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This module implements a class for handling URLs.
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This is an abstract superclass for different kinds of URLs
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Like ``.var(...)``, except overwrites keys, where .var simply
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Creates a copy of this URL, but with all the variables set/reset
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Return the content for a tag (for self.html); return None
for an empty tag (like ``<img />``)
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>>> u = URL('http://localhost')
>>> u
<URL http://localhost>
>>> u = u['view']
>>> str(u)
'http://localhost/view'
>>> u['//foo'].param(content='view').html
'<a href="http://localhost/view/foo">view</a>'
>>> u.param(confirm='Really?', content='goto').html
'<a href="http://localhost/view" onclick="return confirm(\'Really?\')">goto</a>'
>>> u(title='See "it"', content='goto').html
'<a href="http://localhost/view?title=See+%22it%22">goto</a>'
>>> u('another', var='fuggetaboutit', content='goto').html
'<a href="http://localhost/view/another?var=fuggetaboutit">goto</a>'
>>> u.attr(content='goto').html
Traceback (most recent call last):
....
ValueError: You must give a content param to <URL http://localhost/view attrs(content="goto")> generate anchor tags
>>> str(u['foo=bar%20stuff'])
'http://localhost/view?foo=bar+stuff'
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>>> i = Image('/images')
>>> i = i / '/foo.png'
>>> i.html
'<img src="/images/foo.png" />'
>>> str(i['alt=foo'])
'<img src="/images/foo.png" alt="foo" />'
>>> i.href
'/images/foo.png'
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>>> u = URL('/')
>>> u = u / 'delete'
>>> b = u.button['confirm=Sure?'](id=5, content='del')
>>> str(b)
'<button onclick="if (confirm(\'Sure?\')) {location.href=\'/delete?id=5\'}; return false">del</button>'
rn r� c C s | j S )N)r{ )r2 r r r r} z s zButton.__str__c C s0 | j �d�r| j d S | j�d�r,| jd S d S )Nrs r )r/ ro r, )r2 r r r rp } s
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>>> u = URL('/')
>>> u = u / 'view'
>>> j = u.js_popup(content='view')
>>> j.html
'<a href="/view" onclick="window.open(\'/view\', \'_blank\'); return false" target="_blank">view</a>'
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