Depot app, adding price posted by Sam Ruby @ Sat, 24 May 2008 01:51:58 -0000

Sam Ruby — Sat, 24 May 2008 01:51:58 -0000

Glad to see it all worked out. I suspect that the real truth is that the with-sqlite-dir option was neither required nor supported and eventually you found a syntax which caused it to be ignored.

I’ve updated this section for the next beta. Hopefully in this way your experiences will help people save time.

Depot app, adding price posted by Rob Sandusky @ Fri, 23 May 2008 23:19:07 -0000

Rob Sandusky — Fri, 23 May 2008 23:19:07 -0000

Hmm…. doesn’t like the—with option:

sudo gem install sqlite3-ruby --with-sqlite-dir=/opt/local
Password:
ERROR:  While executing gem ... (OptionParser::InvalidOption)
    invalid option: --with-sqlite-dir=/opt/local

For fun (and because I love getting error messages), I tried the following:

sudo gem install sqlite3-ruby -- with-sqlite3-dir=/opt/local

added a space both before and after the ”—” ... I figured, why not? How bad could it be?

It seems to have worked. When I run the test script, I now get the correct version of SQLite: 3.5.9. So there’s some progress.

When I run the rake db:migrate in the depot directory (from a fresh shell window), it too seems to complete. So looks like this might be the fix we’ve been looking for (?)

Thanks for the assist.

Depot app, adding price posted by Sam Ruby @ Fri, 23 May 2008 20:47:10 -0000

Sam Ruby — Fri, 23 May 2008 20:47:10 -0000

my bad. should be sqlite3-ruby, thus:

sudo gem install sqlite3-ruby --with-sqlite-dir=/opt/local

And, yes, I believe that the correct incantation is with a 3 in sqlite3-ruby and no 3 in sqlite-dir.

Depot app, adding price posted by Rob Sandusky @ Fri, 23 May 2008 04:00:10 -0000

Rob Sandusky — Fri, 23 May 2008 04:00:10 -0000

The instructions for installing ports seem to have worked (though it took several hours for downloads and installation per the Darwin Ports instruction page—might be worth letting your readers know in advance). It completed and reported a successful update of SQLite3 to v. 3.5.9 (and running sqlite3 at the Unix prompt verifies that v.3.5.9 is installed.)

I then ran:
sudo gem install sqlite-ruby——with-sqlite-dir=/opt/local

and encountered the following error:

ERROR:  Error installing sqlite-ruby:
        ERROR: Failed to build gem native extension.

/usr/local/bin/ruby extconf.rb install sqlite-ruby -- --with-sqlite-dir=/opt/local
checking for main() in -lsqlite... no
checking for sqlite.h... no
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of
necessary libraries and/or headers.  Check the mkmf.log file for more
details.  You may need configuration options.

Regarding the test program, it too worked with the changes you noted, however it reports back that SQLite3 version 3.1.3 (obviously since the gem update failed as noted above)

Depot app, adding price posted by Sam Ruby @ Thu, 22 May 2008 23:13:36 -0000

Sam Ruby — Thu, 22 May 2008 23:13:36 -0000

Now I am starting to understand the scope of the problem. Prior versions of the book pointed users to two sets of instructions: one that allegedly was easier and was based on ports, and one that sounds scary and involved building from source. The former set of instructions were on the web, and are long gone. The latter set of instructions still sound scary (but their bark is truly worse than their bite).

The instructions to install ports on Tiger, however, also look a bit scary. But perhaps it is not too bad. Step one is to run an installer. Step two also is simply to run an installer. Step three requires you to add two lines to a file. Step four is yet another installer (or build from source). Step five is simply one command.

Can you try these and see if they work for you?

If you get past that, you will be all set up to install all sorts of useful packages, not just the latest sqlite3.

Oh, and the reason you got an error on the test program is that it was designed to be run inside the depot directory. Here’s something that is a bit more standalone:

require 'rubygems'
require 'sqlite3'
tempname = "test.sqlite#{3+rand}" 
db = SQLite3::Database.new(tempname)
puts db.execute('select sqlite_version()')
db.close
File.unlink(tempname)

Depot app, adding price posted by Rob Sandusky @ Thu, 22 May 2008 22:41:02 -0000

Rob Sandusky — Thu, 22 May 2008 22:41:02 -0000

Under Tiger (10.4.11):

the “port” command is unrecognized at the UNIX prompt:
sudo: port: command not found

Entering in the second bit of code pasted into a .rb file and running with ruby produces an error:

/usr/local/lib/ruby/gems/1.8/gems/sqlite3-ruby-1.2.1/lib/sqlite3/errors.rb:94:in `check’: could not open database: unable to open database file (SQLite3::CantOpenException) from /usr/local/lib/ruby/gems/1.8/gems/sqlite3-ruby-1.2.1/lib/sqlite3/database.rb:112:in `initialize’ from checkSQLite.rb:5:in `new’ from checkSQLite.rb:5

Did I miss something? (Pardon my dunder-headedness, but am still a bit of a newbie.)

Depot app, adding price posted by Sam Ruby @ Thu, 22 May 2008 22:10:47 -0000

Sam Ruby — Thu, 22 May 2008 22:10:47 -0000

I’m running Leopard, so I don’t have this problem, but from what I gather, the following should work:

sudo port upgrade sqlite3
gem install sqlite-ruby -- --with-sqlite-dir=/opt/local

You can verify which version of sqlite3 Ruby sees with the following code (can be put into a file and executed from the command line, or run in irb or in script/console):

require 'rubygems'
require 'sqlite3'
db = SQLite3::Database.new('db/development.sqlite3')
puts db.execute('select sqlite_version()')

If this works for you, I’ll update the book, and make this code available for easy download.

Depot app, adding price posted by Rob Sandusky @ Thu, 22 May 2008 21:09:16 -0000

Rob Sandusky — Thu, 22 May 2008 21:09:16 -0000

I am running SQLite v. 3.1.3 as well (on OS X Tiger 10.4.11) and am having the same problems as defucius tai notes above.

Is there a simple fix for this yet that works for us newbies who aren’t as familiar with the nuances of UNIX, such as building applications from source?

I seem to be spending more time updating, troubleshooting and searching for answers than learning Rails. (2nd edition seemed much simpler).

Depot app, adding price posted by Ray Schamp @ Fri, 09 May 2008 04:16:14 -0000

Ray Schamp — Fri, 09 May 2008 04:16:14 -0000

The way I fixed it was to download the latest stable release of sqlite3 for 10.4 and build it from the source, which was easy, no snags:

untar the package
make a new directory in the folder that holds the source
cd into that, and run >../configure
Let it go, and then run > make

Note what > sqlite3 --version and >which sqlite3 returns

run > make install and see if > sqlite3 --version returns something different. If it’s the new version, you’re all set. If it’s the old one still, run > which sqlite3, and this should return the location of the new binary. I just replaced my old binary with the new one, and then it worked after that.

Sorry if these instructions are confusing, I’m sure there’s a better way to do this.

-Ray

Depot app, adding price posted by defucius tai @ Fri, 09 May 2008 03:17:19 -0000

defucius tai — Fri, 09 May 2008 03:17:19 -0000

hi, I am having the same problems with the ADD command with sqlite3 3.1.3. and the instruction above with the SWIG and to upgrade sqlite3 on macos 10.4 does not work for me.

Depot app, adding price posted by Dave Thomas @ Sun, 04 May 2008 21:32:42 -0000

Dave Thomas — Sun, 04 May 2008 21:32:42 -0000

Ray:

However, it’s probably easier both for you and for us to log errors in the errata pages—just click the link at foot of each page and you’ll be taken there.

Dave

Depot app, adding price posted by Sam Ruby @ Sun, 04 May 2008 15:57:38 -0000

Sam Ruby — Sun, 04 May 2008 15:57:38 -0000

There will be proofreaders, but any errors that are reported will be addressed, and undoubtedly will make the copyeditors jobs easier.

Depot app, adding price posted by Ray Schamp @ Sun, 04 May 2008 13:42:34 -0000

Ray Schamp — Sun, 04 May 2008 13:42:34 -0000

Someone else will have to confirm this because I already built the latest version of sqlite3 and replaced my old binary with that one. It was pretty painless. Thanks for your help though.

I have found a few strange areas of the beta book as I’m reading it straight through—is it useful for people to post copy errors to this forum, or do you have proofreaders for that?

Depot app, adding price posted by Sam Ruby @ Sun, 04 May 2008 02:18:39 -0000

Sam Ruby — Sun, 04 May 2008 02:18:39 -0000

It looks like support for ALTER TABLE ADD COLUMN was added to SQLite3 in version 3.2.0.

I have found this : On Mac OS X 10.4 Tiger, try uninstalling the gem (sudo gem uninstall sqlite3), then use DarwinPorts to install SWIG (sudo port install swig), then re-install the SQLite3 gem (sudo gem install sqlite3).

If you can verify that this works for you, I’ll update the instructions in the book.

Depot app, adding price posted by Ray Schamp @ Sun, 04 May 2008 00:58:49 -0000

Ray Schamp — Sun, 04 May 2008 00:58:49 -0000

Thanks for responding!

Apparently I am running 3.1.3, so since you have 3.4.2 I will look into upgrading. Here’s what I get:


ray-schamps-computer:~/Sites/ror/depot Ray$ sqlite3 test.db
SQLite version 3.1.3
Enter ".help" for instructions
sqlite> CREATE TABLE products ("id" INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, "title" varchar(255) DEFAULT NULL, "description" varchar(255) DEFAULT NULL, "image_url" varchar(255) DEFAULT NULL, "created_at" datetime DEFAULT NULL, "updated_at" datetime DEFAULT NULL);
sqlite> ALTER TABLE products ADD "price" decimal(8,2) DEFAULT 0;
SQL error: near "ADD": syntax error
sqlite> ALTER TABLE products ADD [price] decimal(8,2) DEFAULT 0;
SQL error: near "ADD": syntax error
sqlite> .exit

After I updated sqlite, your tests work, but rails gives the same error. In my searches online I found a few other people with the similar problems if a program shipped expecting sqlite3 > 3.1, but didn’t warn OS 10.4 users to upgrade. It’s strange that the SQL syntax would have changed between versions…

I will see if rails sees the new version of sqlite after a restart.

Update: no, it was not a restart it needed, but a sudo gem install sqlite3-ruby. Works now!

Thanks a lot,
Ray

Depot app, adding price posted by Sam Ruby @ Sun, 04 May 2008 00:22:31 -0000

Sam Ruby — Sun, 04 May 2008 00:22:31 -0000

Try these commands directly against sqlite3. Can you tell me if they work? What version of sqlite are you running?

$ sqlite3 test.db
SQLite version 3.4.2
Enter ".help" for instructions
sqlite> CREATE TABLE products ("id" INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, "title" varchar(255) DEFAULT NULL, "description" varchar(255) DEFAULT NULL, "image_url" varchar(255) DEFAULT NULL, "created_at" datetime DEFAULT NULL, "updated_at" datetime DEFAULT NULL);
sqlite> ALTER TABLE products ADD "price" decimal(8,2) DEFAULT 0;
sqlite> .exit

Depot app, adding price posted by Ray Schamp @ Sat, 03 May 2008 23:34:53 -0000

Ray Schamp — Sat, 03 May 2008 23:34:53 -0000

Hi,
I’m working my way through the book, I’m at the step where we add a price column, and am getting an error I don’t know what to do with:


ray-schamps-computer:~/Sites/ror/depot Ray$ rake db:migrate        
(in /Users/Ray/Sites/ror/depot)
== 2 AddPriceToProduct: migrating =============================================
-- add_column(:products, :price, :decimal, {:precision=>8, :default=>0, :scale=>2})
rake aborted!
SQLite3::SQLException: near "ADD": syntax error: ALTER TABLE products ADD "price" decimal(8,2) DEFAULT 0

(See full trace by running task with --trace)

After it didn’t work initially, I copied and pasted from the download link:


class AddPriceToProduct < ActiveRecord::Migration
  def self.up
    add_column :products, :price, :decimal,
      :precision => 8, :scale => 2, :default => 0
  end

  def self.down
    remove_column :products, :price
  end
end

Can someone tell me what’s up?

Thanks,
Ray

PS I wish this forum comments box had a preview.

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