On Sat, Mar 6, 2010 at 8:03 PM, mamathahl <[email protected]> wrote:
>
> 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.
>
>
Ruby version 4.2 doesn't exist. Please execute the following command
and post the results:
ruby -v
Next, what's the exact value of both l.lat and l.lng?
-Conrad
> 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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