@mod.route('/data' ,methods = ['GET'] )
def data():

    offset = int(request.args['offset'])
    limit = int(request.args['limit'])

    s = coll_gazora.count() #Elemek számolása

    button_list = list(range(s//5+2)) # gombok száma

    #gombok és url összeállítása
    d = []
    for u in button_list:
        d.append({'u':u+1, 'url':'?limit=5&offset='+str(int(u)*5)})


    #rendezés
    start_id = coll_gazora.find().sort('_id',pymongo.ASCENDING)

    last_id = start_id[offset]['_id']

    res = coll_gazora.find({'_id': {'$gte': last_id}}).sort('_id',pymongo.ASCENDING).limit(limit)

    output = []
    for i in res:
        output.append ({'_id':i['_id'],'date':i['date'],'clock_position':i['clock_position'],'consumption':i['consumption']})

    # Hibakezelés

    if (offset+limit) < s:
        next_url = '?limit=' + str(limit) + '&offset='+ str(offset+limit)
    else: next_url = ""

    if (offset-limit) >= 0:
        prev_url = '?limit=' + str(limit) + '&offset='+ str(offset-limit)
    else: prev_url = ""

    return render_template('gasmeter/data.html ', d = d[:-1] ,output = output, next_url = next_url, prev_url = prev_url )