[
http://issues.apache.org/jira/browse/MODPYTHON-54?page=comments#action_65702 ]
Nicolas Lehuen commented on MODPYTHON-54:
-----------------------------------------
I have added two function to mod_python.publisher :
def import_page(relative_path, auto_reload=True):
"""
This imports a published page. The relative_path argument is a path
relative to the directory of the page where import_page() is called.
Hence, if we have index.py and foobar.py in the same directory, index.py
can simply do something like :
import mod_python.publisher
foobar = mod_python.publisher.import_page('foobar.py')
If auto_reload is True (the default), the returned object is not really
the module itself, but a placeholder object which allows the real module
to be automatically reloaded whenever its source file changes.
"""
and
def get_page(req, relative_path):
"""
This imports a published page. The relative_path argument is a path
relative to the published page where the request is really handled (not
relative to the path given in the URL).
Warning : in order to maintain consistency in case of module reloading,
do not store the resulting module in a place that outlives the request
duration.
"""
Now we need a bit of documentation.
> Add a way to import a published page into another published page
> ----------------------------------------------------------------
>
> Key: MODPYTHON-54
> URL: http://issues.apache.org/jira/browse/MODPYTHON-54
> Project: mod_python
> Type: Improvement
> Versions: 3.2.0
> Reporter: Nicolas Lehuen
> Assignee: Nicolas Lehuen
> Fix For: 3.2.0
>
> Before mod_python 3.2, standard Python modules and published modules could be
> imported the same way, using apache.import_module. This had a number of
> disadvantages, leading to MODPYTHON-8, MODPYTHON-9, MODPYTHON-10,
> MODPYTHON-11 and MODPYTHON-12.
> All these bugs were fixed by separating the published modules from the
> standard Python module. apache.import_module can still be used to import
> standard modules, but published modules are now fully managed by
> mod_python.publisher, and are not inserted into sys.modules.
> The problem is that there is a use case of importing a published module from
> another published module :
> /index.py----------------
> def index(req):
> return "Hello, world !"
> def utility_function(foobar):
> return foobar+1
> /other.py----------------
> import os
> directory = os.path.split(__file__)[0]
> other_index = apache.import_module("index",path=[directory])
> def index(req):
> return "%s %i"%(other_index.index(req),other_index.utility_function(2004))
> This was alread a bit of a hack in 3.1.4, but in 3.2 it does not really work
> the expected way since the imported module (other_index in the example) is
> not the same module as the one the publisher would use to publish /index.py.
> This could be troublesome if the developer wanted to share some data between
> the modules, e.g. a cache or a connection pool, but not if he only wanted to
> share some code.
> Therefore, we need to provide a clean API in mod_python.publisher to allow
> developers to reference another published module.
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