discourse/app/models/plugin_store.rb

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# API to wrap up plugin store rows
class PluginStore
attr_reader :plugin_name
def initialize(plugin_name)
@plugin_name = plugin_name
end
def get(key)
self.class.get(plugin_name, key)
end
def get_all(keys)
self.class.get_all(plugin_name, keys)
end
def set(key, value)
self.class.set(plugin_name, key, value)
end
def remove(key)
self.class.remove(plugin_name, key)
end
def self.get(plugin_name, key)
if row = PluginStoreRow.find_by(plugin_name: plugin_name, key: key)
cast_value(row.type_name, row.value)
end
end
def self.get_all(plugin_name, keys)
rows = PluginStoreRow.where('plugin_name = ? AND key IN (?)', plugin_name, keys).to_a
Hash[rows.map { |row| [row.key, cast_value(row.type_name, row.value)] }]
end
def self.set(plugin_name, key, value)
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hash = { plugin_name: plugin_name, key: key }
row = PluginStoreRow.find_by(hash) || PluginStoreRow.new(hash)
row.type_name = determine_type(value)
# nil are stored as nil
row.value =
if row.type_name == "JSON"
value.to_json
elsif value
value.to_s
end
row.save
end
def self.remove(plugin_name, key)
PluginStoreRow.where(plugin_name: plugin_name, key: key).destroy_all
end
def self.determine_type(value)
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value.is_a?(Hash) || value.is_a?(Array) ? "JSON" : value.class.to_s
end
def self.map_json(item)
if item.is_a? Hash
ActiveSupport::HashWithIndifferentAccess.new item
elsif item.is_a? Array
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item.map { |subitem| map_json subitem }
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else
item
end
end
def self.cast_value(type, value)
case type
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when "Integer", "Fixnum" then value.to_i
when "TrueClass", "FalseClass" then value == "true"
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when "JSON" then map_json(::JSON.parse(value))
else value
end
end
end