kopia lustrzana https://github.com/learn-awesome/learndb
49 wiersze
1.1 KiB
Ruby
49 wiersze
1.1 KiB
Ruby
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require 'pg'
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require 'active_record'
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require 'json'
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# see schema.sql
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# To minimize file size, don't export properties with value = null, '', [], false etc. Handle that in code.
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# skip hname if it is same as name
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module CleanJson
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def as_json(options={})
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super(options).tap do |json|
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json.delete_if{ |k,v|
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v.blank? || (k == :hname && v == json[:name])
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}.as_json unless options.try(:delete, :null)
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end
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end
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end
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class ApplicationRecord < ActiveRecord::Base
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include CleanJson
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self.abstract_class = true
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end
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class Topic < ApplicationRecord; end
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class Creator < ApplicationRecord; end
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class Item < ApplicationRecord
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def as_json(options={})
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hash = super(options)
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hash["reviews"] = hash["reviews"].map { |r|
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r.delete_if { |k,v| v.blank? }
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} if hash["reviews"]
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hash
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end
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end
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ActiveRecord::Base.logger = Logger.new(STDERR)
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ActiveRecord::Base.establish_connection(
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{ adapter: 'postgresql',
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database: 'postgres',
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host: 'localhost',
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username: 'postgres',
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password: 'password',
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port: 5407
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}
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)
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puts "Postgres: Found #{Topic.count} Topics, #{Creator.count} Creators, #{Item.count} Items"
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