application:start(mongodb) doesn't work

[juranki]

mongodb:start_link/0 missing.

These fixed it for me:

modify env in mongodb.app:

{env, [{pool_id, default_pool},
       {host, "localhost"},
       {port, 27017}]}

add new clause to mongodb.erl

start_link() ->
     {ok, PoolId} = application:get_env(pool_id),
     {ok, Host} = application:get_env(host),
     {ok, Port} = application:get_env(port),
     start_link(PoolId, Host, Port).