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from typing import List |
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from django import forms |
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from django.conf import settings |
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from django.forms import MultiWidget |
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from django.template.loader import render_to_string |
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from .fields.localized_value import LocalizedValue |
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class LocalizedFieldWidget(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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widgets = [] |
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for _ in settings.LANGUAGES: |
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widgets.append(self.widget) |
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super(LocalizedFieldWidget, self).__init__(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 = forms.Textarea |
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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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output.append(widget.render(name + '_%s' % i, widget_value, final_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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SectorLabs /
django-localized-fields
