I'm packaging my library into gem. This is the structure of the project.
|~lib/
| |~renren_api/
| | |-authentication.rb
| | |-http_adapter.rb
| | \-signature_calculator.rb
| \-renren_api.rb
|+spec/
|-README
\-renren-api.gemspec
I write the "lib/renren-api.rb" as follow. Rack inspire me.
module RenrenAPI
VERSION = [0, 3, 1]
def self.version
VERSION * "."
end
autoload :Authentication, "renren_api/authentication"
autoload :SignatureCalculator, "renren_api/signature_calculator"
autoload :HTTPAdapter, "renren_api/http_adapter"
end
Why the autoload method cannot find the required file, but Rack's can?
ruby-1.9.2-head :001 > require "renren_api"
=> true
ruby-1.9.2-head :002 > RenrenAPI::Authentication
LoadError: no such file to load -- renren_api/authentication
from (irb):2
from /Users/siegfried/.rvm/rubies/ruby-1.9.2-head/bin/irb:16:in `<main>'
ruby-1.9.2-head :003 > RenrenAPI::HTTPAdapter
LoadError: no such file to load -- renren_api/http_adapter
from (irb):3
from /Users/siegfried/.rvm/rubies/ruby-1.9.2-head/bin/irb:16:in `<main>'
# The following split into newlines to make more readable
ruby-1.9.2-head :004 > $:
=> ["/Users/siegfried/.rvm/gems/ruby-1.9.2-head/gems/renren-api-0.3.1/lib",
"/Users/siegfried/.rvm/rubies/ruby-1.9.2-head/lib/ruby/site_ruby/1.9.1",
"/Users/siegfried/.rvm/rubies/ruby-1.9.2-head/lib/ruby/site_ruby/1.9.1/x86_64-darwin10.6.0",
"/Users/siegfried/.rvm/rubies/ruby-1.9.2-head/lib/ruby/site_ruby",
"/Users/siegfried/.rvm/rubies/ruby-1.9.2-head/lib/ruby/vendor_ruby/1.9.1",
"/Users/siegfried/.rvm/rubies/ruby-1.9.2-head/lib/ruby/vendor_ruby/1.9.1/x86_64-darwin10.6.0",
"/Users/siegfried/.rvm/rubies/ruby-1.9.2-head/lib/ruby/vendor_ruby",
"/Users/siegfried/.rvm/rubies/ruby-1.9.2-head/lib/ruby/1.9.1",
"/Users/siegfried/.rvm/rubies/ruby-1.9.2-head/lib/ruby/1.9.1/x86_64-darwin10.6.0"]
My gemspec file is as follow.
Gem::Specification.new do |spec|
spec.name = "renren-api"
spec.version = "0.3.1"
spec.summary = "a library to request Renren's API"
spec.description = <<-EOF
renren-api provides capability to request the service of Renren Social Network.
EOF
spec.files = Dir["{lib/*,spec/*}"] + %w{README}
spec.require_path = "lib"
spec.extra_rdoc_files = %w{README}
spec.test_files = Dir["spec/*_spec.rb"]
spec.author = "Lei, Zhi-Qiang"
spec.email = "#my email"
spec.homepage = "https://github.com/siegfried/renren-api"
end
When require "renren_api/authentication".
ruby-1.9.2-head :001 > require "renren_api/authentication"
LoadError: no such file to load -- renren_api/authentication
from <internal:lib/rubygems/custom_require>:29:in `require'
from <internal:lib/rubygems/custom_require>:29:in `require'
from (irb):1
from /Users/siegfried/.rvm/rubies/ruby-1.9.2-head/bin/irb:16:in `<main>'
Add ".rb" will not help.
ruby-1.9.2-head :001 > require "renren_api"
=> true
ruby-1.9.2-head :002 > RenrenAPI::Authentication
LoadError: no such file to load -- renren_api/authentication.rb
from (irb):2
from /Users/siegfried/.rvm/rubies/ruby-1.9.2-head/bin/irb:16:in `<main>'
I find the problem is I made a wrong gemspec.
spec.files = Dir["{lib/*,spec/*}"] + %w{README}
It didn't package the file under "lib/renren_api/".
To change it like this will solve this problem.
spec.files = Dir["{lib/**/*,spec/*}"] + %w{README}
Related
So I am simply trying to run this code below with sunlight congress gem, but I seem to be doing something wrong. I am trying to include the gem in the project however something is off.
I am trying to implement this using RubyMine 7.1.2(if version matters), Ruby 2.2.2.
sunlight congress can be found here: https://github.com/sunlightlabs/ruby-sunlight.
Also, I am working on windows 8.1.
require 'csv'
require 'sunlight-congress'
require 'erb'
Sunlight::Congress.api_key = "e179a6973728c4dd3fb1204283aaccb5"
def neat_zip(zipcode)
zipcode.to_s.rjust(5,"0")[0..4]
end
def legislator_by_zip(zipcode)
Sunlight::Congress::Legislator.by_zipcode(zipcode)
end
def save_thank_you_letters(id,form_letter)
Dir.mkdir("output") unless Dir.exists?("output")
filename = "output/thanks_#{id}.html"
File.open(filename,'w') do |file|
file.puts form_letter
end
end
puts "EventManager initialized."
contents = CSV.open 'event_attendees.csv', headers: true, header_converters: :symbol
template_letter = File.read "form_letter.erb"
erb_template = ERB.new template_letter
contents.each do |row|
id = row[0]
name = row[:first_name]
zipcode = neat_zip(row[:zipcode])
legislators = legislator_by_zip(zipcode)
form_letter = erb_template.result(binding)
save_thank_you_letters(id,form_letter)
end
I am getting this error:
C:\Ruby22\bin\ruby.exe -e $stdout.sync=true;$stderr.sync=true;load($0=ARGV.shift) C:/Ruby22/event_manager/sunlight-congress-master/lib/event_manager.rb
C:/Ruby22/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require': cannot load such file -- sunlight-congress (LoadError)
from C:/Ruby22/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'
from C:/Ruby22/event_manager/sunlight-congress-master/lib/event_manager.rb:2:in `<top (required)>'
from -e:1:in `load'
from -e:1:in `<main>'
Do i simply have the path wrong? gem isnt installed?
You need to gem install sunlight-congress.
Update: Resources to install gems in Windows / RubyMine
Installing gems with RubyMine
Installing Ruby Gem in Windows
http://rubyinstaller.org/
Using gem serialport in ruby i'm having the error code EOFError: end of file reached
irb
2.0.0-p451 :001 > require 'serialport'
=> true
2.0.0-p451 :002 > serial_port = SerialPort.new "/dev/ttyUSB0", 115200
=> #<SerialPort:fd 7>
2.0.0-p451 :009 > serial_port.write "#00RD0000020054*\r"
=> 17
2.0.0-p451 :010 > r = serial_port.readline("\r")
EOFError: end of file reached
from (irb):10:in `readline'
from (irb):10
from /home/user/.rvm/rubies/ruby-2.0.0-p451/bin/irb:12:in `<main>'
any suggestion?
Try crate separate SerialPort objects for reading and writing. It seems to be an issue with Ruby - see here: http://www.rngtng.com/2009/11/27/if-your-ruby-serial-port-doesnt-read-what-youre-sending/
Attempt the following
serial_port.readlines
Instead of the
serial_port.readline("\r")
I might also suggest
serial_port.readlines("\r")
I'm not sure it's REXML or ruby issue.
But this is happening when I work with REXML.
The program below should access elements of each xml file in the directory.
#!/usr/bin/ruby -w
require 'rexml/document'
include REXML
p "Current directory was: " + Dir.pwd
Dir.chdir("/home/askar/xml_files1") {
p "Now we're in: " + Dir.pwd
if File.exist?(Dir.pwd)
xml_files = Dir.glob("ShipmentRequest*.xml")
Dir.foreach(Dir.pwd) do |file|
xmlfile = File.new(file)
xmldoc = Document.new(xmlfile)
end
else
puts "It's empty"
end
}
When I run:
ruby import_xml.rb
Errors:
"Current directory was: /home/askar/Dropbox/rails_studio/xml_to_mysql"
"Now we're in: /home/askar/xml_files1"
There're 6226 files in the folder...
/home/askar/.rvm/rubies/ruby-1.9.3-p429/lib/ruby/1.9.1/rexml/source.rb:148:in `read': Is a directory - . (Errno::EISDIR)
from /home/askar/.rvm/rubies/ruby-1.9.3-p429/lib/ruby/1.9.1/rexml/source.rb:148:in `initialize'
from /home/askar/.rvm/rubies/ruby-1.9.3-p429/lib/ruby/1.9.1/rexml/source.rb:14:in `new'
from /home/askar/.rvm/rubies/ruby-1.9.3-p429/lib/ruby/1.9.1/rexml/source.rb:14:in `create_from'
from /home/askar/.rvm/rubies/ruby-1.9.3-p429/lib/ruby/1.9.1/rexml/parsers/baseparser.rb:127:in `stream='
from /home/askar/.rvm/rubies/ruby-1.9.3-p429/lib/ruby/1.9.1/rexml/parsers/baseparser.rb:116:in `initialize'
from /home/askar/.rvm/rubies/ruby-1.9.3-p429/lib/ruby/1.9.1/rexml/parsers/treeparser.rb:9:in `new'
from /home/askar/.rvm/rubies/ruby-1.9.3-p429/lib/ruby/1.9.1/rexml/parsers/treeparser.rb:9:in `initialize'
from /home/askar/.rvm/rubies/ruby-1.9.3-p429/lib/ruby/1.9.1/rexml/document.rb:245:in `new'
from /home/askar/.rvm/rubies/ruby-1.9.3-p429/lib/ruby/1.9.1/rexml/document.rb:245:in `build'
from /home/askar/.rvm/rubies/ruby-1.9.3-p429/lib/ruby/1.9.1/rexml/document.rb:43:in `initialize'
from import_xml.rb:20:in `new'
from import_xml.rb:20:in `block (2 levels) in <main>'
from import_xml.rb:17:in `foreach'
from import_xml.rb:17:in `block in <main>'
from import_xml.rb:8:in `chdir'
from import_xml.rb:8:in `<main>'
When I comment out:
#xmldoc = Document.new(xmlfile)
it's not giving errors.
Folder /home/askar/xml_files1 contains only 3 xml files.
I'm using Linux Mint Nadia and
ruby -v
ruby 1.9.3p429 (2013-05-15 revision 40747) [x86_64-linux]
If you noticed, for some reason, error shows ruby 1.9.1. Is this an issue?
I think #halfelf is correct here. The API docs say that Dir.foreach will iterate over every entry in the directory - and in Unix, that includes the two directories . and ...
A couple lines before your Dir.foreach call, you use glob to build an array of files called xml_files. What happens if you iterate over that in your loop instead?
Just a guess: Not everything returned by Dir.foreach(Dir.pwd) is a file that can be read. Some of them are directories.
Using Nokogiri, here's how I'd write this:
#!/usr/bin/ruby -w
require 'nokogiri'
DIRNAME = "/home/askar/xml_files1"
puts "Current directory is: #{ Dir.pwd }"
Dir.chdir(DIRNAME) do
puts "Now in: #{ DIRNAME }"
xml_files = Dir.glob("ShipmentRequest*.xml")
if xml_files.empty?
puts "#{ DIRNAME } is empty."
else
xml_files.each do |file|
doc = Nokogiri::XML(open(file))
# ... do something with the doc ...
end
end
end
When I do require './primes.rb' in irb I get this:
1.9.3-p392 :004 > require './primes.rb'
LoadError: cannot load such file -- ./primes.rb
from /Users/RBonhardt/.rvm/rubies/ruby-1.9.3-p392/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
from /Users/RBonhardt/.rvm/rubies/ruby-1.9.3-p392/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
from (irb):4
from /Users/RBonhardt/.rvm/rubies/ruby-1.9.3-p392/bin/irb:16:in `<main>'
Here is the primes.rb document:
# primes.rb
require 'debugger'
def prime?(num)
debugger
(1..num).each do |i|
if (num % i) == 0
return false
end
end
end
def primes(num_primes)
ps = []
num = 1
while ps.count < num_primes
primes << num if prime?(num)
end
end
if __FILE__ == $PROGRAM_NAME
puts primes(100)
end
Any suggestions of how to get this to work would be greatly appreciated!
When I do require relative it gives me this:
1.9.3-p392 :010 > require_relative 'primes.rb'
LoadError: cannot infer basepath
from (irb):10:in `require_relative'
from (irb):10
from /Users/RBonhardt/.rvm/rubies/ruby-1.9.3-p392/bin/irb:16:in `<main>'
When I do the second solution below it gives me this:
1.9.3-p392 :013 > $LOAD_PATH << "."
=> ["/Users/RBonhardt/.rvm/rubies/ruby-1.9.3-p392/lib/ruby/site_ruby/1.9.1", "/Users/RBonhardt/.rvm/rubies/ruby-1.9.3-p392/lib/ruby/site_ruby/1.9.1/x86_64-darwin11.4.2", "/Users/RBonhardt/.rvm/rubies/ruby-1.9.3-p392/lib/ruby/site_ruby", "/Users/RBonhardt/.rvm/rubies/ruby-1.9.3-p392/lib/ruby/vendor_ruby/1.9.1", "/Users/RBonhardt/.rvm/rubies/ruby-1.9.3-p392/lib/ruby/vendor_ruby/1.9.1/x86_64-darwin11.4.2", "/Users/RBonhardt/.rvm/rubies/ruby-1.9.3-p392/lib/ruby/vendor_ruby", "/Users/RBonhardt/.rvm/rubies/ruby-1.9.3-p392/lib/ruby/1.9.1", "/Users/RBonhardt/.rvm/rubies/ruby-1.9.3-p392/lib/ruby/1.9.1/x86_64-darwin11.4.2", "."]
1.9.3-p392 :014 > require 'primes.rb'
LoadError: cannot load such file -- primes.rb
from /Users/RBonhardt/.rvm/rubies/ruby-1.9.3-p392/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
from /Users/RBonhardt/.rvm/rubies/ruby-1.9.3-p392/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
from (irb):14
from /Users/RBonhardt/.rvm/rubies/ruby-1.9.3-p392/bin/irb:16:in `<main>'
1.9.3-p392 :015 >
When I try it in pry:
[4] pry(main)> require_relative 'primes.rb'
LoadError: cannot infer basepath
from (pry):2:in `require_relative'
[5] pry(main)> require 'primes.rb'
LoadError: cannot load such file -- primes.rb
from /Users/RBonhardt/.rvm/rubies/ruby-1.9.3-p392/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
[6] pry(main)> .ls
Applications Movies git-completion.bash
Desktop Music rails_projects
Documents Pictures ruby
Downloads Public runwithfriends
Dropbox code shopify
Library dev sites
[7] pry(main)> require 'ruby/app_acad_mini_curriculum/debugging/primes.rb'
LoadError: cannot load such file -- ruby/app_acad_mini_curriculum/debugging/primes.rb
from /Users/RBonhardt/.rvm/rubies/ruby-1.9.3-p392/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
Try require_relative
require_relative 'primes.rb'
EDIT:
Note that this will only work from within a script. If you are trying to require this script into an irb session then you will need to provide the full path to primes.rb. The reason is where irb's location is. For instance, try Dir.pwd inside irb and you will see where require_relative is attempting to search for primes.rb.
There are a couple things you could do:
# Just need to require the one file.
require_relative File.join('users', 'yourusername', 'prime_folder', 'prime.rb')
# Many files in the same folder
$LOAD_PATH << File.join('users', 'yourusername', 'prime_folder')
require 'prime.rb'
require 'another_file.rb'
Another option, one that I use, is Pry. It is like irb and is very easy to call from a script. It is a gem so:
gem install pry
At the end of your script, you could do:
if $0 == __FILE__
require 'pry'
binding.pry
end
You would then drop into an irb like REPL where you can test and debug your methods. I can't survive without it.
unlike ruby 1.8, you can't require a file that is in the same folder, because the current folder is not on the load path any longer.
To emulate the behavior of ruby 1.8, you could try
$LOAD_PATH << "."
require 'primes.rb'
However, the correct way to do in ruby 1.9, as #CharlesCaldwell pointed, is using relative_require.
Here is a good discussion of the best way to deal with this.
note that relative_require does not work in irb. You can check the motive on #CharlesCaldwell answer.
But looking in your task question, you should not use irb, you should use pry:
We're going to use two gems. One is called Pry, which is a replacement for irb. You'll have to gem install pry. It's not essential for debugging that you use Pry, but it will make life nicer.
Here is an example using relative require:
[fotanus#thing ~]$ cat primes.rb
# primes.rb
def prime?(num)
(1..num).each do |i|
if (num % i) == 0
return false
end
end
end
def primes(num_primes)
ps = []
num = 1
while ps.count < num_primes
primes << num if prime?(num)
end
end
if __FILE__ == $PROGRAM_NAME
puts primes(100)
end
[fotanus#thing ~]$ cat a.rb
require_relative 'primes.rb'
[fotanus#thing ~]$ ruby a.rb
When I try this with roo gem:
irb(main):001:0> require 'roo'
=> true
irb(main):002:0> oo = Excel.new("C:/Users/Abash/Desktop/test1.xls")
**NameError: uninitialized constant Excel** from (irb):2
from C:/Ruby193/bin/irb:12:in `<main>'
When I try this with spreadsheet gem:
irb(main):001:0> require 'spreadsheet'
=> true
irb(main):002:0>Spreadsheet.client_encoding = 'UTF-8'
=> "UTF-8"
irb(main):003:0> book = Spreadsheet.open 'C:/Users/Abash/Desktop/test1.xls'
**Errno::EACCES: Permission denied** - C:/Users/Abash/Desktop/test1.xls
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/spreadsheet-0.8.2/lib/spreadsheet.rb:69:in `initialize'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/spreadsheet-0.8.2/lib/spreadsheet.rb:69:in `open'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/spreadsheet-0.8.2/lib/spreadsheet.rb:69:in `open'
from (irb):3
from C:/Ruby193/bin/irb:12:in `<main>'
Can somebody show me a work around for these errors?
I believe you are using ruby 1.9 or above version. In such a case,you need to specify the gem while creating a new instance.
require 'roo'
s =Roo::Excel.new("myspreadsheet.xls")
s =Roo::Excelx.new("myspreadsheet.xlsx")