Hi everyone,
I'm having trouble with backslash escapes in PostgreSQL 8.3 and SQLObject.
I currently have a Resource class that looks like:
class Resource(SQLObject):
resource = UnicodeCol(unique=True)
@classmethod
def autocomplete(cls, input):
""" Controller for the autocomplete widget. """
return cls.select(cls.q.resource.startswith(input))
If I call Resource.autocomplete('blah'), the following statement is
generated:
SELECT collateral.id, collateral.resource, collateral.description,
collateral.icon FROM collateral WHERE ((collateral.resource) LIKE
('blah%'))
That works great, but if I call it with r'\', like so, I get an error from
postgres:
2008-06-09 11:43:21 BST WARNING: nonstandard use of \\ in a string
literal at character 135
2008-06-09 11:43:21 BST HINT: Use the escape string syntax for
backslashes, e.g., E'\\'.
2008-06-09 11:43:21 BST LOG: statement: SELECT collateral.id,
collateral.resource, collateral.description, collateral.icon FROM
collateral WHERE ((collateral.resource) LIKE ('\\%'))
and no records are returned, despite there being records in the table
starting with '\'. Currently I'm working around this by duplicating the
backslash in python, which generates the same error from postgres but
actually returns records beginning with a single backslash. It looks like
postgres has a special E'' syntax for escaping which I don't entirely
understand, but would it make sense for SQLObject to be using that in the
future?
Thanks,
Nick
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