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Real world database schemas contain a lot of duplicated data. Some column names like `id`, `created_at` etc can easily be repeated hundreds of times. Same for SqlTypeMetada, most database will contain only a limited number of possible combinations. This result in a lot of wasted memory. The idea here is to make these data sctructures immutable, use a registry to substitute similar instances with pre-existing ones.
43 lines
1 KiB
Ruby
43 lines
1 KiB
Ruby
# frozen_string_literal: true
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module ContactFakeColumns
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def self.extended(base)
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base.class_eval do
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establish_connection(adapter: "fake")
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connection.data_sources = [table_name]
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connection.primary_keys = {
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table_name => "id"
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}
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column :id, "integer"
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column :name, "string"
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column :age, "integer"
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column :avatar, "binary"
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column :created_at, "datetime"
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column :awesome, "boolean"
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column :preferences, "string"
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column :alternative_id, "integer"
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serialize :preferences
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belongs_to :alternative, class_name: "Contact"
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end
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end
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# mock out self.columns so no pesky db is needed for these tests
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def column(name, sql_type = nil, options = {})
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connection.merge_column(table_name, name, sql_type, options)
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end
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end
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class Contact < ActiveRecord::Base
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extend ContactFakeColumns
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end
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class ContactSti < ActiveRecord::Base
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extend ContactFakeColumns
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column :type, "string"
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def type; "ContactSti" end
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end
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