Lopikamuna

Using the Python Requests module to POST documents to Solr Method Definition The first method accepts the Solr host URL and the JSON payload.  The auto-commit feature is turned off.  The second method will not POST any data, but it will commit any pending transactions. def post (host, data): headers = { "content-type" : "application/json" } params = { "commit" : "false" } return requests . post(host, data = data, params = params, headers = headers) def commit (host): headers = { "content-type" : "application/json" } params = { "commit" : "true" } return requests . post(host, params = params, headers = headers) Method Invocation The most important part of the method invocation is construction of the JSON payload: payload = { "add" : { "doc" : str (data) } } The payload has three aspects: The add  command tells Solr that a Create or Update is going to be perf...

Using module eval to Define Instance Methods in a Ruby Gem to Enable Per Model Configuration In the last post, I mentioned that I wrote a small gem to post changes to ActiveRecord models to Twitter. In that version, the configuration was handled by a YAML file. I wanted to evolve the gem so that developers could switch Twitter accounts for each model. Basically, I wanted to able to the use the following: class Place { :username => alastrina_gem, :password => QQQQQQ } end After a bit of tinkering and searching, I decided to use the following code in my gem. ALASTRINA_CONFIGURATION_FILE = config/alastrina.yml module Alastrina def self.included(base) base.extend(ClassMethods) end module ClassMethods def alastrina hash module_eval do def configuration throw "Missing #{ALASTRINA_CONFIGURATION_FILE}" unless File.exists? ALASTRINA_CONFIGURATION_FILE @config ||= YAML::load(File.read(ALASTRINA_CONFIGURATION_FILE)) end if hash[:twitter] def send_to_twitter? true end eval...