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Fix import of polls from phpBB3

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This commit is contained in:
Gerhard Schlager
2016-04-23 22:42:25 +02:00
parent f1bc7de541
commit a796289b3a
2 changed files with 61 additions and 48 deletions
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37
script/import_scripts/phpbb3/database/database_3_0.rb
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@ -95,33 +95,50 @@ module ImportScripts::PhpBB3
def fetch_poll_options(topic_id)
query(<<-SQL)
SELECT poll_option_id, poll_option_text, poll_option_total
FROM #{@table_prefix}_poll_options
WHERE topic_id = #{topic_id}
ORDER BY poll_option_id
SELECT o.poll_option_id, o.poll_option_text, o.poll_option_total AS total_votes,
o.poll_option_total - (
SELECT COUNT(DISTINCT v.vote_user_id)
FROM #{@table_prefix}_poll_votes v
JOIN #{@table_prefix}_users u ON (v.vote_user_id = u.user_id)
JOIN #{@table_prefix}_topics t ON (v.topic_id = t.topic_id)
WHERE v.poll_option_id = o.poll_option_id AND v.topic_id = o.topic_id
) AS anonymous_votes
FROM #{@table_prefix}_poll_options o
WHERE o.topic_id = #{topic_id}
ORDER BY o.poll_option_id
SQL
end
def fetch_poll_votes(topic_id)
# this query ignores votes from users that do not exist anymore
# this query ignores invalid votes that belong to non-existent users or topics
query(<<-SQL)
SELECT u.user_id, v.poll_option_id
FROM #{@table_prefix}_poll_votes v
JOIN #{@table_prefix}_poll_options o ON (v.poll_option_id = o.poll_option_id AND v.topic_id = o.topic_id)
JOIN #{@table_prefix}_users u ON (v.vote_user_id = u.user_id)
JOIN #{@table_prefix}_topics t ON (v.topic_id = t.topic_id)
WHERE v.topic_id = #{topic_id}
SQL
end
def count_voters(topic_id)
def get_voters(topic_id)
# anonymous voters can't be counted, but lets try to make the count look "correct" anyway
count(<<-SQL)
SELECT MAX(count) AS count
query(<<-SQL).first
SELECT MAX(x.total_voters) AS total_voters,
MAX(x.total_voters) - (
SELECT COUNT(DISTINCT v.vote_user_id)
FROM #{@table_prefix}_poll_votes v
JOIN #{@table_prefix}_poll_options o ON (v.poll_option_id = o.poll_option_id AND v.topic_id = o.topic_id)
JOIN #{@table_prefix}_users u ON (v.vote_user_id = u.user_id)
JOIN #{@table_prefix}_topics t ON (v.topic_id = t.topic_id)
WHERE v.topic_id = #{topic_id}
) AS anonymous_voters
FROM (
SELECT COUNT(DISTINCT vote_user_id) AS count
SELECT COUNT(DISTINCT vote_user_id) AS total_voters
FROM #{@table_prefix}_poll_votes
WHERE topic_id = #{topic_id}
UNION
SELECT MAX(poll_option_total) AS count
SELECT MAX(poll_option_total) AS total_voters
FROM #{@table_prefix}_poll_options
WHERE topic_id = #{topic_id}
) x