Newbie having serious problems

Ruby
1

Greetings all,

I’ve just started learning Ruby (and Geo Ruby), and am trying to create
overlays for Google Maps.

I found a [seemingly] great tutorial for doing this @

…and it uses Ruby - cool, eh?

The problem is, when I get to the step of running the code, I get a slew
of errors that I can’t seem to debug with my limited knowledge of Ruby.

ERRORS: (yeah, I know I should really add this location to my $PATH)
(Terminal_Saved_Output2.txt)

SCRIPT:
(gen_encpolygons.rb)

What, exactly, is wrong with his syntax and if there is how can I change
it so it will run?

Doesn’t kEND refer to having an ‘end’ somewhere you shouldn’t?

Any help is greatly appreciated.

Best,
Micah

2

On Mon, Feb 14, 2011 at 1:25 AM, Micah W. [email protected]
wrote:

SCRIPT:
(gen_encpolygons.rb)

What, exactly, is wrong with his syntax and if there is how can I change
it so it will run?

Doesn’t kEND refer to having an ‘end’ somewhere you shouldn’t?

The problem is with this line:

init_borders << “{color: “#0000ff”,n
weight: 5,n
points: '”

Note the quotes around the “#0000ff” which clash with the quotes in
the larger string.

Go through and use %{string} for all multiline strings.

martin

3

On Sun, Feb 13, 2011 at 10:55 PM, Micah W.
[email protected]wrote:

What, exactly, is wrong with his syntax and if there is how can I change
it so it will run?

Hi Micah,

I think that you got the code form part 2 of the tutorial 1 by
clicking on
the “click to expand” link. For some reason, the code on that page is
quite
messed up – for example, notice the lack of backslashes: the ns at
the
end of some of the strings should be \n, which is the escape sequence
for
newline.

The downloadable script file 2 looks OK (based on a quick visual
inspection using Vim). Try downloading it and see if it actually works.

Regards,
Yaser S.

4

Thanks guys!

Okay. At least now the script runs…unsuccessfully, but it runs.

I had to add require ‘rubygems’ at the top because it wasn’t recognizing
‘mysql’.

Now it’s getting as far as line 11 (yea!!!)…
…where it craps out on this line.

borderDB = Mysql::new(‘localhost’, ‘root’, ‘proot’, ‘dbname’)
(not my real proot, nor db name)

and it gives me:
…/…/Developer/usr/bin/gen_encpolygons.rb:11:in new': Access denied for user 'root'@'localhost' (using password: YES) (Mysql::Error) from ../../Developer/usr/bin/gen_encpolygons.rb:11:ingenerate_js_border_overlay’
from …/…/Developer/usr/bin/gen_encpolygons.rb:95

(Yeah, I really need to fix my $PATH)

I’ve checked Mysql, and I don’t have any problem connecting. Could it be
a port issue? I’m running MAMP, and it uses a non-standard port (8889)
for Mysql, but I haven’t had any other problems connecting to it via
Ruby on the command line.

Is this a Mysql issue, or a Ruby issue?

Thanks again for the help, and for putting up with a desperate noobie.

Best,
Micah

5

Micah W. [email protected] writes:

borderDB = Mysql::new(‘localhost’, ‘root’, ‘proot’, ‘dbname’)
(not my real proot, nor db name)

and it gives me:
./…/Developer/usr/bin/gen_encpolygons.rb:11:in `new’: Access denied
for user ‘root’@‘localhost’ (using password: YES) (Mysql::Error)

This is purely a MySQL permissions issue, nothing to do with your Ruby
code. You’re connecting to the MySQL server just fine, but the user and
password you’re trying to use is being denied access. Use your favorite
MySQL admin tool to be sure that you’re using the correct password for
the user ‘root’, and that ‘root’ can log in from ‘localhost’.

sherm–

6

Greetings,

Thank you all for the help.

I fixed the connection. Have everything installed properly (as far as I
can tell - gem list gives me the whole bundle including: mysql (2.8.1)).
MySQL working fine.

So now I get this error when trying to run the script from a shell:

Command:
$ ruby ./Desktop/gen_encpolygons.rb

Returns:
./Desktop/gen_encpolygons.rb:11:in initialize': wrong number of arguments (4 for 0) (ArgumentError) from ./Desktop/gen_encpolygons.rb:11:innew’
from ./Desktop/gen_encpolygons.rb:11:in `generate_js_border_overlay’
from ./Desktop/gen_encpolygons.rb:95

I’ve googled extensively for similar argument errors, and I’m not
finding any good matches (or solutions).

…so I opened an irb session to try a little test:

Command:
Mysql::new(‘localhost’, ‘root’, ‘’, ‘my_database’)

Returns:
NameError: uninitialized constant Mysql
from (irb):1

Then I checked for the gem:

require ‘mysql’
=> true

I’m really lost here.

Best,
Micah

7

I think this is a Mysql problem.

I’m checking my server configuration.
(and fixing my $PATH)

Thanks again guys.

Best,
Micah