similar to: Safe way to destroy records

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/.

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

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

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:

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}

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

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

Running into an interesting problem that at first glance appears to be a bug in the AR association code. However, it''s explicitly coded this way so I''m not so sure. I have some code like this: class Address < ActiveRecord::Base belongs_to :addressable, :polymorphic => true end class Person < ActiveRecord::Base has_many :addresses, :as => :addressable,

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

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

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,

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.

Consider this problem. I have an Item that has_many Features I want to find all Items with a Feature name of ''foo''. Normally you would do this.. @items = Item.find(:all, :conditions=>["features.name = ?", ''foo''], :include=>:features) This all works fine and dandy except for this problem. If you do this... <% for item in @items %>

Hi, I would like to be able to dynamically (without reloading the page) change the values from one listbox when a user select items from another listbox. I have a model ''Sector'' which has_many ''levels'' (and of cours, ''Level'' beyong_to ''sector''). I want to show the user two listboxes with the sectors and levels. But

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

Hello everyone, I''ve got a table of data that looks like the following: ... <tr> <td>Field 1</td> <td>Field 2</td> <td><%= link_to "Info about Field 1", ... %></td> <td><%= link_to "Info about Field 2", ... %></td> </tr> I''d like the user to be able to click on "Info about

hi, i have noticed that the validations in RoR happen at server side mostly what sites do is using javascript they validate user information there... whats the point of doing it at the server side is it that loading of javascript file in a browser makes a response to client slow and validation at server side offsets that....????? any sugeestions???? is it that i am missing something as

Hiall, Unfortunately I just can''t find out how to setup a default selected value when using collection_select. My call is like so: <%= collection_select(:consultant, :lastname, @consultants, :id, :lastname, { :selected => @current_consultant.id } ) %> which is not working, I debugged so far that I know that @current_consultant.id contains the correct value. Any tips? cheers

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