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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def view_or_add(self, slug):
        '''
        When access with the slug, It will add the page if there is no record in database.
        '''
        rec_page = MWiki.get_by_uid(slug)

        if rec_page:
            if rec_page.kind == self.kind:
                self.view(rec_page)
            else:
                return False
        else:
            self.to_add(slug)