def get_by_category(category):
    e_bike_models = EBikeModel.select().where(EBikeModel.category == category)
    return e_bike_models
def get_all_paginate():
    e_bike_models = EBikeModel.select()
    return e_bike_models
def count_all():
    count = EBikeModel.select().count()
    return count
def get_all(page, paginate_by):
    e_bike_models = EBikeModel.select().paginate(page, paginate_by)
    return e_bike_models