I'm trying to write a migration that adds a LONGBLOB column to a table in a MySQL database. I'd like to use LONGBLOB instead of BLOB so that I can store more data in the binary column. The problem is that it adds a BLOB column even though I specify a larger size. Here's the line I'm using to add the column: add_column :db_files, :dat...
Since I didn't get the expected answer on my last question I'll try to simplify and narrow my question: How can I build a dropdown-menu that uses AJAX (no submit-button) to call the show action of a certain controller? The following things are given: Model-Association is Categories HABTM Projects, therefore the dropdown-menu consi...
Trying to use the nested model form in the new rails release candidate. I have this, but it only renders form fields for each existing associated photo object. (Given a form builder f that was created for my parent model object) %h3 Photos - f.fields_for :photos do |photo_form| %p = photo_form.label :caption = photo_form.te...
I've got a gem (will_paginate) that's broken on my version of Oracle. The default paginate_by_sql method in the WillPaginate module is inserting an extra 'AS' into a query and causing it to fail. The code itself is easily fixed, but i'm not sure of the best way to get rails to pick up my change. I don't want to change the code in the ...
Every time I try to run any class from my rails 2.2 app's lib directory using "script/runner -e production ClassName.run" I get the following error: "/usr/lib/ruby/gems/1.8/gems/rails-2.2.2/lib/commands/runner.rb:47: /usr/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/dependencies.rb:89:in `const_missing': uninitialized c...
I use Apache + Passenger to host some Rails applications. Something seems to go in a sleep mode when there is no request for a longer time. It then takes 10-20 seconds for the site to load. Feels like there is something that has to wake up when there have been no requests for a longer time. How can I fix that? I have enough RAM so it sh...
Hey! I iterate through a hash with @lists.each do |list|. I create a div in every cycle that must have an id. I would have created a count variable in PHP to get a definite id. What is the best way to do that in a Rails view? Thank you! ...
I want to display a list with tags plus the number of elements (in my example "Tasks") for each tag. For this purpose I created the following method in my Tag model: def self.find_with_count find_by_sql 'SELECT Tag.name, COUNT(Tag.name) AS taskcount FROM tags AS Tag ...
I am building a mechanism for sortable columns in tables. Every table represents a list of data so I call the database table "lists". Everything except the ordering of the columnpositions works. I want to display the columnpositions ordered by the field "position" but nothing changes even if I remove the :order statement. list.rb :has_...
Hi all, I'd like to render multiline text in Rails, the action looks like: def mutli_text render :text => 'Word1\nWord2' end and I'd expect the response to be : Word1 Word2 unfortunatly I get Word1\nWord2 Any help would be appreciated (The action must render a multiline response to get the autocomplete jquery plugin working) ...
I have a very simple task at hand. If the last time a record was updated has been longer than 15 minutes, display a button. Otherwise, don't display the button. The field is a datetime. My view code: <% if @object.display_button? -%> my button <% end -%> My display button method on that object: def display_button? return fals...
Which gem or plugin should I use for building Myspace applications using Ruby on Rails? ...
My application has the concept of a "Loan". Each loan has a creditor, a debtor, and an amount. From a database perspective, I know that I want the loans table to look something like this: |id|Amount|creditor_id|debtor_id| | 1| 100| 5| 7| Where creditor/debtor ids reference User ids (i.e., the primary key for rows in...
I know this may be a stupid question, but I don't know how to create a ruby function that accepts a hash of parameters. I mean, in Rails I'd like to use a function like this: login_success :msg => "Success!", :gotourl => user_url What is the prototype of a function that accepts this kind of parameters? How do I read them? Thanks in a...
I read the Haml docs where they talk about the pre tag and "preserving whitespace". According to the docs, pre "preserves whitespace" by default and you need to use the ~ operator to output the contents of the tag to get it to render correctly. Following the recommended practice, I have this: %pre ~ @calendar.main_template The outpu...
If I have a statement in Ruby that I want to continue on the next line, normally I would add a backslash at the end of the line like this: print x \ + y But if I have comments on the line, it doesn't work: print x #show x + y # show y Is there a way around this? (Edit: Squeegy's solution is correct and, actually, I knew you could...
I used a backslash to continue a Ruby statement on the next line. print abc \ + def I added a space after the backslash, because I like to blow things up, and, sure enough, I got an error: unexpected $undefined, expecting $end I assume $undefined is a global variable that means anything the compiler sees that it doesn't recognize -...
I am a ruby on rails developer and I have developed several plugins, may be i will be selling them to some web sites and they can use my plugin in there application. But i want to assure that the plugin code once given to them is not used for any other application, if they do so i must know where is it deployed. I just need a way to tra...
I want to share (and keep updated) some base code between my rails projects with git. How can i do? ...
I am providing a web service to be called by external companies. The required data covers several models including person, address etc. I want to validate the received data conditionally based upon some fields within the request. I will eventually have many differing sets of validation data, although currently I only have one and I am ab...