similar to: How do change catalog before catalog is delted?

Hi, Is there a way to use the :dependent option to set a certain attribute to null rather than destroying the records? For example, take the following models: User id, integer name, string group_id, integer belongs_to :democrats Groups id, integer name, string has_many :users If I delete a certain group, is there a way to have the ''group_id'' attribute of all the

We have a test that has been working find until we upgraded to rails 2.3.5. I''m not too familiar with mocks/stubs so maybe there is an easy solution. Here is a simple example of our scenario. Class Person < ActiveRecord::Base has_many :aliases, :dependent => :nullify before_destroy :mark_aliases_as_deleted def mark_aliases_as_deleted self.aliases.each do

I have an Order model with a ''status'' column. What I want to be able to do is validate that the status of the Order is not completed before it is allowed to be deleted. I tried the following method in my Model, but it appears that this only works for an :update or :create on the record. Anyone know how to do this, and if it should be in the model or the controller?

Rails has many built in validation methods to ensure that an ActiveRecord instance cannot be created or updated under certain situations (typically caused by invalid data). However, I can find no methods to govern whether an ActiveRecord instance can be destroyed. Essentially, I wish an error to be raised when a user tries to delete an ActiveRecord without first adhering to a certain set of

What''s the best way to validate_on_destroy. Rails only seems to include validate_on_create and validate_on_update methods. I don''t want to resort to doing: before_destroy do |j| raise "There is an error" if j.etc end Is there a way of finding out what action (create/update/destroy) is being performed if I use the ''validate'' method? -- Posted via

Hello, I''m trying to intercept delete call in my model but before_destroy callback is never called... Somebody knows why ? Thanks The controller : def delete Image.delete(params[:id]) redirect_to :action => "list" end The model : class Image < ActiveRecord::Base set_table_name "publish_images" belongs_to :article before_destroy :on_destroy

e.g. class Asset < ActiveRecord::Base validates_presence_of :asset_number, :make, :model, :location, :name, :serial_number validates_numericality_of :asset_number validates_uniqueness_of :asset_number belongs_to :user belongs_to :location belongs_to :asset_type, :foreign_key => ''type_id'' end class Location < ActiveRecord::Base validates_presence_of :name

Hi out there, I just compiled the latest icecast2 and tried to use chroot and yp-dir-listing together, but it doesn't work. Yp-dir-listing itself works fine. I use a SuSE 8.2 and older libs (curl 7.10, libogg and lib vorbis araound 1.0.95) that should still be in the combatibility-range, as far as I can read on icecasts homepage. I hope there will be a fix for that bug in the

Hi All, I''m trying to prevent users from deleting a folder that has contents like this: class Folder < ActiveRecord::Base has_many :myfiles has_many :folders belongs_to :folder validates_uniqueness_of :name, :scope => "folder_id" before_destroy :dont_destroy_folder_with_contents def dont_destroy_folder_with_contents if Folder.find(id) != nil ||

How would I stop the last user being deleted. The following code doesn''t work. before_destroy :dont_destroy_last_user # Don''t delete user if it the last one def dont_destroy_last_User raise "Can''t destroy last user" if User.length < 1 end -- Posted via http://www.ruby-forum.com/.

I have a tree of models that represent a book. Looks like this: book sections documents paragraphs index entries glossary entries footnotes index entries glossary entries These are all models with has_many from parent and the child has belongs_to. They also all have dependent => :destroy

Hi, There is something I don''t understand about :dependent => :destroy. I hope someone can help me. Consider this code: class Folder < ActiveRecord::Base has_many :myfiles has_many :folders has_many :group_folders, :dependent => :destroy validates_uniqueness_of :name, :scope => "folder_id" validates_presence_of :name before_destroy

I have a User class with a field called admin which is a boolean that determines if the user is or is not an administrator. I want to make it impossible for the last administrator for an account to be removed from the system. I need to protect against this both when deleting a user and when editing a user as you can revoke a user''s administrator privileges via a form. User

Hi all, i''m learning rspec and i must admit i really love it. But at the time i started learning it, i already developed my models classes and their callbacks. Now i''m trying to get a 100% coverage of my code but i cannot reach it because i do not understand how to spec my callbacks. Look at this for example: ----------------- User Model class User < ActiveRecord::Base

Hi. First of all I would like to say "thank you" to David for its really valuable work. Ferret is a great project and it have great future. Well now is my questions as beginner in Ferret. How to remove ALL documents from index. Remove files is not a solution. I am interesting in something like index.remove_index or something like this. What is a usual way of doing it?? What is the

Hi all I''ve approached Rails since a couple of months to develop a quick application for my company. Fantastic framework. As every noob, I do have some gaps to cover. The one which is giving me a little frustration, generated by my lack of knowledge is as follows. I need to make sure the region object is not deleted if there are countries associated with it. I solved this by putting a

I am having a problem with two models that each have a HABTM relationship to the other. For example: CREATE TABLE people (id INT, name TEXT); CREATE TABLE teams (id INT, name TEXT); CREATE TABLE people_teams (person_id INT, team_id INT); The person model has: has_and_belongs_to_many :teams And the team model has: has_and_belongs_to_many :people The trouble comes when trying to destroy

How to write the method before_destroy? Here is my code: def before_destroy errors.add(:isdefault,"Can''t destroy default record") if self.isdefault return false end or I should write it like below? def before_destroy raise(Can''t destroy default record") if self.isdefault end and how to write the test for it -- Posted via

Hey, probably an easy question but, I''m trying to get a method to run "before_destory" for a model, and I want the method to throw an error, and not delete the object from the database, if a certain condition is held Obviously, I can just raise an error and rescue it... but for some reason I can''t get <% error_messages_for ''model" %> to catch

Hello, I posted a similar email, earlier in the week, but I still must not be getting it. I have a customer that aggregates two addresses; a shipping address and a billing address. Addresses can also be referenced by other objects in a similar way, so I would really like to avoid putting the keys referencing the customer or other objects in the addresses table. Addresses are exclusively