Sha256: 32ccb1fb4b59ea146e7c825bbceb1ce7224b8d980e1080bb78231687dab71999
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Versions: 20
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Stored size: 1.22 KB
Contents
module ActiveRecord
module CollectionCacheKey
def collection_cache_key(collection = all, timestamp_column = :updated_at) # :nodoc:
query_signature = Digest::MD5.hexdigest(collection.to_sql)
key = "#{collection.model_name.cache_key}/query-#{query_signature}"
if collection.loaded?
size = collection.size
if size > 0
timestamp = collection.max_by(×tamp_column).public_send(timestamp_column)
end
else
column_type = type_for_attribute(timestamp_column.to_s)
column = "#{connection.quote_table_name(collection.table_name)}.#{connection.quote_column_name(timestamp_column)}"
query = collection
.unscope(:select)
.select("COUNT(*) AS #{connection.quote_column_name("size")}", "MAX(#{column}) AS timestamp")
.unscope(:order)
result = connection.select_one(query)
if result.blank?
size = 0
timestamp = nil
else
size = result["size"]
timestamp = column_type.deserialize(result["timestamp"])
end
end
if timestamp
"#{key}-#{size}-#{timestamp.utc.to_s(cache_timestamp_format)}"
else
"#{key}-#{size}"
end
end
end
end
Version data entries
20 entries across 20 versions & 4 rubygems