def _get_subscription(self):

        db = current.db
        s3db = current.s3db

        pe_id = current.auth.user.pe_id

        stable = s3db.pr_subscription
        ftable = s3db.pr_filter
        query = (stable.pe_id == pe_id) & \
                (stable.deleted != True)
        left = ftable.on(ftable.id == stable.filter_id)
        row = db(query).select(stable.id,
                               stable.notify_on,
                               stable.frequency,
                               #stable.method,
                               ftable.id,
                               ftable.query,
                               left=left,
                               limitby=(0, 1)).first()

        output = {"pe_id": pe_id}

        get_vars = {}
        if row:
            # Existing settings
            s = getattr(row, "pr_subscription")
            f = getattr(row, "pr_filter")

            rtable = s3db.pr_subscription_resource
            query = (rtable.subscription_id == s.id) & \
                    (rtable.deleted != True)
            rows = db(query).select(rtable.id,
                                    rtable.resource,
                                    rtable.url,
                                    rtable.last_check_time,
                                    rtable.next_check_time)

            if f.query:
                filters = json.loads(f.query)
                for k, v in filters:
                    if v is None:
                        continue
                    if k in get_vars:
                        if type(get_vars[k]) is list:
                            get_vars[k].append(v)
                        else:
                            get_vars[k] = [get_vars[k], v]
                    else:
                        get_vars[k] = v

            output.update({"id": s.id,
                           "filter_id": f.id,
                           "get_vars" : get_vars,
                           "resources": rows,
                           "notify_on": s.notify_on,
                           "frequency": s.frequency,
                           "method": ["EMAIL"] #s.method,
                           })

        else:
            # Form defaults
            output.update({"id": None,
                           "filter_id": None,
                           "get_vars" : get_vars,
                           "resources": None,
                           "notify_on": stable.notify_on.default,
                           "frequency": stable.frequency.default,
                           "method": ["EMAIL"] #stable.method.default
                           })

        return output

    # -------------------------------------------------------------------------
Pushes the specified `button`.
dataset/ETHPy150Open sahana/eden/modules/templates/ARC/controllers.py/subscriptions._get_subscription--crossover with--dataset/ETHPy150Open idumpling/robotx/robotx/template/project_template/resources/CalculatorLibrary.py/CalculatorLibrary.push_button