mirror of
https://github.com/SectorLabs/django-localized-fields.git
synced 2025-04-24 19:32:53 +03:00
87 lines
2.8 KiB
Python
87 lines
2.8 KiB
Python
from typing import List
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from django.conf import settings
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from django import forms
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from django.contrib.admin import widgets
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from django.template.loader import render_to_string
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from .value import LocalizedValue
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class LocalizedFieldWidget(forms.MultiWidget):
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"""Widget that has an input box for every language."""
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widget = forms.Textarea
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def __init__(self, *args, **kwargs):
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"""Initializes a new instance of :see:LocalizedFieldWidget."""
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initial_widgets = [
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self.widget
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for _ in settings.LANGUAGES
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]
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super().__init__(initial_widgets, *args, **kwargs)
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def decompress(self, value: LocalizedValue) -> List[str]:
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"""Decompresses the specified value so
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it can be spread over the internal widgets.
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Arguments:
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value:
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The :see:LocalizedValue to display in this
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widget.
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Returns:
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All values to display in the inner widgets.
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"""
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result = []
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for lang_code, _ in settings.LANGUAGES:
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if value:
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result.append(value.get(lang_code))
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else:
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result.append(None)
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return result
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class AdminLocalizedFieldWidget(LocalizedFieldWidget):
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widget = widgets.AdminTextareaWidget
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template = 'localized_fields/admin/widget.html'
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def render(self, name, value, attrs=None):
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if self.is_localized:
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for widget in self.widgets:
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widget.is_localized = self.is_localized
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# value is a list of values, each corresponding to a widget
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# in self.widgets.
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if not isinstance(value, list):
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value = self.decompress(value)
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output = []
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final_attrs = self.build_attrs(attrs)
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id_ = final_attrs.get('id')
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for i, widget in enumerate(self.widgets):
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try:
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widget_value = value[i]
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except IndexError:
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widget_value = None
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if id_:
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final_attrs = dict(final_attrs, id='%s_%s' % (id_, i))
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widget_attrs = self.build_widget_attrs(widget, widget_value, final_attrs)
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output.append(widget.render(name + '_%s' % i, widget_value, widget_attrs))
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context = {
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'id': final_attrs.get('id'),
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'name': name,
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'widgets': zip([code for code, lang in settings.LANGUAGES], output),
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'available_languages': settings.LANGUAGES
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}
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return render_to_string(self.template, context)
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@staticmethod
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def build_widget_attrs(widget, value, attrs):
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attrs = dict(attrs) # Copy attrs to avoid modifying the argument.
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if (not widget.use_required_attribute(value) or not widget.is_required) \
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and 'required' in attrs:
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del attrs['required']
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return attrs
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