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I have a template that belongs to a certain model (model A). I need to call a helper method of a different model (model B). Then I need the helper method of B to call a helper method of model C. I tried using "include" and "require" and using namespaces, but I got "undefined method". What is the way to do it? -- Posted via http://www.ruby-forum.com/.

Hi, I want to update an existing row in table "items" where items.id == 10 I tried this: item = Item.new item.f1 = ... item.f2 = ... ... item.id = 10 item.save I got an error Duplicate entry ... for key 10 : INSERT INTO items ... How do I make item.save to use UPDATE instead of INSERT? -- Posted via http://www.ruby-forum.com/.

Suppose I have three tables - authors, posts and topics. Every post have a topic and every topic has an author, so I have posts.topic_id and topic.author_id. When the author is guest (not registered), author_id is nil. I need to find all the posts (in one query) where every post have all the information of the topic and the auther, so if p is one of those posts I could get the name of the

I want to have Rails 1.1 + Rails 1.0 on the same PC and be able to load my script with a different version each time. Is it possible? -- Posted via http://www.ruby-forum.com/.

I have a name of an attribute and I need to get its value and set a new value for it: x1 = a.foo a.foo = x2 How do I do that if the name of the attribute ''foo'' is a var? I thought about doing this: attribute_name = ''foo'' x1 = a.attributes[attribute_name] a.attributes[attribute_name] = x2 but this is a bypass and I''m quite sure it would cause

Suppose I have a table ''items'' with the attribute ''bool'' which is boolean. There''s an array @attribs which holds :bool and some other symbols of attributes which are not boolean. class Item < ActiveRecord::Base { def attribs [:bool , :x , :y] end } The trouble is that @item.bool? and @item.bool behave differently. If I set @item.bool=5

The Guide to Testing the Rails http://manuals.rubyonrails.com/read/chapter/26#page65 says about CSV fixtures: nulls can be achived by just placing a comma, for example, (1,sclaus,,false,) minus the parenthesis of course. I tried that, but after the fixtures had been created, I checked the value of the field in the DB and instead of nil the value was zero, eventhough the default value for the

class Item < ActiveRecord::Base def initialize(*args) super @x = 5 end def print_x puts @x end end item_new = Item.new item_new.print_x # output: 5 item_find = Item.find(1) # this record is in the database item_find.print_x # output: nil I thought the output would be 5 in both cases, since Item.find returns a new object of Item and so Item.initialize