similar to: question about records count.

Hey guys, is there a validation that essentially acts the opposite way of "validates_presence_of". That is, the attribute in question must be nil, or blank, non-existent. If not, what''s the best way to prevent a user from altering a web form attempting to submit data to a field that they should never have access to? Thanks! -- You received this message because you are

hi all, has_and_belongs_to_many :cows has_and_belongs_to_many :milkmans i am using has_and_belongs_to_many in my app.I know this will create third table internally cows_milkmans in mysql database. when i migrate develpoment database i have table cows_milkmans. Good no Problem till now. Now a problem start When i migrate test database there is no such cows_milkmans table is present..

In Rails < 3, I could have a validation on model such as: validates_presence_of :name, :message => "some custom message here" If I try something similar in Rails 3: validates :name, :presence => true , :message => "some other custom message" obviously, it throws an exception. So the question is, in Rails 3, how to you give a simple custom message? Do I need to

I am trying to get hourly counts of orders between different price ranges from my database. I''m thinking there has got to be a better way than looping through each record and checking if the created_at time fits between hour 1, 2, 3, 4, etc of the day and then returning the count. Currently I am displaying just a total of the days sales that are between different dollar amounts this

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Hi. I''m hoping somebody can tell me that I''ve just gotten my syntax wrong and I can in fact do what I want to do. I''ve got a Group, and a Group has_many Campaigns. Campaign has_and_belongs_to_many Users (and, naturally, vice versa). So I''ve got a groups table, a campaigns table (that has a group_id), a campaigns_users join table (with campaign_id and

trying to set up a "has_and_belongs_to_many" relationship would very much appreciate the help, not sure what im doing wrong at all. Scheme.rb class Scheme < ActiveRecord::Base validates :schemename, :presence => true belongs_to :user has_many :levels, :dependent => :destroy has_and_belongs_to_many :works end Work.rb class Work < ActiveRecord::Base

Hello, I''m trying to insert into my migrate but when I try on rails console this error shows: 1.9.3-p0 :001 > group = Group.new => #<Group id: nil, name: nil, description: nil, created_at: nil, updated_at: nil> 1.9.3-p0 :002 > group.name = "Group Name" => "Group Name" 1.9.3-p0 :003 > group.description = "Description" =>

I''ve setup two models, 1 and 2, that are associated by has_and_belongs_to_many. I''m trying to get an attribute from model_1 to use in a method in model_2. When I use the code below, I get an error saying ''undefined method model_1_id''. What am I missing? Thanks! Model_2.rb Class Model_2 < ActiveRecord::Base ... has_and_belongs_to_many :model_1 def

Hi! Maybe, you know thing such as odesk tests. Here will be place we discuss about some questions of them. I can''t understand what they want. (Rails 3) 1.Screenshot-3.png. What is answer? I think d, but I can''t find Net::HTTP.open function in API. 2. Screenshot-5.png. I can''t understand what they want from me. I work only with RSpec 3. Screenshot-6.png. I start to

I''m a rails newb and have been Googling about this, but I''m still stumped. Not showing everything here, but basically it should be a pretty common setup so I''m sure others know what I''m doing wrong. - A meter can belong to many meter_groups - A meter_group can have many meters. - A user can ''subscribe'' to viewing a meter_group (Subscription)

class Category < ActiveRecord::Base belongs_to :sector has_and_belongs_to_many :suppliers validates :sector, :name, :presence => true As you see I have validates :sector, :presence => true. When I create a new Category, if I don''t select a sector I have an error page with the message: Couldn''t find Sector with ID= But there is the validates, why I don''t

Is there any way to clear what''s in there? This happens any time flash[] is in my code. It can be setting or reading a value. I''ve tried commenting out all uses of flash in my code to get a few different pages to load, thinking this would clear the values, but no luck. If I get into the debugger, a p flash or pp flash will give a ''Stack level too deep'' error

Hello, I have a question about HABTM and counting records. I have these models class Sort < ActiveRecord::Base has_and_belongs_to_many :reports end class Report < ActiveRecord::Base has_and_belongs_to_many :region has_and_belongs_to_many :subjects has_and_belongs_to_many :sorts end And i would like to get a count like @sort.reports.count The problem is get this query:

Really no idea what''s up... class Auction < ActiveRecord::Base has_and_belongs_to_many :categories end class Category < ActiveRecord::Base has_and_belongs_to_many :auctions default_scope order(''title'') scope :active, where(:active => true) end class CategoriesController < ApplicationController respond_to :html, :json # GET /categories/:id

Hello, I have two tables with association HABM, projects and users, and in projects I want to show all users that was associated to the project. I have try with this: <%= select( "user", "id", Project.all.collect { |p| [ p.name, p.id ] } ) %> But only show all my projects, but Iz don''t know who show only the user in a determinated project. class Project <

hey, i my database i have users and groups, each user can get in different groups my db structure: table groups: id, name, basegroup, firm_id table users: id, firstname, lastname, email table groups_users: group_id, users_id my relation is a many to many: class Group < ActiveRecord::Base has_and_belongs_to_many :users end class User < ActiveRecord::Base has_and_belongs_to_many

Hi everyone, I have the following problem, maybe someone can help me figure out what to do. To simplify my situation, I''m going to make an example of what I need, this is not the real app structure. Let''s suppose we have three models, Library, Author, Book. Manager has_and_belongs_to_many :area_managers AreaManager has_and_belongs_to_many :managers has_many :employees

Hi, I have a has_and_belongs_to relationship between 2 objects, order and product. I''m getting a foreign key violation when trying to delete Order. Is there a special way of deleting orders without deleting products? ("has_many" has :dependant => :delete_all.... does "has_and_belongs_to" have something similar) Trying: Order.delete_all Getting: Mysql::Error:

Are there any rationalies to make queries obtained by joining scope to be readonly? I read some old posts (pre-rails3) that joins adds additional columns to record so that ActiveRecord doesn''t know how to update that fields, but actually I don''t see that fields. For example I write model class Order < ActiveRecord::Base has_and_belongs_to_many :executors, class_name: