Float： TypeError: a float is required about flask-admin

[mrjoes]

Can you provide full exception text?

Or at least from the flask-admin?

[mrjoes]

OK, problem is in wtforms. It attempts to store default value and with new SQLAlchemy versions, it will be instance of the ColumnDefault class. Here's offending snippet::

    default = getattr(column, 'default', None)

    if default is not None:
        # Only actually change default if it has an attribute named
        # 'arg' that's callable.
        callable_default = getattr(default, 'arg', None)

        if callable_default and callable(callable_default):
            default = callable_default(None) 

I think I can override this logic, but I'm not sure what's safe way to do it.

[guotie]

File "E:\bin\Python27\lib\site-packages\flask\app.py", line 1518, in call
return self.wsgi_app(environ, start_response)
File "E:\bin\Python27\lib\site-packages\flask\app.py", line 1506, in wsgi_app
response = self.make_response(self.handle_exception(e))
File "E:\bin\Python27\lib\site-packages\flask\app.py", line 1504, in wsgi_app
response = self.full_dispatch_request()
File "E:\bin\Python27\lib\site-packages\flask\app.py", line 1264, in full_dispatch_request
rv = self.handle_user_exception(e)
File "E:\bin\Python27\lib\site-packages\flask\app.py", line 1262, in full_dispatch_request
rv = self.dispatch_request()
File "E:\bin\Python27\lib\site-packages\flask\app.py", line 1248, in dispatch_request
return self.view_functionsrule.endpoint
File "E:\bin\Python27\lib\site-packages\flask_admin\base.py", line 36, in inner
return f(self, *_kwargs)
File "E:\bin\Python27\lib\site-packages\flask_admin\base.py", line 36, in inner
return f(self, *_kwargs)
File "E:\bin\Python27\lib\site-packages\flask_admin\base.py", line 36, in inner
return f(self, *_kwargs)
File "E:\bin\Python27\lib\site-packages\flask_admin\model\base.py", line 742, in create_view
return_url=return_url)
File "E:\bin\Python27\lib\site-packages\flask_admin\base.py", line 169, in render
return render_template(template, *_kwargs)
File "E:\bin\Python27\lib\site-packages\flask\templating.py", line 123, in render_template
context, ctx.app)
File "E:\bin\Python27\lib\site-packages\flask\templating.py", line 107, in _render
rv = template.render(context)
File "E:\bin\Python27\lib\site-packages\jinja2\environment.py", line 894, in render
return self.environment.handle_exception(exc_info, True)
File "E:\bin\Python27\lib\site-packages\flask_admin\templates\admin\model\create.html", line 2, in top-level template code
{% import 'admin/lib.html' as lib with context %}
File "E:\bin\Python27\lib\site-packages\flask_admin\templates\admin\master.html", line 19, in top-level template code
{% block page_body %}
File "E:\bin\Python27\lib\site-packages\flask_admin\templates\admin\master.html", line 69, in block "page_body"
{% block body %}{% endblock %}
File "E:\bin\Python27\lib\site-packages\flask_admin\templates\admin\model\create.html", line 22, in block "body"
{{ lib.render_form(form, return_url, extra()) }}
File "E:\bin\Python27\lib\site-packages\flask_admin\templates\admin\lib.html", line 90, in template
{{ f() }}
File "E:\bin\Python27\lib\site-packages\wtforms\fields\core.py", line 136, in call
return self.widget(self, **kwargs)
File "E:\bin\Python27\lib\site-packages\wtforms\widgets\core.py", line 120, in call
kwargs['value'] = field._value()
File "E:\bin\Python27\lib\site-packages\wtforms\fields\core.py", line 539, in _value
return format % self.data
TypeError: a float is required

[guotie]

Thanks very much， flask-admin is very very very GREAT!

[dantezhu]

oh, no ,how to fix it?

[mrjoes]

This was, supposedly, fixed by https://github.com/mrjoes/flask-admin/issues/49

Reopened by accident.

[dantezhu]

@mrjoes thanks! It works!