CODEWITHSUNDEEP
pythontemplatesflaskjinja2flask-wtforms
Giovanni Di Milia
Giovanni Di Milia

Reputation: 14051

Flask-WTForms: how to check if a field is required?

I defined a form in the following way:

class LoginForm(Form):
    login = EmailField(u'Email address', [required(), length(min=5, max=2048), validators.Email()])
    password = PasswordField(u'Password', [required(), length(min=6, max=50)])
    next = HiddenField()
    remember = BooleanField('Remember me')
    submit = SubmitField('Login')

Then I'm writing a generic macro in Jinja2 to render the form fields and I would like to do something like:

{% if field.is_required() %}
  {{ field.label(class_='required') }}
{% else %}
  {{ field.label() }}
{% endif %}

So... is there a way to see if a field is required?

Upvotes: 5

Views: 5054

Answers (1)

DazWorrall
DazWorrall

Reputation: 14210

Validators can set flags which you can check for:

{% if field.flags.required %}field.label(class_='required'){% endif %}

Upvotes: 14

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