and the options to the template, renders it and replaces the tag with the rendered template *In the "wiki/wiki_example.html" template you can use it like this:* {{param.value}} {{param.opts.option1}} Or loop over param.opts.iteritems.

  • template
  • filter
  • markup
  • wiki
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