#15881: FilteredSelectMultiple does not respect order
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Reporter: bmihelac | Owner: nobody
Type: Cleanup/optimization | Status: new
Component: contrib.admin | Version: 1.3
Severity: Normal | Resolution:
Keywords: javascript | Triage Stage: Accepted
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 1
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Comment (by salmawisoky):
The `FilteredSelectMultiple` widget in Django does not preserve the order
of selected items by default. It displays the available choices in the
order they are defined in the queryset, but the selected items are
displayed in alphabetical order.
If you want to maintain the order of selected items in the
`FilteredSelectMultiple` widget, you can override the widget's rendering
behavior by creating a custom widget that inherits from
`FilteredSelectMultiple` and overrides the `render_option` method. [https
://drift-boss.pro Drift Boss]
Here's an example of how you can create a custom widget that preserves the
order of selected items:
```python
from django.contrib.admin.widgets import FilteredSelectMultiple
class OrderedFilteredSelectMultiple(FilteredSelectMultiple):
def render_option(self, selected_choices, option_value, option_label):
option_value = force_text(option_value)
selected_html = (
' selected="selected"' if option_value in selected_choices
else ''
)
return f'<option
value="{option_value}"{selected_html}>{force_text(option_label)}</option>'
```
In this custom widget, the `render_option` method is overridden to remove
the alphabetical sorting behavior. Instead, it checks if the option value
is in the selected choices and adds the `selected` attribute accordingly.
This ensures that the selected items are rendered in the order they appear
in the selected choices.
To use this custom widget in your form, specify it as the widget for your
`MultipleChoiceField`:
```python
from django import forms
class MyForm(forms.Form):
my_field = forms.MultipleChoiceField(
widget=OrderedFilteredSelectMultiple(attrs={'size': 10}),
choices=my_choices,
)
```
Replace `my_field` with the name of your field and `my_choices` with the
choices for your field.
By using the `OrderedFilteredSelectMultiple` widget instead of the
standard `FilteredSelectMultiple`, the selected items in the
`FilteredSelectMultiple` widget will be displayed in the order they were
selected.
--
Ticket URL: <https://code.djangoproject.com/ticket/15881#comment:4>
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