Database creation simpler command + docs

Database can be created by command calling standard SQLALchemy create_all() procedure and it's now documented as well as tip for use migrations.

docs/install/database.rst

@@ -0,0 +1,23 @@
+Database
+========
+
+In order to create and maintain the database, you can use migrations
+by `Flask-Migrate`_:
+
+::
+
+    $ repocribro db --help
+
+
+Or you can use standard `SQLAlchemy procedure`_ ``db.create_all()``via:
+
+::
+
+    $ repocribro create-db
+
+
+Both will try to create tables into database specified in the
+:doc:`config`.
+
+.. _Flask-Migrate: https://flask-migrate.readthedocs.io/en/latest/
+.. _SQLAlchemy procedure: http://docs.sqlalchemy.org/en/latest/core/metadata.html?highlight=create_all#sqlalchemy.schema.MetaData.create_all

docs/install/index.rst

@@ -5,5 +5,6 @@ Installation
    :maxdepth: 2
 
    install
+   database
    config
    requirements

repocribro/commands/__init__.py

@@ -1,3 +1,4 @@
+from .db_create import DbCreateCommand
 from .repocheck import RepocheckCommand
 
-__all__ = ['RepocheckCommand']
+__all__ = ['DbCreateCommand', 'RepocheckCommand']

repocribro/commands/db_create.py

@@ -0,0 +1,12 @@
+from flask_script import Command
+
+
+class DbCreateCommand(Command):
+    """Perform basic create all tables"""
+
+    # TODO: think about clear, drop_all, dump, ..
+    def run(self):
+        from ..database import db
+        print('Performing db.create_all()')
+        db.create_all()
+        print('Database has been created')

repocribro/manage.py

@@ -1,7 +1,7 @@
 import flask_script
 import flask_migrate
 
-from .commands import RepocheckCommand
+from .commands import DbCreateCommand, RepocheckCommand
 from .repocribro import create_app, PROG_NAME, VERSION
 
 
@@ -14,6 +14,7 @@ def run():
                        version='{} v{}'.format(PROG_NAME, VERSION))
 
     manager.add_command('db', flask_migrate.MigrateCommand)
+    manager.add_command('db-create', DbCreateCommand)
     manager.add_command('repocheck', RepocheckCommand)
 
     # TODO: allow extension add options & commands