doc: README: Add more information about creating the database and tables

README.md

@@ -2,7 +2,8 @@
 
 ## Setup
 * clone the project
-* install geoip and postgres from your local package manager
+* install geoip and postgis from your local package manager
+  * `$ sudo pacman -S postgis geoip`
 * setup postgres on your machine, see e.g. https://wiki.archlinux.org/title/PostgreSQL
   * `$ sudo su postgres`
   * `$ initdb -D /var/lib/postgres/data`
@@ -10,13 +11,14 @@
 * create postgres user
   * `$ sudo su postgres`
   * `$ createuser --interactive` -> "owl" role with relevant priviledges
-* create postgres database "matcher"
+* create postgres database "matcher" with hstore and postgis extensions
   * `$ psql -U postgres`
   * `> CREATE DATABASE matcher;`
   * `> ALTER DATABASE matcher OWNER TO owl;`
+  * `> CREATE EXTENSION hstore;`
+  * `> CREATE EXTENSION postgis;`
 * create the db tables
-  * TODO find out where credentials are stored 
-  * setup credentials in default.py
+  * setup database credentials and name in default.py
   * `$ python create_db.py`
 * setup a venv
   * enter the venv, e.g. in pycharm

config/example.py

@@ -1,5 +1,8 @@
 """Sample config."""
 
+# POSTGIS
+DB_USER = "owl"
+DB_NAME = "matcher"
 
 ID_TAGGING_SCHEMA_DIR = "/var/lib/data/id-tagging-schema"
 ID_PRESET_DIR = "/var/lib/data/id-tagging-schema/data/presets/"

create_db.py

@@ -2,9 +2,10 @@
 
 from sqlalchemy.schema import CreateIndex, CreateTable
 
+from config.default import DB_USER, DB_NAME
 from matcher import database, model
 
-DB_URL = "postgresql:///matcher"
+DB_URL = f"postgresql://{DB_USER}@localhost/{DB_NAME}"
 database.init_db(DB_URL)