All Questions
Tagged with database ruby-on-rails
3,903
questions
0
votes
0
answers
44
views
Ransack query is returning wrong quantity of objects
I have this ransack query:
SchoolTeacher.ransack(school_classrooms_id_eq: 1134).result.count
it should filter objects of SchoolTeacher where classroom_id os 1134.
SchoolTeacher belongs_to School.
...
0
votes
1
answer
58
views
Rails lockbox and blind index, unable to access encrypted field
I have lockbox v1.3.3 / blind index v2.3.2 gems installed (have to use this version, can't upgrade at the moment).
I am using rails 6.0.3.2 and ruby 2.6.9.
I followed these steps:
https://ankane.org/...
- 21
0
votes
1
answer
62
views
Issue of User Duplication in Rails Application
I'm using
'rails', '~> 5.2.4', '>= 5.2.4.1'
ruby '2.7.1'
and gem 'pg', '>= 0.18', '< 2.0'
I'm encountering an issue in my Rails application where some users are being duplicated in the ...
- 21
0
votes
1
answer
50
views
How to write query for a condition on join table
I am trying to write a query using Rails ORM. Suppose there are two models.
class College
has_many :students
class Student
belongs_to :college
The Student table has a column named result which can ...
- 31
0
votes
1
answer
248
views
Rails ActiveRecord Rollback didn't happen where it is expected to happen when there is an exception
Let's say I have a object named book.
once book.save! is given all the model callbacks will be triggered according to the rails order defined.
In my case API request timeout exception happened in the ...
0
votes
0
answers
61
views
Rails 6 Active Storage Image Variants
I am encountering an ActiveRecord::NotNullViolation exception when trying to create an image variant using ActiveStorage in my Rails application. The issue arises specifically when I attempt to ...
1
vote
1
answer
62
views
How to add validation only to an associated table in active record
I have an address table in rails:
class Address < ApplicationRecord
validates :street, :city
presence: { allow_blank: false }
end
the table is associated with several tables and I ...
- 426
0
votes
1
answer
31
views
How to connect in a visual fashion to MySql that is behind a reverse proxy?
Before of the Rails Kamal-Docker advent I was used to connect from my local machine to the remote MySql production database by using MySql Workbench. Now I've my database on the remote server placed ...
- 15.1k
0
votes
1
answer
45
views
Tidy Up Rails Postgres Production Database
I have moved a column (called score) from one table (contract) to another (weekly_record). I created a new migration for weekly_record. However I removed it from the original table 'by hand', ...
1
vote
2
answers
64
views
Rails edit.html.erb form not pre-loading data for inputs with empty select option
I have a rails application that has 2 forms that edit the same table. The first form is in new.html.erb for basic information filled with text fields. Then the second form is edit.html.erb which is ...
- 1,113
0
votes
2
answers
75
views
How can I prevent n+1 issue from array that is generating additional conditions?
I'm facing n+1 issue when using conditions on array that comes from includes query.
Here are the following tables:
rems
|id| |name|
1 aaa
2 bbb
rem_correlatives
|id| |rem_id| |name| |deleted| |...
- 1,149
0
votes
1
answer
47
views
Ruby on Rails: How do you create a `has_one` relationship with duplicating primary keys?
I have 2 Tables:
Dogs
- id (primary key)
Cats
- id (primary key)
I would like to introduce a third table let's say Collars, that both dogs and cats have:
Collars:
- id (primary key)
- size
...
- 127
-1
votes
1
answer
73
views
how to design db schema for if-else-then condition
first of all, I am sorry in advance for my bad english. It would be difficult to understand what I'm trying to say, but I will try my best to explain what i want to ask.
**my question is how to design ...
-1
votes
2
answers
115
views
Optimizing Rails API Controller for Improved Performance
module Api
module V1
class AngularDashboardApisController < BaseController
include RolesHelper
before_action :verify_auth_token
before_action -> { verify_user_permission(...
0
votes
1
answer
45
views
I want to sort data into descending order in rails app and I used sqlite3 database. So is there any order_by available in rails
/home/dell/.rbenv/versions/3.2.2/lib/ruby/gems/3.2.0/gems/activerecord-7.0.8/lib/active_record/dynamic_matchers.rb:22:in method_missing': undefined method order_by' for User:Class (NoMethodError)
Did ...
