I am having an issue within stupid-simple piece of ruby/mongo code below:
def initMongo
#client.new(['127.0.0.1:27017'])
end
def creatDB(name)
#database = #database.new(#client, name)
end
def creatCollection(name)
#collection = #collection.new(#database, name)
#collection.insert_one({name: 'test'})
#collection.inspect
end
With #collection.insert_one({name: 'test'}) I get :
/collection.rb:129:in write_concern': undefined method write_concern' for Mongo::Client:Class
Ruby v2.2.3 Mongo v2.2
The problem was here :
def initMongo
#client.new(['127.0.0.1:27017'])
end
Replace by :
def initMongo
#client = #client.new(['127.0.0.1:27017'])
end
Related
Please see below.
The delete method is not working and I do not know why.
I am trying to delete a customer without using rails and just plain ruby.
please can you help.
wrong number of arguments (given 0, expected 1) (ArgumentError)
from /Users/mustafaalomer/code/MustafaAlomer711/fullstack-challenges/02-OOP/05-Food-Delivery-Day-One/01-Food-Delivery/app/repositories/customer_repository.rb:28:in `delete'
from /Users/mustafaalomer/code/MustafaAlomer711/fullstack-challenges/02-OOP/05-Food-Delivery-Day-One/01-Food-Delivery/app/controllers/customers_controller.rb:33:in `destroy'
from /Users/mustafaalomer/code/MustafaAlomer711/fullstack-challenges/02-OOP/05-Food-Delivery-Day-One/01-Food-Delivery/router.rb:36:in `route_action'
from /Users/mustafaalomer/code/MustafaAlomer711/fullstack-challenges/02-OOP/05-Food-Delivery-Day-One/01-Food-Delivery/router.rb:13:in `run'
from app.rb:19:in `<main>'
require_relative "../views/customers_view"
require_relative "../models/customer"
class CustomersController
def initialize(customer_repository)
#customer_repository = customer_repository
#customers_view = CustomersView.new
end
def add
# ask user for a name
name = #customers_view.ask_user_for(:name)
# ask user for a address
address = #customers_view.ask_user_for(:address)
# make a new instance of a customer
customer = Customer.new(name: name, address: address)
# add the customer to the repository
#customer_repository.create(customer)
list
end
def list
customers = #customer_repository.all
#customers_view.display_list(customers)
end
def destroy
# ask user for the id to delete
list
id = #customers_view.ask_user_to_delete(:id)
# customer = #customer_repository.find(id)
# #customer_repository.delete(customer)
end
end
require 'csv'
require_relative '../models/customer'
class CustomerRepository
def initialize(csv_file)
#csv_file = csv_file
#customers = []
#next_id = 1
load_csv if File.exist?(csv_file)
end
def all
#customers
end
def create(customer)
customer.id = #next_id
#customers << customer
#next_id += 1
save_csv
end
def find(id)
#customers.find { |customer| customer.id == id}
end
def delete(id)
#customers.delete { |customer| customer.id == id}
end
private
def save_csv
CSV.open(#csv_file, "wb") do |csv|
csv << %w[id name address]
#customers.each do |customer|
csv << [customer.id, customer.name, customer.address]
end
end
end
def load_csv
CSV.foreach(#csv_file, headers: :first_row, header_converters: :symbol) do |row|
row[:id] = row[:id].to_i
#customers << Customer.new(row)
end
#next_id = #customers.last.id + 1 unless #customers.empty?
end
end
delete always takes an argument.
delete_if can be given a block and seems to be what you're looking for.
I am new to ruby and this site so please bear with me! I have googled endlessly to no fruition.
I am trying to pass in a college object to my class method scrape_college_info that I created in the previous class method scrape_illinois_index_page, so that I may scrape the next level of information for the specific college the user selects using Pry and Nokogiri. Unfortunately, I keep getting an argument error.
I know it isn't the prettiest, but this is my code right now:
class College
attr_accessor :name, :location, :size, :type, :url
BASE_PATH = "https://www.collegesimply.com/colleges/illinois/"
def self.college
self.scrape_colleges
end
def self.scrape_colleges
colleges = self.scrape_illinois_index_page
colleges
end
def self.scrape_illinois_index_page
doc = Nokogiri::HTML(open(BASE_PATH))
# binding.pry
colleges = []
doc.xpath("//tr").each do |doc|
college = self.new
if doc.css("td")[0] != nil
college.name = doc.css("td")[0].text.strip
end
if doc.css("td")[1] != nil
college.location = doc.css("td")[1].text.strip
end
if doc.css('table.table tbody tr td:nth-child(1) a')[0] != nil
college.link = doc.css('table.table tbody tr td:nth-child(1) a')[0]['href']
end
colleges << college
end
colleges
end
def self.scrape_college_info(college)
doc = Nokogiri::HTML(open(BASE_PATH + "#{college.link}"))
end
end
Try below code to get college.link.
if doc.css("td")[0] != nil
college.name = doc.css("td")[0].text.strip
college.link = doc.css("td")[0].css("a").map{|a| a['href']}[0]
end
Now you can pass college link like :
def self.scrape_college_info(college)
doc = Nokogiri::HTML(open("https://www.collegesimply.com" + "#{college.link}"))
end
Hope this will solve your problem. Please let me know, if it works for you.
Try using URI.join:
new_url = URI.join(BASE_PATH, college.link).to_s
I am trying to create a database using mongoid but it fails to find the create method. I am trying to create 2 databases based on csv files:
extract_data class:
class ExtractData
include Mongoid::Document
include Mongoid::Timestamps
def self.create_all_databases
#cbsa2msa = DbForCsv.import!('./share/private/csv/cbsa_to_msa.csv')
#zip2cbsa = DbForCsv.import!('./share/private/csv/zip_to_cbsa.csv')
end
def self.show_all_database
ap #cbsa2msa.all.to_a
ap #zip2cbsa.all.to_a
end
end
the class DbForCSV works as below:
class DbForCsv
include Mongoid::Document
include Mongoid::Timestamps
include Mongoid::Attributes::Dynamic
def self.import!(file_path)
columns = []
instances = []
CSV.foreach(file_path, encoding: 'iso-8859-1:UTF-8') do |row|
if columns.empty?
# We dont want attributes with whitespaces
columns = row.collect { |c| c.downcase.gsub(' ', '_') }
next
end
instances << create!(build_attributes(row, columns))
end
instances
end
private
def self.build_attributes(row, columns)
attrs = {}
columns.each_with_index do |column, index|
attrs[column] = row[index]
end
ap attrs
attrs
end
end
I am not aware of all fields and it may change in time. that's why I have create database and generic mehtods.
I have also another issue after having fixed the 'create!' issue.
I am using the encoding to make sure only UTF8 char are handled but I still see:
{
"zip" => "71964",
"cbsa" => "31680",
"res_ratio" => "0.086511098",
"bus_ratio" => "0.012048193",
"oth_ratio" => "0.000000000",
"tot_ratio" => "0.082435345"
}
when doing 'ap attrs' in the code. how to make sure that 'zip' -> 'zip'
Thanks
create! is a class method but you're trying to call it as an instance method. Your import! method shouldn't be an instance method either, it should be a class method since it produces instances of your class:
def self.import!(file_path)
#-^^^^
# everything else would be the same...
end
You'd also make build_attributes a class method since it is just a helper method for another class method:
def self.build_attributes
#...
end
And then you don't need that odd looking new call when using import!:
def self.create_all_databases
#cbsa2msa = DbForCsv.import!('./share/private/csv/cbsa_to_msa.csv')
#zip2cbsa = DbForCsv.import!('./share/private/csv/zip_to_cbsa.csv')
end
I'm learning how to work with HTTParty and API and I'm having an issue with my code.
Users/admin/.rbenv/versions/2.0.0-p481/lib/ruby/2.0.0/uri/generic.rb:214:in `initialize': the scheme http does not accept registry part: :80 (or bad hostname?)
I've tried using debug_output STDOUT both as an argument to my method and after including HTTParty to have a clue but with no success. Nothing gets displayed:
require 'httparty'
class LolObserver
include HTTParty
default_timeout(1) #timeout after 1 second
attr_reader :api_key, :playerid
attr_accessor :region
def initialize(region,playerid,apikey)
#region = region_server(region)
#playerid = playerid
#api_key = apikey
end
def region_server(region)
case region
when "euw"
self.class.base_uri "https://euw.api.pvp.net"
self.region = "EUW1"
when "na"
self.class.base_uri "https://na.api.pvp.net"
self.region = "NA1"
end
end
def handle_timeouts
begin
yield
#Timeout::Error, is raised if a chunk of the response cannot be read within the read_timeout.
#Timeout::Error, is raised if a connection cannot be created within the open_timeout.
rescue Net::OpenTimeout, Net::ReadTimeout
#todo
end
end
def base_path
"/observer-mode/rest/consumer/getSpectatorGameInfo"
end
def current_game_info
handle_timeouts do
url = "#{ base_path }/#{region}/#{playerid}?api_key=#{api_key}"
puts '------------------------------'
puts url
HTTParty.get(url,:debug_output => $stdout)
end
end
end
I verified my URL which is fine so I'm lost as to where the problem is coming from.
I tested with a static base_uri and it doesn't change anything.
The odd thing is when I do:
HTTParty.get("https://euw.api.pvp.net/observer-mode/rest/consumer/getSpectatorGameInfo/EUW1/randomid?api_key=myapikey")
Everything is working fine and I'm getting a response.
HTTParty doesn't seem to like the way you set your base_uri.
Unless you need it to be like that just add another attr_reader called domain and it will work.
require 'httparty'
class LolObserver
include HTTParty
default_timeout(1) #timeout after 1 second
attr_reader :api_key, :playerid, :domain
attr_accessor :region
def initialize(region,playerid,apikey)
#region = region_server(region)
#playerid = playerid
#api_key = apikey
end
def region_server(region)
case region
when "euw"
#domain = "https://euw.api.pvp.net"
self.region = "EUW1"
when "na"
#domain = "https://na.api.pvp.net"
self.region = "NA1"
end
end
def handle_timeouts
begin
yield
#Timeout::Error, is raised if a chunk of the response cannot be read within the read_timeout.
#Timeout::Error, is raised if a connection cannot be created within the open_timeout.
rescue Net::OpenTimeout, Net::ReadTimeout
#todo
end
end
def base_path
"/observer-mode/rest/consumer/getSpectatorGameInfo"
end
def current_game_info
handle_timeouts do
url = "#{domain}/#{ base_path }/#{region}/#{playerid}?api_key=#{api_key}"
puts '------------------------------'
puts url
HTTParty.get(url,:debug_output => $stdout)
end
end
end
I'm picking up ruby language and get stuck at playing with the chatterbot i have developed. Similar issue has been asked here Click here , I did what they suggested to change the rescue in order to see the full message.But it doesn't seem right, I was running basic_client.rb at rubybot directory and fred.bot is also generated at that directory . Please see the error message below: Your help very be very much appreciated.
Snailwalkers-MacBook-Pro:~ snailwalker$ cd rubybot
Snailwalkers-MacBook-Pro:rubybot snailwalker$ ruby basic_client.rb
/Users/snailwalker/rubybot/bot.rb:12:in `rescue in initialize': Can't load bot data because: No such file or directory - bot_data (RuntimeError)
from /Users/snailwalker/rubybot/bot.rb:9:in `initialize'
from basic_client.rb:3:in `new'
from basic_client.rb:3:in `<main>'
basic_client.rb
require_relative 'bot.rb'
bot = Bot.new(:name => 'Fred', :data_file => 'fred.bot')
puts bot.greeting
while input = gets and input.chomp != 'end'
puts '>> ' + bot.response_to(input)
end
puts bot.farewell
bot.rb:
require 'yaml'
require './wordplay'
class Bot
attr_reader :name
def initialize(options)
#name = options[:name] || "Unnamed Bot"
begin
#data = YAML.load(File.read('bot_data'))
rescue => e
raise "Can't load bot data because: #{e}"
end
end
def greeting
random_response :greeting
end
def farewell
random_response :farewell
end
def response_to(input)
prepared_input = preprocess(input).downcase
sentence = best_sentence(prepared_input)
reversed_sentence = WordPlay.switch_pronouns(sentence)
responses = possible_responses(sentence)
responses[rand(responses.length)]
end
private
def possible_responses(sentence)
responses = []
#data[:responses].keys.each do |pattern|
next unless pattern.is_a?(String)
if sentence.match('\b' + pattern.gsub(/\*/, '') + '\b')
if pattern.include?('*')
responses << #data[:responses][pattern].collect do |phrase|
matching_section = sentence.sub(/^.*#{pattern}\s+/, '')
phrase.sub('*', WordPlay.switch_pronouns(matching_section))
end
else
responses << #data[:responses][pattern]
end
end
end
responses << #data[:responses][:default] if responses.empty?
responses.flatten
end
def preprocess(input)
perform_substitutions input
end
def perform_substitutions(input)
#data[:presubs].each {|s| input.gsub!(s[0], s[1])}
input
end
# select best_sentence by looking at longest sentence
def best_sentence(input)
hot_words = #data[:responses].keys.select do |k|
k.class == String && k =~ /^\w+$/
end
WordPlay.best_sentence(input.sentences, hot_words)
end
def random_response(key)
random_index = rand(#data[:responses][key].length)
#data[:responses][key][random_index].gsub(/\[name\]/, #name)
end
end
I'm assuming that you are trying to load the :data_file passed into Bot.new, but right now you are statically loading a bot_data file everytime. You never mentioned about bot_data in the question. So if I'm right it should be like this :
#data = YAML.load(File.read(options[:data_file]))
Instead of :
#data = YAML.load(File.read('bot_data'))