Disclaimer: I am a beginner with python and Django but have Drupal programming experience.
How can I override the default widget of this:
#models.py class Project(models.Model): color_mode = models.CharField(max_length=50, null=True, blank=True, help_text='colors - e.g black and white, grayscale')
in my form with a select box? Is the following OK or am I missing something?
#forms.py from django.forms import ModelForm, Select class ProjectForm(ModelForm): class Meta: model = Project fields = ('title', 'date_created', 'path', 'color_mode') colors = ( ('mixed', 'Mixed (i.e. some color or grayscale, some black and white)'), ('color_grayscale', 'Color / Grayscale'), ('black_and_white', 'Black and White only'), ) widgets = {'color_mode': Select(choices=colors)}
After reading https://docs.djangoproject.com/en/dev/topics/forms/modelforms/#overriding-the-default-field-types-or-widgets, I am lost since the example only discusses TextArea and the widgets discussion seems to exclude ModelForm.
Thanks!
Overriding the default fields To specify a custom widget for a field, use the widgets attribute of the inner Meta class. This should be a dictionary mapping field names to widget classes or instances. The widgets dictionary accepts either widget instances (e.g., Textarea(...) ) or classes (e.g., Textarea ).
You can override forms for django's built-in admin by setting form attribute of ModelAdmin to your own form class. See: https://docs.djangoproject.com/en/dev/ref/contrib/admin/#django.contrib.admin.ModelAdmin.form.
Set the exclude attribute of the ModelForm 's inner Meta class to a list of fields to be excluded from the form.
The widget handles the rendering of the HTML, and the extraction of data from a GET/POST dictionary that corresponds to the widget. Whenever you specify a field on a form, Django will use a default widget that is appropriate to the type of data that is to be displayed.
If you want to override the widget for a formfield in general, the best way is to set the widgets
attribute of the ModelForm Meta
class:
To specify a custom widget for a field, use the widgets attribute of the inner Meta class. This should be a dictionary mapping field names to widget classes or instances.
For example, if you want the a CharField for the name attribute of Author to be represented by a <textarea>
instead of its default <input type="text">
, you can override the field’s widget:
from django.forms import ModelForm, Textarea from myapp.models import Author class AuthorForm(ModelForm): class Meta: model = Author fields = ('name', 'title', 'birth_date') widgets = { 'name': Textarea(attrs={'cols': 80, 'rows': 20}), }
The widgets dictionary accepts either widget instances (e.g., Textarea(...)) or classes (e.g., Textarea).
https://docs.djangoproject.com/en/3.2/topics/forms/modelforms/#overriding-the-default-fields
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