similar to: detecting changed data - retry

I am working on an application where there are many different screens to access the data in a particular record/row. I have links to each data entry screen at the top. Is there a way to detect whether the current hash has been changed from the stored record so I can prompt the user if they attempt to change screens without having saved their changes to the data? Craig

I am in a holding pattern while client decides upon changes and so I am working some things out internally so it seems to me that indexing frequently searched table fields might be useful. I am using postgres and via postgres, I have added an index to one of my tables whose index is the same name as the column name. The ''find'' screen I am using this to judge populates a number

Hi there, when i do this: session[:myItem] = ''foo'' session[:myItem] = nil the item :myItem is removed from the session. But this: session[''myItem''] = ''foo'' session[''myItem''] = nil doesn''t remove ''myItem'', it''s empty but still in the session. Any suggestion ? Thanks in advance. mic

I normally don't do this - haven't got any traction on taroon list and I want to get a backup going. I have an RHEL 3 server and it is serving some simple web stuff (horde/imp/etc.) I have installed BrightStor ArcServe and I need it to also serve some web pages. The ArcServe runs on a different port but has it's own httpd.conf with the distribution. The last time I did it, it was

Obviously I am missing something and I don''t know what it is... I am following the instructions at http://rubyforge.org/docman/view.php/381/114/activeldap_rb.html and also here... http://wiki.rubyonrails.org/rails/pages/HowtoAuthenticateViaLdap my model looks exactly like this... class LdapUser < ActiveRecord::Base ldap_mapping :dnattr => ''uid'', :prefix

I would swear that I am tracking exactly the method used in Agile book... TypeError in Placements#edit Showing app/views/placements/_form.rhtml where line #33 raised: wrong argument type String (expected Module) Extracted source (around line #33): 30: <tr> 31: <td><label for "type">Type</label></br><%= 32: options = [["Select

I simply can''t figure this out. I have been reading and re-reading Agile book and wiki.rubyonrails.org - all sorts of validation methods and still, it doesn''t work. Controller code def create @client = Client.new(params[:client]) if @client.save! flash[:notice] = ''Client was successfully created.'' redirect_to :action =>

I want to use select form elements to choose between boolean options. How can I have it default to true and still display the persisted value (either true or false) when editing an existing object? I guess booleans default to false by default so its not obvious how to recognize when it''s a real ''false'' that the user set or default false because the value was null.

This seems rather ugly. I am thinking that this needs to be in the model but I am looking to obtain the date for a tb test... >> @tb = Innoculation.find(:all, :conditions => ["personnel_id = 1 AND innoc_type = ''TB''"], :order => ''innoc_date DESC'') => [#<Innoculation:0xb77ed234 @attributes={"id"=>"1",

I think they are called tool tips... I have view code that looks like this... <%= link_to ''I'', :action => ''edit_innoculations'', :id => personnel %> Is there an option (I don''t see it in api) to have tool tips for a link_to ? Craig

I have an OpenLDAP backend, Samba knows how to talk to it, my Samba users are stored in LDAP and file shares work fine authenticating to the LDAP server. I tried executing smbldap-useradd -w server02 on the command-line and got the following error: failed to perform search; Can't contact LDAP server at /usr/lib/perl5/vendor_perl/5.8.7/smbldap_tools.pm line 362, <DATA> line 283. Error

I have some nice forms done using stylesheets. I currently have them displaying on screen and the user could simply just print. This works when there is only one form (facility) to be viewed/printed. I have created the looping code necessary to print for all facilities but that doesn''t work for me because each page uses stylesheets with <div> that do absolute positioning and thus

because I am a grasshopper... Now that I can sort my ''list''...is there a logical way of not repeating myself to having essentially the same list view with multiple sorts? i.e. def list_cl # ordered by clients last name @placement_pages, @placements = paginate( :placements, :include => [:client], :order_by =>

We have had a Samba LDAP-PDC-BDC system setup for close to 3 months with about 60 computers in the domain. Earlier we had a power outage and about 30 computers no longer were able to log into the domain or authenticate. Some were NT Workstations and some were W2k. But not all NT or W2K workstations were affected. If we went to network neighborhood we would see the error message "

class Foo < ActiveRecord::Base has_one :bar delegate :app, :to => :bar end class Bar < ActiveRecord::Base belongs_to :app def self.attribute_column_names return @@attr_columns if defined?(@@attr_columns) readers = content_columns.map { |n| n.name.intern } - [:created_at,:updated_at] @@attr_columns ||= readers.map { |k| [k, "#{k}=".to_sym] }.flatten end

I want to create table called roles and then populate it with some new records...This doesn''t work. Is there something I''m missing? Craig class AddRightsAndRolesTables < ActiveRecord::Migration def self.up create_table :roles do |t| t.column "name", :string end Role.reset_column_information Role.new :name => "Users Admin"

I have the text_field_with_auto_complete woking on my user DB using last_name. so looking for ''ivanoff'' works great, but I can''t find ''john''. Plus I like to have ''last_name, first_name'' show up in the dropdown. what I can''t figure out is how to concat first_name and last_name to make a name and use that to look it. working

I want to combine a selection of data from two tables and display it as list. Note that this isn''t a join. i''m looking for something like this: Table 1: Sheep Name, Age, Farmer, etc. (sheep specific columns) Table 2: Cows: Name, Age, Farmer, etc. (cow specific columns) For my display I nneed something like this: Farmer Jone''s Livestock: TYPE NAME AGE Cow

how do you get helix to play wmv files

In my controller...this code works def list2 first_name = params[:client][:first_name] @myclients = Client.find(:all, :conditions => ["first_name = :first_name", {:first_name => first_name}]) end this code doesn''t... def list2 first_name = params[:client][:first_name] if first_name searchstring = ''["first_name =