similar to: How to get count of records from database?

Hi, I am new to ROR. I have created a form with foru fields in ROR. Now its working fine for all CRUD operations. But I want to validate data on form for "validates_presence_of" validation. How to do this? I tried it by putting line "validates_presence_of :description" . But its not working. Its throws error like "undefined method `each'' for

Hi, I have some values on my webpage displaying like 1.22333333333 2.33333344444 2.33377777777 etc. Here I want to display values upto 2 decimal places correct. i.e, 1.22333333333 should be dislayed as 1.22 2.33333344444 should be dislayed as 2.33 2.33777777777 should be dislayed as 2.34 & so on.... How to do this in ruby????? Is there any function??? Thanx in advance. Prash --

Hi, I want to disable textbox in my page so that user can not modify its contents. How can we do that in ruby? Thanx, Prash -- Posted via http://www.ruby-forum.com/.

Hi, I am trying to use method `validates_presence_of'' for validating my input fields on form . I m using it in my action class as follows:- ======================= validates_presence_of(params[:product][:quantity]) ====================== But when I am running my application i m getting error like:- ========================= undefined method `validates_presence_of'' for

Hi, I have an object (@cnt). Now when I am calling "@cnt.inspect" on object it gives me output as follows:- ----output---- [#"3"}>] ----------- Now in aboove output the number between double quotes (3) which is of my interest & I want to display it. How to do that? Actually this is my method:- ==================================== class Tagging < ActiveRecord::Base

Hi, In my application I cant use "to_url" method on any of strings. What should I do if i want to use this method? Is there any plugin needed to download for this "to_url". In my application now when I am trying to use this methos I am getting following error:- ======================================== undefined method `to_url'' for "This is my

Hi, I am using acts_as_athenticated plugin for my rails application. That plugin is using "SHA1" algorithm to encrypt password & stroe it into database. Now in future suppose user requsted his password through email, hhow should I decrypt that password in my application & for sending it through mail? Please help me. I am trying this since last 2 days. But still not

Hi, I want to calculate difference between Current date & previous date (stored in database). The difference should be in days. Hhow to do that?? PLs tell me. Thanx in advance. Prash -- Posted via http://www.ruby-forum.com/.

Hi, I am entering value in textbox ("name") on form. Now name field in database is having ''unique'' constraint on it so that no 2 records with same name allowed in database. Now when I m trying to enter same name into database from my form I m getting following error. ================================ Mysql::Error: #23000Duplicate entry ''Prashant''

Hi, does anyone know a way to get the address and a list of house numbers from a Post Code? Is their an online web service that will do this? I''m creating an app for a chinese take-away and this functionality is important. What do you think is the best way of achieving this? for UK post codes. Thanks Chris -- Posted via http://www.ruby-forum.com/.

I made a brief post on here the other day about this and now I can proudly present the initial release of our unobtrusive_javascript plugin for Rails. We''ll be working with Dan Webb of Vivabit to roll in much of the functionality in his own as-yet unreleased unobtrusive_javascript plugin into a single plugin. This is essentially a preview release and probably not suitable for use on a

Hi, I have 2 tables as follows:- _________________ ________________ ____________ taggings | |stores | | tags | -----------------| |---------------| |------------| --tag_id | |--store_id | |tag_id | --store_id | |--store_name | |tag_name | --user_id | |---------------| |------------| -----------------| Now I want to execute

Hi, I want to upload text file & csv file to server through my rails application. How to do that? PLease tell me if any plugin available for that? If not then how to upload files?? Thanx in advance. Prash -- Posted via http://www.ruby-forum.com/.

Hi, I am new to ROR. PLease tell me what is syntax of creating hidden field in form inside RHTML file. I knonw the syntax for text box (<%= text_field ''product_item'',''product_id'', :value=>product.id%>) But I don''t know syntax for hidden field(like <input type=hidden> in HTML). Please tell me. Thanx in advance. Prash -- Posted via

HI, How to specify default action for particular actioncontroller? Currently when I m typing the URL as "http:\\localhost:3000\actioncontroller_name" , then I m getting the default actin page as list.rHtml. But instead I want my action page to be index.rHtml. How to do it? Thanx. Prash -- Posted via http://www.ruby-forum.com/.

Hi, I am writing following line in my code:- ================= @product1=Product.find(:all, :conditions => ["id = ? ", params[:product][''product_id''+count.to_s]]) print @product1.inspect =========================== So I am getting on console following output. ========================== [#<Product:0x3cd61c8 @attributes={"demand"=>nil,

Hi, I have downloaded "Ruby on Rails validator plugin for password fields". & they have specified that for using it we have to unzip it in plugins directory of your rails application. But I cant find the plugin directory in my Rails Application. Also there is plugin directory in Rails server installation directory:-"C:\local\ruby\freeride\plugins\". & so I have

Hi, In My database there is a table called "categories". Now what name should I specify for my model as per ruby naming convention? Is it "Category"??? Also is it possible to keep database table name singular instead of plural? Please tell me. Thanx in advance. Prash -- Posted via http://www.ruby-forum.com/.

Hi, This is my rHtml page & Corresponding actions & model pages:- ===listform.rHtml================= <h1>Products List</h1> <%= start_form_tag(:action => "add_to_cart")%> <table> <tr> <% i=0 %> <th> Product No. </th> <th> Unit Price </th> <th> Available Qty. </th> <th> Demand Qty. </th>

Hi there I have a for with a couple of text_fields. I''m doing some validation via the model and when the validation "works" I get there was an error on blah blah the problem is the form is erased and I have to fill up the form again! I saw that scaffold keeps the form filled when the validation "works" but I dont know exactly what''s making it happen! I would