hi all. I've been using sqlalchemy in one of may projects. I
followed the steps in http://www.sqlalchemy.org/trac/wiki/WhatsNewIn04,
but the I got this backtrace:
Traceback (most recent call last):
File "./kress.py", line 664, in ?
main(sys.argv)
File "./kress.py", line 658, in main
mainWindow= Kress (app)
File "./kress.py", line 92, in __init__
self.fromDatabase ()
File "./kress.py", line 109, in fromDatabase
for post in self.model.posts (self.index, self.showPosts, self.activeFeeds,
self.filteringTags, self.textFilter):
File
"/home/mdione/src/projects/kreissy/src/branches/multi-feed-tag/src/kress/model/kressdata.py",
line 96, in posts
p= q.all ()
File "/usr/lib/python2.4/site-packages/sqlalchemy/orm/query.py", line 571, in
all
return list(self)
File "/usr/lib/python2.4/site-packages/sqlalchemy/orm/query.py", line 615, in
__iter__
context = self._compile_context()
File "/usr/lib/python2.4/site-packages/sqlalchemy/orm/query.py", line 864, in
_compile_context
statement.append_order_by(*sql_util.ClauseAdapter(s3).copy_and_process(order_by))
File "/usr/lib/python2.4/site-packages/sqlalchemy/sql/util.py", line 232, in
copy_and_process
self.process_list(list_)
File "/usr/lib/python2.4/site-packages/sqlalchemy/sql/util.py", line 243, in
process_list
list_[i] = self.traverse(list_[i], clone=True)
File "/usr/lib/python2.4/site-packages/sqlalchemy/sql/visitors.py", line 56,
in traverse
for c in t.get_children(**self.__traverse_options__):
File "/usr/lib/python2.4/site-packages/sqlalchemy/sql/expression.py", line
1858, in get_children
return self.bindparams.values()
AttributeError: 'list' object has no attribute 'values'
the relevant code near that Query.all() is:
def posts (self, index=0, count=None, feeds=None, tags=None, search=None):
# apply filters
constraint= Post.c.state!='deleted'
# this two chunks just adds constraints by or'ing feed and tag names.
if len (feeds)>0:
# or'ing feeds
# by cases
feedName= feeds[0]
if len (feeds)==1:
constraint= constraint & (Feed.c.name==feedName) &
self.query.join_to ('feed')
elif len (feeds)>1:
temp= (Feed.c.name==feedName) & self.query.join_to ('feed')
for feedName in feeds[1:]:
temp= temp | (Feed.c.name==feedName) & self.query.join_to
('feed')
constraint= constraint & temp
if len (tags)>0:
tagName= tags[0]
if len (tags)==1:
constraint= constraint & (Tag.c.name==tagName) &
self.query.join_to ('tags')
elif len (tags)>1:
temp= (Tag.c.name==tagName) & self.query.join_to ('tags')
for tagName in tags[1:]:
temp= temp | (Tag.c.name==tagName) & self.query.join_to
('tags')
constraint= constraint & temp
if search is not None:
constraint= constraint & (Post.c.title.like ('%'+search+'%'))
q= self.query.offset (index)
if count is not None:
q= q.limit (count)
q= q.order_by (sqlalchemy.desc ('date'))
q= q.filter (constraint)
print self.query.compile () <---
p= q.all ()
return p
that print hightlighted there gives:
SELECT
tag_1.id AS tag_1_id,
tag_1.name AS tag_1_name,
post.id AS post_id,
post.guid AS post_guid,
post.feed_id AS post_feed_id,
post.title AS post_title,
post.content AS post_content,
post.date AS post_date,
post.state AS post_state
FROM
post
LEFT OUTER JOIN post_tag AS post_tag_2 ON
post.id = post_tag_2.post_id
LEFT OUTER JOIN tag AS tag_1 ON
tag_1.id = post_tag_2.tag_id
ORDER BY
post.oid, post_tag_2.oid
I will try to minimize the example, but I wanted you opinion in the
meanwhile.
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