similar to: myObject.send(column.name) from Agile Development book

How does one do a SELECT MAX query in rails? I''ve searched and searched and tried lots of things with no luck. I want to implement "SELECT MAX(column_name) from table_name and have it return the maximum value from column_name. I just need to get that one value, not the whole object... Thanks for any ideas... Shelby _______________________________________________ Rails mailing

Using a <%= form_tag ... %>, how do I give a form a name, so that I can reference it with javascript? I sure can''t figure this out from the docs... Thanks, Shelby PS - what I am trying to do is just have the focus in the first form field when the form is loaded. There has to be an easy way to do this, but I can''t figure it out... -------------- next part --------------

I have a rather complex object with a number of attributes. For a variety of reasons, I would like one view to create the object with only a couple of fields completed, then a second and third view to finish all the fields. I would like the model to validate_presence_of all these fields, since eventually I need them all there, and I would like each page to validate its portion of the fields that

I''m having an argument with my son :) I have a table with about 1500 objects called entries. I need to do something with about 100 of them (schedule manually) I say I should just mark them with a boolean when I have scheduled them. (manual == true) My son says I should pull them out of the entries table and copy them to new objects (lets call them "manual" objects, and store

I have a database field called dates in which I am trying to serialize an array of DateTime objects. When I unserialize them, they are coming back in as Time objects. I know this, because I am getting errors that say "comparison between Time and DateTime failed. Why is this happening? Is there a way to prevent it?? Thanks Shelby -------------- next part -------------- An HTML attachment

I''ve gone once through the Agile book and am now attempting my own rails app. I''ve created a table named ''volunteers'' with over 15 columns. The problem is the default list.rhtml that is created with the scaffold, shows all the columns. I only want to show 4 of them with the list view. Where would I start to only return a handfull of columns to the

My code executes fully: <% for column in ModelName.content_columns %> <th><%= column.human_name %></th> <% end %> but it does not pick up any columns in my model''s table that end in "_id". Is this by design? Is there a helper method that will reference the related tables? Or will I need to code the column titles and detail records by

Let''s say I have an application and I want to create an admin program that will show me who is currently online using the application. I don''t know the best way to do this. Assuming I am storing my sessions in the default PStore, I don''t suppose there is any method that lists all the active sessions, is there? The only way I can think of to do this is to setup a

Reading the Agile book, I can''t find a single command to save a collection. The save command seems to operate on only individual objects. Lets say I have a collection that I have received from a find_all command. I want to go through and change some attributes in various objects in the collection. Then I want to resave the whole collection back to the database. I don''t think

Hi guru''s out there, Im happilly coding my first rails app, and all goes well. I find myself manually coding in a particular field all the time (company_id), that relates the contact to a company. The total coding of this form seems somewhat much. Could somebody tell me what Rails power I''m possibly missing and stuborn as I am trying to do myself? I was wondering if the

Hi, I''m a newcomer to Ruby and to Rails, and am having a problem with character encoding. Now, I know ruby doesn''t handle unicode...but, characters like ? (eacute) and ? (ccedil) are part of the iso-8859-1 charset, so it shouldn''t be a problem, right? But, for some reason, the string functions still seem to hang on those characters. As an example, in a brand new rails

I am confused about ruby fast C bindings. Does the command: gem install mysql install these? Is this page: http://www.tmtm.org/en/mysql/ruby/ the home page for these bindings? If so, it gives no instructions about installing them with using gem. Wondering if this is all the same??? Thanks for any help... Shelby _______________________________________________ Rails mailing list

Appreciate any help - I am working through Agile web development (4.0) and am stuck on the deployment using phusion passenger. I get this: "Forbidden You don''t have permission to access / on this server." when I put depot.yourhost.com in the browser. I have been through various web searches and for file permissions and suggestions to change the <Files> container.

In a standard scaffold generator, the list.rhtml looks something like this ... <% for column in Book.content_columns %> <th><%= column.human_name %></th> <% end %> How can I modify this code so for each table column add my own name not the "human_name" generated code? -- Posted via http://www.ruby-forum.com/.

i''ve got a cool app going and it''s getting bigger and bigger, but now i''m trying to customize the show function. i''m using the scaffold code as a base but can''t seem to get anything to look right. i guess i''m confused about how exactly the scaffold code works for the "show" function. any help would be awesome! thanks. jon --

I have rewritten a java webapp into rails. The database structure is basically the same except that: 1) in the legacy app, several of the tables did not use ID numbers, but relied on other fields as the primary key 2) in the legacy app, there is a join table that uses email address and category names to do the join, not ID numbers I would like to move or change this database to match my new

I have been working on implementing a variant of the depot example as a method of learning rails. I have come up against a css question that is driving me nuts. This may not be the right forum to ask this question. If anyone would like to refer me to another place to ask, I would be grateful. Most of the code that I am working on is straight from the examples, with minor alterations. What is

What is the proper syntax to apply a css class to a link created using link_to? I''ve tried <%= link_to("details", :class => "details", :action => "edit", :id => event) %> but that creates a link which looks like /admin/events/edit/3?class=details which is not what I''m looking for. Kyle Heon

Hi ya, I want to add categories to the depot example in the Agile rails book. These are my thoughts: Create a new table called categories with id, title, description, and image fields. Add a new field to the products table called category_id Create a model called Category with "has_many :products" Now I should have a one to many link between the products and categories tables? Now

Hello. Where is there an Agile Messageboard? On the first part of the Depot example, a price field shouldn''t be an integer right? (it should be more of a float since a price has decimals) Dominic Son -- Posted via http://www.ruby-forum.com/.