I am curious as to why my args variable is always coming back as {} in the following task:
desc "Create an Api Key assuming one doesn't exist."
task :create_api_key, [:name] => :environment do | t, args |
if !ApiKey.find_by_application_name(args[:name])
binding.pry
if ApiKey.new(:application_name => args[:name], :api_key => SecureRandom.hex(32)).save!
puts "Your key is: " + ApiKey.find_by_application_name(args[:name]).api_key
else
puts "Could not create the api key, you might be missing an argument: Application Name."
end
else
puts "This application already contains an api key."
end
end
The following is a run of the task (Note the binding.pry):
$ bin/rake create_api_key "xaaron_test"
From: /Users/Adam/Documents/Rails-Projects/BlackBird/lib/tasks/create_api_key.rake # line 4 :
1: desc "Create an Api Key assuming one doesn't exist."
2: task :create_api_key, [:name] => :environment do | t, args |
3: if !ApiKey.find_by_application_name(args[:name])
=> 4: binding.pry
5: if ApiKey.new(:application_name => args[:name], :api_key => SecureRandom.hex(32)).save!
6: puts "Your key is: " + ApiKey.find_by_application_name(args[:name]).api_key
7: else
8: puts "Could not create the api key, you might be missing an argument: Application Name."
9: end
[1] pry(main)> args
=> {}
Even if I do bin/rake create_api_key xaaron_test I get the same issue. What is going on? is there some small mistake some where I forgot about?
Update
I also spit out t to see what was in there:
pry(main)> t
=> <Rake::Task create_api_key => [environment]>
You pass arguments to a task by enclosing them in [] directly after the task name.
e.g.
rake create_api_key[xaaron_test]
If you use zsh, you need to escape the opening [
e.g.
rake create_api_key\[xaaron_test]
Related
when console is launched
while at console prompt
How it should work?
See the output here. Simple, quick methods. T.me (current tenant), T.names (tenants in the DB), ...
Launch, ask for tenant selection, set
$ bin/rails c
Running via Spring preloader in process 11233
Loading development environment (Rails 5.1.5)
(1.9ms) SELECT "public"."tenants"."subdomain" FROM "public"."tenants" WHERE "public"."tenants"."deleted_at" IS NULL ORDER BY "public"."tenants"."created_at" DESC
Available tenants: {0=>"public", 1=>"local"}
Select tenant: 1
You are now Tenant 'local'
Frame number: 0/24
Switch tenant
[1] [my-project][development] pry(main)> T.ask
Available tenants: {0=>"public", 1=>"local"}
Select tenant: 0
You are now Tenant 'public'
=> nil
Switch again
[2] [my-project][development] pry(main)> T.ask
Available tenants: {0=>"public", 1=>"local"}
Select tenant: 1
You are now Tenant 'local'
=> nil
Current tenant
[3] [my-project][development] pry(main)> T.me
=> "local"
Tenant we can quickly switch to
[4] [my-project][development] pry(main)> T.hash
=> {0=>"public", 1=>"local"}
Tenant names
[5] [my-project][development] pry(main)> T.names
=> ["local"]
Is abc a tenant?
[6] [my-project][development] pry(main)> T.exists? 'abc'
=> false
Is local a tenant?
[7] [my-project][development] pry(main)> T.exists? 'local'
=> true
Note: This is not tested thoroughly. Please test before using. This code just gives you some idea, how I have been using these small shortcuts to save time during development. Thank you for reading.
Put it inside <project-root>/.pryrc
# What is it?
# => Helper methods for Apartment::Tenant gem
# How does it work?
# * bin/rails console => auto-loads and asks to switch tenant
# * T.ask => anytime in console, to switch tenant from a list
# * T.me => same as Apartment::Tenant.current
# * T.hash => hash of tenants. Example: { 0 => "public", 1 => "tenant-a" }
# * T.names => array with all existing tenant names from DB
# * T.exists?(arg) => returns true/false if `arg` exists as tenant in DB
# * T.switch!(arg) => same as Apartment::Tenant.switch!
require "rubygems"
# convenience class
class T
class << self
# ['tenant1', 'tenant2', ...]
def names
##names ||= Apartment.tenant_names.sort
end
# { 0 => 'public', 1 => 'tenant1', ...}
def hash
##hash ||= { 0 => 'public' }.merge(
(1..(T.names.length)).to_a
.product(T.names)
.to_h
)
end
def switch! arg
Apartment::Tenant.switch!(arg) if T.hash.value?(arg)
end
# current tenant
def me
Apartment::Tenant.current
end
def exists? arg
T.names.include? arg
end
# ask to switch the tenant
def ask
WelcomeClass.select_tenant
end
end
end
# select tenant when entering console
class WelcomeClass
def self.select_tenant
puts "Available tenants: #{T.hash}"
print "Select tenant: "
tenant = gets.strip # ask which one?
unless tenant.empty?
# by name
if T.exists?(tenant)
T.switch!(tenant)
# by index position
# string has digit + tenant index present
elsif tenant[/\d/].present? && T.hash.key?(tenant.to_i)
T.switch!(T.hash[tenant.to_i])
# not found = no action
else
puts "Tenant not found in list '#{tenant}'"
end
end
# announce current tenant
puts "You are now Tenant '#{T.me}'"
end
end
# run the code at `bin/rails console`
Pry.config.exec_string = WelcomeClass.select_tenant
An update is needed for the accepted answer: the T 'hash' method is creating a hash with the right number of keys but the values for all keys are duplicated with the last tenant name (0 => 'public', 1 => 'test', 2 => 'test' .. x => 'test'). Here's a working 'hash' method:
def hash
##hash ||= Hash[(0..T.names.size - 1).zip T.names]
end
bazfer answer is partially correct, it was forgotten public tenant
def hash
##hash ||= { 0 => 'public' }.merge(Hash[(1..T.names.size).zip T.names])
end
Please add to bazfer answer and to accepted answer
I have this rake task:
desc "get product image urls from ItemMaster"
task :get_product_image_urls => :environment do
require 'item_master'
ItemMaster.get_image
end
It calls this API method that iterates over several thousand database items like so:
class ItemMaster
include HTTParty
format :xml
base_uri 'https://api.myapi.com/v2'
def self.get_image
#items = Item.all
#items.each do |item|
response = get("/item?upc=#{item.upc}&epl=100&ef=png", :headers => {"username" => "myname", "password" => "mypass"})
image_link = response["items"]["item"]["media"]["medium"]["url"]
item_image = ItemImage.where(:upc => item.upc).first_or_create
item_image.update_attributes(:url => "#{image_link}")
end
end
end
The rake task starts up when I call it, until it hits this error about 22 items in:
undefined method `[]' for nil:NilClass
/Users/name/Rails/SG/lib/item_master.rb:12:in `block in get_image'
/Users/name/Rails/SG/lib/item_master.rb:10:in `each'
/Users/name/Rails/SG/lib/item_master.rb:10:in `get_image'
/Users/name/Rails/SG/lib/tasks/get_product_image_urls.rake:4:in `block in <top (required)>'
/Users/name/.rvm/gems/ruby-1.9.3-p429/bin/ruby_noexec_wrapper:14:in `eval'
/Users/name/.rvm/gems/ruby-1.9.3-p429/bin/ruby_noexec_wrapper:14:in `<main>'
Line 12 is this guy: image_link = response["items"]["item"]["media"]["medium"]["url"] so I'm thinking that probably a url is missing in the api and it's causing the rake task to fail. Is there a way to move past an error like this and continue on with the rest of the rake task? Thanks in advance!
The ItemMaster.get_image method will need to be edited to either not create the exception condition in the first place, or to rescue on a proper exception and move on. For more on exception handling: http://www.tutorialspoint.com/ruby/ruby_exceptions.htm
An example would be:
def self.get_image
#items = Item.all
#items.each do |item|
response = get("/item?upc=#{item.upc}&epl=100&ef=png", :headers => {"username" => "myname", "password" => "mypass"})
begin
image_link = response["items"]["item"]["media"]["medium"]["url"]
item_image = ItemImage.where(:upc => item.upc).first_or_create
item_image.update_attributes(:url => "#{image_link}")
rescue NoMethodError => ex
logger.error "Failed to locate image link ..." # Customize this to your liking
end
end
end
end
For extra goodness, consider handling the code for each item within a separate method so you can isolate responsibility for handling item-related code within the Item model itself!
I'm working my first project using Neo4j. I'm parsing wikipedia's page and pagelinks dumps to create a graph where the nodes are pages and the edges are links.
I've defined some rake tasks that download the dumps, parse the data, and save it in a Neo4j database. At the end of the rake task I print the number of pages and links created, and some of the pages with the most links. Here is the output of the raks task for the zawiki.
$ rake wiki[zawiki]
[ omitted ]
...
:: Done parsing zawiki
:: 1984 pages
:: 2144 links
:: The pages with the most links are:
9625.0 - Emijrp/List_of_Wikipedians_by_number_of_edits_(bots_included): 40
1363.0 - Gvangjsih_Bouxcuengh_Swcigih: 30
9112.0 - Fuzsuih: 27
1367.0 - Cungzcoj: 26
9279.0 - Vangz_Yenfanh: 19
It looks like pages and links are being created, but when I start a rails console, or the server the links aren't found.
$ rails c
jruby-1.7.5 :013 > Pages.all.count
=> 1984
jruby-1.7.5 :003 > Pages.all.reduce(0) { |count, page| count + page.links.count}
=> 0
jruby-1.7.5 :012 > Pages.all.sort_by { |p| p.links.count }.reverse[0...5].map { |p| p.links.count }
=> [0, 0, 0, 0, 0]
Here is the rake task, and this is the projects github page. Can anyone tell me why the links aren't saved?
DUMP_DIR = Rails.root.join('lib','assets')
desc "Download wiki dumps and parse them"
task :wiki, [:wiki] => 'wiki:all'
namespace :wiki do
task :all, [:wiki] => [:get, :parse] do |t, args|
# Print info about the newly created pages and links.
link_count = 0
Pages.all.each do |page|
link_count += page.links.count
end
indent "Done parsing #{args[:wiki]}"
indent "#{Pages.count} pages"
indent "#{link_count} links"
indent "The pages with the most links are:"
Pages.all.sort_by { |a| a.links.count }.reverse[0...5].each do |page|
puts "#{page.page_id} - #{page.title}: #{page.links.count}"
end
end
desc "Download wiki page and page links database dumps to /lib/assets"
task :get, :wiki do |t, args|
indent "Downloading dumps"
sh "#{Rails.root.join('lib', "get_wiki").to_s} #{args[:wiki]}"
indent "Done"
end
desc "Parse all dumps"
task :parse, [:wiki] => 'parse:all'
namespace :parse do
task :all, [:wiki] => [:pages, :pagelinks]
desc "Read wiki page dumps from lib/assests into the database"
task :pages, [:wiki] => :environment do |t, args|
parse_dumps('page', args[:wiki]) do |obj|
page = Pages.create_from_dump(obj)
end
indent = "Created #{Pages.count} pages"
end
desc "Read wiki pagelink dumps from lib/assests into the database"
task :pagelinks, [:wiki] => :environment do |t, args|
errors = 0
parse_dumps('pagelinks', args[:wiki]) do |from_id, namespace, to_title|
from = Pages.find(:page_id => from_id)
to = Pages.find(:title => to_title)
if to.nil? || from.nil?
errors = errors.succ
else
from.links << to
from.save
end
end
end
end
end
def indent *args
print ":: "
puts args
end
def parse_dumps(dump, wiki_match, &block)
wiki_match ||= /\w+/
DUMP_DIR.entries.each do |file|
file, wiki = *(file.to_s.match(Regexp.new "(#{wiki_match})-#{dump}.sql"))
if file
indent "Parsing #{wiki} #{dump.pluralize} from #{file}"
each_value(DUMP_DIR.join(file), &block)
end
end
end
def each_value(filename)
f = File.open(filename)
num_read = 0
begin # read file until line starting with INSERT INTO
line = f.gets
end until line.match /^INSERT INTO/
begin
line = line.match(/\(.*\)[,;]/)[0] # ignore begining of line until (...) object
begin
yield line[1..-3].split(',').map { |e| e.match(/^['"].*['"]$/) ? e[1..-2] : e.to_f }
num_read = num_read.succ
line = f.gets.chomp
end while(line[0] == '(') # until next insert block, or end of file
end while line.match /^INSERT INTO/ # Until line doesn't start with (...
f.close
end
app/models/pages.rb
class Pages < Neo4j::Rails::Model
include Neo4j::NodeMixin
has_n(:links).to(Pages)
property :page_id
property :namespace, :type => Fixnum
property :title, :type => String
property :restrictions, :type => String
property :counter, :type => Fixnum
property :is_redirect, :type => Fixnum
property :is_new, :type => Fixnum
property :random, :type => Float
property :touched, :type => String
property :latest, :type => Fixnum
property :length, :type => Fixnum
property :no_title_convert, :type => Fixnum
def self.create_from_dump(obj)
# TODO: I wonder if there is a way to compine these calls
page = {}
# order of this array is important, it corresponds to the data in obj
attrs = [:page_id, :namespace, :title, :restrictions, :counter, :is_redirect,
:is_new, :random, :touched, :latest, :length, :no_title_convert]
attrs.each_index { |i| page[attrs[i]] = obj[i] }
page = Pages.create(page)
return page
end
end
I must admit that I have no idea of how Neo4j works.
Transferring from other databases though, I too assume that either some validation is wrong, or maybe even something is misconfigured in your use of the database. The latter I can't give any advice on where to look, but if it's about validation, you can look at Page#errors or try calling Page#save! and see what it raises.
One crazy idea that just came to mind looking at this example is that maybe for that relation to be configured properly, you need a back reference, too.
Maybe has_n(:links).to(Page, :links) will help you. Or, if that doesn't work:
has_n(:links_left).to(Page, :links_right)
has_n(:links_right).from(Page, :links_left)
The more I look at this, the more I think the back reference to the same table is not configured properly and thus won't validate.
I am using Ruby on Rails 3.1.0 and the I18n gem. I (am implementing a plugin and) I would like to check at runtime if the I18n is missing a translation key/value pairs and, if so, to use a custom string. That is, I have:
validates :link_url,
:format => {
:with => REGEX,
:message => I18n.t(
'custom_invalid_format',
:scope => 'activerecord.errors.messages'
)
}
If in the .yml file there is not the following code
activerecord:
errors:
messages:
custom_invalid_format: This is the test error message 1
I would like to use the This is the test error message 2. Is it possible? If so, how can I make that?
BTW: For performance reasons, is it advisable to check at runtime if the translation key/value pairs is present?
You could pass a :default parameter to I18n.t:
I18n.t :missing, :default => 'Not here'
# => 'Not here'
You can read more about it here.
I just had the same question and I want to compute an automatic string in case the translation is missing. If I use the :default option I have to compute the automatic string every time even when the translation is not missing. So I searched for another solution.
You can add the option :raise => true or use I18n.translate! instead of I18n.translate. If no translation can be found an exception is raised.
begin
I18n.translate!('this.key.should.be.translated', :raise => true)
rescue I18n::MissingTranslationData
do_some_resource_eating_text_generation_here
end
I don't know how to this at runtime but you can use rake to find it out. You'll have create your own rake task for that. Here's one:
namespace :i18n do
desc "Find and list translation keys that do not exist in all locales"
task :missing_keys => :environment do
def collect_keys(scope, translations)
full_keys = []
translations.to_a.each do |key, translations|
new_scope = scope.dup << key
if translations.is_a?(Hash)
full_keys += collect_keys(new_scope, translations)
else
full_keys << new_scope.join('.')
end
end
return full_keys
end
# Make sure we've loaded the translations
I18n.backend.send(:init_translations)
puts "#{I18n.available_locales.size} #{I18n.available_locales.size == 1 ? 'locale' : 'locales'} available: #{I18n.available_locales.to_sentence}"
# Get all keys from all locales
all_keys = I18n.backend.send(:translations).collect do |check_locale, translations|
collect_keys([], translations).sort
end.flatten.uniq
puts "#{all_keys.size} #{all_keys.size == 1 ? 'unique key' : 'unique keys'} found."
missing_keys = {}
all_keys.each do |key|
I18n.available_locales.each do |locale|
I18n.locale = locale
begin
result = I18n.translate(key, :raise => true)
rescue I18n::MissingInterpolationArgument
# noop
rescue I18n::MissingTranslationData
if missing_keys[key]
missing_keys[key] << locale
else
missing_keys[key] = [locale]
end
end
end
end
puts "#{missing_keys.size} #{missing_keys.size == 1 ? 'key is missing' : 'keys are missing'} from one or more locales:"
missing_keys.keys.sort.each do |key|
puts "'#{key}': Missing from #{missing_keys[key].join(', ')}"
end
end
end
put the given in a .rake file in your lib/tasks directory and execute:
rake i18n:missing_keys
Information source is here and code on github here.
If you wish to pass variable to the message like This is the test error message {variable}
This is possible using variable in language file like below.
# app/views/home/index.html.erb
<%=t 'greet_username', :user => "Bill", :message => "Goodbye" %>
# config/locales/en.yml
en:
greet_username: "%{message}, %{user}!"
More description you can find here.
I use tail -f to display the log file when developing my Rails app.
It shows the log messages (in color! :), which is great.
But with so much information in the 80-width console, it becomes difficult to track where a certain "set" of log messages started when, say, I clicked on a button to GET a resource.
It would be easier if there was a line number or even a time stamp at the start of each log message/line. This way I could remember that I need to start looking at the log "after line number 2365" or "after 2010/10/10 23:33:23:45".
Is this possible to do? Is there some Rails internal option for this ?
why don't you just edit your desired environment's log tags
development.rb
config.log_tags [ lambda {|r| DateTime.now } ]
If you wanted to get a time stamp:
class ApplicationController < ActionController::Base
# ...
before_filter :log_tracker
def log_tracker
Rails.logger.add(1, "Log Date: #{DateTime.now}")
end
end
And format the date however you see fit....
That would work for Rails 2.1 +, prior you could access the ActiveSupport::Buffered log object with the constant: RAILS_DEFAULT_LOGGER
Get access to the actual log file with Rails.logger.instance_values["log"]
Getting the number of lines is difficult because the logger only opens the file for writing, probably for economy. I get an IOError: not opened for reading when I try.
`
Thanks #scaney.
I found a solution here.
I modified that code to add my own coloring highlights (for development only of course!) and now I can see things like 'parameters' in yellow in the console and I'm very pleased now!
In case someone is interested, here is the code I put at the end of environment.rb.
Here is my current (dirty) implementation. Will probably fix this up later (maybe make a gem, but for now this serves me fine)
WARNING
DIRTY CODE FOLLOWS! Use at your own risk!
module ActiveSupport
class BufferedLogger
#define the ANSI escape codes for normal and bright colors
$my_my_ansi_colors = {
:normal => "\x1B[0m",
:black => "\x1B[30m",
:red => "\x1B[31m", #red
:green => "\x1B[32m",
:yellow => "\x1B[33m",
:blue => "\x1B[34m",
:magenta => "\x1B[35m",
:cyan => "\x1B[36m",
:white => "\x1B[37m",
:bred => "\x1B[1m\x1B[31m", #bright red
:bgreen => "\x1B[1m\x1B[32m",
:byellow => "\x1B[1m\x1B[33m",
:bblue => "\x1B[1m\x1B[34m",
:bmagenta => "\x1B[1m\x1B[35m",
:bcyan => "\x1B[1m\x1B[36m",
:bwhite => "\x1B[1m\x1B[37m",
}
#take a string and using the keys in the hash, replace the keys in the
#string but surround the keys with ANSI color codes
#No idea how to retain the case of the key!(TODO someday)
def my_highlight msgx,hash
return msgx if msgx.blank?
return msgx if hash.empty?
hash.each_pair do |k,v|
if not k.nil?
msgx.gsub! Regexp.new(k, Regexp::IGNORECASE), $my_my_ansi_colors[:normal]+$my_my_ansi_colors[v]+k.upcase+$my_my_ansi_colors[:normal]
end
end
msgx
end
def add(severity, message = nil, progname = nil, &block)
return if #level > severity
message = (message || (block && block.call) || progname).to_s
#INSERT BEGINS
if not $myownglobalnumbercounter.nil?
$myownglobalnumbercounter += 1
else
$myownglobalnumbercounter = 1
end
level = {
0 => "DEBUG",
1 => "INFO",
2 => "WARN",
3 => "ERROR",
4 => "FATAL"
}[severity] || "U"
message = "\x1B[0m[%d %s] : %s" % [$myownglobalnumbercounter,level,message]
message = my_highlight message, {
"debug" => :white,
"error" => :bred,
"info" => :bwhite,
"warning" => :byellow,
"warn" => :byellow ,
"parameters" => :byellow,
"#" => :bgreen,
"ms " => :bmagenta,
"GET " => :bmagenta,
"PUT " => :bmagenta,
"POST " => :bmagenta,
"DELETE " => :bmagenta
}
#INSERT ENDS
message = "#{message}\n" unless message[-1] == ?\n
buffer << message
auto_flush
message
end
end
end