ruby

问题 I have tried all of the solutions to similar problems and haven't gotten this one figured out. I have a has_many :through relationship between 'Clinician', and 'Patient' with a joined model 'CareGroupAssignment'. None of the methods I have tried so far been able to save the clinician to patient association. I would like to have a patient be able to have multiple clinicians associated with it and clinicians will have multiple patients . clinician.rb (simplified) class Clinician < ActiveRecord:

问题 I'm creating a rails app with both web and worker tier in elastic beanstalk. It's normal to start up web environment with ELB settings inside ebextensions. But I cannot startup worker environment because it doesn't have ELB. Is there any way to separate ebextensions for each environments without creating another branch for this? 回答1: Refer to this link second answer https://forums.aws.amazon.com/message.jspa?messageID=685803 来源： https://stackoverflow.com/questions/42435032/separate

问题 How can I force Ruby to respect an underscore in a Net::HTTP header? uri = URI.parse(url) headers = { 'api_key': 'my_private_key' } request = Net::HTTP::Post.new(uri, headers) http = Net::HTTP.new(uri.host, uri.port) response = http.request(request) In this case, the header that gets posted is actually Api-Key and the API I am trying to integrate with actually requires api_key -- case sensitive with the underscore. 回答1: Net::HTTP forces headers to meet the spec with regard to capitalization

问题 Given the example: def method_of_doom my_string = "I sense impending doom." my_string.ah_ha_i_called_a_nonexistent_method rescue NoMethodError => e: puts "PROBLEM: " + e.to_s rescue Exception: puts "Uhh...there's a problem with that there method." end On the line where it says: rescue NoMethodError => e: What is the '=>' doing? How is it different than this usage: module FighterValues BAMBOO_HEAD = { 'life' => 120, 'hit' => 9 } DEATH = { 'life' => 90, 'hit' => 13 } KOALA = { 'life' => 100,

问题 Given the example: def method_of_doom my_string = "I sense impending doom." my_string.ah_ha_i_called_a_nonexistent_method rescue NoMethodError => e: puts "PROBLEM: " + e.to_s rescue Exception: puts "Uhh...there's a problem with that there method." end On the line where it says: rescue NoMethodError => e: What is the '=>' doing? How is it different than this usage: module FighterValues BAMBOO_HEAD = { 'life' => 120, 'hit' => 9 } DEATH = { 'life' => 90, 'hit' => 13 } KOALA = { 'life' => 100,

问题 I am trying to disable logging of IP addresses while handling the request. But I am not able find a way to do this. I want to disable logging of IP for limited portion of my app where user is not yet authenticated. So my questions is How to disable logging of IP in rails log for specific pages(so the IP will not be saved in any log) I am using Rails 3.2.17 EDIT: Here is sample log (from environment.log) Started GET "/my_path" for 192.168.0.109 at 2014-03-28 11:53:20 +0530 I do not want to

问题 I'm using this very straightforward code (practically the same as the bar chart examples here, however I am noticing that the Axes are inverted. The data that should be on the Val axis is shown on the Cat axis. This is also true for the example linked above, and I can't seem to find a way to put them in the correct order. Below is an image of the problem. The code used to generate it is: sheet.add_chart(Axlsx::Bar3DChart,:title => "Chart", :show_legend => false, :start_at => "A1", :end_at =>

问题 I am working on Test First Ruby with rspec examples testing... which I need to pass this test. it "tokenizes a string" do calculator.tokens("1 2 3 * + 4 5 - /").should == [1, 2, 3, :*, :+, 4, 5, :-, :/] end And here is my code def tokens(str) data = str.split(' ') outcomes = [] data.collect do |x| if x.to_i != 0 outcomes.push(x.to_i) elsif x.to_i == 0 temp = x.gsub('"', '') outcomes.push(":#{temp}") end end outcomes end However, I got these feedback. Have no idea how to get rid of the

问题 Trying to annotate this code, the rose memoization ( @||= ) gives me an error Use of undeclared variable @git_sha . # typed: strict # frozen_string_literal: true module Util extend T::Sig sig { returns(String) } def self.git_sha @git_sha ||= ENV.fetch( 'GIT_REV', `git rev-parse --verify HEAD 2>&1` ).chomp end end As far as I've found, I should declare the variable's type with T.let but haven't figured out specifically how. 回答1: Sorbet now has built-in support for this, as of 0.4.4679. Before

问题 I am currently using RMagick and ImageMagick on a project I am working on, an ASCII image generator: https://github.com/ehayon/Pixie However, I don't like the ImageMagick dependency. I'm having a hard time finding an alternate library. All I need to do is get the RGB value at each pixel of an image. I'd like to support PNG and JPEG at a minimum. Anybody have experience with a similar library without the ImageMagick dependency? 回答1: Still looking for one on JPEG, but there's quite a nice