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Questions tagged [rails-models]

a component of the Rails framework that holds the state of an object and is responsible for enforcing business rules and persisting the object.

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Rails PostgreSql store multidimensional array

Is it possible to store a multidimensional array in a column. I have tried the following and received the error below coming from creating the records column. migration_file.rb create_table :balance_sheets_details do |t| t.string :headers,…
Cody Elhard
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Assign user model to one of two models?

I have a user model that I want to assign to be teacher or student( teacher and student are two separated model ) because if the user signup he would have different registration fields depending on if he is teacher or student. User can be a teacher…
kubet
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Rails Updating Data in one Model from another Model's Controller

I have a User model that has billing_id. I have Order model that runs transactions with a payment gateway which returns a billing id I'd like to save into the billing_id column on the User model. I think I am getting the basics of MVC architecture…
railslearner
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query in rails3

In another question that i asked recently i got a really good answer and the code worked... But i do not know exactly why it works... Now i have a similar problem, but don't know how to solve it...? What i have: Models users questions (with…
Thijs
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rails3 model question

i moved from php to rails3, and i still think it was a good decision! Anyway I have some models: users questions answers question_id votes user_id answer_id model for users: has_many :questions has_many :votes model for questions: belongs_to…
Thijs
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Using models and migrations in code

I try to wrap my head around a problem I try to tackle in a Ruby on Rails application, but after three days of searching and trying, I seem to get tunnel vision and am stuck: I have products and shops and a product can be sold by many shops. The…
Art Fisher
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Rails model references question

class CreateMatches < ActiveRecord::Migration def self.up create_table :matches do |t| t.integer :result_home t.integer :result_away t.references :clan, :as => :clan_home t.references :clan, :as => :clan_away …
methyl
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All table fields are not showing? (Rails/MySQL)

I've created new fields, "first_name", "last_name", "email", and "password" in the model generated migrate file as shown: class CreateUsers < ActiveRecord::Migration[5.2] def up create_table :users do |t| #added fields …
Brennan
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Trouble creating a new record in Rails with Select Boxes and Foreign Keys

Ruby on Rails newbie here. TL;DR: When trying to create a new record, I get an error message saying my foreign keys must exist. I'm using Select Boxes on my view. Need help. I am creating a requests management system for our own support staff here…
Lucas Borges
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Scoping f.collection_select

I've got a model that I'm using a collection_select on and I'd like to scope it to show only accounts that are open. To accomplish this, I've added a boolean field to my account model, defaulting to false. Here's my attempt at that in my account…
PSCampbell
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Rails - How to load nested attributes by condition while loading parent?

I have two models namely Invoice and InvoiceDetails. An invoice has many invoiceDetails. Now when I load an invoice, it also loads up the invoiceDetails attributes by association. The invoiceDetails model has an attribute is_hide, I want to load…
Paras
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Update record by conditions Ruby on Rails

Can we update a record by conditions without check the record first?
Aditya Hadi
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How should these Rails Models be associated?

I have over thought this to the point that I'm only getting confused now. I have a Rails app with the following as models: User, Site, Tutorial, TutorialStep. A user can create many tutorials and each tutorial has a site it lives on, and each…
stevenpslade
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Highest rating comment in rails

I'm trying to show the comment with the highest rating in the product show page but it shows # instead of the comment. Any ideas why? #comment model class Comment < ApplicationRecord belongs_to :user belongs_to :product scope :rating_desc, -> {…
BoB
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rails_admin: changed relationship, form not correct

I have a relationship between compositions and languages. One composition should be written in one and only one language. My schema.rb contains the following lines: ... create_table "compositions", force: :cascade do |t| ... t.integer …
Simon
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