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68 lines
2.5 KiB
68 lines
2.5 KiB
from django.utils.html import conditional_escape |
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from django.utils.encoding import smart_unicode, StrAndUnicode, force_unicode |
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from django.utils.safestring import mark_safe |
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def flatatt(attrs): |
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""" |
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Convert a dictionary of attributes to a single string. |
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The returned string will contain a leading space followed by key="value", |
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XML-style pairs. It is assumed that the keys do not need to be XML-escaped. |
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If the passed dictionary is empty, then return an empty string. |
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""" |
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return u''.join([u' %s="%s"' % (k, conditional_escape(v)) for k, v in attrs.items()]) |
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class ErrorDict(dict, StrAndUnicode): |
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""" |
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A collection of errors that knows how to display itself in various formats. |
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The dictionary keys are the field names, and the values are the errors. |
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""" |
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def __unicode__(self): |
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return self.as_ul() |
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def as_ul(self): |
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if not self: return u'' |
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return mark_safe(u'<ul class="errorlist">%s</ul>' |
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% ''.join([u'<li>%s%s</li>' % (k, force_unicode(v)) |
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for k, v in self.items()])) |
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def as_text(self): |
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return u'\n'.join([u'* %s\n%s' % (k, u'\n'.join([u' * %s' % force_unicode(i) for i in v])) for k, v in self.items()]) |
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class ErrorList(list, StrAndUnicode): |
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""" |
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A collection of errors that knows how to display itself in various formats. |
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""" |
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def __unicode__(self): |
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return self.as_ul() |
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def as_ul(self): |
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if not self: return u'' |
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return mark_safe(u'<ul class="errorlist">%s</ul>' |
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% ''.join([u'<li>%s</li>' % force_unicode(e) for e in self])) |
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def as_text(self): |
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if not self: return u'' |
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return u'\n'.join([u'* %s' % force_unicode(e) for e in self]) |
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def __repr__(self): |
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return repr([force_unicode(e) for e in self]) |
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class ValidationError(Exception): |
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def __init__(self, message): |
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""" |
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ValidationError can be passed any object that can be printed (usually |
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a string) or a list of objects. |
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""" |
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if isinstance(message, list): |
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self.messages = ErrorList([smart_unicode(msg) for msg in message]) |
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else: |
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message = smart_unicode(message) |
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self.messages = ErrorList([message]) |
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def __str__(self): |
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# This is needed because, without a __str__(), printing an exception |
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# instance would result in this: |
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# AttributeError: ValidationError instance has no attribute 'args' |
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# See http://www.python.org/doc/current/tut/node10.html#handling |
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return repr(self.messages)
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