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Paco Zamora Martinez edited this page Dec 23, 2015
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MongoConnection - START HERE
Submit issues to the moai github site.
There is a Google Groups mailing list.
local mongo = require('mongo')
-- Create a connection object
local db = assert(mongo.Connection.New())
-- connect to the server on localhost
assert(db:connect('localhost'))
-- insert a value into the namespace 'test.values'
assert(db:insert('test.values', {a = 10, b = 'str1'}))
-- the same using a JSON string
assert(db:insert('test.values', "{'a': 20, 'b': 'str2'}"))
-- insert a multiple values into the namespace 'test.values'
assert(db:insert_batch('test.values', {{a = 10, b = 'str1'}, {c = 11, d = 'str2'}}))
-- print the number of rows in the namespace 'test.values'
print(db:count('test.values'))
-- query all the values in the namespace 'test.values'
local q = assert(db:query('test.values', {}))
-- loop through the result set
for result in q:results() do
print(result.a)
print(result.b)
end
LuaMongo is a Lua library that wraps the mongodb C++ API.
The current implementation does not give you raw access to the BSON objects. BSON objects are passed to the API using a Lua table or a JSON string representation. Every returned BSON document is fully marshalled to a Lua table.
luarocks can be used to install LuaMongo last SCM version:
luarocks install "https://raw.githubusercontent.com/moai/luamongo/master/rockspec/luamongo-scm-0.rockspec"
or install any other of the versions available at rockspec
directory.
For modern Linux systems, you will need to update your luarocks configuration
file, usually located at /usr/local/etc/luarocks/config.lua
, adding the
following Lua table:
external_deps_dirs = {
{
prefix='/usr/',
include='include',
lib='lib',
},
{
prefix='/usr/',
include='include',
lib='lib/i386-linux-gnu',
},
{
prefix='/usr/',
include='include',
lib='lib/x86_64-linux-gnu',
},
{
prefix='/usr/local',
},
}