ruby-on-rails-5

问题 params.require(:task).permit(:summary, comments_attributes: [:id, :content]) I want to add user_id and project_id in comments_attributes. user_id = current_user.id project_id = project.id I tried with below but not working params.require(:task).permit(:summary, comments_attributes: [:id, :content]).merge(user_id: current_user.id, comments_attributes: [user_id: current_user.id, project_id: project.id]) Please help me how can I do this? 回答1: you will have to use deep_merge params.require(:task)

问题 Hi I am trying to run the rails app inside a docker in production mode. it is throwing below error. Message from application: Invalid option key: raise_on_unfiltered_parameters= (RuntimeError) Because of this my application server is not started and i am getting error page. Dockerfile: FROM docker.aws.com:443/consumertech/ruby-nginx-lua-anti-scrape:latest # copy app source RUN mkdir -p /data/app/my-app RUN mkdir -p /data/app/my-app/log RUN mkdir -p /data/app/my-app/tmp RUN touch /data/app/my

问题 Is it possible to mount multiple ActionCable cables in the same Rails application? For example as such: #routes.rb Rails.application.routes.draw do ... mount ActionCable.server => '/cable' mount ActionCable.server => '/cable2' end I am aware I can have multiple channels using the same cable , but I require to use different authentication methods for my channels. From my understanding, this is not possible using the same cable. Thanks for your help. 回答1: As elaborated in Using ActionCable with

问题 I have just added devise to my shiny new Rails 5 app. All's good and dandy until I try to add a username to the Devise user model. Everything worked until I ran it and went to localhost:3000/users/sign_up, where I was greeted by this error: undefined method `for' for #<Devise::ParameterSanitizer:0x007fa0dc31c1b0> Did you mean? fork I have searched the wonderful place of Google for any results, only being given outdated, Rails 4 errors and solutions, the same with searching Stack Overflow

问题 Gem & Ruby Versions ruby '2.5.3', 'rails', '~> 5.2.1', 'carrierwave', '~> 1.2', '>= 1.2.3' When I upload images in my local development environment, I receive no errors and no images are uploaded, but my same application in my production environment uploads images as it should. I've double checked my settings and cannot see anything out of place and the fact that it works in production has me confused. image_uploader.rb class ImageUploader < CarrierWave::Uploader::Base include CarrierWave:

问题 Gem & Ruby Versions ruby '2.5.3', 'rails', '~> 5.2.1', 'carrierwave', '~> 1.2', '>= 1.2.3' When I upload images in my local development environment, I receive no errors and no images are uploaded, but my same application in my production environment uploads images as it should. I've double checked my settings and cannot see anything out of place and the fact that it works in production has me confused. image_uploader.rb class ImageUploader < CarrierWave::Uploader::Base include CarrierWave:

问题 I have a fresh rails project where I only generated a controller. I've followed the directions to install bootstrap according to the bootstrap gem, and I keep getting the following error: ActionView::Template::Error (identifier '(function(opts, pluginOpts) {return eva l(process' undefined): 5: <%= csrf_meta_tags %> 6: <%= csp_meta_tag %> 7: 8: <%= stylesheet_link_tag 'application', media: 'all', 'data-turbol inks-track': 'reload' %> 9: <%= javascript_include_tag 'application', 'data

问题 I have some attributes that need to have default values. I've set up my migrations to set the defaults in the database as follows: class AddDefaultsToModel < ActiveRecord::Migration[5.2] def change change_column :posts, :post_type, :string, default: 'draft' change_column :posts, :date_time, :datetime, default: -> { 'CURRENT_TIMESTAMP' } end end The defaults work great when adding directly to the database. However, if I build a new model in Rails, one attribute works as expected, the other

问题 I'm linking to the destroy action for the Sessions controller like this: <%= link_to "Sign out", session_path, method: :delete %> Routes.rb: resources :sessions, only: [:new, :create, :destroy] Rails complains about the link above: No route matches {:action=>"destroy", :controller=>"sessions"} missing required keys: [:id] How do I link to the destroy action and keeping the REST/resource methodology in Rails when there's no object ID to provide for the link? 回答1: It is best to treat the routes

问题 I've been trying to get my head around action cable for what seems like months. Please help. I have a "Connection" - I can't set the identified_by :current_user because this endpoint also needs to be consumed by an external API that uses WebSockets. Can't use browser cookies to authenticate the API endpoint. Files & Support Connection: /app/channels/application_cable/connection.rb module ApplicationCable class Connection < ActionCable::Connection::Base end end Channel: /app/channels