Flask WTF localization with Babel

Question

I've used Flask Babel and have localized my project, but I have a problem with WTF forms, I can't translate the fields shown when field is empty. Any help?

This is working:

return jsonify({'error': gettext('Incorrect Data')}), 406

but when dealing with the Form class, Babel doesn't extract the field. like this:

class LoginForm(Form):
    username = TextField(gettext(u'Username'), validators=[validators.Required()])
    password = PasswordField('Password', validators=[validators.Required()])

I've tried both with/without the 'u' option

Can you post an example of what is working wrong? – wanderlust Jul 27 '15 at 09:17 — wanderlust, Jul 27 '15 at 09:17
Yes. I edited my post. Is that enough? – Jul 27 '15 at 09:36 — , Jul 27 '15 at 09:36

wanderlust · Accepted Answer · 2015-07-27T09:59:17.317

0

Messages for validator Required are set via Required(message=error_message), translate them with babel as well. Refer to WTForms documentation for more details.

class LoginForm(Form):
    username = TextField(gettext(u'Username'), validators=[validators.Required(message='Validation failed for username')])
    password = PasswordField('Password', validators=[validators.Required(message='Validation failed for password')])

edited Jul 27 '15 at 09:59

answered Jul 27 '15 at 09:52

wanderlust

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I think there's a misunderstanding. I don't want to translate the messages. I want to translate the fields' placeholders. The items that are shown when the field is empty – Jul 27 '15 at 10:02
In my case for localization I translate placeholders in python script, and send translated messages to html form, where use them in the following way: `{{form.name(placeholder=ui.get('login'))}}` where `form.name` is `wtforms.fields.StringField`, and `ui` is a dictionary with translated placeholders. – wanderlust Jul 27 '15 at 10:58
Not what I was expecting but it does the trick for me. Thanks – Jul 27 '15 at 18:49
Can you please explain the ui dictionary? How do you define it? Where? – Jul 27 '15 at 20:01
This is a simple dictionary, where I store my localized messages. It looks like: `ui = {'login': 'Ім’я користувача', 'password': 'Пароль'}` I prefer such type of localizing my projects. – wanderlust Jul 28 '15 at 06:31

score 0 · Answer 2 · edited May 14 '19 at 10:22

0

try with lazy_gettext('').

class LoginForm(Form):
    username = TextField(lazy_gettext(u'Username'), validators=[validators.Required()])

in HTML:

{{form.username.label (class="form-control-label") }}

edited May 14 '19 at 10:22

ascripter

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answered May 14 '19 at 08:44

Oj G

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Flask WTF localization with Babel

2 Answers2