similar to: mutiple select

Rails documentation gives examples of using option_groups_from_collection_for_select with two tables/objects. How could it be done with one? Example that almost works: I have a form to enter address from both the United States and Canada. It has the following: ====new.html.erb==== <%= select_tag( :state, option_groups_from_collection_for_select( State.countries, :country,

I can''t seem to figure out how to validate a few fields some1 please help me out model--------- class Record < ActiveRecord::Base validates_presence_of :sw, :flex end controller------------ class RecordController < A;;icationController def new @record = Rrecord.new @product = Product.find(params[''product_id'']) end def create

hello: I have built a project with Instant Rails.Now only a database and a scaffold based on a product model have finished.But when i inputted "../admin/list" in my browser,i found my chinese characters cound not display normally.Then i made five steps: 1 ajusting encoding in my browser menu 2 in "C:\InstantRails\conf_files\my.ini"directory,making sure

hi i have two models: GeoRegion & GeoRegionSub which have a has_many relation to each other. how can include the has_many relation in the collection_select helper? i want to have that dropdown where the parent is in black and the children indented. <%= collection_select :dl,:parent_id, GeoRegion.all.????, :id, :title %> thx -- You received this message because you are subscribed

Dear R helpers I would like to plot vertical reference lines for yearly averages the variable being plotted. In this case there are three years 2002, 2009 and 2010 for a variable Resc_Gt. I've attempted to get the 2002 mean plotting (2.27) using the 'abline' command but no joy. Ideally I would like to be able to compute and plot the means of the three years automatically using a

Hello, Has anyone out there encountered a problem like this: xyplot(Plasma ~ Serum | Analyte, data = sp.df, aspect = 1, layout = c(1, 1, 200), scales = list(relation = "free") ) Gives the error: Error in pretty(x[is.finite(x)], ...) : x must be numeric On the other hand, this works (but I don't want the default of having everything on the same

I have an app that has two models -- products and details. I''m building a form that allows a user to create a new product and specify a description, etc. The form needs to allow for creation of multiple items in the details model/table. for example, I have a block of form items that collect info for the men''s version of the product -- inventory count for each size, etc. And

Dear all The following process is about trying to do the " live migration at the same time with 5 Virtual machines ", but there is somthing problem with it. Process: yogi-pc2: # xm migrate --live vm01 pc2 & xm migrate --live vm02 pc2 & xm migrate --live vm03 pc2 & xm migrate --live vm04 pc2 & xm migrate --live vm05 pc2[1] 29983 [2] 29984 [3] 29985 [4]

hi everybody, how I do to set a mutiple virtual host on httpd configuration? I need to host multiple sites with the same IP address what must be the httpd.conf configuration file and into /etc/httpd/conf.d/? thanks in advance kind regards, ./p

Hi All, I''m trying to use a form to upload a photo that I will save using attachment_fu. I''m very new to Facebookr so I apologize if this is covered somewhere, but I''m kind of stumped. Here''s what I''m doing now: <% facebook_form_for(:my_object, :url => { :action => ''upload_photo'', :id => params[:id] }, :html => {

I can use a USB modem with asterisk to connect to the PSTN network right? It'll serve the same functionality as an FXO card? Also, any idea if I can get these modems with mutiple ports (12 or 24)? Thanks, Doug ____________________________________________________________________________________ Get your own web address. Have a HUGE year through Yahoo! Small Business.

I didn''t get a chance to go to this meeting debating WebObjects Vs Rails, but here''s a report about it: http://desperatepundit.com/blog/cremes/technology/2006/02/15/WebObjects-versus-Ruby-On-Rails.html I don''t get what he''s saying, hand coding the model? yeah, you COULD ... but what about script/generate ??? And is that so what he said about security? --

I have a mock object (Person) that is associated with another object (my_object) through a belongs_to association. When I check whether my_object is valid (my_object.should be_valid), I am getting an error like the following: Mock "Person_6338" received unexpected message :marked_for_destruction? with (no args) Checking the list of methods on the mock,

I''ve asked this before, but never got a working response. I''d like to store an object inside a binary field in my db. So I''d have a class like this class MyAwesomeClass def do_something_awesome ... end end then class MyRecord < ActiveRecord::Base end the table my_record would have a binary field, my_object, that would store an object of

Hello, I am having some difficulties with ActiveRecord. What I want to do is to get a collection of SubjectGroups for using with option_groups_from_collection_for_select My Code: ======================================== class Subject < ActiveRecord::Base has_and_belongs_to_many :users belongs_to :subject_group end class SubjectGroup < ActiveRecord::Base has_many :subjects end

Dear list, i have this problem: how to pair a graphic.png and a table in R2HTML ? The better showing of a mutiple analysis is sometimes to mate graphic and table Can anyone help me in this task ?? In the example below graphisc and table are subsequent and not pair.. directory=getwd() myfile<-file.path(directory,"testHTML.html")

Hi All, I am going to clean up those doxygen links on LLVM Programmer’s Manual [1], some are lost and some are too old. However, I am confused on which doxygen link I should pick up. I see there are mutiple links exist on LLVM web site for LLVM classes. Take class Statistic as example, there are: - http://llvm.org/doxygen/Statistic_8h-source.html (the oldest one, I believe it's

I'm trying to set up an Asterisk system for a small office, and one thing I haven't figured out yet is how to best provide reliability. One way to go seems to be a T1 for all my incoming phone lines. What if that T1 goes down? Can I use mutiple POTS lines in conjuction with a T1, all connecting to my Asterisk server? What if my Asterisk server fails? Should I use two Asterisk servers,

i just found out i can pass mutiple parameters from views like <%= link_to doctype.name, :action => "show_towns", :id => doctype.name, :id2 => doctype.id%> silly me, i always had the impression that i could only pass 1. i guess i dont have to use sessions after all for my site. is there anything wrong with this? basically instead of the user filling out

Hi All.. I am new to ruby on rails.I want set the unquie on two fields. Means in one model three fileds are there. 1.Id, 2.C-id 3.Q-id I want set the unquie on C-Id,Q-Id combindely on the model validations Can u give me advice? I tryed with statemwnt validates_uniqueness_of [:c_id, :qid] But it now giving the proper results Regards, Ramya -- Posted via http://www.ruby-forum.com/.