ruby-on-rails-5

来源： https://stackoverflow.com/questions/39884515/render-a-view-in-rails-5-api

来源： https://stackoverflow.com/questions/63808393/generating-a-full-resourceful-path-giving-only-the-last-resource-to-the-routes-h

来源： https://stackoverflow.com/questions/52762015/rails-5-eager-load-and-then-find-by

来源： https://stackoverflow.com/questions/52762015/rails-5-eager-load-and-then-find-by

问题 I am using rails 5, rails_admin, devise and cancancan. Everything works correctly, but when there is access denied, it shows a 'You are not authorized to access this page' error screen. I want to redirect to root_path, I've been searching and I only found that I have to write in app/controllers/application_controller.rb this code: class ApplicationController < ActionController::Base rescue_from CanCan::AccessDenied do |exception| redirect_to root_path, :alert => exception.message end end And

问题 I am using rails 5, rails_admin, devise and cancancan. Everything works correctly, but when there is access denied, it shows a 'You are not authorized to access this page' error screen. I want to redirect to root_path, I've been searching and I only found that I have to write in app/controllers/application_controller.rb this code: class ApplicationController < ActionController::Base rescue_from CanCan::AccessDenied do |exception| redirect_to root_path, :alert => exception.message end end And

问题 I am using a PostgreSQL database and Rails 5.0.6. I try to build a course allocation WebApp for the school where I am working. For each course the teachers are able to select which forms are allowed to visit the course. Migration file: def up create_table :courses do |t| t.integer :number, null: false t.string :name, null: false t.text :description, null: false t.decimal :level, array: true, default: [] t.integer :max_visitor, null: false t.integer :min_visitor t.integer :pos_visit t

问题 I'm trying to configure ActiveStorage to use S3 bucket as a storage backend however I don't want to pass any of access_key_id , secret_access_key , region . Instead, I'd like to use previously defined IAM role. Such configuration is mentioned here. It reads (I've added bold): If you want to use environment variables, standard SDK configuration files, profiles, IAM instance profiles or task roles, you can omit the access_key_id, secret_access_key, and region keys in the example above. The

问题 So I'm trying to create a load more button (not infinite scroll although some simple js tweaks could make it so). I'm using the will_paginate gem in Rails 5. Its currently all working as expected except when I click load more it loads the next page posts twice e.g: Load more > Post 4, Post 5, Post 6, Post 4, Post 5, Post 6 FYI my 'posts' are @links: links_controller.erb def index @links = Link.order('created_at DESC').paginate(:page => params[:page], :per_page => 3) respond_to do |format|

问题 my current rails project is giving a warning of - DEPRECATION WARNING: Method sort_by is deprecated and will be removed in Rails 5.1, as ActionController::Parameters no longer inherits from hash. I've searched for this warning as well as potential fixes but can't find anything at all regarding it. I'm wondering if anybody here would have any suggestions, fixes or replacements for sort_by ? If this is an easy solution I apologies as I'm still learning rails. Thanks for taking the time to read