...valid_content_type errors.add(:portrait, "is an invalid file type") unless %w(image/jpeg image/png).include? file.sanitized_file.content_type end end class ImageUploader < BaseUploader end This works perfectly fine, but now every...
In the discussion of the difference between include and extend in Ruby, there is a misconception that extend would add methods to the singleton class of a ruby object as...
...module ClassMethods def foo puts "Foo!" super end end end class User singleton_class.include(A) include B end User.instance_eval do def foo puts 'Foo' super end end User.foo # => "Foo Foo...
You can not use the hash_including argument matcher with a nested hash: describe 'user' do let(:user) { {id: 1, name: 'Foo', thread: {id: 1, title: 'Bar'} } it do
...user).to match( hash_including( id: 1, thread: {id: 1} ) ) end end The example will fail and returns a not very helpful error message: expected {:id => 1, :name => "Foo", :thread...
...the filename "([^\"]*)"$/ do |filename| patiently do match = page.all('img').find do |img| img[:src].include?("/#{filename}") end expect(match).to be_present end end Note that the check needs to...
...helper since the DOM might change between page.all('img') and the check img[:src].include?, causing a Selenium::WebDriver::Error::StaleElementReferenceError. If you can express a check in a readable...
Consul 0.6.1+ gives you a way to dynamically access and query powers for a given name, model class or record...
When you eagerly load an association list using the .include option, and at the same time have a .where on an included table, two things happen: Rails tries to load...
...the activity from above now suddenly no longer contains any other users: activity = Activity. .includes(:users) .where(users: { id: [4] }) .find(42) activity.users.ids # here happens the unexpected # => [4]
...as simple as I could. More often than not, real JSON endpoints may also include data from (hopefully preloaded) associated records or data that needs to be transformed at render...
Inspect the record scope that is used to generate the JSON. Does scope.explain include a reference to an index it's using? Does it come with an ORDER that...
...of the given parent's descendants matching the given selector. The list will also include the parent element if it matches the selector itself. up.element.closest() Returns the first element that...
...could have happened earlier. Recommendation for our projects New projects New projects should not include jQuery Use a Polyfill like dom4 to normalize browser support Use up.element, Umbrella.js oder even...
...better matchers Which of the following two lines is better? Why? expect(array).to include(5) expect(array.include?(5)).to eq(true) Custom matchers Write a custom matcher called have...
Rails Database Best Practices ActiveRecord: Specifying conditions on an associated table Preload, Eagerload, Includes and Joins Battling n+1 Queries in Rails Tips Preventing scopes from loading
...AND title="Foo" Preloading associations When you preload associations with #preload or #includes Rails will make one query for each table: Card.where(title: 'Foo').preload(:user).to_a # SELECT * FROM...
...users, relations, extensions,...
...in form of a script (text) file. Delete statements will be included to remove existing databases when sourcing this dump. This is useful for moving the content...
...single database A dump of the given database will be created. This does not include the user. When restoring this dump you must create the user and the database before...
...the plugin being installed and in the end wasn't sure if it was included in the standard image or not. With the above command, it will be installed, if...
...it is not already included. In your docker-compose.yml add: opensearch: image: registry.makandra.de/makandra/my-project/opensearch:1.0 build: ./docker/opensearch command: ["./opensearch-docker-entrypoint.sh", "-Ediscovery.type=single-node"] ports: - "127.0.0.1:9200:9200" environment: - "OPENSEARCH_JAVA_OPTS=-Xms512m -Xmx512m...
...Usage in RSpec feature specs Copy the DownloadHelpers module to spec/support. You can now include the helper in all your feature specs: RSpec.configure do |config| config.include(DownloadHelpers, type: :feature)
...Usage in Cucumber scenarios Copy the DownloadHelpers module to features/support. Then include the helper in your scenarios and define some step definitions: World(DownloadHelpers) When('I download {string}') do |locator...
...e.g. the superclass of the superclass): ActiveRecord::RecordNotFound.ancestors.include?(StandardError) # => true Note that ancestors also includes the receiving class itself as well as any included modules (which is quite practical for...
Let's have a look at the internal transformation process of ffmpeg. It includes (de)muxing packets and de/encoding frames to keep everything in sync. The ASCII illustration is...
...Video Playback" section). The result can be verified with ffmpeg -i output.mp4 and should include lines similar to these: Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'output.mp4':
Expected [...] to contain exactly "XXX" ActiveRecord::Base is monkey patched by super_diff/rspec-rails (includes rspec and rails) super_diff/rails (includes active_record and active_support) super_diff/active_record
...mail (or even password reset e-mail), or something similar. The e-mail also includes some reflected text. For example, a user may be able to give their name, and...
...is used within the e-mail. The spammer will then abuse that text to include his advertisment. Potential counter measures are: Add a captcha. Rate limit the sign-up or...
...testing uncomfortable. Automatic insertion of soft hyphens You can use JavaScript libraries like hypher (includes LGPL patterns!) to automatically insert soft hyphens into the text of a DOM node.
...language like URLs or source code. Unlike soft hyphens a tag will not be included in the clipboard when copying text. Option 4: overflow-wrap CSS property
...models to another model (or split a model into different new models). If this includes a lot of associated records, it may not be wise to try to do it...
...being sent to the user. Vary: Accept in Rails Vary: Accept is unfortunately not included by default in Rails < 6.1. That is a bug and differs from the HTTP-specification...
...in RFC 2616 14.44 which states: An HTTP/1.1 server SHOULD include a Vary header field with any cacheable response that is subject to server-driven negotiation. Doing so allows a...
...e.g. all attributes need to be present when initializing an object. Example: class User include ActiveModel::Attributes attribute :salutation attribute :first_name attribute :last_name attribute :street_and_number
...also works for more complex conditions, e.g. with ranges like where(created_at: 2.days.ago..), including orphan checks via where.missing(...). Important The inverted scope will not return rows where role is...
...for example for: Scopes using joins or similar, as where_values_hash does not include those. Conditions where values are ranges, e.g. where(created_at: 1.week.ago..) has an empty where...
Add zip_tricks to your Gemfile and bundle install. In your controller, include ZipTricks::RailsStreaming. You can then use the zip_tricks_stream method in controller actions to...
...own Last-Modified or ETag header to achieve that. Example controller: class DocumentsController < ApplicationController include ZipTricks::RailsStreaming def download documents = Document.all fresh_when Time.current # Sets `Last-Modified` header (see above...
Our applications not only need to be functional, they need to be fast. But, to quote Donald Knuth, premature optimization...