I have the following in my seeds.rb file. When I run rake db:seed, I get an error saying:
rake aborted!
No such file or directory - MSFT_1_100.json
This displays even though I have the file 'MSFT_1_100.json' in the same folder as the seeds.rb file (/project/db). Any advice on how to fix this?
require 'json'
file_name = 'MSFT_1_100.json'
data = File.open(file_name, "r").read
my_object = JSON.load(data)
my_object.each do |item|
new_review = Review.create(:company => 'Microsoft', :pro => item['pro'], :con => item['con'], :advice => item['advice'], :role => item['role'])
end
try to do this instead of just giving the file_name directly
file_name = File.expand_path(File.join(File.dirname(__FILE__),'MSFT_1_100.json'))
Related
I used the following code to try to import a csv file into rails.
(it was provided by Erik on Rails blog)
#lib/tasks/import.rake
desc "Imports a CSV file into an ActiveRecord table"
task :csv_model_import, :filename, :model, :needs => :environment do |task,args|
lines = File.new(args[:filename]).readlines
header = lines.shift.strip
keys = header.split(',')
lines.each do |line|
values = line.strip.split(',')
attributes = Hash[keys.zip values]
Module.const_get(args[:model]).create(attributes)
end
end
then I ran the rake task rake csv_model_import[excelfilename.csv, name]. I have tried many approaches but just cant seem to get the csv file into my db/active record.
Error I received was :
"NoMethodError: undefined method `map' for :needs:Symbol"
I have no clue how to solve it. Please help me out guys, thanks.
I think you need brackets around your rake task arguments.
Try changing this:
task :csv_model_import, :filename, :model, :needs => :environment do |task,args|
to this:
task :csv_model_import, [:filename, :model, :needs] => :environment do |task,args|
I'm very new to the concept of importing data into a SQL database with CSV. I've followed some stackoverflow posts but I'm getting an error. The error states, Errno::ENOENT: No such file or directory # rb_sysopen - products.csv after running rake import:data. I have csv required in my application.rb as well as I have created a csv file and placed it in TMP. Here is my code so far. I understand I may be asking for a lot from the community but if someone were to answer this question, can you provide some more insight into CSV and rake functions. Thanks so much!!!
<b>import.rake</b>
namespace :import do
desc "imports data from a csv file"
task :data => :environment do
require 'csv'
CSV.foreach('tmp/products.csv') do |row|
name = row[0]
price = row[1].to_i
Product.create( name: name, price: price )
end
end
end
Specify the full path to the CSV file.
For example, if the file is in /tmp/ use:
CSV.foreach('/tmp/products.csv') do |row|
If the products.csv file is in your application's tmp directory use:
CSV.foreach(Rails.root.join('tmp', 'products.csv')) do |row|
I ran into something similar, it was forgetting to put both parenthesis with the braces so you might want to try going from:
Product.create( name: name, price: price )
to:
Product.create({ name: name, price: price })
Check out the smarter_csv Gem.
In it's simplest form you can do this:
SmarterCSV.process('tmp/products.csv').each do |hash|
Product.create( hash )
end
Add smarter_csv to your Gemfile, so it's auto-loaded when you require the environment in your Rake task
This gives you:
namespace :import do
desc 'imports data from given csv file'
task :data, [:filename] => :environment do |t, args|
fail "File not found" unless File.exists? args[:filename]
options = {} # add options if needed
SmarterCSV.process( args[:filename], options).each do |hash|
Product.create( hash )
end
end
end
Call it like this:
rake import:data['/tmp/products.csv']
See also: https://github.com/tilo/smarter_csv
I am writing a Ruby on Rails application which has a Rake task that can parse a CSV file.
Here is the code:
desc "Import Channels into DB\n Usage: rake channel_import"
task :import_channels, :path_to_channel_list do |t, args|
require "#{Rails.root}/app/models/channel"
require "csv"
filePath = args.path_to_channel_list
puts "Filepath received = #{filePath}"
csv = CSV.read("#{filePath}", :encoding => 'windows-1251:utf-8')
csv.each_with_index do |row, i|
if [0].include?(i)
puts "Skipping over row #{i}"
next
end
if(row.nil?)
puts "row[#{i}] was nil"
else
channelName = nil
classif = nil
owner = nil
channelName = row[0].force_encoding('UTF-8')
classif = row[1].force_encoding('UTF-8')
owner = row[2].force_encoding('UTF-8')
if (channelName.nil?)
puts "Channel name for row #{i} was nil"
#add entry to Log file or errors database
next #skip this row of the csv file and go to next row
else
channel_hash = Hash.new("name" =>"#{channelName}", "classification" => "#{classif}", "owner" => "#{owner}" )
end
puts "\nChannel Name = #{channelName}\nClassification = #{classif}\n Ownership = #{owner}"
#If channel name exists in the Database, update it
xisting_channel = nil
xisting_channel = Channel.find_by channel_name: '#{channelName}'
if(xisting_channel.nil?)
#create a new channel
#new_channel = Channel.create(channel_hash)
puts "Inserted....#{#new_channel.inspect}"
else
#update existing channel
Channel.update(xisting_channel.id, :classification => "#{classif}", :ownership => "#{owner}" )
puts "Updated...."
puts "channel_hash = #{channel_hash.inspect} "
end#end if/else
end#end if/else
end #end CSV.each
end
When I run this code I get the following error message:
MRMIOMP0903:am AM$ rake import_channels[/XXXXXXXX/Channellist.csv]
Filepath received = /XXXXXXX/Channellist.csv
Skipping over row 0
Channel Name = APTN HD+
Classification = Specialty
Ownership = Aboriginal Peoples Television Network
rake aborted!
ActiveRecord::ConnectionNotEstablished
I tried to create a Channel object using IRB and it worked just fine. The DB is created and I'm seeing it using MySQL WorkBench. All tables are there, however, I am unable to create the Channel object from the Rake task.
My hypothesis is, perhaps outside of a certain folder/hierarchy the app cannot access the ActiveRecord::Base class or something like this.
Any suggestions on how to make this work?
UPDATE:
BAsed on the answer by Phillip Hallstrom
I changed the top line to load the environment
task :import_channels => :environment do|t, args|
Then tried rake import_channels and got this error:
rake aborted!
undefined method `safe_constantize' for #<Hash:0x007fbeacd89920>
You need to load the environment prior to running your Rake task. I'm not familiar with your multiple task name options there, but for a simple example, you'd want this:
task : import_channels => :environment do
Total ruby on rails newbie here.
I'm trying to populate a database within a ruby on rails framework. This is what my seeds.rb file looks like:
f = File.open("db/courses.xml")
doc = Nokigiri::XML(f)
f.close
doc.css("course").each do |node|
children = node.children
Course.create(:name => children.css("name"),
:description => children.css("description"))
end
I haven't been able to test this code, because the rake db:seed command keeps saying "No such file or directoy --- courses.xml". Note that I've both tried "courses.xml" and "db/courses.xml" as paths.
The file courses.xml is in the same folder as the seeds.rb file.
Try specifying the path from the root of the application. Like this:
f = File.open(File.join(Rails.root, 'db', 'courses.xml'))
How do I regenerate all the YML fixture files? I accidentally deleted them.
#brian,
I'm using the following script to generate the fixtures from a given sql
This is under my lib/task directory as a rake task
namespace :fixture_generator do
desc "generate fixtures for a given sql query from the current development database"
task :fixture_generator, [:sql, :file_name] => :environment do |t, args|
args.with_defaults(:sql => nil, :file_name => nil)
i = "000"
p "creating fixture - #{args.file_name}"
File.open("#{Rails.root}/test/fixtures/#{args.file_name}.yml", 'a+') do |file|
data = ActiveRecord::Base.connection.select_all(args.sql)
file.write data.inject({}) { |hash, record|
number = i.succ!
hash["#{args.file_name}_#{number}"] = record
hash
}.to_yaml
end
end
end
Usage, Say I want to generate fixture for users table
rake fixture_generator:fixture_generator["select * from users","users"]
And also, If you run another query with the same fixture file name, it will append to the existing one
HTH