OpenFdaApi

gem 'open_fda_api'

client = OpenFdaApi::Client.new
# or if you have registered an API key
client = OpenFdaApi::Client.new(api_key: ENV['OPEN_FDA_API_KEY'])

# First 20 results where (fieldA=foo AND fieldB=bar) OR (fieldC=baz AND fieldA exists)
# Sorted by (fieldD) in descending order
# Skip the first 8 results
args = { 
  search: [{"fieldA" => "foo", "fieldB" => "bar"}, {"fieldC" => "baz", "_exists_" => "fieldA"}],
  sort: [{"fieldD" => "desc"}],
  skip: 8,
  limit: 20 
}

# Animal & Veterinary API
client.animal_and_veterinary.adverse_events(args)

# Drug API
client.drugs.adverse_events(args)
client.drugs.product_labeling(args)
client.drugs.ndc_directory(args)
client.drugs.recall_enforcement_reports(args)
client.drugs.drugs_at_fda(args)

# Device API
client.device.premarket_510ks(args)
client.device.classification(args)
client.device.recall_enforcement_reports(args)
client.device.adverse_events(args)
client.device.premarket_approval(args)
client.device.recalls(args)
client.device.registrations_and_listings(args)
client.device.covid19_serological_tests(args)
client.device.unique_device_identifier(args)

# Food API
client.food.recall_enforcement_reports(args)
client.food.adverse_events(args)

# Other API
client.other.nsde(args)
client.other.substance_data_reports(args)

# Tobacco API
client.tobacco.problem_reports(args)

# Default arguments
args = {
  search: [],
  sort:   [],
  count:  [],
  skip:   0,
  limit:  1,
}

# Search for a single field
args = {
  search: [{ fieldA: "value" }]
}

# Search for field A AND field B
args = {
  search: [{ fieldA: "value", fieldB: "other value" }]
}

# Search for field A OR field B
args = {
  search: [{ fieldA: "value"}, { fieldB: "other value" }]
}

# Search for field A or field B, and skip the first 10 results
args = {
  search: [{ fieldA: "value"}, { fieldB: "other value" }],
  skip: 10
}