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How to invoke a Controller function from inside a Model function ?

model session_id controller route

18 Ответы

23638 Представления

Hi !

I basically try to invoke a function from within a Controller that does exactly what I want. But, I can't reach it, neither by importing this controller, nor by using it's route.

To use the function directly, I need an instance of this controller.

To use the route method, I tried using Requests (Python) and a simple get on the route. However, I need the session_id in the headers. And I can't retrieve that info within the Model function, where I am.

I tried with request.session_id, but I got this error:

Traceback (most recent call last):
  File "/home/odoo/server/openerp/service/server.py", line 929, in preload_registries
    registry = RegistryManager.new(dbname, update_module=update_module)
  File "/home/odoo/server/openerp/modules/registry.py", line 370, in new
    openerp.modules.load_modules(registry._db, force_demo, status, update_module)
  File "/home/odoo/server/openerp/modules/loading.py", line 351, in load_modules
    force, status, report, loaded_modules, update_module)
  File "/home/odoo/server/openerp/modules/loading.py", line 255, in load_marked_modules
    loaded, processed = load_module_graph(cr, graph, progressdict, report=report, skip_modules=loaded_modules, perform_checks=perform_checks)
  File "/home/odoo/server/openerp/modules/loading.py", line 176, in load_module_graph
    _load_data(cr, module_name, idref, mode, kind='data')
  File "/home/odoo/server/openerp/modules/loading.py", line 118, in _load_data
    tools.convert_file(cr, module_name, filename, idref, mode, noupdate, kind, report)
  File "/home/odoo/server/openerp/tools/convert.py", line 901, in convert_file
    convert_xml_import(cr, module, fp, idref, mode, noupdate, report)
  File "/home/odoo/server/openerp/tools/convert.py", line 987, in convert_xml_import
    obj.parse(doc.getroot(), mode=mode)
  File "/home/odoo/server/openerp/tools/convert.py", line 853, in parse
    self._tags[rec.tag](self.cr, rec, n, mode=mode)
  File "/home/odoo/server/openerp/tools/convert.py", line 379, in _tag_function
    _eval_xml(self,rec, self.pool, cr, uid, self.idref, context=context)
  File "/home/odoo/server/openerp/tools/convert.py", line 230, in _eval_xml
    res = getattr(model, method)(cr, uid, *args)
  File "/home/odoo/server/openerp/api.py", line 241, in wrapper
    return old_api(self, *args, **kwargs)
  File "/home/odoo/server/openerp/api.py", line 336, in old_api
    result = method(recs, *args, **kwargs)
  File "/home/odoo/my_addons/vimexcom/models/company.py", line 62, in set_params
    headers = {'cookie': 'session_id=%s' % request.session_id}
  File "/usr/lib/python2.7/dist-packages/werkzeug/local.py", line 336, in __getattr__
    return getattr(self._get_current_object(), name)
  File "/usr/lib/python2.7/dist-packages/werkzeug/local.py", line 295, in _get_current_object
    return self.__local()
  File "/usr/lib/python2.7/dist-packages/werkzeug/local.py", line 131, in _lookup
    raise RuntimeError('object unbound')
ParseError: "object unbound" while parsing /home/odoo/my_addons/vimexcom/data/data.xml:10, near
<function model="res.company" name="set_params"/>

Any tips would be appreciated.

Thanks !

Sehrish

hope this will helps: https://learnopenerp.blogspot.com/2020/08/unbound-method-call-controller-function-from-another-controller-odoo.html

Temur

Лучший ответ

if it may help you, then you can get session id as follows:

from openerp import http


session_id = http.request.session.sid

UPDATE:

Controllers are registering itself in the openerp.http.controllers_per_module dict (see code)... so you can get controller instance using module name and controller name under it:

from openerp.http import controllers_per_module

controller_instance = None
for name,instance in controllers_per_module.get('my_module'):
    if name.endswith('my_module.controller.name'):
        controller_instance = instance
        break
if controller_instance != None:
    controller_instance.a_function(*args)

Автор

I tried that, but I got an error (can't remember the error).

Автор

Updated my question.

Temur

http.request.session.sid gives you a session id string.

Автор

Same error with request.session.sid

Temur

ok. it seems session id does not helps

Автор

thanks anyway, I'll find a workaround one day, I'm sure ^^

Temur

you mention direct call, what is problem with it?

Автор

Oh, yeah, if I import the controller (from addons/website/controllers/main import Website) and use it (let's say ... Website.some_function(*args)), I get a "unbound method blablabla must be called with Website instance as first argument ..." But, hey, where do I find that instance ? Can I create one ?

Temur

actually you can create, if you'll have all arguments to "constructor" if required, if no such requirement then it may be as simple as:

Website().some_function(*args)),

Автор

Oh yeah, I'm so stupid. And I pretend to be a developper ? Thanks, I'll try that on Monday ! Good we !

Temur

for ordinary python object it works, I don't know if it'll work for a controller without side effects :) Good we!

Temur

As I doubted it has side effect to create controller instance, it registering itself in a global dict.. and you can get existing instance from there... see updated answer.

Автор

Ok, so far, that's an amazing answer ! But, what if the controller is not registered ? Can I safely instanciate one ?

Temur

Normally it should be registered. as we can see in the code, all direct children of a "Controller" (i.e. "http.Controller") class are registered. So, if a controller class you're interested in is a child of the Controller class, then it's surely registered there. you'll need just figure out it's full name under it's own module in order to find it in the "controllers_per_module". Try to print or log the "controllers_per_module" variable and check if it's a case. Most probably it'll be registered. if not, then you can try to instantiate one and check if it's a safe operation...

Автор

Ok, no, nothing works, and I think it's because my method is called on module update, so, maybe not all the controllers are instanciated at this moment (the Website controller specifically). But, hey, your answer is the right one I think, and I'll accept that. And, for the record, I just copy/pasted/shortened the content of the method I wanted to call so... problem solved.

Axel Mendoza

Maybe you need to call your function in another moment, like after the models registry(pool) is loaded. You could do this by implementing the method _register_hook in your model. Odoo will always call that method in your model to allow you to initialize whatever you want, but you just have the self and cr arguments.

Maybe helps

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