def __init__(self, *args, **kwargs):
# Gets multilingual fields from translation class
self.multilingual_fields = get_multilingual_fields(self._meta.model)
# Gets default second language from arguments, if informed. Default value is None
self.default_second_language = kwargs.pop('default_second_language', self.default_second_language)
if self.default_second_language is not None:
self.default_second_language = lang_format(self.default_second_language)
self.available_languages = map(lang_format, kwargs.pop('available_languages', [code.lower() for code in settings.MANAGED_LANGUAGES]))
self.display_language = lang_format(kwargs.pop('display_language', self.display_language))
if self.multilingual_fields:
# Change field widgets replacing common TextInput and Textarea to Multilingual respective ones
for field_name in self.multilingual_fields:
if field_name not in self.base_fields:
continue
if isinstance(self.base_fields[field_name], forms.CharField):
if isinstance(self.base_fields[field_name].widget,forms.Textarea):
self.base_fields[field_name] = MultilingualTextField(
label=_(self.base_fields[field_name].label),
required=self.base_fields[field_name].required)
else:
self.base_fields[field_name] = MultilingualCharField(
label=_(self.base_fields[field_name].label),
required=self.base_fields[field_name].required,
max_length=self.base_fields[field_name].max_length)
super(MultilingualBaseForm, self).__init__(*args, **kwargs)
if self.multilingual_fields:
# Sets instance attributes on multilingual fields
for field_name in (self.multilingual_fields or []):
if field_name not in self.fields:
continue
# Field
self.fields[field_name].instance = self.instance
self.fields[field_name].default_second_language = self.default_second_language
self.fields[field_name].available_languages = self.available_languages
self.fields[field_name].display_language = self.display_language
# Widget
self.fields[field_name].widget.instance = self.instance
self.fields[field_name].widget.default_second_language = self.default_second_language
self.fields[field_name].widget.available_languages = self.available_languages
self.fields[field_name].widget.display_language = self.display_language
if self.data:
self.fields[field_name].widget.form_data = self.data
# Display language for multilingual select widgets
# OBS: those aren't multilingual fields from self.multilingual_fields because their
# translation is from another model class
for field_name in self.fields.keys():
if isinstance(self.fields[field_name], (MultilingualModelChoiceField,)):
self.fields[field_name].widget.display_language = self.display_language
self.fields[field_name].widget.queryset = self.fields[field_name].queryset
self.fields[field_name].widget.label_field = self.fields[field_name].label_field
def render(self, name, value, attrs=None):
# Calculates values
values = {}
for lang in map(lang_format, self.available_languages):
# fixme: get from settings # English is the default language
if lang == 'en':
values[lang] = value
# If there is initial value for this field
elif self.form_data:
values[lang] = self.form_data['%s|%s'%(name,lang)]
# If there is an instance (modifying), get translation from it
elif self.instance:
values[lang] = value
# try to remove the formset prefix
column = name
pattern = re.compile('^[a-z_][a-z0-9_]*-[0-9]+-(.+)$')
match = pattern.match(column)
if match:
column = match.group(1)
# Sets the current language to values dictionary
values[lang] = self.get_value_by_language(column, value, lang)
# If it's adding, translated value is empty
else:
values[lang] = ''
# Creates and renders widgets
wargs = self.get_widget_args()
widgets, rendereds = [], []
# Sorts the languages list with priority to display language first
ordered_languages = ([lang for lang in settings.MANAGED_LANGUAGES_CHOICES if lang_format(lang[0]) == lang_format(self.display_language)] +
[lang for lang in settings.MANAGED_LANGUAGES_CHOICES if lang_format(lang[0]) != lang_format(self.display_language)])
for lang,label in ordered_languages:
lang = lang_format(lang)
widget = self.widget_class(**wargs)
widgets.append(widget)
# FIXME: get main language from settings
w_name = lang == 'en' and name or '%s|%s'%(name,lang)
css_class = 'multilingual-value '+lang
if lang == self.default_second_language:
css_class = ' '.join([css_class, 'default-second-language'])
rendereds.append('<div class="%s"><b>%s</b>%s</div>' % (css_class, label, widget.render(w_name, values[lang])))
# FIXME: change multilingual to polyglot
return '<div class="multilingual">%s</div>'%('\n'.join(rendereds))
def save_translations(self, obj):
"""This method is because you can save without commit, so you can call this yourself."""
if not hasattr(obj, 'translations'):
return
for lang, label in settings.TARGET_LANGUAGES:
lang = lang_format(lang)
# Get or create translation object
try:
trans = obj.translations.get(language=lang)
except obj.translations.model.DoesNotExist:
trans = obj.translations.model(language=lang)
trans.content_object = obj
# Sets fields values
for field_name in (self.multilingual_fields or []):
# FIXME: get main language from settings
if lang == 'en' or field_name not in self.fields:
continue
field_name_trans = '%s|%s' % (field_name, lang)
if self.prefix:
field_name_trans = '%s-%s' % (self.prefix,
field_name_trans)
if field_name_trans in self.data:
setattr(trans, field_name, self.data[field_name_trans])
trans.save()
def save_translations(self, obj):
"""This method is because you can save without commit, so you can call this yourself."""
if not hasattr(obj, 'translations'):
return
for lang,label in settings.TARGET_LANGUAGES:
lang = lang_format(lang)
# Get or create translation object
try:
trans = obj.translations.get(language=lang)
except obj.translations.model.DoesNotExist:
trans = obj.translations.model(language=lang)
trans.content_object = obj
# Sets fields values
for field_name in (self.multilingual_fields or []):
# FIXME: get main language from settings
if lang == 'en' or field_name not in self.fields:
continue
field_name_trans = '%s|%s'%(field_name,lang)
if self.prefix:
field_name_trans = '%s-%s'%(self.prefix,field_name_trans)
if field_name_trans in self.data:
setattr(trans, field_name, self.data[field_name_trans])
trans.save()
def get_value_by_language(self, field_name, value, language):
# Returns translation for given language and value
try:
translation = self.instance.translations.get(language=lang_format(language))
except self.instance.translations.model.DoesNotExist:
return ''
else:
return getattr(translation, field_name, '')
def get_value_by_language(self, field_name, value, language):
# Returns translation for given language and value
try:
translation = self.instance.translations.get(
language=lang_format(language))
except self.instance.translations.model.DoesNotExist:
return ''
else:
return getattr(translation, field_name, '')
def render(self, name, value, attrs=None):
# Calculates values
values = {}
for lang in map(lang_format, self.available_languages):
# fixme: get from settings # English is the default language
if lang == 'en':
values[lang] = value
# If there is initial value for this field
elif self.form_data:
values[lang] = self.form_data['%s|%s' % (name, lang)]
# If there is an instance (modifying), get translation from it
elif self.instance:
values[lang] = value
# try to remove the formset prefix
column = name
pattern = re.compile('^[a-z_][a-z0-9_]*-[0-9]+-(.+)$')
match = pattern.match(column)
if match:
column = match.group(1)
# Sets the current language to values dictionary
values[lang] = self.get_value_by_language(column, value, lang)
# If it's adding, translated value is empty
else:
values[lang] = ''
# Creates and renders widgets
wargs = self.get_widget_args()
widgets, rendereds = [], []
# Sorts the languages list with priority to display language first
ordered_languages = ([
lang for lang in settings.MANAGED_LANGUAGES_CHOICES
if lang_format(lang[0]) == lang_format(self.display_language)
] + [
lang for lang in settings.MANAGED_LANGUAGES_CHOICES
if lang_format(lang[0]) != lang_format(self.display_language)
])
for lang, label in ordered_languages:
lang = lang_format(lang)
widget = self.widget_class(**wargs)
widgets.append(widget)
# FIXME: get main language from settings
w_name = lang == 'en' and name or '%s|%s' % (name, lang)
css_class = 'multilingual-value ' + lang
if lang == self.default_second_language:
css_class = ' '.join([css_class, 'default-second-language'])
rendereds.append(
'<div class="%s"><b>%s</b>%s</div>' %
(css_class, label, widget.render(w_name, values[lang])))
# FIXME: change multilingual to polyglot
return '<div class="multilingual">%s</div>' % ('\n'.join(rendereds))
def __init__(self, *args, **kwargs):
# Gets multilingual fields from translation class
self.multilingual_fields = get_multilingual_fields(self._meta.model)
# Gets default second language from arguments, if informed. Default value is None
self.default_second_language = kwargs.pop('default_second_language',
self.default_second_language)
if self.default_second_language is not None:
self.default_second_language = lang_format(
self.default_second_language)
self.available_languages = map(
lang_format,
kwargs.pop('available_languages',
[code.lower() for code in settings.MANAGED_LANGUAGES]))
self.display_language = lang_format(
kwargs.pop('display_language', self.display_language))
if self.multilingual_fields:
# Change field widgets replacing common TextInput and Textarea to Multilingual respective ones
for field_name in self.multilingual_fields:
if field_name not in self.base_fields:
continue
if isinstance(self.base_fields[field_name], forms.CharField):
if isinstance(self.base_fields[field_name].widget,
forms.Textarea):
self.base_fields[field_name] = MultilingualTextField(
label=_(self.base_fields[field_name].label),
required=self.base_fields[field_name].required)
else:
self.base_fields[field_name] = MultilingualCharField(
label=_(self.base_fields[field_name].label),
required=self.base_fields[field_name].required,
max_length=self.base_fields[field_name].max_length)
super(MultilingualBaseForm, self).__init__(*args, **kwargs)
if self.multilingual_fields:
# Sets instance attributes on multilingual fields
for field_name in (self.multilingual_fields or []):
if field_name not in self.fields:
continue
# Field
self.fields[field_name].instance = self.instance
self.fields[
field_name].default_second_language = self.default_second_language
self.fields[
field_name].available_languages = self.available_languages
self.fields[
field_name].display_language = self.display_language
# Widget
self.fields[field_name].widget.instance = self.instance
self.fields[
field_name].widget.default_second_language = self.default_second_language
self.fields[
field_name].widget.available_languages = self.available_languages
self.fields[
field_name].widget.display_language = self.display_language
if self.data:
self.fields[field_name].widget.form_data = self.data
# Display language for multilingual select widgets
# OBS: those aren't multilingual fields from self.multilingual_fields because their
# translation is from another model class
for field_name in self.fields.keys():
if isinstance(self.fields[field_name],
(MultilingualModelChoiceField, )):
self.fields[
field_name].widget.display_language = self.display_language
self.fields[field_name].widget.queryset = self.fields[
field_name].queryset
self.fields[field_name].widget.label_field = self.fields[
field_name].label_field
