That does not help me further.

Normaly the two modules run on their own. So they can't depend each other. But if you have the special case to use both modules on the same odoo instance modul A's get_pdf should always be called befor the one of modul B.

I figured out that normaly odoo takes the modules how they have been installed. So if module A is installed first, every thing is fine. But the otherway it isn't.

Is there any kind of parameter which can be set to handle this?

Greets Flo

at code level you can do:

lass MyClass(models.Model):
    ...
    def get_pdf(self,...):
        # here you can do stuff before call overriden method of parent
        res = super(MyClass,self).get_pdf(...)
        # OR do stuff after calling method of superclass...
        #function of parent class called, in res you've result, do your stuff here...
        return res.

module_a (first module) depends: ['whatever']

module_b (second one) depends: ['module_a']

note: do not add in dependency list in module_b modules that are listed already in dependency list of module_a and so on.