Using Ruby on Rails -- No database update

Hi, All,
I'm trying to follow the instructions in the article called:
Using Ruby on Rails for Web Development on Mac OS X
I've installed everything according to the instructions and everything seems to work fine. However, I'm having a problem with the "rake migrate" command.
When I run it, it should add an accounts table, but it isn't adding the table. Here is the results of running the command:
[Daves-Computer:~/expenses] davep% rake migrate
(in /Users/davep/expenses)
[Daves-Computer:~/expenses] davep%
When, however, I run the command to revert to the previous version I get this:
[Daves-Computer:~/expenses] davep% rake migrate VERSION=0
(in /Users/davep/expenses)
== Accounts: reverting -- drop_table(:accounts)
rake aborted!
Mysql::Error: Unknown table 'accounts': DROP TABLE accounts
(See full trace by running task with --trace)
[Daves-Computer:~/expenses] davep%
So it looks to me like I'm accessing the database alright, but I'm not updating it with the new table.
Any ideas? If i'm being obtuse, let me know and I'll try to get you more details.
Thanks,
Dave

Hello Deepak,
Thanks a lot for this great content.
Feel feel to contact OTN editors if you want to publish new articles on Oracle Tech site.
Tugdual Grall

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A Create-Read-Update-Delete application may be developed with Ruby on Rails and Oracle database.
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Hello Deepak,
Thanks a lot for this great content.
Feel feel to contact OTN editors if you want to publish new articles on Oracle Tech site.
Tugdual Grall

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thanks in advance
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okay, that helped. Here's what I get:
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comp_err mysql_zap
makesharedlibdistribution mysqlaccess
makewin_bindist mysqlaccess.conf
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mysql_config mysqlhotcopy
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mysqlcreate_systemtables mysqlmanager
mysqlexplainlog mysqlshow
mysqlfindrows mysqltest
mysqlfixextensions mysqltestmanager
mysqlfix_privilegetables mysqltestmanager-pwgen
mysqlsecureinstallation mysqltestmanagerc
mysql_setpermission perror
mysql_tableinfo replace
mysqltzinfo_tosql resolvestackdump
mysql_upgrade resolveip
mysqlupgradeshell safe_mysqld
mysql_waitpid
erik-petersons-computer:/usr/local/mysql/bin erikpeterson$
How would I create a new database from here?

[SOLVED]Ruby on Rails won't run with apache/passenger

Hi I want to run Redmine, a Ruby on Rails application, on a personal server using MariaDB as the database and Apache with the Phusion Passenger module as the application platform. So far I am able to run Redmine with the default WeBrick server, but if I try to run it via Apache (http://192.168.1.5/redmine) I just get the directory index of /usr/share/webapps/redmine. I've been running various php webapps using this apache installation without issues but my unfamiliarity with Ruby on Rails makes me unsure how to fix this. If I create a Ruby on Rails test application as described at https://wiki.archlinux.org/index.php/Ru … figuration I get the same issue.
Using the arch wiki articles on Ruby on Rails and Redmine, This is basically how I installed things:
$ yaourt -S ruby1.9 rubygems1.9 nodejs redmine
# gem-1.9 install rails
# gem-1.9 install passenger
/opt/ruby-1-9/ and subfolders ended up having no read/exexute permissions for 'other', probably because of my umask settings, so I changed the permissions, also because apache runs as user/group 'apache'.
Ran the script that installs the passenger apache module:
# /opt/ruby1.9/bin/passenger-install-apache2-module
added to httpd.conf:
LoadModule passenger_module /opt/ruby1.9/lib/ruby/gems/1.9.1/gems/passenger-4.0.5/libout/apache2/mod_passenger.so
PassengerRoot /opt/ruby1.9/lib/ruby/gems/1.9.1/gems/passenger-4.0.5
PassengerDefaultRuby /opt/ruby1.9/bin/ruby
ServerName arch-server
DocumentRoot /usr/share/webapps
<Directory "/usr/share/webapps">
# This relaxes Apache security settings.
AllowOverride all
Order allow,deny
Allow from all
# MultiViews must be turned off.
Options -MultiViews
</Directory>
I checked if the passenger module is loaded, and judging from /var/log/httpd/error_log that seems the case:
[ 2013-07-03 22:52:22.8947 28902/b7407700 agents/Watchdog/Main.cpp:440 ]: Options: { 'analytics_log_user' => 'nobody', 'default_group' => 'nobody', 'default_python' => 'python', 'default_ruby' => '/opt/ruby1.9/bin/ruby', 'default_user' => 'nobody', 'log_level' => '0', 'max_instances_per_app' => '0', 'max_pool_size' => '6', 'passenger_root' => '/opt/ruby1.9/lib/ruby/gems/1.9.1/gems/passenger-4.0.5', 'pool_idle_time' => '300', 'temp_dir' => '/tmp', 'union_station_gateway_address' => 'gateway.unionstationapp.com', 'union_station_gateway_port' => '443', 'user_switching' => 'true', 'web_server_pid' => '28901', 'web_server_type' => 'apache', 'web_server_worker_gid' => '1001', 'web_server_worker_uid' => '1006' }
[ 2013-07-03 22:52:22.9120 28905/b73bd700 agents/HelperAgent/Main.cpp:555 ]: PassengerHelperAgent online, listening at unix:/tmp/passenger.1.0.28901/generation-0/request
[ 2013-07-03 22:52:22.9262 28902/b7407700 agents/Watchdog/Main.cpp:564 ]: All Phusion Passenger agents started!
[ 2013-07-03 22:52:22.9266 28910/b71dd700 agents/LoggingAgent/Main.cpp:271 ]: PassengerLoggingAgent online, listening at unix:/tmp/passenger.1.0.28901/generation-0/logging
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I followed the wiki on redmine (https://wiki.archlinux.org/index.php/Redmine), chose to use "bundle install" to install the required gems with only a 'production' environment. What worried me is that those gems are now in /root/.gems while the webserver runs as user 'apache'.
I can run Redmine at 192.168.1.5:3000 without errors using:
# ruby script/rails server webrick -e production
But if I kill it and try via apache http://192.168.1.5/redmine I get a directory content listing.
Last edited by rwd (2013-07-04 21:00:10)

Thanks markocz, my use of sub-url was indeed the problem. With help from the linked article I did the following:
# mkdir /usr/share/webapps/phusion-passenger/
# ln -s /usr/share/webapps/redmine/public /usr/share/webapps/phusion-passenger/redmine
# chown -R root:http /usr/share/webapps/
# chmod -R g+rx /usr/share/webapps/
httpd.conf now looks like this:
LoadModule passenger_module /opt/ruby1.9/lib/ruby/gems/1.9.1/gems/passenger-4.0.5/libout/apache2/mod_passenger.so
PassengerRoot /opt/ruby1.9/lib/ruby/gems/1.9.1/gems/passenger-4.0.5
PassengerDefaultRuby /opt/ruby1.9/bin/ruby
ServerName arch-server
DocumentRoot /usr/share/webapps/phusion-passenger
<Directory "/usr/share/webapps/phusion-passenger">
# This relaxes Apache security settings.
AllowOverride all
Order allow,deny
Allow from all
# MultiViews must be turned off.
Options +FollowSymLinks
</Directory>
RailsBaseURI /redmine
<Directory "/usr/share/webapps/phusion-passenger/redmine">
Options -MultiViews
</Directory>
Redmine now works via passenger.
Last edited by rwd (2013-07-04 20:59:40)

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I have tried the Apple tutorial and Adam Blackbourne's book and website and still cannot get a functional environment started so that I can develop using Ruby on Rails. I get Ruby installed, Textmate installed, and then seem to get bogged down with Textmate and sql. I seem not to have mysql properly installed but I can't figure out what's wrong. Both these sources above refer to some great package call Locomotive that is "the golden path..." but it has been withdrawn by its author. Any ideas on how to proceed? What sources are available?

Hi,
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I have been running Rails 2.0.2 on Leopard client which I loaded following the tutorial (once I loaded Xcode 3 on the client as well). Since Rails 2.0 comes with sqlite3 as its default database, you can be up and running on 10.5 client in short order and save your mysql for deployment. In my case I also have 10.5 Server and have been testing with Rails and reverse proxies while operating in development mode (with sqlite3). When I start porting over to Server, mysql is a service on server and has a unique configuration. So the tutorial may not be applicable if you are using it with a mysql standard type install. You can read about the server install environment of mysql at
http://docs.info.apple.com/article.html?path=ServerAdmin/10.5/en/c6ws25.html
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Hope this helps,
Harry

Ruby on Rails + RFC

Is there a way to call RFC using Ruby on Rails?!
I want to list all purchase order waiting approval calling BAPI_PO_GET_LIST. And also I want to use the approval BAPI for both PO and Requests.
Thanks in advance,
Guilherme Costa

All,
This is the code I've used for testing:
require 'sapnwrfc'
start = Time.now
startGlobal = Time.now
# Connect SAP
print "[" + (Time.now - startGlobal).to_s + "s][" + (Time.now - start).to_s + "s] Connecting SAP...\n"
rfc = SAPNW::RFC::Connection.new(:ashost => "spsapbw", :sysnr => "60", :client => "210", :user => "<YOUR_USER>", :passwd => "<YOUR_PASSWORD>", :lang => "PT", :destination => "RC3", :trace => "0")
print "[" + (Time.now - startGlobal).to_s + "s][" + (Time.now - start).to_s + "s] SAP is connected!\n"
start = Time.now
# Get function information
print "[" + (Time.now - startGlobal).to_s + "s][" + (Time.now - start).to_s + "s] Getting function...\n"
fun = rfc.discover("BAPI_REQUISITION_RELEASE_GEN")
print "[" + (Time.now - startGlobal).to_s + "s][" + (Time.now - start).to_s + "s] Function ready!\n"
start = Time.now
times = 10
for i in (1..times)
    # Create a function call
    funCall = fun.new_function_call
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    funCall.NUMBER = i.to_s
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    funCall.invoke
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    #print "TYPE: " + funCall.RETURN[0].values_at("TYPE")[0] + "\n"
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end
print "[" + (Time.now - startGlobal).to_s + "s][" + (Time.now - start).to_s + "s] Function called " + times.to_s + " times!\n"
print "[" + (Time.now - startGlobal).to_s + "s] Done!\n"
Best regards,
Guilherme Costa

Mixing up Ruby on Rails & ABAP

Hello,
last week I bought a German magazin called "XI" (http://www.heise.de/ix/inhalt.html ).
With Ruby on Rails 3.0 the framwork was completly rewritten and will become the future web development framework.
Is it possible to use Ruby on Rails as Web Frontend where the business logic will be developed in ABAP OO?
Regards & Thanks,
Guido Brune

Hi Mr. X,
follow these steps: (as root)
1) install rubygems:
pacman -S rubygems
2) install rails:
gem install rails
3) install sqlite3 and ruby-slite3:
pacman -S sqlite3 ruby-sqlite3
(if you prefer you can install mysql)
4) install mongrel (it's faster than webrick)
gem install mongrel
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Enjoy
Last edited by luca (2008-06-12 10:54:30)

Ruby on Rails with Oracle Database

I am starting a new project that needs to produce dynamic charts and data reports on the web. I am a Java programmer and new to databases. I have heard good things about Ruby on Rails but cannot get it to work with Mac OS X and our Oracle database. I've read many, many forum posts about the lack of an Intel Client from Oracle, but would really like to know how if its possible to
A) Get Ruby on Rails to read from an Oracle database AND
B) Find out how to configure Locomotive (the Ruby GUI I'm using) to connect to the Oracle database.
Thanks for any help!

Hello Deepak,
Thanks a lot for this great content.
Feel feel to contact OTN editors if you want to publish new articles on Oracle Tech site.
Tugdual Grall

Ajax with Ruby on Rails and Oracle Database

Ajax may be used with Ruby on Rails and Oracle database.
http://www.ftponline.com/channels/java/2007_02/dvohra/

okay, that helped. Here's what I get:
erik-petersons-computer:/usr/local/mysql/bin erikpeterson$ ls
comp_err mysql_zap
makesharedlibdistribution mysqlaccess
makewin_bindist mysqlaccess.conf
makewin_srcdistribution mysqladmin
msql2mysql mysqlbinlog
myprintdefaults mysqlbug
myisam_ftdump mysqlcheck
myisamchk mysqld
myisamlog mysqld_multi
myisampack mysqld_safe
mysql mysqldump
mysqlclienttest mysqldumpslow
mysql_config mysqlhotcopy
mysqlconvert_tableformat mysqlimport
mysqlcreate_systemtables mysqlmanager
mysqlexplainlog mysqlshow
mysqlfindrows mysqltest
mysqlfixextensions mysqltestmanager
mysqlfix_privilegetables mysqltestmanager-pwgen
mysqlsecureinstallation mysqltestmanagerc
mysql_setpermission perror
mysql_tableinfo replace
mysqltzinfo_tosql resolvestackdump
mysql_upgrade resolveip
mysqlupgradeshell safe_mysqld
mysql_waitpid
erik-petersons-computer:/usr/local/mysql/bin erikpeterson$
How would I create a new database from here?

Ruby on Rails FUBAR after gem update? Aptana and NetBeans no work now!!

After doing an gem update --system it seems that the whole out-of-box Ruby and Ruby on Rails experience in Leopard goes way south.
I first had issues just trying to run the rails command:
<pre>
Adenthir:Workspace nicholas$ rails dummy
/Library/Ruby/Site/1.8/rubygems.rb:304:in `reportactivateerror': Could not find RubyGem rails (> 0) (Gem::LoadError)
from /Library/Ruby/Site/1.8/rubygems.rb:238:in `activate'
from /Library/Ruby/Site/1.8/rubygems.rb:76:in `activegem_withoptions'
from /Library/Ruby/Site/1.8/rubygems.rb:50:in `gem'
from /usr/bin/rails:15
</pre>
I found that the directory path(s) of the gem repositories which were:
<pre>
\["/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/gems/1.8" , "/Library/Ruby/Gems/1.8"]
</pre>
had become simply:
<pre>
\["/Library/Ruby/Gems"]
</pre>
So I added GEM_HOME and GEM_PATH to my .profile, and this works for when I'm in the shell.
However when I run Aptana or Netbeans it complains about the environment and not being able to find the rails 1.2.3 gem. It seems that not all was yet fixed by adding the paths to my .profile to help clear up the confusion about the missing gem repositories.
How do you get it so that applications that are not run from the shell eg. Aptana or NetBeans can see the same path as I'm getting in the shell? (My assumption is that the reason they error is because they don't use the .profile shell settings.) I'm not quite sure how to set environment variables for the Mac OS itself (other than the shell sessions). And I am not going to take "just run your apps using shell commands to start them" as an answer!
All my rails/ruby stuff was working flawlessly in 10.4 ...sigh.
Help!

Okay - I think I have the path situation sorted out. In order to get applications like NetBeans or Aptana to recognize the gem repositories after doing a gem update --system command you need to create a file ~/.MacOSX/environment.plist (it isn't there by default so you'll need to make one).
I used the plist editor tool that comes with XCode's installation, but I imagine any text editor will be sufficient. You will want to add the following to restore your paths for RubyGem:
<pre>
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>GEM_HOME</key>
<string>/Library/Ruby/Gems/1.8</string>
<key>GEM_PATH</key>
<string>/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/gem s/1.8</string>
</dict>
</plist>
</pre>
That seems to of fixed the confusion that NetBeans was having for me as to where to find the gem for rails. Everything (so far) seem to be back to normal.
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AUXILIARY database update using full backup from target database

Hi,
I am now facing the problem with how to implement AUXILIARY database update to be consistent with the target database during a certain period (a week). I did a fully backup on our target database everyday using rman. I know it is possible to use expdp to realize it but i want to use the current fully backup to do it. Does anybody has idea or experience with that? Thanks in advance!
Regards,
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That's OK. If you don't use RMAN to clone your database. You can create a database just using the cold backup of the primary database simply.
Important things are
1) you must catalog all datafiles as image copy level 0 in the cloned database
RMAN> connect catalog rman/rman@rcvcat (in host 1)
RMAN> connect target sys/manager@clonedb (in host 2)
RMAN> catalog datafilecopy
'/oracle/oradata/CLONE/datafile/abc.dbf',
'/oracle/oradata/CLONE/datafile/def.dbf',
'/oracle/oradata/CLONE/datafile/ghi.dbf'
level 0 tag 'CLONE';
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RMAN> connect catalog rman/rman@rcvcat (in host 1)
RMAN> connect target sys/manager@prod (in host 3)
RMAN> backup incremental level 1 tag 'CLONE' for recover of copy with tag 'CLONE' database format '/backup/%u';
3) Copy the newly created incrementals (in host 3) to the clone database site (host 2). Make sure the directory must be exactly same.
$ rcp /backup/<incr_backup> /backup/
-- rcp <the loc of a incremental in host 3> <the loc of a incremental in host 2>
4) Apply incrementals to update the clone database. Make sure you provide the tag you specified.
RMAN> connect catalog rman/rman@rcvcat
RMAN> connect target sys/manager@clone
RMAN> recover copy of database with tag 'CLONE';
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RMAN> change copy like '/oracle/oradata/CLONE/datafile/%' uncatalog;
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Using Ruby in place of Actionscript

I love flash (design tools, stage / layout concepts, etc.),
but I hate actionscript. I've been a programmer for about 10 years
now, programming in everything from C to C#, java, php, perl, ruby,
and actionscript. Actionscript is by far my least favorite of the
group. It is a clumsy language (just have a look at the way
actionscript 2 handled method closures on callbacks) and I'd prefer
to use another scripting language in place of it for my flash
development. Ruby would be an excellent replacement, offering
everything actionscript has to offer (object oriented, event
handling, etc.) with a number of additional features that come
through ruby core and the ruby gems (excellent date and time
libraries, database libraries, file handling libraries, etc.).
Does anyone with an in-depth knowledge of actionscript and
flash know what it would take to achieve some sort of common
language API that would allow such a substitution? If the ruby on
rails guys came across a solution allowing them to leverage the
benefits of ruby (superior language to actionscript) with the
benefits of the flash platform (superior visual control to
html/ajax), flash would be unstoppable.

ryanmohr,
> The actionscript developers seem to enjoy leaving the
> core libs unfinished so others can produce utility
classes
> to finish the job they should have done on their own.
Again, fair enough. :) On the other hand, regarding the
missing String
manipulation utilities ...
> but why not just offer it built in? It would take what,
a
> full five minutes for them to write?
... hey, if all it takes is five minutes of someone's time,
why not craft
together a utils library and share it? You could make a
positive
difference. :) In that line of thinking, it's not even the
size that
matters. Moses Gunesh, for example, put together an elaborate
and popular
tweening engine, Fuse (
http://www.mosessupposes.com/Fuse/),
and shared the
wealth. Note: by proximity to a casual statement on a String
utils class,
I risk implying that Fuse is just a five-minute exercise in
simplicity,
which is not *at all* the case. I'm only pointing out that
good libraries
can make a helpful difference in people's workaday lives. If
the
functionality you want isn't available, roll your own! :)
> You are correct that there is no arguing taste, but if
you
> took the time to learn ruby well you would come back
> to actionscript very disappointed.
Even if I do "appear to be very knowledgable ... [on] the
inner-working
of Flash itself," I don't claim to know much on the
inner-working of Adobe.
I guess it depends on one's point of view -- and to my point
of view,
ActionScript keeps getting better and better.
I think there's more than just taste to consider. For the
type of
programming I like to do -- where the end result is (ideally,
to me) making
cartoon characters move in response to user input, Ruby might
leave me dry
(Flash is strongly suited to vector graphics, sound effects,
video footage,
etc.). My multimedia career started with Macromedia Director,
whose
programming language is Lingo, a very AppleScript-like
language. My guess
is that you wouldn't much care for it at all. From there, I
moved,
reluctantly at first, to Flash, where my programming skill
grew in-step with
the increasing maturity of ActionScript. There was a time,
essentially AS1,
when ActionScript was practically identical to JavaScript,
and I enjoyed
getting to know both. JavaScript led me to regular
expressions, which
fascinated me for fully two years before I got any good at
it. I'm pleased
as punch that AS3 supports regex natively. AS2 brought the
"class"
keyword -- and OOP in general -- to the forefront of my mind,
which led to
brief excursions into Java and C#. I've played a bit with
Python, PHP, and
a handful of other languages. To a certain extent,
programming is
programming: it's the syntax that changes, not the challenge
and fun of
problem solving within a given set of constraints (like the
language
itself). In that regard, it doesn't really matter to me what
language I'm
using, so much as a general answer to the question, "Does
this platform
allow me -- encourage me -- to participate in the kinds of
projects I like?"
Even if I found another language, such as Ruby, more
convenient, it might
not facilitate the sorts of projects I enjoy. To go out on a
limb and make
an extreme example, Ruby, for all its elegance, wouldn't help
me if I had a
passion for programming LCD wristwatches. Because I "grew up"
on
ActionScript, I also have something of a nostalgia for its
particular
quirks. I personally happen to find ActionScript more
palatable than
Lingo -- so I can see some of your points.
> The more I get to know actionscript 3 in detail the more
> I'm convinced those that adamantly support it just don't
> know any better.
I don't know if you consider me one of those who adamantly
supports AS3
or not, and it doesn't really matter. You yourself said that
ActionScript
isn't a bad language -- only that Ruby, in your estimation,
is that much
better. Well, good! I'm glad you've found a language that
pleases your
palate. :) If you were to change your mind and decide, after
all, that
ActionScript actually is a "bad language," it wouldn't be any
skin off my
nose. See, if I step away from ActionScript toward something
else, it means
I'm stepping away from a platform that has continued to
intrigue me for
eight years. If ActionScript were still where it was in the
Flash 4 days,
I'd probably be whistling a different tune. ;)
David Stiller
Adobe Community Expert
Dev blog,
http://www.quip.net/blog/
"Luck is the residue of good design."

Ruby on Rails and Dreamweaver 8

There were, at one time, Ruby on Rails extensions for
DreamweaverMX, created by Rob Cameron and referred to as
"RubyWeaver". Apparently, *those were the days*, because you can't
find them any where now!
Does anyone know how to use RonR with Dreamweaver? I am just
starting out. Too poor for ColdFusion and Flex. My only other
alternative, because I am on a Mac, is to use PHP - but I thought
RonR was better and faster at creating database-backed web
applications.
Thanks for taking the time to read this!

There were, at one time, Ruby on Rails extensions for
DreamweaverMX, created by Rob Cameron and referred to as
"RubyWeaver". Apparently, *those were the days*, because you can't
find them any where now!
Does anyone know how to use RonR with Dreamweaver? I am just
starting out. Too poor for ColdFusion and Flex. My only other
alternative, because I am on a Mac, is to use PHP - but I thought
RonR was better and faster at creating database-backed web
applications.
Thanks for taking the time to read this!

Ruby on Rails

I tried to follow the Ruby on Rails example post by Apple but it simply didn't work. I got the server started but the SQL migration didn't work. Has anybody made this work or been able to get through the "tutorial?"

Thanks. It is hard to describe exactly what doesn't work, but I will try. I get to the point in the tutorial where the server is up and running, I get Textmate running, but I keep having trouble with MySQL. I have installed MySQL 5.0.5 but at one point I got a screen that said I was using SQLite3. I think that came with some Apple package. I don't know how to "look at that particular section of the config/database.yml file." Nor how to modify it per the tutorial. "mysqladmin" commands generate an error message saying they can't be found. It seems that I have environmental issues. Of course, the "golden path installation guide," Locomotive, has been removed from circulation. So, I think that the tutorial assumes things will be done for you by installing Locomotive and that can't happen. I can't even get to the sample application.
Does this help in analyzing my problem?

Using Ruby on Rails -- No database update

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