Conrad,
The data type of l.lat and l.lng are same as that of lat_rad and lng_rad.
They are declared as follows:
t.decimal :lat, :precision => 15, :scale => 10
t.decimal :lng, :precision => 15, :scale => 10
The following lines are within the controller file named items_controller.rb
t.lat_rad = (l.lat * BigDecimal.new("3.1415926536 / 180")).to_f
t.lng_rad = (l.lng * BigDecimal.new("3.1415926536 / 180")).to_f
I'm using Ruby version 4.2 on Ubuntu 8.10.
The database I'm using is mysql.
Conrad Taylor wrote:
>
> On Sat, Mar 6, 2010 at 4:39 PM, mamathahl <[email protected]> wrote:
>
>>
>> I have been facing some problem with the datatypes. I have a sample of
>> code
>> as follows.
>>
>> t.lat_rad = (l.lat * BigDecimal.new("3.1415926536 / 180")).to_f
>> t.lng_rad = (l.lng * BigDecimal.new("3.1415926536 / 180")).to_f
>>
>> Initially, the datatype of lat_rad and lng_rad was as follows:
>>
>> t.decimal :lat_rad, :precision => 15, :scale => 10
>> t.decimal :lng_rad, :precision => 15, :scale => 10
>>
>> So, it gave me an error as follows:
>>
>> TypeError in ItemsController#populate
>>
>> wrong argument type BigDecimal (expected Float)
>>
>> Then I changed the data type of lat_rad and lng_rad to float. Even then
>> it
>> is giving me the same error. Any help to solve this problem will be
>> appreciated. Thanks in advance.
>>
>
> What's the type of
>
> l.lat
> l.lng
>
> Also, are the following lines within a migration or controller file?
>
> t.lat_rad = (l.lat * BigDecimal.new("3.1415926536 / 180")).to_f
> t.lng_rad = (l.lng * BigDecimal.new("3.1415926536 / 180")).to_f
>
> Lastly, what version of Ruby and which database you're using?
>
> -Conrad
>
>
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