similar to: How to check if a given string is a valid float value or not

Hello -- I would like to setup a system where a user can generate a "ticket". This ticket will be stored indefinitely. The ticket will be sent to someone who does not have an account on the system and therefore, I would like to ensure some level of security in that ticket number. Basically, the other user would receive an email like: --- Please click on the link below to view this

Hi all, I just noticed that in ActiveRecord::ConnectionAdapters::Column.type_cast[1] (and type_cast_code[2]) the type casting for float columns simply does value.to_f, whereas all the others have a rescue or call out to a method, the default implementations of which have rescues or enough logic in that I don''t think they''d fail. Imagine the following: create_table :vehicle do

Have in a module in ./lib: module Pricing def sell_price (cost.to_f)/((100-(margn.to_f))/100) end def sell_price_inc ((product.cost.to_f)/((100-(product.margn.to_f))/100)*1.14) end def charge_excl (sell_price).to_f * quantity end end A model product: class Product < ActiveRecord::Base include Pricing attr_accessible :name, :code, :cost, :company_id, :margn

Hey Guys, Again, I am just learning Rails, so I am asking advice here. I have a model called Company which has many Owners. The Owners model indicates the name of the owner and their share (as a percentage) of the company. The total shares for any one company can not be more than 100%. So if I have 10 owners each with 10% of the company and I update one of the owners and set their share to 11%,

Hello-- There must be a better way to do this. I have a class method in my model that finds averages and does a few calculations using find_by_sql. The problem I¹m encountering is that all computed columns from MySQL come back as type string. E.g., def self.find_averages(domain_id) if @@domain_average return @@domain_average else @@domain_average =

Le''s say that I have a table called people and the column middle_name is nullable. If the user enters say blank or empty space then in the database it is recorded as empty space. I would like in all my models all empty spaces to be recorded as null. I guess I can write a plugin which will do so for all the models but I''m sure something like that should already be existing.I

validates_presence_of :fname results in the error message "Fname can''t be blank". What I want is "First Name can''t be blank". I could do this def validate errors.add_to_base("First Name can''t be blank") if fname.blank? end I find this clunky and I have to put everyrhing in the validate method. Is there an easy to get what I want. I

Hi i''m using ferret to enable geographical postcode. I take a postcode and distance in miles from the user, strip off the outcode and then retrieve the associated x y coordinates in metres from the db. Then i get two temp x''s and y''s and search for all results that are within the box, see code below. Problems start to occur when i search on big distances so for

Hi I have the following values pActualCost = 33.00 pPaymentCost = 29.99 So this calculation should leave me with 0.01 pPaymentDifference = pActualCost - pPaymentCost however when doing this in rails, it returns 0.00999999999999801 has anyone got any suggestions to whats going wrong and how I can correct this Thanks Scott -- Posted via http://www.ruby-forum.com/.

Hi, I installed login generator using gem. It''s installed and it''s working fine. I wanted to browse the source code of login generator installed by gem. I couldn''t find the source code anywhere. Thanks. -=- Neeraj _______________________________________________ Rails mailing list Rails-1W37MKcQCpIf0INCOvqR/iCwEArCW2h5@public.gmane.org

Dear all, I wrote a wrapper to a FORTRAN program using R. The main program uses a text file (~200 lines) as an input describing the simulation to be run. I typically generate the file once with the right parameters using a combination of file(), paste(), cat(). This is fine, and it works well, however I then need to update only a few values in the file many times (~200 times,

In the ''basecamp'' product from 37signals if I search for ''ruby'' the I get a bunch of results. In the search result page the search term (ruby in this case) is highlighted. I was wondering how to accomplish the same. How to highlight the ''search term'' in the search result? Is there any already existing utility that I could use? Thanks.

I intend to override pagination_links method. I added following lines of code in application_helper.rb module ActionView module Helpers def pagination_links(paginator, options={}, html_options={}) raise("boom!!") end end end But my code is not executing my code. The view is still using the method pagination_links from rails. What''s the correct way to override

I''m stuck in a catch-22 type problem. I have an insert form for a table that uses the validation in the model. i.e. When you click submit on the form and haven''t filled in the required fields then you get the nice rails error messages saying "field can not be blank". This works fine until I introduce some more logic. What I''m trying to do is to validate

class Event < ActiveRecord::Base belongs_to :venue belongs_to :category end class Venue < ActiveRecord::Base belongs_to :city end class City < ActiveRecord::Base belongs_to :state end I want to retrieve all event records belonging to a state. Coming from hibernate background I tried something like this: def self.list_for_a_state(state_id) find_by_sql(["select e.*

I have following line in route.rb #event info for an event name map.connect ''event/:name_url'',:controller => ''home'',:action => ''event_info'' It causes a URL like http://localhost:3000/event/_jewels_exhibition_ to be sent to the home controller with action as ''event_info''. I am trying to test this action. My first

I want to create a random string of length n that is made up of characters and integers. Is there a function in rails or ruby that allows me to do this? Thank you my friend :-). John Kopanas http://www.kopanas.com ===================================================================== http://www.soen.info - source of the freshest software engineering information on the net

My code is something like this. class FirstController < ApplicationController def foo #some processing render (:controller => ''second'', :action => ''index'') end end I tried using both render and redirect but it seems it''s not possible to send the control from within a controller to some other controller. Am I missing something

Hi, Just thought it was weird that Ruby doesn''t automatically cast ints to floats. Seems so un-rubyish irb(main):006:0> 12/16 => 0 irb(main):007:0> 12.to_f / 16.to_f => 0.75 Jeroen

Hi, I have some problems with an application where I''m using custom accessors to do currency conversions. In my model, I have a price attribute in the database that stores the value in cents, to avoid future problems with float arithmetic and round. But at the views, I would like to show the price in euros, with decimal for the cents. So I defined a new attribute called price_in_euros,