Using search_count in odoo - orm

Question

How can I use search_count?
**[controllers.py]**
def register_session(self, prevouseURL, currentURL):
remoteAddr = request.httprequest.environ['REMOTE_ADDR']
_logger.error("currentURL : %r", currentURL)
registerSession = SessionVisitor()
url = URLList()
_logger.error(url.search_count([('url', '=', currentURL)])>0)
**[models.py]**
class URLList(models.Model):
_name = 'webvisitorcalc.url_list'
url = fields.Char(string="URL", required=True)
target_session_id = fields.One2many('webvisitorcalc.session_visitor', 'target_url_ids', string='Target URL')
In this situation i am receiving error:
*2016-06-06 14:41:33,108 30086 ERROR odoov8 openerp.http: Exception during JSON request handling.
Traceback (most recent call last):
File "/home/skif/odoo/openerp/http.py", line 540, in _handle_exception
return super(JsonRequest, self)._handle_exception(exception)
File "/home/skif/odoo/openerp/http.py", line 577, in dispatch
result = self._call_function(**self.params)
File "/home/skif/odoo/openerp/http.py", line 313, in _call_function
return checked_call(self.db, *args, **kwargs)
File "/home/skif/odoo/openerp/service/model.py", line 118, in wrapper
return f(dbname, *args, **kwargs)
File "/home/skif/odoo/openerp/http.py", line 310, in checked_call
return self.endpoint(*a, **kw)
File "/home/skif/odoo/openerp/http.py", line 806, in __call__
return self.method(*args, **kw)
File "/home/skif/odoo/openerp/http.py", line 406, in response_wrap
response = f(*args, **kw)
File "/home/skif/odoo/my-modules/webvisitorcalc/controllers.py", line 31, in register_session
_logger.error(url.search_count([('url', '=', currentURL)])>0)
AttributeError: 'NoneType' object has no attribute 'search_count'*
Ok. I modified code.
**[controllers.py]**
def register_session(self, prevouseURL, currentURL):
remoteAddr = request.httprequest.environ['REMOTE_ADDR']
_logger.error("currentURL : %r", currentURL)
registerSession = SessionVisitor()
url = URLList()
_logger.error(url.search_count([('url', '=', currentURL)])>0)
if url.url_exist(currentURL):
_logger.info("URL exist in DB ")
else:
_logger.info("URL NOT exist in DB ")
**[models.py]**
class URLList(models.Model):
_name = 'webvisitorcalc.url_list'
url = fields.Char(string="URL", required=True)
target_session_id = fields.One2many('webvisitorcalc.session_visitor', 'target_url_ids', string='Target URL')
#api.multi
def url_exist(self, urlForCheck):
_logger.error("Check URL exist in DB ")
result = False
if (self.search_count([('url', '=', urlForCheck)])>0):
result = True
return result
I'm receive error:
*2016-06-06 14:56:50,797 30796 ERROR odoov8 openerp.http: Exception during JSON request handling.
Traceback (most recent call last):
File "/home/skif/odoo/openerp/http.py", line 540, in _handle_exception
return super(JsonRequest, self)._handle_exception(exception)
File "/home/skif/odoo/openerp/http.py", line 577, in dispatch
result = self._call_function(**self.params)
File "/home/skif/odoo/openerp/http.py", line 313, in _call_function
return checked_call(self.db, *args, **kwargs)
File "/home/skif/odoo/openerp/service/model.py", line 118, in wrapper
return f(dbname, *args, **kwargs)
File "/home/skif/odoo/openerp/http.py", line 310, in checked_call
return self.endpoint(*a, **kw)
File "/home/skif/odoo/openerp/http.py", line 806, in __call__
return self.method(*args, **kw)
File "/home/skif/odoo/openerp/http.py", line 406, in response_wrap
response = f(*args, **kw)
File "/home/skif/odoo/my-modules/webvisitorcalc/controllers.py", line 33, in register_session
if url.url_exist():
AttributeError: 'NoneType' object has no attribute 'url_exist'*
In doc (https://www.odoo.com/documentation/8.0/howtos/backend.html) present:
**[openacademy/models.py]**
...
#api.multi
def copy(self, default=None):
default = dict(default or {})
copied_count = self.search_count([('name', '=like', u"Copy of {}%".format(self.name))])
...
In doc (http://odoo-new-api-guide-line.readthedocs.io/en/latest/environment.html?highlight=search#model) present:
>>> self.search_count([('is_company', '=', True)])
26L
I can not understand what I forgot add in my code. Why do I receive errors?