Hi Sergey,
Are you sure about the model property value. Were you able to get the boolean value, when you debug and see o_model_sett.getProperty("/edit_tables") ?
One of a similar kind sample, you can find it here: Plunker
But it is not based on MVC, it is just a plain HTML page having the model bound to editable property of the text field controls which are used in table. Click on Non-Editable entries in the table are non-editable. Click on Editable then the entries are editable.
Regards,
Sai Vellanki.