similar to: adding numbers

I''ve been trying to use the ez_where plugin to create a dynamic finder. The structure looks somehing like this.. === controller === def list attribute_filter = params[:filter] @filter = Caboose::EZ::Condition.new :table do attribute <=> attribute_filter if attribute_filter end # ... do the find with the @filter # end === view === .... <%= link_to

Hello, how can I check if a destroy was successful? Is the object only frozen if deleted or do I have to do an additional find to see if there is a record left? What happens if an after_destroy callback returns false? Is there always a rollback? Markus

I was trying to access rails functions (number_with_precision) from an irb session. It can''t find the method. How do I load the libraries ? TIA LS -- Posted via http://www.ruby-forum.com/.

What is the best way to create a drop down where the viewable text in a concatenation of 2 or more columns? For instance, I hane a lookup table with these columns. Model FOO columns: id , name, phone In my drop select tag, I''d like the user to see: "name1 phone1" "name2 phone2" etc.. I know I can do this using find_by_sql . .. But, isn''t there a more

Hi, Just get started with Rails and I''m trying to read ahead and find out whether Active Record supports auto-creation of database tables for you? Is this supported, or is the concept that you write your own database DDL to do this? Thanks -- Posted via http://www.ruby-forum.com/.

Hello. Using the ":include", which generates a "LEFT OUTER JOIN" SQL command, it is possible to eagerly preload second order data objects (children) for a given association. I wanted to know, if it is possible to eagerly preload and cache third order (or more) data objects, which are little-children or little-little-children. As I''ve seen. it is possible to add

a has many b''s b has many c''s results = A.find params[:id], :include => :b How do you also make sure the b''s include the c''s? Thanks for your help. Thank You, Ben Johnson E: bjohnson@contuitive.com O: 800-341-6826 M: 817-229-4258 -------------- next part -------------- An HTML attachment was scrubbed... URL:

All, I have a form with the following field interaction rules. Given checkbox A, text field B text field C If checkbox A is checked then make text field C equal to the value of text field B and disable field C. If checkbox A is unchecked then enable field C. In order to display a form where I''m manipulating an already existing object, I have something like this in my RHTML template

This forum has been a great resource for me. It would be great if i can search the forum before posting any question, as i''m sure someone has already posted that question before. The search function has been disabled for quite sometime now. I''ve already emailed the administrator but haven''t got any response. any idea on when this would be enabled ? Thanks, VASU.

I am having a problem with ruby''s sort_by function. I want to sort a list of parent model objects based on the children of the parent models. Normally you might say sortedList = modelList.sort_by { |model| model[''someAttribute''] } What I am tring to do is sortedList = modelList.sort_by{ |model| model.children.find(:first, order=>"price desc" ).price}

Hi, I have a question about displaying digits in Rails. whenever I print the price of an item, if the last digit is a zero or double zeros then it doesn''t display properly. How do I display a number so that it looks like currency? thank you! -- Posted via http://www.ruby-forum.com/.

Is it possible to use the calculate methods (sum, etc.) on attr_accessor attributes? Ie: Class Item < ActiveRecord::Base attr_accessor :total_cost def total_cost @total_cost = self.cost_unit * self.amount end calling Item.sum(:total_cost) or Item.sum(''total_cost'') both return a unknown column ''total_cost'' mysql error. I thought that active

All, I am trying to perform a simple ajax task and am having some difficulties with the page showing the response. The action performs, but no response on the page. I have found examples on the web and I believe I have copied and pasted exactly what works from the demo site. However, on my system it isn''t finishing. For a simple test, I have limited it down to an alert.

hi, could somebody tell me the difference between: if not params[:id] flash[:notice] = blabla'' redirect_to(:controller =>"calendar", :action => ''index'') end and: if params[:id] == nil flash[:notice] = blabla'' redirect_to(:controller =>"calendar", :action => ''index'') end the first one

Hi, I''m new to rails/ruby having come from PHP and am just starting to get my head round how easy it can be :) However, can anyone point me in the right direction for dynamicaly updating a select box based upon the choice of a previous select box, without a page refresh. Any and all help greatly appreciated. Thanks -- Posted via http://www.ruby-forum.com/.

How can I know if a an element is visible or hidden in RJS I''m trying to hide/show some data but it does not work Error => parse error, unexpected $undefined. #show_doctor.rjs if($("#{@element}").visible()) page.hide "hide_#{@element}" end Any ideas? @element contains the value of the html element -- Posted via http://www.ruby-forum.com/.

I have a little web app where we need to paginate collections of items. I''m trying to sort the collection and then pass it, sorted, to a Paginator, and still be able to paginate through the collection, across several pages, with the new sort order. The only thing I''m doing differently from the regular scaffolding approach is this: @order_pages = Paginator.new(self,

I am trying to inherit from a ActiveRecord class defined in a plugin. The problem is that ActiveRecord thinks I am doing an STI and is looking up a table that doesn''t exist. Currently, I have a method in the parent class that looks like this: def self.fix_table_name class_eval do set_table_name(Inflector.tableize(self.to_s)) end end The problem is that this method

Another newbie question: How do i convert a float to a string, rounded to a certain number of decimals? Thanks -- Posted via http://www.ruby-forum.com/.

I''m looking to implement model inheritance in a new application. Is there any good alternative to single-table-inheritance? -- -Alder