Tags down


How to remove an object from the ActiveRecord::Relation object

By : leonardo12
Date : October 18 2020, 06:10 AM
this will help CarStatusDefinition.where.not(keyword: "USED") will filter out all the CarStatusDefinition with keyword USED
code :

Share : facebook icon twitter icon

Using the Map function to remove a object from an activerecord::relation

By : 김영찬
Date : March 29 2020, 07:55 AM
With these it helps If I understand clearly you want only the completed checklists
Basically you must return the checklist when it's true and nil when it's not, then eliminate the nils in resulting array with compact... which is the work of select
code :
checklists.map do |checklist| 
  # ....
  checklist unless not_completed
checklists.select do |checklist| 
  # ....

Is there any before_update hook for an activerecord object if the object in the child relation is saved and touch is set

Date : March 29 2020, 07:55 AM
To fix this issue I have , Try this before_update :update_popularity

ActiveRecord Relation: append objects inside the ActiveRecord::Relation Object

By : iCeDev
Date : March 29 2020, 07:55 AM
I wish this helpful for you If someone has a better way of doing this I would love to know.
I got it to do what I wanted to do by appending to a regular array, and then before returning it, I transformed it into an activerecord::relation so that I could use activerecord methods on it. It would be nice If I could do the whole thing with the same activerecord::object:
code :
locations = []
if true
  #append onto that locations array all the location objects that are partner locations
  locations = locations + Location.partner_locations
if true
  #append onto that locations array all those location objects those locations that are education locations
  locations = locations + Location.education_locations
return Location.where(id: locations.map(&:id)).order(:name)

Append an ActiveRecord::Relation object with single ActiveRecord object

By : user6933928
Date : March 29 2020, 07:55 AM
I hope this helps . I need to append a single ActiveRecord object onto a loaded ActiveRecord::Relation. , As a temporary fix, I have done the following:
code :
books = Book.where(author: User.find(params[:user_id])).pluck(:id)
books << Book.find_by_name("One More Book").id
@books = Book.where(id: books)

How can I remove and return the first element in an ActiveRecord relation object?

By : Arxic
Date : March 29 2020, 07:55 AM
I hope this helps you . I want to remove and return the first element in an AR relation object. I used shift, but it does not remove the object. , You can pretty easily turn it into an array first.
Related Posts Related Posts :
  • Rails + Vue.js - Using Ajax to update Vue component
  • Has_many association with specific values: how-to?
  • Convert simple text into html honoring newlines whitespaces and tabs
  • How to Parse LARGE JSON files with formating error
  • How to get current user in Rails model
  • Enviornment broken after uninstalling Rails 6.0.0.rc1
  • ES6 syntax, harmony mode must be enabled with Uglifier.new(:harmony => true
  • Capybara can't find element if JS is present
  • Find source location of an aliased method
  • What is the shortest way to write condition variable in rails view template?
  • Where does http protocol rests in rails framework?
  • rails webpack compilation hangs in production at 78% [0] chunk asset optimization TerserPlugin
  • Aws CostExplorer Api giving exception using ruby sdk
  • Rails 5.2.3 converting all params datatype to string when testing using rspec
  • RegEx for client-side server in Ruby on Rails
  • How does assigns know where to look for the instance variable in integration tests?
  • Rubocop -> Use a guard clause
  • In Rails 5 where should I put my javascript_include_tag?
  • How to run docker compose up for production environment
  • param is missing or the value is empty: But parameter IS there with a value
  • What is cost/benefit of object.models.find() vs Model.find() in Ruby on Rails (Mongoid)
  • User is getting session from other logged in user with Rails / Devise
  • Avoiding n+1 has_many children should remember parent
  • Ruby/Rails How to parse datetime from russian string
  • How to remove substring that may appear within a string?
  • Azure AD authentication with Rails and devise
  • How to spy on a method called at class level on ActiveRecord model?
  • Rails: devise_invitable not accepting variables
  • How to do an RSpec oneliner to test a :count change
  • Rails 5 left_outer_join with specific saved ID
  • Deploying Rails App on Digital Ocean and when running cap production deploy:initial I get back ---> 01 ArgumentError:
  • How do I seed data of a class which requires the user_id of the current user?
  • Rails multiple select on array attribute not working
  • How use local views built with gem devise in rails app?
  • How can i display a particular product?
  • Rails remove subarray from array
  • Ruby : How to record an object and reuse it for tests?
  • Convert an array of hash with symbols
  • what class is returned after a delete action in rails
  • Nginx passenger integration mode always require Passengerfile.json file?
  • how do i redirect to home page(root )when user signed out?
  • Ruby two strings in an IF condition
  • How to obtain constant memory usage when migrating a Rails application from mongoid (MongoDB) to ActiveRecord (Postgres)
  • Custom strategy for Omniauth
  • Show SQL ActiveRecord queries in rails console using SemanticLogger gem
  • How to handle data with two has_many associations
  • Skip Current Migrations but Apply Future Ones
  • Is it possible to email users who are @mentioned in rails ActionText?
  • Reset master to an empty state
  • Ruby .round() function rounding off the values, but storing the original value only in database
  • Upgrading from Rails 4.2.1
  • Syntax Error for Ruby on Rails "(" unexpected
  • i am trying to show my posts title on show page but it shows this error again and again . i am beginner in rails
  • How do I create a new path/route in Ruby and then link to it?
  • Rails Migration To Add Index To The Difference Between 2 Columns
  • Problem accessing images uploaded to heroku thru RoR application
  • How to fix "Illegal Argument Exception" when creating an Elasticsearch index for a Rails model?
  • Rails / Ruby how to always show decimal precision
  • validating attribute presence with condition
  • how does has_many :through work with only two models?
  • shadow
    Privacy Policy - Terms - Contact Us © 35dp-dentalpractice.co.uk