similar to: looking for more idiomatic way of doing this

I need to compare a column in TableA to a column in TableB and then select 3 columns from TableA for all the records in TableA that don''t exist in TableB. TableA and TableB are different but do have one field in common that i am comparing. The tables are not related in anyway. right now I have a find_by_sql query located in a model that looks like this: def self.absent_charges

Hey everybody, I''ve got a model that represents kind of a turn-based games. Certain actions can only be made unders certain conditions. For simplicity, we''ll say that the only condition for a particular action is that the weekday be Tuesday. def add_vote raise ''You cannot vote today'' unless Date.today.wday == 2 ... end In my controller I want to show a

I can''t figure out how to get the collection_select to correctly identify and select the appropriate option in the drop down to begin with. i have checked that charge.offense_level contains the correct value to begin with (a number between 1 and 10) but the view still defaults to the first option and not the one contained in the charge.offense_level. what am i doing wrong? any

Apologies for such a basic question. I''ve wracked my brain on this a couple days so if anyone takes pity, please help me out. I''ve been looking at STI (Single Table Inheritance) at the Rails Wiki and decided to try it out. I got it working in the model and controllers but can''t figure out how to make a proper view that will take the values and add them into the

Folks, I''m trying to write a validating filter that checks if the user exists and renders XML if not. Most of the controllers will be returning XML on some error or other so I''m including RenderError in ApplicationController. Is my approach a sound one? Also, is there a shorter and more idiomatic way of writing this: if @user.nil? render_user_exists

This is a real mystery to me. I have an instance variable in a partial that only gives its value inside a hidden_field_tag. If I try to use the variable anywhere else in the partial, i either get nil or an undefined error. The goal is to use the value of @event.id outside of hidden_field_tag. Here''s what works: <%= hidden_field_tag ''id'', @event && @event.id,

Considering the python code: for k, v in d.items(): do_something(k); do_something_else(v) I have the following for R: for (i in c(1:length(d))) { do_something(names(d[i])); do_something_else(d[[i]]) } This does not seem seems idiomatic. What is the best way of doing the same with R? Thanks. Luis

Guys, I have a partial that is shared by many controllers, and this partial has a link that needs to do different things based on which controller calls it. So, the partial looks like this: <!-- _part.rhtml --> <tr> <td><%=part.number%></td> <td><%=part.associated_part_number%></td> <td><%=part.drawings%></td>

Hello, I have a vector of 1,000,000 numbers and another vector of 1,000 divisors. What I'd like to do is to divide the first 1,000 numbers of the first vector by the first divisor, then the next 1,000 by the second divisor and so on. I came up with this, but I was wondering if there is a more idiomatic, R-like way to write it: x <- ... divs <- ... for (i in seq(from = 1, to = 1000000,

Hi all, I have a a really, really dumb Newb question... I am trying to use observe_form to use AJAX calls in order to refresh a particular page fragment using the form data. I have run into a stumbling block very early on in the process - how can I provide an ''id'' attribute to the form_remote_tag or start_form_tag methods? Specifying something like :id =>

Is there a more elegant way of writing this? def verify_user @user = User.find_by_username params[:username] if @user.nil? message = xml.error do |xm| xm.message "User does not exists: #{params[:username]}" end render :xml => message return false else true end end Thanks, Joel --

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> diff -r 8d6edc3d26d2 -r cfb49fe940fd tools/hotplug/Linux/init.d/xencommons --- a/tools/hotplug/Linux/init.d/xencommons Sat Aug 13 10:14:58 2011 +0100 +++ b/tools/hotplug/Linux/init.d/xencommons Tue Aug 16 16:56:16 2011 -0700 @@ -29,11 +29,9 @@ XENCONSOLED_PIDFILE=/var/run/xenconsoled.pid shopt -s extglob -if test

I have a class which stores as one of its attributes a day of the week as an integer (0-6, 0=Sunday, standard UNIXy values). I want, obviously, the views to show the weekday name and the forms to provide a drop-down with the weekday names. Essentially it''s a vrtual attribute whose value is the localized weekday name, which maps to the integer value that''s actually stored.

Go API functions returned (<val>, *GuestfsError) that made code like this fail to build: n, err := os.Stdin.Read(buf) if err != nil { log.Fatal(err) } n, err = g.Pwrite_device(dev, buf[:n], off) ... As err should be of error (interface) type as of the stdlib call, and should be of *GuestfsError type as of the libguestfs call. The concrete error value that

I just updated an old app from 1.2.6 to 2.0.2 and I''m having an rjs problem. I have one page that has 2 submit to remote buttons, one to do a price override and the other to remove the lineitem. Everything is working perfectly before the update but now the price override doesn''t update the page. I''ve verified that the price_override method still gets called because

Prefer named constants over magic numbers in the 'struct option' list, and expand the list of enums for long-only options so that the call to getopt_long() can switch directly to every option, rather than needing a lengthy if/else chain that grows for every new long option. Patch best viewed with whitespace changes ignored. Signed-off-by: Eric Blake <eblake@redhat.com> ---

Signed-off-by: Simon COURTOIS <scourtois at linagora.com> --- src/app/controllers/vm_controller.rb | 5 ++ src/app/models/vm_task.rb | 4 +- src/app/views/vm/start.rhtml | 77 ++++++++++++++++++++++++++++++++++ src/task-omatic/taskomatic.rb | 7 +++- 4 files changed, 91 insertions(+), 2 deletions(-) create mode 100644 src/app/views/vm/start.rhtml diff

Hey I''m having problems understanding the select helper. Here is my code: _____________________ DB table: genres id name descripition ___________________ In the controller: def index() @genres = Genre.find_all.map {|u|[u.name, u.id]} @id = params[''genre''] end ____________________ In the view: <% @genre = Genre.new @genre.id = @id %>

ERB: <%= hidden_field_tag(''users_ids'', @users.collect(&:id))%> OUTPUT: <input id="users_ids" name="users_ids" type="hidden"

Hi, I wonder how to override some tag generators, for example the hidden_field_tag function. By the way, I would be interested to learn how to extend ActionView::Base so new functions would be available to all my views (functions that need _erbout access, so a simple helper doesn''t...help) Thanks -- Posted via http://www.ruby-forum.com/.