I'm using a custom formstyle to apply bootstrap3 to my forms (a modified
copy of the built-in bootstrap3_inline). Importantly, it adds the
form-control class to each input.
This works fine, until you define a widget for a field, and have it fail
validation.
db.define_table('test',
Field('one', 'string', requires=IS_MATCH('STUFF')),
Field('two', 'string', requires=IS_MATCH('STUFF'),
widget=SQLFORM.widgets.string.widget),
)
def index():
# Set variables for the default view
form = SQLFORM(db.test, formstyle='bootstrap3_inline')
form.process()
return dict(form=form)
Despite being identical fields, with identical widgets, field two loses its
formatting. Why? Because of the following code at the bottom of
SQLFORM.accepts()
elif (not ret) and (not auch):
# auch is true when user tries to delete a record
# that does not pass validation, yet it should be deleted
for fieldname in self.fields:
field = (self.table[fieldname]
if fieldname in self.table.fields
else self.extra_fields[fieldname])
### this is a workaround! widgets should always have default not
None!
if not field.widget and field.type.startswith('list:') and \
not OptionsWidget.has_options(field):
field.widget = self.widgets.list.widget
if field.widget and fieldname in request_vars:
if fieldname in self.request_vars:
value = self.request_vars[fieldname]
elif self.record:
value = self.record[fieldname]
else:
value = field.default
row_id = '%s_%s%s' % (
self.table, fieldname, SQLFORM.ID_ROW_SUFFIX)
widget = field.widget(field, value)
parent = self.field_parent[row_id]
if parent:
parent.components = [widget]
if self.errors.get(fieldname):
parent._traverse(False, hideerror)
self.custom.widget[fieldname] = widget
If a field's widget is defined, it overwrites it, for reasons mysterious to
me. This occurs *after* the formstyle is applied.
If I remove that source code, or remove the widget between form setup and
validation:
def index():
# Set variables for the default view
form = SQLFORM(db.test, formstyle='bootstrap3_inline')
db.test.two.widget=None
form.process()
return dict(form=form)
Then everything works fine.
What is the point of that code at the end of accepts(), and is this working
as designed?
--
Resources:
- http://web2py.com
- http://web2py.com/book (Documentation)
- http://github.com/web2py/web2py (Source code)
- https://code.google.com/p/web2py/issues/list (Report Issues)
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