The tag determines the generated name (5.2.2.5) from the name related attributes.
To determine the generated value (5.2.2.10) attribute the tag first looks for an expr (5.2.2.3) attribute, then a value attribute, and then if that fails it looks up the generated name in the execution context.
If the generated name contains a non-empty value it will be
written as the name attribute. If the generated
value is not None
it will be escaped and written as
the value attribute. Escaping values makes all &,
<, >, and " characters safe.
For example:
>>> import albatross >>> class Ctx(albatross.SimpleContext): ... def input_add(self, *args): ... print args ... >>> ctx = Ctx('.') >>> ctx.locals.zero = 0 >>> ctx.locals.zerostr = '0' >>> ctx.locals.width = 5 >>> ctx.locals.height = 7 >>> ctx.locals.secret = 42 >>> ctx.locals.other_secret = '<"&' >>> albatross.Template(ctx, '<magic>', ''' ... <al-input name="zero" whitespace> ... <al-input name="zerostr" whitespace> ... <al-input name="width" whitespace> ... <al-input name="area" expr="width * height" whitespace> ... <al-input type="password" name="passwd" whitespace> ... <al-input type="submit" name="login" value="Login" whitespace> ... <al-input type="hidden" name="secret" whitespace> ... <al-input type="hidden" name="other_secret" whitespace> ... ''').to_html(ctx) ('text', 'zero', 0, 0) ('text', 'zerostr', '0', 0) ('text', 'width', 5, 0) ('text', 'area', 35, 0) ('password', 'passwd', None, 0) ('submit', 'login', 'Login', 0) ('hidden', 'secret', 42, 0) ('hidden', 'other_secret', '<"&', 0) >>> ctx.flush_content() <input name="zero" value="0"> <input name="zerostr" value="0"> <input name="width" value="5"> <input name="area" value="35"> <input type="password" name="passwd"> <input type="submit" name="login" value="Login"> <input type="hidden" name="secret" value="42"> <input type="hidden" name="other_secret" value="<"&">
After writing all tag attributes the execution context
input_add() method is called with the arguments; input field
type ('text'
, 'password
, 'submit
, 'reset
,
'hidden
, or 'button'
), the generated name, the
generated value, and a flag indicating whether or not the
list (5.2.2.4) attribute was present.