The odooinfo from tardo

Systematic RPC request on pageload is wasteful

Context: users of this extension have found themselves blocked on odoo.com when the RPC rate-limiting was made more strict.

It turns out that if you open several tabs on a single Odoo website (let's say you open a series of forum questions with the same tag to read them), you're going to fire several /jsonrpc for each tab.
Even if you're not using the extension.
All of them requesting the exact same info.

This could be avoided easily I think.

The ideal behavior would be to depend only on session_info when it is available, otherwise wait until the user asks for the info to load it. Currently all Odoo websites are aware of which users are using the extension, all the time, passively.
And even if on-demand loading is not desired, you could cache the information for some time (let's say 1 hour) in the local storage, instead of reloading it constantly.

PS: The same problem exists in the OdooTerminal extension apparently

AccessError when using v13 and list_db = false

Fresh odoo 13.0 with website.
configure it with list_db = false
Browse the website. A popup with access error appears.

Error logs:

Server application error
 Error code: 200 
 Error message: Odoo Server Error 
 Error data message:
 Access denied 
 Error data debug:
 Traceback (most recent call last):
  File "/opt/odoo/custom/src/odoo/odoo/http.py", line 619, in _handle_exception
    return super(JsonRequest, self)._handle_exception(exception)
  File "/opt/odoo/custom/src/odoo/odoo/http.py", line 309, in _handle_exception
    raise pycompat.reraise(type(exception), exception, sys.exc_info()[2])
  File "/opt/odoo/custom/src/odoo/odoo/tools/pycompat.py", line 14, in reraise
    raise value
  File "/opt/odoo/custom/src/odoo/odoo/http.py", line 664, in dispatch
    result = self._call_function(**self.params)
  File "/opt/odoo/custom/src/odoo/odoo/http.py", line 345, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "/opt/odoo/custom/src/odoo/odoo/service/model.py", line 93, in wrapper
    return f(dbname, *args, **kwargs)
  File "/opt/odoo/custom/src/odoo/odoo/http.py", line 338, in checked_call
    result = self.endpoint(*a, **kw)
  File "/opt/odoo/custom/src/odoo/odoo/http.py", line 909, in __call__
    return self.method(*args, **kw)
  File "/opt/odoo/custom/src/odoo/odoo/http.py", line 510, in response_wrap
    response = f(*args, **kw)
  File "/opt/odoo/custom/src/odoo/odoo/addons/base/controllers/rpc.py", line 71, in jsonrpc
    return dispatch_rpc(service, method, args)
  File "/opt/odoo/custom/src/odoo/odoo/http.py", line 138, in dispatch_rpc
    result = dispatch(method, params)
  File "/opt/odoo/custom/src/odoo/odoo/service/db.py", line 446, in dispatch
    return g[exp_method_name](*params)
  File "/opt/odoo/custom/src/odoo/odoo/service/db.py", line 417, in exp_list
    raise odoo.exceptions.AccessDenied()
odoo.exceptions.AccessDenied: Access denied
ajax.js:35:25
uncaught exception: Object

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Systematic RPC request on pageload is wasteful

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