Simple application configuration system
This package provides a method to configure an application via standard .ini files. This is convenient for site admins since they are more likely to be familiar with ini files than with ZCML.
Creating config files
There are two ways to tell a Zope instance which configuration files to load: zcml statements and the APPCONFIG environment variable. zcml statements are processed first, making it possible to override standard configuration.
The zcml syntax looks like this:
<configure xmlns="http://namespaces.zope.org/zope"> <include package="z3c.appconfig" file="meta.zcml"/> <appconfig file="default.ini" /> </configure>
This will load the contents of default.ini and merge it into the application configuration.
If an APPCONFIG environment variable is set and points to a file its contents will be merged into the application configuration. This is done last, allowing you to override application defined defaults. For example:
$ APPCONFIG=etc/mysite.ini bin/instance fg
The configuration data can be accessed from your code via a IAppConfig utility. This utility is essentially a standard python dictionary which stores all configuration data. For example lets use a very simple configuration file:
[site] title = My lovely site
You can access the title from python with code like this:
from zope.component import getUtility from z3c.appconfig.interfaces import IAppConfig appconfig=getUtility(IAppConfig) print "Site title is: %s" % appconfig["site"]["title"]
As a convenience a utility method is provided to convert values from a configuration file to booleans: the z3c.appconfig.utils.asBool method:
from z3c.appconfig.utils import asBool print "Pants are on: %s" % asBool("true")
- Add more trove classifiers. [wichert]
- Add a asBool utility method. [wichert]
- Initial release. [wichert]
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