sample.py

from pytile38.tilebase import (
  TilePointBase,
  TilePointSerializer
)

from pytile38.tilebase import (
  Key,
  Value
)

import json


# Creating a custom serializer for Tile commnands
class Serializer(object):
  @classmethod
  def is_valid(cls, response):
    if response.result:
      return True
    return False

  @classmethod
  def get(cls, instance=None, response=None, id=None, **kwargs):
    result = response.result
    fields = result[1] if (isinstance(result, list) and len(result) > 1) else None
    instance = instance()
    lat, lon = 0.0, 0.0
    if response.kwargs.get("withfields"):
      instance.fields = [tuple(fields[i:i+2]) for i in range(0, len(fields), 2)]
      result = result[0]
    if response.kwargs.get("type") == "point":
      lon, lat = list(map(float, result))     
    elif response.kwargs.get("type") == None:
      lon, lat = list(map(float, result.get("coordinates")))
    instance.lat = lat
    instance.lon = lon
    instance.id = id
    
    return instance

  @classmethod
  def ids(cls, response=None, **kwargs):
    data = response.result[1]
    result = []
    for d in data:
      name, info = d[0:2]
      name = name
      result.append(name)

    return result

  @classmethod
  def nearby(cls, response=None, **kwargs):
    data = response.result[1]
    result = []
    for d in data:
      name, info = d[0:2]
      lat, lon = info.get("coordinates")[::-1]
      coordinates = {"lat": lat, "long": lon}
      item = {"name":name, "coordinates": coordinates}
      result.append(item)

    return result

# Models can be directly queried
# either by creating the object and using Tile command
# or using class instance for manual querying
class Shop(TilePointBase):
  serializer = Serializer
  identifier = Key("shop")
  
  id = Value("")
  lat = Value(0.0)
  lon = Value(0.0)

class Customer(TilePointBase):
  serializer = Serializer
  identifier = Key("customer")
  
  id = Value("")
  lat = Value(0.0)
  lon = Value(0.0)

class CustomerNeighbours(TilePointBase):
  serializer = Serializer
  identifier = Key("shop")

  id = Value("")
  lat = Value(0.0)
  lon = Value(0.0)

  def set(self, **kwargs):
    raise NotImplementedError()

  # override default implementations
  def nearby(self, **kwargs):
    result = {}
    neighbours = super(CustomerNeighbours, self).nearby(**kwargs)   
    myinfo = dict(self)
    result[myinfo.get("id")] = neighbours
    
    return result
  
  def geinfo(self):
    result = {}
    myinfo = dict(self)
    result["name"] = myinfo.get("id")
    result["coordinates"] = {"lat": myinfo.get("lat"), "long": myinfo.get("lon")}   

    return result