http://stackoverflow.com/questions/21481229/django-1-6-how-does-the-form-as-p-decide-the-textfield-rows-and-and-cols
I have read the form.as_p method source code, still don't know.[image:
enter image description here]
#models.py
class User(AbstractBaseUser):
description =
models.TextField(max_length=200,blank=True,verbose_name=_('个人说明'))
#rest fields omitted...
#forms.pyclass ProfileForm(forms.ModelForm):
class Meta:
model = User
fields = [ 'description', ]
#template.html,edit the profile<form enctype="multipart/form-data" action=""
method="post">{% csrf_token %}
{{form.as_p}}
<input type="submit" value="提交" /></form>
this is the source code:
def _html_output(self, normal_row, error_row, row_ender, help_text_html,
errors_on_separate_row):
"Helper function for outputting HTML. Used by as_table(), as_ul(), as_p()."
top_errors = self.non_field_errors() # Errors that should be displayed
above all fields.
output, hidden_fields = [], []
for name, field in self.fields.items():
html_class_attr = ''
bf = self[name]
# Escape and cache in local variable.
bf_errors = self.error_class([conditional_escape(error) for error in
bf.errors])
if bf.is_hidden:
if bf_errors:
top_errors.extend(
[_('(Hidden field %(name)s) %(error)s') % {'name': name,
'error': force_text(e)}
for e in bf_errors])
hidden_fields.append(six.text_type(bf))
else:
# Create a 'class="..."' atribute if the row should have any
# CSS classes applied.
css_classes = bf.css_classes()
if css_classes:
html_class_attr = ' class="%s"' % css_classes
if errors_on_separate_row and bf_errors:
output.append(error_row % force_text(bf_errors))
if bf.label:
label = conditional_escape(force_text(bf.label))
label = bf.label_tag(label) or ''
else:
label = ''
if field.help_text:
help_text = help_text_html % force_text(field.help_text)
else:
help_text = ''
output.append(normal_row % {
'errors': force_text(bf_errors),
'label': force_text(label),
'field': six.text_type(bf),
'help_text': help_text,
'html_class_attr': html_class_attr
})
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