discourse/lib/mini_sql_multisite_connection.rb
Sam 5f64fd0a21 DEV: remove exec_sql and replace with mini_sql
Introduce new patterns for direct sql that are safe and fast.

MiniSql is not prone to memory bloat that can happen with direct PG usage.
It also has an extremely fast materializer and very a convenient API

- DB.exec(sql, *params) => runs sql returns row count
- DB.query(sql, *params) => runs sql returns usable objects (not a hash)
- DB.query_hash(sql, *params) => runs sql returns an array of hashes
- DB.query_single(sql, *params) => runs sql and returns a flat one dimensional array
- DB.build(sql) => returns a sql builder

See more at: https://github.com/discourse/mini_sql
2018-06-19 16:13:36 +10:00

39 lines
1.1 KiB
Ruby

class MiniSqlMultisiteConnection < MiniSql::Connection
class CustomBuilder < MiniSql::Builder
def initialize(connection, sql)
super
end
def secure_category(secure_category_ids, category_alias = 'c')
if secure_category_ids.present?
where("NOT COALESCE(" << category_alias << ".read_restricted, false) OR " << category_alias << ".id in (:secure_category_ids)", secure_category_ids: secure_category_ids)
else
where("NOT COALESCE(" << category_alias << ".read_restricted, false)")
end
self
end
end
class ParamEncoder
def encode(*sql_array)
# use active record to avoid any discrepencies
ActiveRecord::Base.send(:sanitize_sql_array, sql_array)
end
end
def self.instance
new(nil, param_encoder: ParamEncoder.new, type_map: self.type_map(ActiveRecord::Base.connection.raw_connection))
end
# we need a tiny adapter here so we always run against the
# correct multisite connection
def raw_connection
ActiveRecord::Base.connection.raw_connection
end
def build(sql)
CustomBuilder.new(self, sql)
end
end