public function update(SMSTemplate $sms, Request $request)
    {
        //--
        $this->_security($sms, 'sms');
        //--

        $this->validate($request, $this->_rules($sms));

        $sms->client_id     = \Auth::user()->client_id;
        $sms->name          = $request->input('name');
        $sms->sender        = $request->input('sender');
        $sms->text          = $request->input('text');
        $sms->save();

        return redirect()->route('sms.index')->with('success', 'SMS template successfully updated!');
    }

    public function _rules($sms = false)
    {
        $rules['name']      = 'required|min:1|max:200|unique:sms_templates,name,NULL,id,client_id,'.\Auth::user()->client_id;
        $rules['sender']    = 'required|min:1|max:50';
        $rules['text']      = 'min:1|max:3000';

        if($sms) {
            $rules['name']  = 'required|min:1|max:200|unique:sms_templates,name,'.$sms->id.',id,client_id,'.\Auth::user()->client_id;
        }

        return $rules;
    }