Thanks, on line 2987 I believe the format string is missing the 3rd '%s'
parameter:
return 'ST_DWithin(%s,%s)' %(self.expand(first),
self.expand(second, first.type),
self.expand(third, 'double'))
Should be:
return 'ST_DWithin(%s,%s,%s)' %(self.expand(first),
self.expand(second, first.type),
self.expand(third, 'double'))
On Monday, December 9, 2013 6:06:32 PM UTC-5, Massimo Di Pierro wrote:
> Actually you do understand a lot of about this. That's a trick. It works.
> We can use it in this case too, until we come up with a better design.
> I used the same trick as in REPLACE, in trunk. Please give it a try.
>
> Massimo
>
>
> On Monday, 9 December 2013 16:33:09 UTC-6, User wrote:
>>
>> Forgive me because I don't understand anything about the internals of
>> web2py but doesn't REPLACE take three parameters:
>>
>> def REPLACE(self, first, (second, third)):
>> return 'REPLACE(%s,%s,%s)' % (self.expand(first,'string'),
>> self.expand(second,'string'),
>> self.expand(third,'string'))
>>
>>
>>
>> Also:
>>
>> def ST_ASGEOJSON(self, first, second):
>> """
>> http://postgis.org/docs/ST_AsGeoJSON.html
>> """
>> return 'ST_AsGeoJSON(%s,%s,%s,%s)' %(second['version'],
>> self.expand(first), second['precision'], second['options'])
>>
>>
>>
>> Or do you mean something different?
>>
>>
>> On Monday, December 9, 2013 4:45:27 PM UTC-5, Massimo Di Pierro wrote:
>>
>>> OK. This needs more work than anticipated. Looks like the Query object
>>> only supports unary and binary operators. Give me a little more time. ;-)
>>>
>>> On Monday, 9 December 2013 12:21:37 UTC-6, User wrote:
>>>>
>>>> Thanks. This is what I see at line 2983 in dal.py:
>>>>
>>>> def ST_DWITHIN(self, first, second):
>>>> """
>>>> http://postgis.org/docs/ST_Within.html
>>>> """
>>>> return 'ST_DWithin(%s,%s)' %(self.expand(first),
>>>> self.expand(second, first.type))
>>>>
>>>>
>>>> The proper documentation is at http://postgis.org/docs/ST_DWithin.html
>>>> (note
>>>> the 'D'). Also looks like this is missing the 3rd argument to ST_DWithin:
>>>>
>>>> boolean *ST_DWithin*(geometry g1, geometry g2, double precision
>>>> distance_of_srid);
>>>>
>>>>
>>>> On Sunday, December 8, 2013 9:25:35 AM UTC-5, Massimo Di Pierro wrote:
>>>>
>>>>> Added ST_Dwithin support in trunk. Please check it.
>>>>>
>>>>> On Sunday, 8 December 2013 07:02:06 UTC-6, User wrote:
>>>>>>
>>>>>> I'm storing latitude/longitude coordinates in a geometry field (using
>>>>>> PostgreSQL
>>>>>> 9.1.10):
>>>>>>
>>>>>> Field('point', 'geometry()')
>>>>>>
>>>>>> I understand there is also the geography type but from my reading
>>>>>> geometry is faster and is suitable for small distances (
>>>>>> http://workshops.boundlessgeo.com/postgis-intro/geography.html#why-not-use-geography
>>>>>> )
>>>>>>
>>>>>> I want users to be able to specify a reference point and search for
>>>>>> all records within X distance from the reference point. Using raw SQL I
>>>>>> would use
>>>>>> ST_DWithin<http://postgis.refractions.net/docs/ST_DWithin.html> doing
>>>>>> something like
>>>>>>
>>>>>> SELECT name, ST_AsText(point)
>>>>>> FROM mytable
>>>>>> WHERE ST_DWithin(point, ST_GeomFromText('POINT(40.47112
>>>>>> -76.33)',4326), 0.1)
>>>>>>
>>>>>> But web2py does not seem to support ST_DWithin only st_within. So
>>>>>> how can I achieve a similar result in web2py?
>>>>>>
>>>>>>
--
Resources:
- http://web2py.com
- http://web2py.com/book (Documentation)
- http://github.com/web2py/web2py (Source code)
- https://code.google.com/p/web2py/issues/list (Report Issues)
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