Taking json data and converting it to a CSV file - ruby

Question

Okay... so new to Ruby here but loving it so far. My problem is I cannot get the data to go into the CSV files.
#!/usr/bin/env ruby
require 'date'
require_relative 'amf'
require 'json'
require 'csv'
amf = Amf.new
#This makes it go out 3 days
apps = amf.post( 'Appointments.getBetweenDates',
{ 'startDate' => Date.today, 'endDate' => Date.today + 4 }
)
apps.each do |app|
cor_md_params = { 'appId' => app['appID'], 'relId' => 7 }
cor_md = amf.post( 'Clinicians.getByAppIdAndRelId', cor_md_params ).first
#this is where it breaks ----->
CSV.open("ile.csv", "wb") do |csv|
csv << ["column1", "column2", "etc.", "etc.."]
csv << ([
# if added puts ([ I can display the info and then make a csv...
app['patFirstName'],
app['patMiddleName'],
app['patLastName'],
app['patBirthdate'],
app['patHin'],
app['patPhone'],
app['patCellPhone'],
app['patBusinessPhone'],
app['appTime'],
app['appID'],
app['patPostalCode'],
app['patProvince'],
app['locName'],
# note that this is not exactly accurate for follow-ups,
# where you have to replace the "1" with the actual value
# in weeks, days, months, etc
#app[ 'bookName' ], => not sure this is needed
cor_md['id'],
cor_md['providerCode'],
cor_md['firstName'],
cor_md['lastName']
].join(', '))
end
end
Now, if I remove the attempt to make the ile.cvs file and just output it with a puts, all the data shows. But I don't want to have to go into the terminal and create a csv file... I would rather just run the .rb program and have it created. Also, hopefully I am making the columns correctly as well...
The thought occurred to me that I could just add another puts above the output.
Or, better, insert a row into the array before I output it...
Really not sure what is best practice here and standards.
This is what I have done and attempted. How can I get it to cleanly output to a CSV file since my attempts are not working
Also, to clarify where it breaks, it does add the column names just not the JSON info that is parsed. I could also be completely doing this the wrong way or a way that isn't possible. I just do not know.

Answer 1

What kind of error do you get? Is it this one:
<<': undefined methodmap' for "something":String (NoMethodError)
I think, you should remove the .join(', ')
The << method of CSV accepts an array, but not a String
http://ruby-doc.org/stdlib-1.9.2/libdoc/csv/rdoc/CSV.html#method-i-3C-3C
So instead of:
cor_md['lastName']
].join(', '))
rather:
cor_md['lastName']
])
The problem with the loop (why it writes only 1 row of data)
In the body of your loop, you always reopen the file, and always rewrite what you added before. What you want to do, is probably this:
CSV.open("ile3.csv", "wb") do |csv|
csv << ["column1", "column2", "etc.", "etc.."]
apps.each do |app|
cor_md_params = { 'appId' => app['appID'], 'relId' => 7 }
cor_md = amf.post( 'Clinicians.getByAppIdAndRelId', cor_md_params ).first
#csv << your long array
end
end