The GeoLite2 example app use erlport via export in order to leverage the Whoosh text indexing and search Python package.
It creates a search index from the free GeoLite2 city database and provides an Elixir module to search the city index.
- Install Python v3.x
- Install Elixir v1.4+
- Setup a virtualenv and activate it
- Run
pip install -r requirements.txtto install the python dependencies - Run
mix deps.getto install the Hex dependencies
Step into the interactive Elixir console with iex -S mix.
Then run the following function to create the city index:
ElixirPython.GeoLite2.create_index()You can search your city index with the following code:
iex(1)> ElixirPython.GeoLite2.search("Berlin")
[%{city: "Berlin", country: "Germany", state: "Land Berlin"},
%{city: "Berlingen", country: "Belgium", state: "Flanders"},
%{city: "Falkenberg", country: "Germany", state: "Land Berlin"},
%{city: "Gosen", country: "Germany", state: "Land Berlin"},
%{city: "Bernau bei Berlin", country: "Germany", state: "Brandenburg"},
%{city: "Berlingen", country: "Switzerland", state: "Thurgau"},
%{city: "Treptow Bezirk", country: "Germany", state: "Land Berlin"},
%{city: "Heinersdorf", country: "Germany", state: "Land Berlin"},
%{city: "Stirling", country: "Canada", state: "Alberta"},
%{city: "New Berlin", country: "United States", state: "Illinois"}]
The default number of returned results is 10.
You can also pass the number of wanted results as the second argument:
iex(2)> ElixirPython.GeoLite2.search("Berlin", 3)
[%{city: "Berlin", country: "Germany", state: "Land Berlin"},
%{city: "Berlingen", country: "Belgium", state: "Flanders"},
%{city: "Falkenberg", country: "Germany", state: "Land Berlin"}]