Strengthen your foundations with the Python Programming Foundation Course and learn the basics. Next Python String. Recommended Articles. Article Contributed By :. Easy Normal Medium Hard Expert. Writing code in comment? Please use ide. Load Comments. What's New. Similar to truncatewords , except that it is aware of HTML tags. Any tags that are opened in the string and not closed before the truncation point, are closed immediately after the truncation.
This is less efficient than truncatewords , so should only be used when it is being passed HTML text. The list is assumed to be in the proper format.
An empty string can be provided when all characters should be escaped. It also supports domain-only links ending in one of the original top level domains. For example, djangoproject. Links can have trailing punctuation periods, commas, close-parens and leading punctuation opening parens , and urlize will still do the right thing. If value is "Check out www. In addition to web links, urlize also converts email addresses into mailto: links.
If value is "Send questions to foo example. The urlize filter also takes an optional parameter autoescape. The default value for autoescape is True. Apply this filter only to plain text. Converts URLs and email addresses into clickable links just like urlize , but truncates URLs longer than the given character limit. As with urlize , this filter should only be applied to plain text.
If value is "Joel is a slug" , the output will be 4. If value is Joel is a slug , the output would be:. Django provides template tags and filters to control each aspect of internationalization in templates. They allow for granular control of translations, formatting, and time zone conversions. This library allows specifying translatable text in templates. See Internationalization: in template code. This library provides control over the localization of values in templates.
See Controlling localization in templates. This library provides control over time zone conversions in templates.
See Time zone aware output in templates. See django. If the django. It is also able to consume standard context variables, e.
See Jinja2 for information on using the static tag with Jinja2. Offline Django 4. Django is a registered trademark of the Django Software Foundation. Django The web framework for perfectionists with deadlines.
Documentation Search: Search. Getting Help el es fr id it ja ko pl pt-br zh-hans Language: en 1. If the variable evaluates to a string, Django will use that string as the name of the parent template. If the variable evaluates to a Template object, Django will use that object as the parent template.
Note The escape and safe filters are not acceptable arguments. Tests if two values are the same object. This is useful for providing sample data in templates. This includes tab characters and newlines. Warning Strings that can be coerced to integers will be summed , not concatenated, as in the first example above.
Useful for escaping strings in CSV, for example. Note These format characters are not used in Django outside of templates. Changed in Django 2. For example: value Template Output For example, when the active locale is en English : value Template Output For example, when the active locale is pl Polish : value Template Output Changed in Django 3. Changed in Django 4. This works for both strings and lists. This will happily convert any string.
Note Use blocktranslate to pluralize translated strings. Note If you are chaining filters, a filter applied after safe can make the contents unsafe again. Joel is a slug. Using Jinja2 templates? The Django template language. The Django template language: for Python programmers. Support Django! Donate today! Either w for words, p for HTML paragraphs or b for plain-text paragraph blocks default is b.
True or False. See Y for the more common year format. Proprietary extension. Timezone name. Could be in any format, or might return an empty string, depending on the datetime. Time zone offset in seconds. ISO format. RFC formatted date. Collectives on Stack Overflow. Learn more. Dynamic template tags in django Ask Question. Asked 22 days ago. Active 21 days ago.
Viewed 43 times. Improve this question. Mdp11 Mdp11 4 4 silver badges 12 12 bronze badges. Does this answer your question? How to pass selected, named arguments to Jinja2's include context? In this case, you can let Django take care of all the auto-escaping handling for you. For example, suppose you have a filter that adds the string xx to the end of any input. Be careful when deciding if your filter really does leave safe strings as safe.
Alternatively, your filter code can manually take care of any necessary escaping. To mark the output as a safe string, use django. Be careful, though. You need to do more than just mark the output as safe. You need to ensure it really is safe, and what you do depends on whether auto-escaping is in effect. The idea is to write filters that can operate in templates where auto-escaping is either on or off in order to make things easier for your template authors.
This flag tells Django that your filter function wants to be passed an extra keyword argument, called autoescape , that is True if auto-escaping is in effect and False otherwise. It is recommended to set the default of the autoescape parameter to True , so that if you call the function from Python code it will have escaping enabled by default. We use autoescape to decide whether the input data needs to be passed through django.
Finally, in the above example, we remember to mark the result as safe so that our HTML is inserted directly into the template without further escaping. When this flag is set, if the first argument to your filter is a time zone aware datetime, Django will convert it to the current time zone before passing it to your filter when appropriate, according to rules for time zones conversions in templates.
Tags are more complex than filters, because tags can do anything. Django provides a number of shortcuts that make writing most types of tags easier. Many template tags take a number of arguments — strings or template variables — and return a result after doing some processing based solely on the input arguments and some external information.
This function, which is a method of django. Library , takes a function that accepts any number of arguments, wraps it in a render function and the other necessary bits mentioned above and registers it with the template system.
Note that the first argument must be called context. For example:. Then in the template any number of arguments, separated by spaces, may be passed to the template tag. This is done by using the as argument followed by the variable name. Doing so enables you to output the content yourself where you see fit:. Another common type of template tag is the type that displays some data by rendering another template.
Writing inclusion tags is probably best demonstrated by example. First, define the function that takes the argument and produces a dictionary of data for the result. The important point here is we only need to return a dictionary, not anything more complex. This will be used as a template context for the template fragment. This template is a fixed feature of the tag: the tag writer specifies it, not the template designer.
Following our example, the template is very short:. Following our example, if the above template is in a file called results. Alternatively it is possible to register the inclusion tag using a django.
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