python - Django doesn't recognise keyword blank on child of forms.Form -

i'm trying create form receive empty strings in of values. form not backed model object. i've defined thus:

class searchform(forms.form):     device = fields.charfield(blank=true)     min_release_date = fields.charfield(blank=true)     price_range = fields.charfield(blank=true)     has_in_app_purchases = fields.charfield(blank=true) 

except when try run test:

def test_valid_no_data(self):     webanalytics.web.search import any_price, default_dates, has_iap_ids     form_data = {         'price_range': any_price[0],         'min_release_date': default_dates[0],         'has_in_app_purchases': has_iap_ids[0]     }     search = searchform(form_data)     self.asserttrue(search.is_valid()) 

i following exception:

error: failure: typeerror (__init__() got unexpected keyword argument 'blank') ---------------------------------------------------------------------- traceback (most recent call last):   file "/usr/local/lib/python2.7/dist-packages/nose/loader.py", line 411, in loadtestsfromname     addr.filename, addr.module)   file "/usr/local/lib/python2.7/dist-packages/nose/importer.py", line 47, in importfrompath     return self.importfromdir(dir_path, fqname)   file "/usr/local/lib/python2.7/dist-packages/nose/importer.py", line 94, in importfromdir     mod = load_module(part_fqname, fh, filename, desc)   file "/workspace/aa/tests/ci/unit/webanalytics/web/test_forms.py", line 5, in <module>     webanalytics.forms import searchform   file "/workspace/aa/webanalytics/forms.py", line 8, in <module>     class searchform(forms.form):   file "/workspace/aa/webanalytics/forms.py", line 15, in searchform     device = fields.charfield(blank=true)   file "/usr/local/lib/python2.7/dist-packages/django/forms/fields.py", line 187, in __init__     super(charfield, self).__init__(*args, **kwargs) typeerror: __init__() got unexpected keyword argument 'blank' 

according docs should ok. missing something?

this because django form fields don't accept blank parameter.

the core parameters accepted django form fields are:

• required
• label
• label_suffix
• initial
• widget
• help_text
• error_messages
• validators

• localize

  you can instead pass required parameter value false. so, if pass empty value – either none or empty string "", form not raise validation error.