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Thomas
32 lines
1.1 KiB
Go
32 lines
1.1 KiB
Go
package db
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type GistTopic struct {
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GistID uint `gorm:"primaryKey"`
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Topic string `gorm:"primaryKey;size:50"`
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}
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// TopicCount is a topic together with the number of gists tagged with it.
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type TopicCount struct {
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Topic string
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Count int64
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}
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// GetTopicsWithCount returns topics in use, together with how many gists carry
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// each, ordered from most to least used and paginated (limit is typically
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// perPage+1 so callers can detect a following page). Only topics on gists
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// visible to currentUserId are counted (public gists, plus the user's own
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// private ones).
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func GetTopicsWithCount(currentUserId uint, offset int, limit int, perPage int) ([]*TopicCount, error) {
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var topics []*TopicCount
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err := db.Model(&GistTopic{}).
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Select("gist_topics.topic as topic, count(*) as count").
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Joins("join gists on gists.id = gist_topics.gist_id").
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Where("gists.private = 0 or gists.user_id = ?", currentUserId).
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Group("gist_topics.topic").
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Order("count desc, gist_topics.topic asc").
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Limit(limit).
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Offset(offset * perPage).
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Find(&topics).Error
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return topics, err
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}
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