DropDownMultiple widget

Observation: depends on jQuery to works! This widget works like other multiple select widgets, but it shows a drop down field for each choice user does, and aways let a blank choice at the end where the user can choose a new, etc. Example using it: class MyForm(forms.ModelForm): categories = forms.Field(widget=DropDownMultiple) def __init__(self, *args, **kwargs): self.base_fields['categories'].widget.choices = Category.objects.values_list('id', 'name') super(MyForm, self).__init__(*args, **kwargs)

• newforms
• multiple
• forms
• jquery
• select
• widget

Tue 24 Apr 2018 Read More

User post_save signal to auto create 'admin' profile

**How to use:** 1. puts this code at the end of the `models.py` file who haves the User Profile class declared; 2. verify if your User Profile class has the name 'UserProfile'. If not, change the code to the right name. **About:** this snippet makes the ORM create a profile each time an user is created (or updated, if the user profile lost), including 'admin' user.

• admin
• user
• userprofile

Tue 02 Sep 2014 Read More

CountryField

**How to use** put this code somewhere you want, import CountryField and use

• field
• country
• countries

Sat 14 Jul 2012 Read More

RangeField and RangeWidget

These field and widget are util for to those fields where you can put a star and end values. It supports most of field types and widgets (tested with IntegerField, CharField and DateField / TextInput and a customized DateInput). **Example of use:** class FormSearch(forms.Form): q = forms.CharField(max_length=50, label=_('Search for')) price_range = RangeField(forms.IntegerField, required=False) **Example of use (with forced widget):** class FormSearch(forms.Form): q = forms.CharField(max_length=50, label=_('Search for')) price_range = RangeField(forms.IntegerField, widget=MyWidget)

• forms
• field
• widget
• range

Tue 24 Aug 2021 Read More

Adding buttons to submit line in a Admin page

**Attention: this snippet depends on jQuery library to works** The Admin templates hierarchy does not allow you change the submit line (that buttons bar in the footer of the change view of a model class). This code shows how to resolve this, using a simple javascript trick. You can read the code and implement using your favorite javascript library (instead of jQuery) or pure JavaScript. This example regards to User Profile, a common used model class that adds custom fields to a user in the authentication system. To use this, you must put this template code in a file with the following name: templates/admin/auth/user/change_form.html

• template
• ajax
• javascript
• admin
• query

Tue 15 Feb 2011 Read More

Little middleware that create a facebook user

**How to use**: 1. Install [**PyFacebook** package](http://wiki.developers.facebook.com/index.php/PythonPyFacebookTutorial). 2. After make all steps in tutorial above, put this code in your app's models.py module (you maybe prefer split it and put the middleware class in some other file). 3. Put the FacebookUserMiddleware python-path in the MIDDLEWARE_CLASSES in your settings.py (after facebook.djangofb.FacebookMiddleware). You probably will add some fields to FacebookUser model class :)

• middleware
• user
• facebook

Tue 24 Jul 2012 Read More

SectionedForm

Sometimes we need divide forms in fieldsets, but this make us declare all fields in HTML template manually. This class is to help you to do this by a easy way. **How to use** First, download this file as name "sectioned_form.py" Later, turn your form inherited from the class **SectionedForm**, override method "_html_output" and declare fieldsets and fieldset_template attribute, like below: from sectioned_form import SectionedForm class MyForm(forms.ModelForm, SectionedForm): fieldsets = ( (None, ('name','age','date')), (_('Documents'), ('number','doc_id')), ) fieldset_template = "<h2>%s</h2>" def _html_output(self, *args, **kwargs): return SectionedForm._html_output(self, *args, **kwargs)

• newforms
• forms
• form
• formset

Tue 02 Sep 2014 Read More

Date/time util template filters

**Explanations:** - the series "is_*_of" was created 'cos it's easier write: `{% if 10|is_day_of:date and user %}` than write: `{% ifequal date.day 10 %}{% if user %}...` - the series "inc/dec" is not complete, but can the extended to day, hour, minute, etc as you needs. It's util to inc 10 months since 05/31/2006 by example and get a 2007's date :) **Setup:** Insert the snippet into an_app/templatetags/datetimeutils.py. **Use in template:** `{% load datetimeutils %}` and use filters as following: - `{{ 30|is_day_of:a_date_time_variable }}` - `{{ 11|is_month_of:a_date_time_variable }}` - `{{ 2006|is_year_of:a_date_time_variable }}` - `{{ 58|is_minute_of:a_date_time_variable }}` - `{{ 23|is_hour_of:a_date_time_variable }}` - `{{ a_date_time_variable|dec_year:2 }}` - `{{ a_date_time_variable|dec_month:2 }}` - `{{ a_date_time_variable|inc_year:2 }}` - `{{ a_date_time_variable|inc_month:2 }}`

• date
• time
• template-filters

Tue 02 Sep 2014 Read More

Middleware to move tags <script> to the bottom

This middleware makes the page load faster because it moves all tags <script> to the end of document. When a tag <script> loads, it blocks parallel loading, so, the best practice is load them after load CSS and images. To use it, just put in a file and add to your setting MIDDLEWARE_CLASSES.

• performance
• script
• otimization

Thu 18 Aug 2011 Read More

Protect anti robots template tag

This code works like that in the Google Groups you see and when try to see an e-mail and it is like this "[email protected]" with a link to write a captcha code and see the true value. You can use it for anything you want: links, blocks of texts, block of HTML, etc. To use in your template, place the a code like this (remember to load the template tags file with a {% load file_name %} before): {% protectantirobots %} <a href="mailto: {{ office.email }}">{{ office.email }}</a> {% endprotectantirobots %} You can also use **django-plus** application to do this: [http://code.google.com/p/django-plus/](http://code.google.com/p/django-plus/)

• captcha
• security
• protect
• anti
• robots
• safe

Sun 21 Aug 2011 Read More

Class ModelInfo for show object info

This class works in compatibility with a ModelForm, but instead of show a form, it shows the field values. The Meta class attributes can be used to customize fields to show, to be excluded, to divide by sections, to urlize text fields, etc. **Example 1:** class InfoSingleCertificate(ModelInfo): class Meta: model = SingleCertificate sections = ( (None, ('vessel','description','document','comments','status',)), ('Issue', ('issue_date','issue_authority','issue_location',)), ) **Example 2:** class InfoSingleCertificate(ModelInfo): class Meta: model = SingleCertificate fields = ('vessel','description','document','comments','status', 'issue_date','issue_authority','issue_location',) **How to use:** Just save this snippet as a file in your project, import to your views.py module (or a new module named "info.py") and create classes following seemed sytax you use for ModelForms.

• forms
• model
• display
• modelforms
• info
• values

Mon 06 Jul 2015 Read More

order_by template filter

put this code into a file in a folder "templatetags" inside some application and use it like this: {% load your_file_name %} {% for item in your_list|order_by:"field1,-field2,other_class__field_name"

• template
• filter
• orderby

Sun 11 Jul 2010 Read More

render_to_json

**Explanation:** I think this shortcut can be util for who uses JSON many times and does not want to write same code everytime. **Setup:** Saves the snippet as `myproject/utils.py` or add the code to some place in your project with same ends. **Use in a view:** from myproject.utils import render_to_json from django.contrib.admin.models import User def json_view(request): admin_user = User.objects.get(username='admin') return render_to_json( 'json/example.json', locals(), ) **Update:** This code can be used as complement to [http://www.djangosnippets.org/snippets/154/](JsonResponse snippet) too.

• template
• json

Tue 04 Sep 2012 Read More

Clear FileField/ImageField files in the Admin

The widget for FileField and ImageField has a problem: it doesn't supports clear its value and it doesn't delete the old file when you replace it for a new one. This is a solution for this. It is just for Admin, but you can make changes to be compatible with common forms. The jQuery code will put an **<input type="checkbox">** tag next to every **<input type="file">** and user can check it to clear the field value. When a user just replace the current file for a new one, the old file will be deleted.

• admin
• jquery
• imagefield
• filefield

Tue 02 Sep 2014 Read More

Template Filter attr

You can add this code to a file named "field_attrs.py" in a templatetags folder inside an application. To use it, remember to load the file with the following template tag: {% load field_attrs %} And for each field you want to change the widget's attr: {{ form.phone|attr:"style=width:143px;background-color:yellow"|attr:"size=30" }}

• template
• filter
• newforms
• forms
• form
• field
• attr

Tue 02 Sep 2014 Read More