mirror of https://github.com/django/django.git
482 lines
15 KiB
Python
482 lines
15 KiB
Python
"""
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>>> from django.newforms import *
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>>> import datetime
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>>> import re
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# TextInput Widget ############################################################
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>>> w = TextInput()
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>>> w.render('email', '')
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u'<input type="text" name="email" />'
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>>> w.render('email', None)
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u'<input type="text" name="email" />'
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>>> w.render('email', 'test@example.com')
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u'<input type="text" name="email" value="test@example.com" />'
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>>> w.render('email', 'some "quoted" & ampersanded value')
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u'<input type="text" name="email" value="some "quoted" & ampersanded value" />'
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>>> w.render('email', 'test@example.com', attrs={'class': 'fun'})
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u'<input type="text" name="email" value="test@example.com" class="fun" />'
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You can also pass 'attrs' to the constructor:
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>>> w = TextInput(attrs={'class': 'fun'})
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>>> w.render('email', '')
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u'<input type="text" class="fun" name="email" />'
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>>> w.render('email', 'foo@example.com')
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u'<input type="text" class="fun" value="foo@example.com" name="email" />'
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'attrs' passed to render() get precedence over those passed to the constructor:
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>>> w = TextInput(attrs={'class': 'pretty'})
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>>> w.render('email', '', attrs={'class': 'special'})
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u'<input type="text" class="special" name="email" />'
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# Textarea Widget #############################################################
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>>> w = Textarea()
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>>> w.render('msg', '')
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u'<textarea name="msg"></textarea>'
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>>> w.render('msg', None)
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u'<textarea name="msg"></textarea>'
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>>> w.render('msg', 'value')
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u'<textarea name="msg">value</textarea>'
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>>> w.render('msg', 'some "quoted" & ampersanded value')
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u'<textarea name="msg">some "quoted" & ampersanded value</textarea>'
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>>> w.render('msg', 'value', attrs={'class': 'pretty'})
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u'<textarea name="msg" class="pretty">value</textarea>'
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You can also pass 'attrs' to the constructor:
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>>> w = Textarea(attrs={'class': 'pretty'})
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>>> w.render('msg', '')
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u'<textarea class="pretty" name="msg"></textarea>'
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>>> w.render('msg', 'example')
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u'<textarea class="pretty" name="msg">example</textarea>'
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'attrs' passed to render() get precedence over those passed to the constructor:
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>>> w = Textarea(attrs={'class': 'pretty'})
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>>> w.render('msg', '', attrs={'class': 'special'})
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u'<textarea class="special" name="msg"></textarea>'
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# CheckboxInput Widget ########################################################
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>>> w = CheckboxInput()
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>>> w.render('is_cool', '')
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u'<input type="checkbox" name="is_cool" />'
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>>> w.render('is_cool', False)
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u'<input type="checkbox" name="is_cool" />'
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>>> w.render('is_cool', True)
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u'<input checked="checked" type="checkbox" name="is_cool" />'
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>>> w.render('is_cool', False, attrs={'class': 'pretty'})
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u'<input type="checkbox" name="is_cool" class="pretty" />'
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You can also pass 'attrs' to the constructor:
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>>> w = CheckboxInput(attrs={'class': 'pretty'})
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>>> w.render('is_cool', '')
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u'<input type="checkbox" class="pretty" name="is_cool" />'
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'attrs' passed to render() get precedence over those passed to the constructor:
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>>> w = CheckboxInput(attrs={'class': 'pretty'})
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>>> w.render('is_cool', '', attrs={'class': 'special'})
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u'<input type="checkbox" class="special" name="is_cool" />'
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# CharField ###################################################################
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>>> f = CharField(required=False)
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>>> f.to_python(1)
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u'1'
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>>> f.to_python('hello')
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u'hello'
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>>> f.to_python(None)
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u''
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>>> f.to_python([1, 2, 3])
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u'[1, 2, 3]'
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CharField accepts an optional max_length parameter:
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>>> f = CharField(max_length=10, required=False)
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>>> f.to_python('')
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u''
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>>> f.to_python('12345')
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u'12345'
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>>> f.to_python('1234567890')
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u'1234567890'
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>>> f.to_python('1234567890a')
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Traceback (most recent call last):
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...
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ValidationError: [u'Ensure this value has at most 10 characters.']
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CharField accepts an optional min_length parameter:
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>>> f = CharField(min_length=10, required=False)
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>>> f.to_python('')
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Traceback (most recent call last):
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...
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ValidationError: [u'Ensure this value has at least 10 characters.']
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>>> f.to_python('12345')
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Traceback (most recent call last):
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...
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ValidationError: [u'Ensure this value has at least 10 characters.']
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>>> f.to_python('1234567890')
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u'1234567890'
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>>> f.to_python('1234567890a')
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u'1234567890a'
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# IntegerField ################################################################
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>>> f = IntegerField()
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>>> f.to_python('1')
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1
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>>> isinstance(f.to_python('1'), int)
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True
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>>> f.to_python('23')
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23
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>>> f.to_python('a')
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Traceback (most recent call last):
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...
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ValidationError: [u'Enter a whole number.']
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>>> f.to_python('1 ')
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1
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>>> f.to_python(' 1')
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1
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>>> f.to_python(' 1 ')
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1
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>>> f.to_python('1a')
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Traceback (most recent call last):
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...
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ValidationError: [u'Enter a whole number.']
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# DateField ###################################################################
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>>> import datetime
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>>> f = DateField()
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>>> f.to_python(datetime.date(2006, 10, 25))
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datetime.date(2006, 10, 25)
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>>> f.to_python(datetime.datetime(2006, 10, 25, 14, 30))
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datetime.date(2006, 10, 25)
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>>> f.to_python(datetime.datetime(2006, 10, 25, 14, 30, 59))
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datetime.date(2006, 10, 25)
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>>> f.to_python(datetime.datetime(2006, 10, 25, 14, 30, 59, 200))
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datetime.date(2006, 10, 25)
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>>> f.to_python('2006-10-25')
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datetime.date(2006, 10, 25)
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>>> f.to_python('10/25/2006')
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datetime.date(2006, 10, 25)
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>>> f.to_python('10/25/06')
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datetime.date(2006, 10, 25)
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>>> f.to_python('Oct 25 2006')
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datetime.date(2006, 10, 25)
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>>> f.to_python('October 25 2006')
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datetime.date(2006, 10, 25)
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>>> f.to_python('October 25, 2006')
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datetime.date(2006, 10, 25)
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>>> f.to_python('25 October 2006')
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datetime.date(2006, 10, 25)
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>>> f.to_python('25 October, 2006')
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datetime.date(2006, 10, 25)
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>>> f.to_python('2006-4-31')
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Traceback (most recent call last):
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...
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ValidationError: [u'Enter a valid date.']
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>>> f.to_python('200a-10-25')
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Traceback (most recent call last):
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...
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ValidationError: [u'Enter a valid date.']
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>>> f.to_python('25/10/06')
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Traceback (most recent call last):
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...
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ValidationError: [u'Enter a valid date.']
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>>> f.to_python(None)
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Traceback (most recent call last):
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...
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ValidationError: [u'This field is required.']
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>>> f = DateField(required=False)
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>>> f.to_python(None)
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>>> repr(f.to_python(None))
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'None'
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>>> f.to_python('')
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>>> repr(f.to_python(''))
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'None'
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DateField accepts an optional input_formats parameter:
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>>> f = DateField(input_formats=['%Y %m %d'])
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>>> f.to_python(datetime.date(2006, 10, 25))
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datetime.date(2006, 10, 25)
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>>> f.to_python(datetime.datetime(2006, 10, 25, 14, 30))
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datetime.date(2006, 10, 25)
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>>> f.to_python('2006 10 25')
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datetime.date(2006, 10, 25)
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The input_formats parameter overrides all default input formats,
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so the default formats won't work unless you specify them:
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>>> f.to_python('2006-10-25')
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Traceback (most recent call last):
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...
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ValidationError: [u'Enter a valid date.']
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>>> f.to_python('10/25/2006')
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Traceback (most recent call last):
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...
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ValidationError: [u'Enter a valid date.']
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>>> f.to_python('10/25/06')
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Traceback (most recent call last):
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...
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ValidationError: [u'Enter a valid date.']
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# DateTimeField ###############################################################
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>>> import datetime
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>>> f = DateTimeField()
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>>> f.to_python(datetime.date(2006, 10, 25))
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datetime.datetime(2006, 10, 25, 0, 0)
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>>> f.to_python(datetime.datetime(2006, 10, 25, 14, 30))
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datetime.datetime(2006, 10, 25, 14, 30)
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>>> f.to_python(datetime.datetime(2006, 10, 25, 14, 30, 59))
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datetime.datetime(2006, 10, 25, 14, 30, 59)
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>>> f.to_python(datetime.datetime(2006, 10, 25, 14, 30, 59, 200))
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datetime.datetime(2006, 10, 25, 14, 30, 59, 200)
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>>> f.to_python('2006-10-25 14:30:45')
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datetime.datetime(2006, 10, 25, 14, 30, 45)
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>>> f.to_python('2006-10-25 14:30:00')
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datetime.datetime(2006, 10, 25, 14, 30)
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>>> f.to_python('2006-10-25 14:30')
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datetime.datetime(2006, 10, 25, 14, 30)
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>>> f.to_python('2006-10-25')
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datetime.datetime(2006, 10, 25, 0, 0)
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>>> f.to_python('10/25/2006 14:30:45')
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datetime.datetime(2006, 10, 25, 14, 30, 45)
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>>> f.to_python('10/25/2006 14:30:00')
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datetime.datetime(2006, 10, 25, 14, 30)
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>>> f.to_python('10/25/2006 14:30')
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datetime.datetime(2006, 10, 25, 14, 30)
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>>> f.to_python('10/25/2006')
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datetime.datetime(2006, 10, 25, 0, 0)
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>>> f.to_python('10/25/06 14:30:45')
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datetime.datetime(2006, 10, 25, 14, 30, 45)
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>>> f.to_python('10/25/06 14:30:00')
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datetime.datetime(2006, 10, 25, 14, 30)
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>>> f.to_python('10/25/06 14:30')
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datetime.datetime(2006, 10, 25, 14, 30)
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>>> f.to_python('10/25/06')
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datetime.datetime(2006, 10, 25, 0, 0)
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>>> f.to_python('hello')
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Traceback (most recent call last):
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...
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ValidationError: [u'Enter a valid date/time.']
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>>> f.to_python('2006-10-25 4:30 p.m.')
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Traceback (most recent call last):
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...
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ValidationError: [u'Enter a valid date/time.']
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DateField accepts an optional input_formats parameter:
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>>> f = DateTimeField(input_formats=['%Y %m %d %I:%M %p'])
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>>> f.to_python(datetime.date(2006, 10, 25))
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datetime.datetime(2006, 10, 25, 0, 0)
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>>> f.to_python(datetime.datetime(2006, 10, 25, 14, 30))
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datetime.datetime(2006, 10, 25, 14, 30)
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>>> f.to_python(datetime.datetime(2006, 10, 25, 14, 30, 59))
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datetime.datetime(2006, 10, 25, 14, 30, 59)
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>>> f.to_python(datetime.datetime(2006, 10, 25, 14, 30, 59, 200))
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datetime.datetime(2006, 10, 25, 14, 30, 59, 200)
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>>> f.to_python('2006 10 25 2:30 PM')
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datetime.datetime(2006, 10, 25, 14, 30)
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The input_formats parameter overrides all default input formats,
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so the default formats won't work unless you specify them:
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>>> f.to_python('2006-10-25 14:30:45')
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Traceback (most recent call last):
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...
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ValidationError: [u'Enter a valid date/time.']
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# RegexField ##################################################################
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>>> f = RegexField('^\d[A-F]\d$')
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>>> f.to_python('2A2')
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u'2A2'
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>>> f.to_python('3F3')
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u'3F3'
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>>> f.to_python('3G3')
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Traceback (most recent call last):
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...
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ValidationError: [u'Enter a valid value.']
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>>> f.to_python(' 2A2')
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Traceback (most recent call last):
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...
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ValidationError: [u'Enter a valid value.']
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>>> f.to_python('2A2 ')
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Traceback (most recent call last):
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...
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ValidationError: [u'Enter a valid value.']
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Alternatively, RegexField can take a compiled regular expression:
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>>> f = RegexField(re.compile('^\d[A-F]\d$'))
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>>> f.to_python('2A2')
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u'2A2'
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>>> f.to_python('3F3')
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u'3F3'
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>>> f.to_python('3G3')
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Traceback (most recent call last):
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...
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ValidationError: [u'Enter a valid value.']
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>>> f.to_python(' 2A2')
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Traceback (most recent call last):
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...
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ValidationError: [u'Enter a valid value.']
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>>> f.to_python('2A2 ')
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Traceback (most recent call last):
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...
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ValidationError: [u'Enter a valid value.']
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RegexField takes an optional error_message argument:
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>>> f = RegexField('^\d\d\d\d$', 'Enter a four-digit number.')
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>>> f.to_python('1234')
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u'1234'
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>>> f.to_python('123')
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Traceback (most recent call last):
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...
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ValidationError: [u'Enter a four-digit number.']
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>>> f.to_python('abcd')
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Traceback (most recent call last):
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...
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ValidationError: [u'Enter a four-digit number.']
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# EmailField ##################################################################
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>>> f = EmailField()
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>>> f.to_python('person@example.com')
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u'person@example.com'
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>>> f.to_python('foo')
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Traceback (most recent call last):
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...
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ValidationError: [u'Enter a valid e-mail address.']
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>>> f.to_python('foo@')
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Traceback (most recent call last):
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...
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ValidationError: [u'Enter a valid e-mail address.']
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>>> f.to_python('foo@bar')
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Traceback (most recent call last):
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...
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ValidationError: [u'Enter a valid e-mail address.']
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# BooleanField ################################################################
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>>> f = BooleanField()
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>>> f.to_python(True)
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True
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>>> f.to_python(False)
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False
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>>> f.to_python(1)
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True
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>>> f.to_python(0)
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False
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>>> f.to_python('Django rocks')
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True
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# Form ########################################################################
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>>> class Person(Form):
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... first_name = CharField()
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... last_name = CharField()
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... birthday = DateField()
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>>> p = Person({'first_name': u'John', 'last_name': u'Lennon', 'birthday': u'1940-10-9'})
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>>> p.errors()
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{}
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>>> p.is_valid()
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True
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>>> p.errors().as_ul()
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u''
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>>> p.errors().as_text()
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u''
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>>> p.to_python()
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{'first_name': u'John', 'last_name': u'Lennon', 'birthday': datetime.date(1940, 10, 9)}
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>>> print p['first_name']
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<input type="text" name="first_name" value="John" />
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>>> print p['last_name']
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<input type="text" name="last_name" value="Lennon" />
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>>> print p['birthday']
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<input type="text" name="birthday" value="1940-10-09" />
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>>> for boundfield in p:
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... print boundfield
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<input type="text" name="first_name" value="John" />
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<input type="text" name="last_name" value="Lennon" />
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<input type="text" name="birthday" value="1940-10-09" />
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>>> p = Person({'last_name': u'Lennon'})
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>>> p.errors()
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{'first_name': [u'This field is required.'], 'birthday': [u'This field is required.']}
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>>> p.is_valid()
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False
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>>> p.errors().as_ul()
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u'<ul class="errorlist"><li>first_name<ul class="errorlist"><li>This field is required.</li></ul></li><li>birthday<ul class="errorlist"><li>This field is required.</li></ul></li></ul>'
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>>> print p.errors().as_text()
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* first_name
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* This field is required.
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* birthday
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* This field is required.
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>>> p.to_python()
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>>> repr(p.to_python())
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'None'
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>>> p['first_name'].errors
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[u'This field is required.']
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>>> p['first_name'].errors.as_ul()
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u'<ul class="errorlist"><li>This field is required.</li></ul>'
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>>> p['first_name'].errors.as_text()
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u'* This field is required.'
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>>> p = Person()
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>>> print p['first_name']
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<input type="text" name="first_name" />
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>>> print p['last_name']
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<input type="text" name="last_name" />
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>>> print p['birthday']
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<input type="text" name="birthday" />
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>>> class SignupForm(Form):
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... email = EmailField()
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... get_spam = BooleanField()
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>>> f = SignupForm()
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>>> print f['email']
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<input type="text" name="email" />
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>>> print f['get_spam']
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<input type="checkbox" name="get_spam" />
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>>> f = SignupForm({'email': 'test@example.com', 'get_spam': True})
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>>> print f['email']
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<input type="text" name="email" value="test@example.com" />
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>>> print f['get_spam']
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<input checked="checked" type="checkbox" name="get_spam" />
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Any Field can have a Widget class passed to its constructor:
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>>> class ContactForm(Form):
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... subject = CharField()
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... message = CharField(widget=Textarea)
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>>> f = ContactForm()
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>>> print f['subject']
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<input type="text" name="subject" />
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>>> print f['message']
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<textarea name="message"></textarea>
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as_textarea() and as_text() are shortcuts for changing the output widget type:
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>>> f['subject'].as_textarea()
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u'<textarea name="subject"></textarea>'
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>>> f['message'].as_text()
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u'<input type="text" name="message" />'
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The 'widget' parameter to a Field can also be an instance:
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>>> class ContactForm(Form):
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... subject = CharField()
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... message = CharField(widget=Textarea(attrs={'rows': 80, 'cols': 20}))
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>>> f = ContactForm()
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>>> print f['message']
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<textarea rows="80" cols="20" name="message"></textarea>
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Instance-level attrs are *not* carried over to as_textarea() and as_text():
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>>> f['message'].as_text()
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u'<input type="text" name="message" />'
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>>> f = ContactForm({'subject': 'Hello', 'message': 'I love you.'})
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>>> f['subject'].as_textarea()
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u'<textarea name="subject">Hello</textarea>'
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>>> f['message'].as_text()
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u'<input type="text" name="message" value="I love you." />'
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"""
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if __name__ == "__main__":
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import doctest
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doctest.testmod()
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