How can i get parsed_response from here?
require 'HTTParty'
require 'httparty/request'
require 'httparty/response/headers'
class CRUD
include HTTParty
def retrieve
##response = CRUD.get('http://dummy.restapiexample.com/api/v1/employee/id')
end
end
{"id":"719","employee_name":"test","employee_salary":"123","employee_age":"23","profile_image":""}
puts #manter_user.retrieve.parsed_response['employee_name'] -- dont work
puts CRUD.class_variable_get(:##response).parsed_response['employee_name'] -- dont work
It's an instance method, it means that you need to create an instance. And you don't need global variable. And it is bad idea to name class with all uppercase letters - this style is used for constants. Classes and modules use MixedCase and have no underscores, each word starts with an uppercase letter.
class Crud
include HTTParty
def retrieve
self.class.get('http://dummy.restapiexample.com/api/v1/employee/id')
end
end
> Crud.new.retrieve.parsed_response
Since you are getting the JSON response, you can parsed it back as
require 'json'
foo = JSON['{"id":"719","employee_name":"test","employee_salary":"123","employee_age":"23","profile_image":""}']
puts foo['employee_name'] # => test
Related
Okay so I am completely new to using IRB so I have no idea what I am doing wrong.
Here is my gem that I built
# frozen_string_literal: true
require_relative "badwordgem/version"
require 'yaml' #this will need to use the badlist.yml file
module Badwordgem
class Error < StandardError; end
class Base
class << self # assign class to itself so self does not need to be used for every method
def badlist
#badlist ||= YAML.load_file(File.expand_path("badlist.yml", __dir__)) # This will load in the bad words from our YML file and it will assign it to the badlist variable
end
def sanitize(input = "sassy") # method to take in user input to check for profanity
word = input.downcase # It will change the user input and set it to lowercase to match our bad list of words
badlist.each do |key, value| # For every word in the badlist assign it a key(a bad word), and a value(then replace the bad work with * symbol)
word.gsub!(/\b#{key}\b/, value) # For each word the user has inputed replace the old word(key) with the new word(value)
end
word # return the word whether it contains profanity or not
end
end
end
end
Essentially it tests to see if a word is bad or not based on my list of badwords.
I have installed and built it but I have no idea how to test it in IRB.
I've tried running badwordgem.sanitize(hello) etc. but that clearly is wrong as it gives me this error undefined local variable or method badwordgem' for main:Object'
What command in IRB do I type to test it??
I have a Sinatra API file that has following code-
require 'json'
require_relative 'api_logger'
include ApiLogger
get /myapi/:id
request_params = request.env
write_log('log message')
end
Then I have a module containing the methods 'write_log'-
module ApiLogger
def write_log(message)
file.write(request['user']+message)
end
But request['user'] is coming out blank.
So the question is how to access the request variable from Sinatra API file in ApiLogger module? Also, I'm creating service class objects from API class and pass them request object at initialization. Can the module 'ApiLogger' access that 'request' instance variable from service class if the service classes just include 'ApiLogger'?
You could pass it as an additional argument.
Something like:
require 'json'
require_relative '../../lib/helpers/api_logger'
include ApiLogger
get /myapi/:id
request_params = request.env
write_json_log('log message', request)
end
and
def write_json_log(message, request)
file.write(request['auth_subject']+message)
end
I did not want to pass request object to each method. So I made 'request_params' a global variable in all classes that need to log and added this line in 'ApiLogger' to fetch the value of request object-
request = instance_variable_get '#request_params'
You were almost there, all you needed was include your module in the helpers in order to have a direct access to the request object. Here's a slightly modified version of your code that runs as a standalone program:
require 'sinatra'
module ApiLogger
def write_log(message)
$stdout.write(request.env['sinatra.route'] + message)
end
end
helpers do
include ApiLogger
end
get '/test' do
write_log('log message')
'ok'
end
The need here is to read a json file and to make the variables which is done from one class and use them with in another class. What I have so far is
helper.rb
class MAGEINSTALLER_Helper
#note nonrelated items removed
require 'fileutils'
#REFACTOR THIS LATER
def load_settings()
require 'json'
file = File.open("scripts/installer_settings.json", "rb")
contents = file.read
file.close
#note this should be changed for a better content check.. ie:valid json
#so it's a hack for now
if contents.length > 5
begin
parsed = JSON.parse(contents)
rescue SystemCallError
puts "must redo the settings file"
else
puts parsed['bs_mode']
parsed.each do |key, value|
puts "#{key}=>#{value}"
instance_variable_set("#" + key, value) #better way?
end
end
else
puts "must redo the settings file"
end
end
#a method to provide feedback simply
def download(from,to)
puts "completed download for #{from}\n"
end
end
Which is called in a file of Pre_start.rb
class Pre_start
#note nonrelated items removed
def initialize(params=nil)
puts 'World'
mi_h = MAGEINSTALLER_Helper.new
mi_h.load_settings()
bs_MAGEversion=instance_variable_get("#bs_MAGEversion") #doesn't seem to work
file="www/depo/newfile-#{bs_MAGEversion}.tar.gz"
if !File.exist?(file)
mi_h.download("http://www.dom.com/#{bs_MAGEversion}/file-#{bs_MAGEversion}.tar.gz",file)
else
puts "mage package exists"
end
end
end
the josn file is valid json and is a simple object (note there is more just showing the relevant)
{
"bs_mode":"lite",
"bs_MAGEversion":"1.8.0.0"
}
The reason I need to have a json settings file is that I will need to pull settings from a bash script and later a php script. This file is the common thread that is used to pass settings each share and need to match.
Right now I end up with an empty string for the value.
The instance_variable_setis creating the variable inside MAGEINSTALLER_Helper class. That's the reason why you can't access these variables.
You can refactor it into a module, like this:
require 'fileutils'
require 'json'
module MAGEINSTALLER_Helper
#note nonrelated items removed
#REFACTOR THIS LATER
def load_settings()
content = begin
JSON.load_file('scripts/installer_settings.json')
rescue
puts 'must redo the settings file'
{} # return an empty Hash object
end
parsed.each {|key, value| instance_variable_set("##{key}", value)}
end
#a method to provide feedback simply
def download(from,to)
puts "completed download for #{from}\n"
end
end
class PreStart
include MAGEINSTALLER_Helper
#note nonrelated items removed
def initialize(params=nil)
puts 'World'
load_settings # The method is available inside the class
file="www/depo/newfile-#{#bs_MAGEversion}.tar.gz"
if !File.exist?(file)
download("http://www.dom.com/#{#bs_MAGEversion}/file-#{#bs_MAGEversion}.tar.gz",file)
else
puts "mage package exists"
end
end
end
I refactored a little bit to more Rubish style.
On this line:
bs_MAGEversion=instance_variable_get("#bs_MAGEversion") #doesn't seem to work
instance_variable_get isn't retrieving from the mi_h Object, which is where your value is stored. The way you've used it, that line is equivalent to:
bs_MAGEversion=#bs_MAGEversion
Changing it to mi_h.instance_variable_get would work. It would also be painfully ugly ruby. But I sense that's not quite what you're after. If I read you correctly, you want this line:
mi_h.load_settings()
to populate #bs_MAGEversion and #bs_mode in your Pre_start object. Ruby doesn't quite work that way. The closest thing to what you're looking for here would probably be a mixin, as described here:
http://www.ruby-doc.org/docs/ProgrammingRuby/html/tut_modules.html
We do something similar to this all the time in code at work. The problem, and solution, is proper use of variables and scoping in the main level of your code. We use YAML, you're using JSON, but the idea is the same.
Typically we define a constant, like CONFIG, which we load the YAML into, in our main code, and which is then available in all the code we require. For you, using JSON instead:
require 'json'
require_relative 'helper'
CONFIG = JSON.load_file('path/to/json')
At this point CONFIG would be available to the top-level code and in "helper.rb" code.
As an alternate way of doing it, just load your JSON in either file. The load-time is negligible and it'll still be the same data.
Since the JSON data should be static for the run-time of the program, it's OK to use it in a CONSTANT. Storing it in an instance variable only makes sense if the data would vary from instance to instance of the code, which makes no sense when you're loading data from a JSON or YAML-type file.
Also, notice that I'm using a method from the JSON class. Don't go through the rigamarole you're using to try to copy the JSON into the instance variable.
Stripping your code down as an example:
require 'fileutils'
require 'json'
CONTENTS = JSON.load_file('scripts/installer_settings.json')
class MAGEINSTALLER_Helper
def download(from,to)
puts "completed download for #{from}\n"
end
end
class Pre_start
def initialize(params=nil)
file = "www/depo/newfile-#{ CONFIG['bs_MAGEversion'] }.tar.gz"
if !File.exist?(file)
mi_h.download("http://www.dom.com/#{ CONFIG['bs_MAGEversion'] }/file-#{ CONFIG['bs_MAGEversion'] }.tar.gz", file)
else
puts "mage package exists"
end
end
end
CONFIG can be initialized/loaded in either file, just do it from the top-level before you need to access the contents.
Remember, Ruby starts executing it at the top of the first file and reads downward. Code that is outside of def, class and module blocks gets executed as it's encountered, so the CONFIG initialization will happen as soon as Ruby sees that code. If that happens before you start calling your methods and creating instances of classes then your code will be happy.
I am using DataMapper for Database access. My goal is to send the models to an webservice as read-only object. This is my current try:
class User
include DataMapper::Resource
def to_yaml(opts = {})
mini_me = OpenStruct.new
instance_variables.each do |var|
next if /^#_/ =~ var.to_s
mini_me.send("#{var.to_s.gsub(/^#/, '')}=", instance_variable_get(var))
end
mini_me.to_yaml(opts)
end
....
end
YAML::ENGINE.yamler = 'psych'
u = User.get("hulk")
p u.to_yaml
# => "--- !ruby/object:OpenStruct\ntable:\n :uid: hulk\n :uidNumber: 1000\n :gidNumber: 1001\n :email: hulk#example.com\n :dn: uid=hulk,ou=People,o=example\n :name: Hulk\n :displayName: Hulk\n :description: Hulk\n :homeDirectory: /home/hulk\n :accountFlags: ! '[U ]'\n :sambaSID: S-1-5-21-......\nmodifiable: true\n"
p [ u ].to_yaml # TypeError: can't dump anonymous class Class
Any ideas how to make this work and get rid of the exception?
Thanks,
krissi
Using to_yaml is deprecated in Psych, and from my testing it seems to be actually broken in cases like this.
When you call to_yaml directly on your object, your method gets called and you get the result you expect. When you call it on the array containing your object, Psych serializes it but doesn’t correctly handle your to_yaml method, and ends up falling back onto the default serialization. In your case this results in an attempt to serialize an anonymous Class which causes the error.
To fix this, you should use the encode_with method instead. If it’s important that the serialized form is tagged as an OpenStruct object in the generated yaml you can use the represent_object (that first nil parameter doesn’t seem to be used):
def encode_with(coder)
mini_me = OpenStruct.new
instance_variables.each do |var|
next if /^#_/ =~ var.to_s
mini_me.send("#{var.to_s.gsub(/^#/, '')}=", instance_variable_get(var))
end
coder.represent_object(nil, mini_me)
end
If you were just using OpenStruct for convenience, an alternative could be something like:
def encode_with(coder)
instance_variables.each do |var|
next if /^#_/ =~ var.to_s
coder[var.to_s.gsub(/^#/, '')]= instance_variable_get(var)
end
end
Note that Datamapper has its own serializer plugin that provides yaml serialization for models, it might be worth looking into.
Some popular blog sites typically use square brackets in their URLs but ruby's built-in URI.parse() method chokes on them, raising a nasty exception, as per:
http://redmine.ruby-lang.org/issues/show/1466
I'm trying to write a simple monkey-patch that gracefully handles URLs with the square bracket. The following is what I have so far:
require 'uri'
module URI
def self.parse_with_safety(uri)
safe_uri = uri.replace('[', '%5B')
safe_uri = safe_uri.replace(']', '%5D')
URI.parse_without_safety(safe_uri)
end
alias_method_chain :parse, :safety
end
But when run, this generates an error:
/Library/Ruby/Gems/1.8/gems/activesupport-2.3.8/lib/active_support/core_ext/module/aliasing.rb:33:in alias_method: NameError: undefined method 'parse' for module 'URI'
How can I successfully monkey-patch URI.parse?
alias_method_chain is executed on the module level so it only affects instance methods.
What you have to do is execute it on the module's class level:
require 'uri'
module URI
class << self
def parse_with_safety(uri)
parse_without_safety uri.gsub('[', '%5B').gsub(']', '%5D')
end
alias parse_without_safety parse
alias parse parse_with_safety
end
end
#nil his comment is very helpful, we ended up with the following:
def parse_with_safety(uri)
begin
parse_without_safety uri.gsub(/([{}|\^\[\]\#`])/) {|s| URI.escape(s)}
rescue
parse_without_safety '/'
end
end