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TemplateTag to call a method / function WITH arguments

**Callmethod** - TemplateTag to call a method on an object with arguments from within a template {% callmethod hotel.room_price_for_night night_date="2018-01-02" room_type=room_type_context_var %} ## equals ## >>> hotel.room_price_for_night(night_date="2018-01-02", room_type="standard") #Assuming "standard" is the value of room_type_context_var Django doesn't allow calling a method with arguments in the template to ensure good separation of design and code logic. However, sometimes you will be in situations where it is more maintainable to pass an argument to a method in the template than build an iterable (with the values already resolved) in a view. Furthermore, Django doesn't strictly follow its own ideology: the {% url "url:scheme" arg, kwarg=var %} templatetag readily accepts variables as parameters!! This template tag allows you to call a method on an object, with the specified arguments. Usage: {% callmethod object_var.method_name "arg1_is_a_string" arg2_is_a_var kwarg1="a string" kwarg2=another_contect_variable %} e.g. {% callmethod hotel.room_price_for_night date="2018-01-02" room_type="standard" %} {% callmethod hotel.get_booking_tsandcs "standard" %} NB: If for whatever reason you've ended up with a template context variable with the same name as the method you want to call on your object, you will need to force the template tag to regard that method as a string by putting it in quotes: {# Ensure we call hotel.room_price_for_night() even though there's a template var called {{ room_price_for_night }}! #} {% callmethod hotel."room_price_for_night" date="2018-01-02" room_type="standard" %} * **@author:** Dr Michael J T Brooks * **@version:** 2018-01-05 * **@copyright:** Onley Group 2018 (Onley Technical Consulting Ltd) [http://www.onleygroup.com](http://www.onleygroup.com) * **@license:** MIT (use as you wish, AS IS, no warranty on performance, no liability for losses, please retain the notice) * **@write_code_GET_PAID:** Want to work from home as a Django developer? Earn £30-£50 per hour ($40-$70) depending on experience for helping Onley Group develop its clients' Django-based web apps. E-mail your CV and some sample portfolio code to: [email protected] Copyright 2018 Onley Group Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice, credits, and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

  • template
  • tag
  • templatetag
  • function
  • template-tag
  • args
  • kwargs
  • methods
  • argument
  • template-arguments
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Tag that parses dict like format and convert to classes like AngularJS

This tag is inspired by how ng-class works in AngularJS. https://docs.angularjs.org/api/ng/directive/ngClass **example:** `context = { 'context_var': True, 'context_var_2': 'a' }` `{% classes "class_name_1": context_var == True, "class_name_2": context_var_2 == "a", "class_name_3": False %}` output: **class_name_1 class_name_2**

  • tag
  • dict
  • ng-class
  • classes
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Greek uppercase tag for django

Tag to correctly uppercase Greek characters with accent, copy the code in your templatetags folder in a file of your choice, load it in your templates {% load yourfile %} and use it as {% string|gruppercase %} the code works also with other languages, it won't modify anything (eg {% ukwork|gruppercase %} as it transforms only Greek characters (unless your language contains Greek characters).

  • tag
  • django
  • templates
  • uppercase
  • greek
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ContentType template filter

Custom template filter to retrieve a content type of a given model instance. Useful for ModelForms which want to set the content_type field (i.e: GenericForeignKey). ### A usage example: {% load helpers %} {% with instance|content_type as ctype %} <input type="hidden" name="content_type" value="{{ ctype.pk }}"> {% endwith %} Original idea from [this stackoverflow answer] [1] [1]: http://stackoverflow.com/a/12807458/484127

  • template
  • filter
  • tag
  • contenttypes
  • contenttype
  • GenericForeignKey
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Inherit the standard url tag to include domain name

This module extends the standard `url' template tag in Django and adds support for fully qualified domain name URLs. It also can be extended with simple URL load balancing techniques if desired. See my blog for the background story: <http://atodorov.org/blog/2013/12/22/django-template-tag-inheritance-howto/>

  • template
  • tag
  • templatetag
  • url
  • inheritance
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Upgrade django url tags

In Django 1.5 url tags require you to pass in the name of the url as a string. So where you used to be able to do this {% url home_page %} you now have to do this {% url 'home_page' %} Upgrading an old project can be a pain, so here is a snippet for a py file that will update all your url tags. Just put it in a py file in your root directory and execute it. The error you get otherwise is: 'url' requires a non-empty first argument. The syntax changed in Django 1.5, see the docs.

  • tag
  • url
  • upgrade
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Template {% macro %} support, with context rendering

Reuse blocks of template code and content as macros. This is a small extension of https://gist.github.com/skyl/1715202 (which was based on http://djangosnippets.org/snippets/363/) to support rendering macro output into context variables. See comments for details.

  • template
  • tag
  • macro
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Filter by taggit tags in the admin (Django 1.4)

A *SimpleListFilter* derived class that can be used to filter by taggit tags in the admin. To use, simply add this class to the *list_filter* attribute of your ModelAdmin class. Ex.: class ItemAdmin(admin.ModelAdmin): list_display = ('name', 'unit', 'amount') list_filter = ('unit', TaggitListFilter) Based in [ModelAdmin.list_filter documentation](https://docs.djangoproject.com/en/dev/ref/contrib/admin/#django.contrib.admin.ModelAdmin.list_filter).

  • filter
  • tag
  • admin
  • tags
  • tagging
  • taggit
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txt2img tag to show on the web text as images

txt2img tag shows on the web text as images, helping to avoid get indexed email address and some other information you don't want to be on search engines. Usage: `{{worker.email|txt2img:18|safe}}`

  • tag
  • text
  • image
  • templatetag
  • hide
  • convert
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Decode HTML Template Tag

This is useful if you have a string that is html encoded (i.e. "&lt;p&gt;Hello world!&lt;/p&gt;") and you want to do something more complex than just display it as html, such as using the striptags filter.

  • template
  • tag
  • django
  • templatetag
  • html
  • decode
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119 snippets posted so far.