similar to: whats the right way to avoid this nil error..

Right now I have a simple form hooked up. Now that the form is smooth and functional, I want to add a feature that I''m not sure how to implement. After a user modifies a form, I''d like to have a visual cue appear somewhere to show that the form has been changed and needs to be saved. It could be a red div at the top of the screen - anything - it is doesn''t matter. Just

I tried to install Rails 3 Beta in my snow.leopard machine using the command below: (w/ sudo if it requires) gem install tzinfo builder memcache-client rack rack-test rack-mount erubis mail text-format thor bundler i18n unfortunately after 12 gems installed i got an error regarding builder-2.1.2 12 gems installed Installing ri documentation for tzinfo-0.3.22... Installing ri documentation for

Experts, have you figure it out with autocomplete to pass as array objects? still i''m finding out the way to figure. :( regards, Bala --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to

In Depot, the demo application in the the Agile book, actions that modify the model such as add_to_cart redirect to another action that has a clear view role, like index, or show_cart, instead of generating the view themselves. This uses an HTTP redirect that goes to the client and returns. Is this an idiomatic way to design the flow in Rails? -- fxn

I have a bunch of queries to compute some counters, like find_by_sql(<<-SQL SELECT p.*, c.nfavourites FROM people p, ( SELECT fp.person_id, COUNT(fp.user_id) as nfavourites FROM favourite_people fp, users u WHERE fp.user_id = u.id AND u.cluster = ''#{in_cluster_of_user.cluster}'' GROUP BY fp.person_id ) as c WHERE

I have a new @offer that needs to generate a document if saved. But that''s all or nothing: transaction do @offer.save! generate_document end # handle exceptions if needed If save! fails everything is fine, but if generate_document raises an exception @offer is left as a model with timestamps, id, which is not a new_record? anymore (though the database was

I left ":memory:" in database.yml for testing and the most simple tests in the Agile book do not work (see trace below for test_truth). Since that''s what comes with the distributed database.yml I suppose it''s me doing something wrong. Did someone get SQLite ":memory:" working? How does it grab the schema? -- fxn % rake test_units (in

So after successfully getting the test SQLite db to run from memory, I tried running some tests but found that somewhere in the schema translation from Postgres (my devel database) and SQLite Rails fails to properly set the ''id'' column, which breaks all kinds of things. Take as an example my ''users'' table. In Postgres the schema is (generated with pgAdmin III):

Hi, I just wanted to update my Rails installation with "sudo gem update rails" but I get this error: Updating installed gems... Bulk updating Gem source index for: http://gems.rubyforge.org Attempting remote update of rails Install required dependency activesupport? [Yn] y Install required dependency activerecord? [Yn] y ERROR: While executing gem ... (OpenURI::HTTPError) 404

The new rescue_from in edge rails seems to conflict with ActionWebService, which I need for various other purposes. When I define, for example (with AWS gem installed): <b>rescue_from ActionController::RoutingError, :with => :page_not_found</b> I get the exception: <b>uninitialized constant ActionWebService::Dispatcher::ActionController::Base</b> OK, so AWS

I am following the rails book, and arrived to the section about testing. The test database is configured as: test: adapter: sqlite3 database: ":memory:" and I get this error with the simple product test: % ruby test/unit/product_test.rb Loaded suite test/unit/product_test Started E/usr/local/lib/ruby/gems/1.8/gems/sqlite3-ruby-1.1.0/lib/sqlite3/ errors.rb:94:in

I read in the instructions of Tracks that "upgrading via the rake migrate command is quite a bit more tricky currently with SQLite and SQLite3". Is there any gotcha regarding migrations and SQLite3? -- fxn

okay... i have two models employee - id - username order - id - number - created_by - approved_by now created_by and approved_by are both id''s of employees. in most cases, two different employees. currently i do something like //controller @open_orders = Order.open_orders //model def self.open_orders find(:all, :conditions => [''is_open = ?'', true],

A view display.rhtml sees no controller state variables set in the corresponding display action. Why? -- fxn

Hello, I felt annoyed enough when having to redirect user back to their previous location in a hackish way that I wrote this plugin. It avoids storing POST and Ajax request. It also has a facility to specify actions not to store in the history. If you are interested, it''s there: http://blog.cosinux.org/pages/rails-history See you all, Damien -- Damien MERENNE

Hello, I am trying to get a surface plot of a data set that looks like the following, 1 2 5.6 5 9 2.4 9 8 9.8 ... to (60,000 rows down) From my homework, the persp function only works with evenly spaced data points with the z data beeing in a matrix. my data is not in that format. the wireframe fxn gives me an error, no applicable method for "wireframe" the

I would like to embed my login form on my app''s home page. What''s the best way to render the login action of member controller from another action? Thanks Frank --------------------------------- Relax. Yahoo! Mail virus scanning helps detect nasty viruses! -------------- next part -------------- An HTML attachment was scrubbed... URL:

friends of the int-arweb. what does this mean: (in bold) ActiveRecord::StatementInvalid in Contact#create SQLite3::SQLException: SQL logic error or missing database: INSERT INTO contacts Context: this happened after I had finished setting up RoR as per the tutorial at http://maczealots.com/tutorials/ruby-on-rails/ the database, is like, there. is there a nice ruby command like deal to

I have an application with 15 migrations under version control. In a Mac and and in a Windows, a rake migrate from scratch runs them all just fine. But in a different Windows machine rake migrate stops after migration 3 for no apparent reason. --trace seems normal. No error is reported. Both Windows are XP SP2. They all have the same svn revision and Rails-related software, database is

There is a solution to use helpers from controllers ? I have an error : |undefined method `content_tag''| class ApplicationController < ActionController::Base def test return content_tag("a","test") end end