# Rails **URL:** https://www.ruby-forum.com/c/ruby-on-rails/6.md?page=1409 [Latest](https://www.ruby-forum.com/latest.md) · [Categories](https://www.ruby-forum.com/categories.md) · [Tags](https://www.ruby-forum.com/tags.md) **Page:** 1410 --- ## [Single avatar upload: attachment\_fu or file\_column?](https://www.ruby-forum.com/t/single-avatar-upload-attachment-fu-or-file-column/133946)
**Author:** [@chunkyslink](https://www.ruby-forum.com/u/chunkyslink)\ **Replies:** 2\ **Last updated:** [April 5, 2008, 11:21pm UTC](https://www.ruby-forum.com/t/single-avatar-upload-attachment-fu-or-file-column/133946 "2008-04-05T23:21:13Z")
I’m struggling with a single avatar upload system for a user. I’ve hit brick walls with two different routes, so I’d appreciate pointers on choosing the right solution and fixing it: First attempt: attachment\_fu (via … --- ## [Installing Instant Rails over existing Ruby Installation](https://www.ruby-forum.com/t/installing-instant-rails-over-existing-ruby-installation/133970)
**Author:** [@alexd](https://www.ruby-forum.com/u/alexd)\ **Replies:** 0\ **Last updated:** [April 5, 2008, 10:01pm UTC](https://www.ruby-forum.com/t/installing-instant-rails-over-existing-ruby-installation/133970 "2008-04-05T22:01:47Z")
I just installed Instant Rails on my Windows machine. I previously had Ruby already installed, and now I seem to have two copies of Ruby, one in the Instant Rails folder, and my original one in the Ruby folder. My q… --- ## [Array Count](https://www.ruby-forum.com/t/array-count/133931)
**Author:** [@isotope13](https://www.ruby-forum.com/u/isotope13)\ **Replies:** 10\ **Last updated:** [April 5, 2008, 9:13pm UTC](https://www.ruby-forum.com/t/array-count/133931 "2008-04-05T21:13:16Z")
I have an array that contains the following: 114,151,157,151,10,12,14,151,157,10 I need to count how many instances of each item show up in this string. In this case: 114 shows up 1 time 151 shows up 3 times 157 sh… --- ## [Delay before Field.focus?](https://www.ruby-forum.com/t/delay-before-field-focus/133960)
**Author:** [@vapor](https://www.ruby-forum.com/u/vapor)\ **Replies:** 2\ **Last updated:** [April 5, 2008, 8:34pm UTC](https://www.ruby-forum.com/t/delay-before-field-focus/133960 "2008-04-05T20:34:27Z")
I have two inline effects… Effect.BlindDown(‘form’, {duration:0.2}), Field.focus(‘user\_name’) Now, in IE7, field wont get focused because form element is not visible at the time execution. How can I delay second (Fie… --- ## [How can hide a div?](https://www.ruby-forum.com/t/how-can-hide-a-div/133953)
**Author:** [@captaffy](https://www.ruby-forum.com/u/captaffy)\ **Replies:** 3\ **Last updated:** [April 5, 2008, 7:10pm UTC](https://www.ruby-forum.com/t/how-can-hide-a-div/133953 "2008-04-05T19:10:24Z")
I have a form wich I want to show it only if I clic on a link. I want that form, with div=“related”, to appear with the Appear effect of scriptaculous. This form alreday has some AJAX. --- ## [Urgent help needed! "uninitialized constant" error](https://www.ruby-forum.com/t/urgent-help-needed-uninitialized-constant-error/133925)
**Author:** [@nasir](https://www.ruby-forum.com/u/nasir)\ **Replies:** 1\ **Last updated:** [April 5, 2008, 6:57pm UTC](https://www.ruby-forum.com/t/urgent-help-needed-uninitialized-constant-error/133925 "2008-04-05T18:57:31Z")
I need a hint on what could be causing the following error message: NameError in Project areasController#destroy uninitialized constant ProjectArea::KeyAspect D:/Ruby/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/li… --- ## [How do you model an article that has an author and readers w/ the same User model?](https://www.ruby-forum.com/t/how-do-you-model-an-article-that-has-an-author-and-readers-w-the-same-user-model/133913)
**Author:** [@frank\_programmer](https://www.ruby-forum.com/u/frank_programmer)\ **Replies:** 2\ **Last updated:** [April 5, 2008, 6:52pm UTC](https://www.ruby-forum.com/t/how-do-you-model-an-article-that-has-an-author-and-readers-w-the-same-user-model/133913 "2008-04-05T18:52:51Z")
Hi, I am stuck trying to figure out how to model this. I have a user model and an article model. It is easy enough to say the user has many articles and the article has one user. class User \< ActiveRecord::Base has… --- ## [Ruport - How to set page size?](https://www.ruby-forum.com/t/ruport-how-to-set-page-size/133899)
**Author:** [@Cassiano\_R](https://www.ruby-forum.com/u/Cassiano_R)\ **Replies:** 1\ **Last updated:** [April 5, 2008, 6:41pm UTC](https://www.ruby-forum.com/t/ruport-how-to-set-page-size/133899 "2008-04-05T18:41:41Z")
Hi I’m using Ruport to generate some pdf reports. Ruport uses PDF::Writer to render pdf files. I need generate report in A4 page format and by default, ruport generate pages in Letter format. How I can change this s… --- ## [Editable drop down menu](https://www.ruby-forum.com/t/editable-drop-down-menu/133809)
**Author:** [@pimeamark](https://www.ruby-forum.com/u/pimeamark)\ **Replies:** 3\ **Last updated:** [April 5, 2008, 6:35pm UTC](https://www.ruby-forum.com/t/editable-drop-down-menu/133809 "2008-04-05T18:35:14Z")
Does anyone know if there’s a method in rails to do this? Basically I want there to be a drop down menu with items to chose from, but also the ability to enter whatever you want in the box. I just dont know offhand if… --- ## [Assigning Show method to a field on Index/list views](https://www.ruby-forum.com/t/assigning-show-method-to-a-field-on-index-list-views/133936)
**Author:** [@Colleen\_RobledoS\_ML](https://www.ruby-forum.com/u/Colleen_RobledoS_ML)\ **Replies:** 2\ **Last updated:** [April 5, 2008, 6:31pm UTC](https://www.ruby-forum.com/t/assigning-show-method-to-a-field-on-index-list-views/133936 "2008-04-05T18:31:05Z")
Hello, I’m still very new to learning Rails (I’m better with Grails). On the Index/List views, how can I assign he Show method to a field in the table(making that particular table field the “clickable” link to the as… --- ## [Design question REST join table](https://www.ruby-forum.com/t/design-question-rest-join-table/133915)
**Author:** [@casper\_the\_ghost](https://www.ruby-forum.com/u/casper_the_ghost)\ **Replies:** 2\ **Last updated:** [April 5, 2008, 5:51pm UTC](https://www.ruby-forum.com/t/design-question-rest-join-table/133915 "2008-04-05T17:51:34Z")
Hello, I’m currently designing a rails application using REST principles. I have an employee table, subservices table, and employees\_subservices join table. Should I create a resource called employee\_subservices or … --- ## [Help with Json1.1.2.gem error gem\_make.out?](https://www.ruby-forum.com/t/help-with-json1-1-2-gem-error-gem-make-out/133875)
**Author:** [@yetanothergeek](https://www.ruby-forum.com/u/yetanothergeek)\ **Replies:** 3\ **Last updated:** [April 5, 2008, 5:45pm UTC](https://www.ruby-forum.com/t/help-with-json1-1-2-gem-error-gem-make-out/133875 "2008-04-05T17:45:07Z")
Hi, Could someone please point me in the right direction, I need the json gem for an apps I am working on, I’m new to RoR been working with it for around 4 weeks now and have been given a requirements list for the g… --- ## [Dynamic select list @www.stonemind.net](https://www.ruby-forum.com/t/dynamic-select-list-www-stonemind-net/133954)
**Author:** [@drorchung](https://www.ruby-forum.com/u/drorchung)\ **Replies:** 5\ **Last updated:** [April 5, 2008, 5:07pm UTC](https://www.ruby-forum.com/t/dynamic-select-list-www-stonemind-net/133954 "2008-04-05T17:07:58Z")
Hi, Has anyone read the web page by “Adding Dynamic Select Lists to Resource Scaffolding in Rails” at by Adam Smith. The logic is easy to follow. The codes are easy too. I followed the tutorial. I worked thru it… --- ## [Select\_tag - observe field](https://www.ruby-forum.com/t/select-tag-observe-field/133037)
**Author:** [@jimmypalmer](https://www.ruby-forum.com/u/jimmypalmer)\ **Replies:** 2\ **Last updated:** [April 5, 2008, 5:06pm UTC](https://www.ruby-forum.com/t/select-tag-observe-field/133037 "2008-04-05T17:06:48Z")
I’m trying to do an ajax call when the select (drop down) gets changed. What’s the best way to do this? --- ## [Employments example using Rich associations :through](https://www.ruby-forum.com/t/employments-example-using-rich-associations-through/133865)
**Author:** [@macarthy](https://www.ruby-forum.com/u/macarthy)\ **Replies:** 1\ **Last updated:** [April 5, 2008, 5:05pm UTC](https://www.ruby-forum.com/t/employments-example-using-rich-associations-through/133865 "2008-04-05T17:05:02Z")
What is the best way to deal with this model in rails 2.0 + class School \< ActiveRecord::Base school model has a name attribute has\_many :employments has\_many :teachers , :through=\> :employments end class Teacher \< … --- ## [Validates\_numericality\_of :not\_equal\_to](https://www.ruby-forum.com/t/validates-numericality-of-not-equal-to/133837)
**Author:** [@pkoebbe](https://www.ruby-forum.com/u/pkoebbe)\ **Replies:** 6\ **Last updated:** [April 5, 2008, 3:58pm UTC](https://www.ruby-forum.com/t/validates-numericality-of-not-equal-to/133837 "2008-04-05T15:58:10Z")
I have a situation in which I want to validate a number is not zero. Both positive and negative values are acceptable, just not zero. validates\_numericality\_of has an :equal\_to attribute, but I don’t see a :not\_equal\_… --- ## [How to call a dll file from rails application?](https://www.ruby-forum.com/t/how-to-call-a-dll-file-from-rails-application/133949)
**Author:** [@ratnavel](https://www.ruby-forum.com/u/ratnavel)\ **Replies:** 1\ **Last updated:** [April 5, 2008, 2:07pm UTC](https://www.ruby-forum.com/t/how-to-call-a-dll-file-from-rails-application/133949 "2008-04-05T14:07:14Z")
HI, In my application i have a requirement to call a dll file. How to call a dll file from rails application… Thanks, Ratnavel. --- ## [Crystal Reports in ROR application](https://www.ruby-forum.com/t/crystal-reports-in-ror-application/133939)
**Author:** [@karthikeyan](https://www.ruby-forum.com/u/karthikeyan)\ **Replies:** 0\ **Last updated:** [April 5, 2008, 7:58am UTC](https://www.ruby-forum.com/t/crystal-reports-in-ror-application/133939 "2008-04-05T07:58:30Z")
Hi, I want to use Crystal Reports in my ROR application. The way I am planning is to create an XML file and send the file as the input for the Crystal Report application. I believe there is no API in ROR to access th… --- ## [Lost: libruby1.8.so.1.8](https://www.ruby-forum.com/t/lost-libruby1-8-so-1-8/133930)
**Author:** [@explainer](https://www.ruby-forum.com/u/explainer)\ **Replies:** 0\ **Last updated:** [April 5, 2008, 5:38am UTC](https://www.ruby-forum.com/t/lost-libruby1-8-so-1-8/133930 "2008-04-05T05:38:28Z")
I had a minor meltdown of my system and some libraries got corrupted, including libruby1.8.so.1.8. I tried reinstalling the Ubuntu ruby- full and rubygems packages, but the library is still missing. Can anyone tell … --- ## [Overloading and wrapping an association method](https://www.ruby-forum.com/t/overloading-and-wrapping-an-association-method/133767)
**Author:** [@jesseproudman](https://www.ruby-forum.com/u/jesseproudman)\ **Replies:** 3\ **Last updated:** [April 5, 2008, 4:15am UTC](https://www.ruby-forum.com/t/overloading-and-wrapping-an-association-method/133767 "2008-04-05T04:15:27Z")
Hi all: For example I have: class Color \< ActiveRecord::Base belongs\_to :ball end class Ball \< ActiveRecord::Base has\_many :colors end What I want to do is to write a method that: takes the result of Ball#color… --- ## [Custom routes issue](https://www.ruby-forum.com/t/custom-routes-issue/133929)
**Author:** [@sumwutdum](https://www.ruby-forum.com/u/sumwutdum)\ **Replies:** 1\ **Last updated:** [April 5, 2008, 3:24am UTC](https://www.ruby-forum.com/t/custom-routes-issue/133929 "2008-04-05T03:24:21Z")
The url that is generated for an additional controller method is causing some confusion. I have a site where people can enter their email to get access for a beta account. This allows me to later grant each person a… --- ## [Routing and default module](https://www.ruby-forum.com/t/routing-and-default-module/133695)
**Author:** [@dburkes](https://www.ruby-forum.com/u/dburkes)\ **Replies:** 3\ **Last updated:** [April 5, 2008, 12:26am UTC](https://www.ruby-forum.com/t/routing-and-default-module/133695 "2008-04-05T00:26:34Z")
I would like to route all requests with the path “foo/:controller/:action” to a modulized controller like ‘bar/#{controller}’. So “foo/bro/index” goes to Bar::BroController, “foo/baz/index” goes to Bar::BazController… --- ## [Date.to\_s format with time\_ago\_in\_words](https://www.ruby-forum.com/t/date-to-s-format-with-time-ago-in-words/133922)
**Author:** [@jdugarte](https://www.ruby-forum.com/u/jdugarte)\ **Replies:** 0\ **Last updated:** [April 5, 2008, 12:21am UTC](https://www.ruby-forum.com/t/date-to-s-format-with-time-ago-in-words/133922 "2008-04-05T00:21:41Z")
Hello, Following this post’s instructions (railspikes.com) I’m trying to define a Date format like this: ActiveSupport::CoreExtensions::date::Conversions::DATE\_FORMATS.update(:date\_ago =\> lambda { |date| date.strftim… --- ## [\[Job\] ROR Developer Job - Palo Alto, CA - A2Z Development (An Amazon.com Company)](https://www.ruby-forum.com/t/job-ror-developer-job-palo-alto-ca-a2z-development-an-amazon-com-company/133920)
**Author:** [@JonathanSA2Z](https://www.ruby-forum.com/u/JonathanSA2Z)\ **Replies:** 0\ **Last updated:** [April 4, 2008, 11:37pm UTC](https://www.ruby-forum.com/t/job-ror-developer-job-palo-alto-ca-a2z-development-an-amazon-com-company/133920 "2008-04-04T23:37:03Z")
Please respond to: removed\_email\_address@domain.invalid Full Time - Senior Software Development Engineer - A2Z Development Center (An Amazon.com Company), Palo Alto == UnSpun == UnSpun by Amazon is a product being de… --- ## [\[ANN} log\_buddy 0.0.2 released](https://www.ruby-forum.com/t/ann-log-buddy-0-0-2-released/133919)
**Author:** [@rsanheim](https://www.ruby-forum.com/u/rsanheim)\ **Replies:** 0\ **Last updated:** [April 4, 2008, 11:27pm UTC](https://www.ruby-forum.com/t/ann-log-buddy-0-0-2-released/133919 "2008-04-04T23:27:41Z")
DESCRIPTION: log\_buddy is your friendly little log buddy at your side, helping you dev, debug, and test. SYNOPSIS: Call LogBuddy.init to use log\_buddy. It will add two methods to object instance and class level: “d… --- ## [Manually installing](https://www.ruby-forum.com/t/manually-installing/133917)
**Author:** [@cypherzero](https://www.ruby-forum.com/u/cypherzero)\ **Replies:** 0\ **Last updated:** [April 4, 2008, 11:21pm UTC](https://www.ruby-forum.com/t/manually-installing/133917 "2008-04-04T23:21:55Z")
After gems failing to work many times with missing dll errors I am wondering if there is any way to install manually? I’ve got ruby working and I downloaded the zip for rails but can’t seem to find an installer script… --- ## [In a migration, how to specify 'self.down' if self.up drops a table](https://www.ruby-forum.com/t/in-a-migration-how-to-specify-self-down-if-self-up-drops-a-table/133916)
**Author:** [@dino\_d](https://www.ruby-forum.com/u/dino_d)\ **Replies:** 2\ **Last updated:** [April 4, 2008, 10:53pm UTC](https://www.ruby-forum.com/t/in-a-migration-how-to-specify-self-down-if-self-up-drops-a-table/133916 "2008-04-04T22:53:38Z")
Hi- I no longer need a join table and want to drop it, but I want to be able to recover if I’ve made a mistake. Is there an easy way to capture the current state of the table and incorporate it into my self.down? A… --- ## [Validation for at least one record in database](https://www.ruby-forum.com/t/validation-for-at-least-one-record-in-database/133859)
**Author:** [@vapor](https://www.ruby-forum.com/u/vapor)\ **Replies:** 2\ **Last updated:** [April 4, 2008, 9:34pm UTC](https://www.ruby-forum.com/t/validation-for-at-least-one-record-in-database/133859 "2008-04-04T21:34:07Z")
I don’t want user to delete all entries in database. There should be at least one always present. How can I put this validation in model? --- ## [Rails \> email campage software available?](https://www.ruby-forum.com/t/rails-email-campage-software-available/133847)
**Author:** [@remco123](https://www.ruby-forum.com/u/remco123)\ **Replies:** 1\ **Last updated:** [April 4, 2008, 9:31pm UTC](https://www.ruby-forum.com/t/rails-email-campage-software-available/133847 "2008-04-04T21:31:11Z")
Hi, I am looking for a e-mail campagne management tool written in ruby for sending news-letters. Anynone suggestions? Grytz…remco --- ## [Rjs-file: javascript shown instead of executed - mime-type?](https://www.ruby-forum.com/t/rjs-file-javascript-shown-instead-of-executed-mime-type/133808)
**Author:** [@jehoho](https://www.ruby-forum.com/u/jehoho)\ **Replies:** 3\ **Last updated:** [April 4, 2008, 8:48pm UTC](https://www.ruby-forum.com/t/rjs-file-javascript-shown-instead-of-executed-mime-type/133808 "2008-04-04T20:48:48Z")
Hi. Using a rjs-file my browser shows the javascript-code instead of executing. Why? Is there a wrong mime-type configuration? Where to fix it? Thanks Jens [Previous page](https://www.ruby-forum.com/c/ruby-on-rails/6.md?page=1408) [Next page](https://www.ruby-forum.com/c/ruby-on-rails/6.md?page=1410)