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latest update_index method
def self.update_index(observer_search_data)
# Would be nice to use AR here but not sure how to execut Postgres functions
# when inserting data like this.
rows = Post.exec_sql_row_count("UPDATE #{observer_search_data.table_name} SET search_data = TO_TSVECTOR('english', ?) WHERE #{observer_search_data.foreign_key} = ?", observer_search_data.search_data,
if rows == 0
Post.exec_sql("INSERT INTO #{observer_search_data.table_name} (#{observer_search_data.foreign_key}, search_data) VALUES (?, TO_TSVECTOR('english', ?))",, observer_search_data.search_data)
# don't allow concurrency to mess up saving a post
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