61 lines
1.9 KiB
Ruby
61 lines
1.9 KiB
Ruby
#
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# SQL fragments used when querying a list of topics.
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#
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module TopicQuerySQL
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class << self
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# use the constants in conjuction with COALESCE to determine the order with regard to pinned
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# topics that have been cleared by the user. There might be a cleaner way to do this.
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def lowest_date
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"2010-01-01"
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end
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def highest_date
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"infinity"
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end
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def order_by_category_sql(dir)
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"CASE WHEN categories.id = #{SiteSetting.uncategorized_category_id.to_i} THEN '' ELSE categories.name END #{dir}"
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end
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# If you've clearned the pin, use bumped_at, otherwise put it at the top
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def order_with_pinned_sql
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"CASE
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WHEN (COALESCE(topics.pinned_at, '#{lowest_date}') > COALESCE(tu.cleared_pinned_at, '#{lowest_date}'))
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THEN '#{highest_date}'
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ELSE topics.bumped_at
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END DESC"
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end
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# If you've clearned the pin, use bumped_at, otherwise put it at the top
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def order_nocategory_with_pinned_sql
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"CASE
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WHEN topics.pinned_globally and (COALESCE(topics.pinned_at, '#{lowest_date}') > COALESCE(tu.cleared_pinned_at, '#{lowest_date}'))
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THEN '#{highest_date}'
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ELSE topics.bumped_at
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END DESC"
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end
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def order_basic_bumped
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"CASE WHEN (topics.pinned_at IS NOT NULL) THEN 0 ELSE 1 END, topics.bumped_at DESC"
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end
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def order_nocategory_basic_bumped
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"CASE WHEN topics.pinned_globally and (topics.pinned_at IS NOT NULL) THEN 0 ELSE 1 END, topics.bumped_at DESC"
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end
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def order_top_for(score)
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"COALESCE(top_topics.#{score}, 0) DESC, topics.bumped_at DESC"
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end
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def order_top_with_pinned_category_for(score)
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# display pinned topics first
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"CASE WHEN COALESCE(topics.pinned_at, '#{lowest_date}') > COALESCE(tu.cleared_pinned_at, '#{lowest_date}') THEN 1 ELSE 0 END DESC,
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top_topics.#{score} DESC,
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topics.bumped_at DESC"
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end
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end
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end
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