I'm new to ROR and still trying to wrap my mind around the MVC construct.
Hope someone can spot what is probably a simple error here.
I need to have a user upload a CSV file, parse the header (the table field
names) then each row of data, and import the data into its respective
tables.
In the view I have:
<% form_tag ({:action => 'uploadFile'}, :multipart => true) do %>
<p><label for="upload_file">Select File</label> :
<%= file_field 'upload', 'datafile' %></p>
<%= submit_tag "Upload" %>
<% end %>
in the controller:
class UploadController < ApplicationController
def index
render :file => 'app\views\upload\uploadfile.html.erb'
end
def uploadFile
post = Import.proc_csv( params[:upload])
flash[:notice] = "File imported successfully"
redirect_to :action => :index
rescue
flash[:error] = "Error importing file"
redirect_to :action => 'index'
end
end
and in the model:
class Import < ActiveRecord::Base
require 'fastercsv'
def self.proc_csv(upload)
row_count = 0
FasterCSV.foreach([:csv_import][:file], :headers => :first_row) do |row|
@gr =
Genotype_runs.create(:genotype_date_1=>row[4],:genotype_date_2=>row[5],:genotype_date_3=>row[6])
# use the id of the Genotype_runs record to link to Genotype_data rec.
Genotype_data.create(:genotype_run_id=> gr.id, :box=>row[0],
:subjectid=>row[1], :labid=>row[2], :well=>row[4],
:created_at=>Time.now,:updated_at=>Time.now)
# print message showing import
$stderr.print "\r%5d ..." % csv.lineno
$stderr.flush
row_count = row_count + 1
end
end
def self.save(upload)
name = upload['datafile'].original_filename
directory = "public/data/import"
# create the file path
path = File.join(directory, name)
# write the file
File.open(path, "wb") { |f| f.write(upload['datafile'].read) }
end
end
The file upload screen allows me to upload a file, but when I submit it, I
get the following error:
Errno::ENOENT in UploadController#index
No such file or directory - app\views\upload\uploadfile.html.erb
Which is rather a puzzle for me...any suggestions/insights/comments appreciated!
--Rick
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