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Code Issues 32 Releases Wiki Activity

newforms: Added Form.non_field_errors() and added more examples/documentation to the unit tests

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git-svn-id: http://code.djangoproject.com/svn/django/trunk@4119 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Adrian Holovaty
2006-11-27 04:49:26 +00:00
parent 6d36d97cb8
commit 49236b95e9
2 changed files with 75 additions and 2 deletions
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66
tests/regressiontests/forms/tests.py
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@@ -1520,7 +1520,7 @@ A Form's fields are displayed in the same order in which they were defined.
<tr><td>Field13:</td><td><input type="text" name="field13" /></td></tr>
<tr><td>Field14:</td><td><input type="text" name="field14" /></td></tr>
# Sample form processing (as if in a view) ####################################
# Basic form processing in a view #############################################
>>> from django.template import Template, Context
>>> class UserRegistration(Form):
@@ -1568,6 +1568,70 @@ Case 2: POST with erroneous data (a redisplayed form, with errors).
Case 3: POST with valid data (the success message).
>>> print my_function('POST', {'username': 'adrian', 'password1': 'secret', 'password2': 'secret'})
VALID
# Some ideas for using templates with forms ###################################
>>> class UserRegistration(Form):
... username = CharField(max_length=10)
... password1 = CharField(widget=PasswordInput)
... password2 = CharField(widget=PasswordInput)
... def clean(self):
... if self.clean_data.get('password1') and self.clean_data.get('password2') and self.clean_data['password1'] != self.clean_data['password2']:
... raise ValidationError(u'Please make sure your passwords match.')
... return self.clean_data
You have full flexibility in displaying form fields in a template. Just pass a
Form instance to the template, and use "dot" access to refer to individual
fields. Note, however, that this flexibility comes with the responsibility of
displaying all the errors, including any that might not be associated with a
particular field.
>>> t = Template('''<form action="">
... {{ form.username.errors.as_ul }}<p><label>Your username: {{ form.username }}</label></p>
... {{ form.password1.errors.as_ul }}<p><label>Password: {{ form.password1 }}</label></p>
... {{ form.password2.errors.as_ul }}<p><label>Password (again): {{ form.password2 }}</label></p>
... <input type="submit" />
... </form>''')
>>> print t.render(Context({'form': UserRegistration()}))
<form action="">
<p><label>Your username: <input type="text" name="username" /></label></p>
<p><label>Password: <input type="password" name="password1" /></label></p>
<p><label>Password (again): <input type="password" name="password2" /></label></p>
<input type="submit" />
</form>
>>> print t.render(Context({'form': UserRegistration({'username': 'django'})}))
<form action="">
<p><label>Your username: <input type="text" name="username" value="django" /></label></p>
<ul class="errorlist"><li>This field is required.</li></ul><p><label>Password: <input type="password" name="password1" /></label></p>
<ul class="errorlist"><li>This field is required.</li></ul><p><label>Password (again): <input type="password" name="password2" /></label></p>
<input type="submit" />
</form>
To display the errors that aren't associated with a particular field -- e.g.,
the errors caused by Form.clean() -- use {{ form.non_field_errors }} in the
template. If used on its own, it is displayed as a <ul> (or an empty string, if
the list of errors is empty). You can also use it in {% if %} statements.
>>> print t.render(Context({'form': UserRegistration({'username': 'django', 'password1': 'foo', 'password2': 'bar'})}))
<form action="">
<p><label>Your username: <input type="text" name="username" value="django" /></label></p>
<p><label>Password: <input type="password" name="password1" value="foo" /></label></p>
<p><label>Password (again): <input type="password" name="password2" value="bar" /></label></p>
<input type="submit" />
</form>
>>> t = Template('''<form action="">
... {{ form.non_field_errors }}
... {{ form.username.errors.as_ul }}<p><label>Your username: {{ form.username }}</label></p>
... {{ form.password1.errors.as_ul }}<p><label>Password: {{ form.password1 }}</label></p>
... {{ form.password2.errors.as_ul }}<p><label>Password (again): {{ form.password2 }}</label></p>
... <input type="submit" />
... </form>''')
>>> print t.render(Context({'form': UserRegistration({'username': 'django', 'password1': 'foo', 'password2': 'bar'})}))
<form action="">
<ul class="errorlist"><li>Please make sure your passwords match.</li></ul>
<p><label>Your username: <input type="text" name="username" value="django" /></label></p>
<p><label>Password: <input type="password" name="password1" value="foo" /></label></p>
<p><label>Password (again): <input type="password" name="password2" value="bar" /></label></p>
<input type="submit" />
</form>
"""
if __name__ == "__main__":