How to specify rows and columns of a <textarea > tag using wtforms

Question

Constructing a wtforms\' TextAreaField is something like this:

content = wtf.TextAreaField(\'Content\', id=\"content-area\", validators=[validators.Required()])
         


        

Answer 1

You could simply use this replacement widget that is remembering default values for the rendering:

import wtforms.widgets.core

class TextArea(wtforms.widgets.core.TextArea):
    def __init__(self, **kwargs):
        self.kwargs = kwargs

    def __call__(self, field, **kwargs):
        for arg in self.kwargs:
            if arg not in kwargs:
                kwargs[arg] = self.kwargs[arg]
        return super(TextArea, self).__call__(field, **kwargs)

Now you can add this new widget to your Field:

content = wtf.TextAreaField(
    'Content',
    id='content-area',
    widget=TextArea(rows=50,cols=100),
    validators=[validators.Required()])

You now can render this field without any extra arguments and get a 50x100 textarea.