mankind

 sudo vim /etc/sudoers


https://docs.google.com/document/d/1cXS-hQ09_AXATTjcvpKqzrqVEwATsZHY9t2VfTkxRYg/edit#heading=h.wxbnbz4dhgpy

https://www.digitalocean.com/community/tutorials/how-to-install-software-on-kubernetes-clusters-with-the-helm-package-manager
https://docs.helm.sh/using_helm/#quickstart-guide
helm installed into /usr/local/bin/helm
tiller installed into /usr/local/bin/tiller
Run 'helm init' to configure helm.

mankind

#send a message between two users. This will create a Mailoxer::Conversation behind the scene.
user_1 = User.where(email: 'user email').first
user_2 =  User.where(email: 'user email').first
message_subject = "Review of work"
message_body = "Kindly look at my submitted work"
user_1.send_message(user_2,  message_body , message_subject)

#starting Mail_boxer::Conversation
a = Mailboxer::Conversation.find(1)
yy = a.mesages

mankind

<%= f.input key,
            as: :multi_value,
            input_html: {
              class: 'form-control',
              id: 'ubiquity-funder',
              data: { 'autocomplete-url' => "/authorities/search/local/funder",
                      'autocomplete' => key }
            },
            required: f.object.required?(key) %>

mankind

Your next task is to turn the audience field into a dropdown and the dropdown options are 'particpant', 'spectator', 'graduate', 'apprentice'
See http://samvera.github.io/customize-metadata-controlled-vocabulary.html

1. Create a yaml file conatining vocabularies ie dropdown names in config/authorities with thesame name as your field. So if your field is funder, you will have
 config/authorities/funder.yml eg https://github.com/ubiquitypress/hyku/blob/test/config/authorities/funder.yml
 http://samvera.github.io/customize-metadata-controlled-vocabulary.html#create-a-vocabulary
 In that file, add the values you want in your dropdown following the format above.

 2. Create a service to load the dropdown names or vocabularies in app/services/ 

mankind

<%= presenter.attribute_to_html(:creator, render_as: :creator) %>

mankind

<%= presenter.attribute_to_html(:formatted_creator, render_as: :faceted) %>

mankind

<%=
  f.input :contributor_group, as: :contributor_group_type,
          wrapper_html: { class: 'multi_value' },
          input_html: { class: 'form-control', multiple: true },
          include_blank: true,
          required: f.object.required?(key)
%>

mankind

module BinarySearchTree
  class Node
   
   include Comparable
   attr_reader :value
   attr_accessor :left, :right, :nodes_tracker

   def initialize(value)
     @value = value
     self.nodes_tracker = []

mankind

http://stackoverflow.com/questions/22667401/postgres-json-data-type-rails-query
http://stackoverflow.com/questions/40702813/query-on-postgres-json-array-field-in-rails

#payload: [{"kind"=>"person"}]
Segment.where("payload @> ?", [{kind: "person"}].to_json)

#data: {"interest"=>["music", "movies", "programming"]}
Segment.where("data @> ?",  {"interest": ["music", "movies", "programming"]}.to_json)
Segment.where("data #>> '{interest, 1}' = 'movies' ")
Segment.where("jsonb_array_length(data->'interest') > 1")

mankind

Assuming this table definition:

CREATE TABLE segments (segments_id serial PRIMARY KEY, payload jsonb);
With JSON values like this:

INSERT INTO segments (payload)
VALUES ('{
     "a": [
        {

"kind": "person",