Data population¶
Data population process consists of populate steps. Each step can be marked
as active or inactive. Active steps are executed by ptah_populate
pyramid directive and ptah-populate -a `` command-line script.
also it is possible to specify ``requires
for each step. requires
is a list of steps that should be executed before step.
Define step¶
Interface of populate step is very simple. It is function that accepts
one argument pyramid registry
ptah.interfaces.populate_step
.
import ptah
@ptah.populate('custom-populate-step')
def populate_step(registry):
...
Check ptah.populate
for detailed description of this directive.
Populate data during start up¶
Use ptah_populate() pyramid directive for populate system data during startup.
import ptah
from pyramid.config import Configurator
def main(global_settings, **settings):
config = Configurator(settings=settings)
config.include('ptah')
...
config.ptah_populate()
...
return config.make_wsgi_app()
Populate steps are executed after configration commited.
Command line script¶
Ptah providers ptah-populate
command-line script for data population.
[fafhrd@... MyProject]$ ../bin/ptah-populate development.ini -a
...
Check Data population for detailed description of this script.