similar to: validates_associated / error_messages_for

Quick question - how come the function.prototype.bind doesn''t allow for return values? Am I missing some basic understanding of how this works? I searched and couldn''t find an answer. Specifically, I''m binding an object method to an existing form''s onSubmit, but it still actually submits the form, refreshing the page - which is not what I want. If change

Recently, I''ve started to write unit tests for some of my scripts. In general,it''s no worse in JavaScript than in Ruby or Java. I didn''t have the courage to try Selenium, but had a look at JsUnit. Unfortunately, in Konqueror it produces unfathomable errors and in Firefox it is slow beyond imagination. Anyway, writing tests for functions that are computational or

Currently, pages generated by Rails tend to be sprinkled with JavaScript. This happens, because the various helper methods work only locally and simply append to the output. In order to hide the JavaScript away, rendering would probably have to be changed. A way I can think of is that a page-specific script is included in the head of the document and JavaScript code is not written to the

Thomas, currently the script.aculo.us scripts have some workarounds for Safari that should be extended to more generally cover all khtml-based browsers, Konqueror in particular. In prototype.js, there is a workaround for an addEventListener bug that affects Konqueror as well as Safari, controls.js has a similar workaround, and the special case in dragdrop.js doesn''t hurt anyway. In

My application is built on Rails and MySQL. It will only be accepting US formatted dates as input, however both Rails and MySQL are oriented around ISO the format. I know I can convert a good portion of the entries using ParseDate::parsedate but it does not appear this is how the conversion is taking place when data is being transferred from the params hash into model members. Say I have a field

Hello everyone, It seems that the answer to my question should be obvious, but I''ve not yet found a way to do what I want. Any advice on the best method would be greatly appreciated. Have the following database table: CREATE TABLE datasets ( id int not null auto increment, name varchar not null, value varchar not null, year varchar not null, state

Hello people, I''d like to detect whether an attribute of a model has vaildates_presence_of applied to it so I can automatically apply a mandatory (*) to the field...it doesn''t look easy...any ideas? Cheers, -- Dan Webb http://www.danwebb.net

I''ve noticed that using several TimedObservers (prototype.js) on a page to watch for changes to text fields (haven''t tried forms) can have a non-negligible effect on the CPU cycles used by the browser process. Nothing dramatic, to be sure, but unnecessary. Autocompleter.Base (controls.js) follows a smarter strategy to watch for changes. Currently this functionality is tied

I have several tables for enumerations. They all have the same content: id, name, position. I''d like to avoid the tedious work of defining a class for each one explicitly. Not least, in order to avoid clutter in the model directory. Here''s what I''ve come up with: class EnumRecord < ActiveRecord::Base def self.define_enums(*enums) enums.each do |spec|

Hi -- if I have a class that declares ''validates_associated'' on a number of other classes, is it supposed to be relatively easy to replace a collection of them? Not to overwrite them in the DB, but simply to assign them to their retrieval method, so that they can be included as part of the owning class'' validation. I mean like: children_with_potential_errors =

I just put this up on the wiki, and thought I''d share in case it''s useful to anyone else. This is handy if you don?t want to wrap your input elements inside a div when an error occurs, but instead want to add some sort of CSS style to fields with errors: ActionView::Base.field_error_proc = Proc.new do |html_tag, instance| msg = instance.error_message error_style =

Quick question. Say I have a geographical database with counties and zip codes where counties have and belong to many zip codes. zip_codes (id, zip_code) counties (id, name) When I create the association table, the Rails way says to do the following: counties_zip_codes (county_id, zip_code_id). However, given that zip_codes.zip_code is itself a candidate key, I would much prefer to do the

I am regularly running into a problem where I can't seem to figure out how maintain correct data order when selecting data out of a dataframe. The below code shows an example of trying to pull data from a dataframe using ordered zip codes. My problem is returning the pulled data in the correct order. This is a very simple example, but it illustrates a regular problem that I am running into.

i've search the email archives, searched the documention of various map packages and done an R-site search, but have been unable to find direct resources for creating maps of the US that are colored or annotated or ... by zipcode data. For example, create a map of the US and color each zipcode region by its population using two vectors z,p containing the zipcode and population,

I am interested in locating a script to implement a sampling scheme that would basically make it more likely that a particular observation is chosen based on a weight associated with the observation. I am trying to select a sample of ~30 census blocks from each ZIP code area based on the proportion of women in a ZCTA living in a particular block. I want to make it more likely that a block will

Hello, I have a situation where an ''employee'' belongs to a ''department'' and have setup the relationship as follows. class Employee < ActiveRecord::Base belongs_to :department, :foregin_key => "department_id" validates_associated :department_id end class Department < ActiveRecord::Base has_many :employees def validate_on_update

By trial and error I seem to arrive to the conclusion that 1. Validation recurses through has_many by default and a root save! call raises an excepcion if some child no matter how nested is fails validation 2. Validation does not recurse through has_one by default and you can change this with validates_associated, in which case exceptions behave like above

Hi, I have a class (say Parent) that has many of two other classes, say FirstChild and SecondChild. These could look like this: class Parent < ActiveRecord::Base has_many :first_children, :dependent => true has_many :first_children, :dependent => true validates_associated :first_children validates_associated :second_children end class FirstChild < ActiveRecord::Base

Hi, I think I''m missing some fundamental information here so hopefully someone can help me. I have a model Club which has many members, members of course belong to a Club. I''d like to ensure that when a members is saved (saved/created/updated) only valid club_id''s are accepted. I have a Club model (simplified) like this: class Club < ActiveRecord::Base

Here is my model: class Account < ActiveRecord::Base has_many :users, :dependent => :destroy has_many :bus belongs_to :currency has_many :mylogs, :dependent => :destroy has_many :batchuserdefines, :dependent => :destroy has_many :materialuserdefines, :dependent => :destroy has_many :materials has_many :inventories has_many :batchs has_many :courses has_many