Added generic resource import logic to provide base classes containing the generic core logic for importing single resources. Direct import from remote objects to local models is possible by using Import::ModelResource.
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84
lib/import/base_resource.rb
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84
lib/import/base_resource.rb
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module Import
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class BaseResource
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include Import::Helper
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def initialize(resource)
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import(resource)
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end
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def import_class
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raise "#{self.class.name} has no implmentation of the needed 'import_class' method"
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end
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private
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def import(resource)
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create_or_update(map(resource))
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end
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def create_or_update(resource)
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return if updated?(resource)
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create(resource)
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end
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def updated?(resource)
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@resource = lookup_existing(resource)
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return false if !@resource
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@resource.update_attributes(resource)
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post_update(
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instance: @resource,
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attributes: resource
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)
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true
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end
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def lookup_existing(resource)
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import_class.find_by(name: resource[:name])
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end
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def create(resource)
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@resource = import_class.new(resource)
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@resource.save
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post_create(
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instance: @resource,
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attributes: resource
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)
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end
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def defaults(_resource)
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{
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created_by_id: 1,
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updated_by_id: 1,
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}
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end
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def map(resource)
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mapped = from_mapping(resource)
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attributes = defaults(resource).merge(mapped)
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attributes.deep_symbolize_keys
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end
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def from_mapping(resource)
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return resource if !mapping
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ExternalSync.map(
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mapping: mapping,
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source: resource
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)
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end
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def mapping
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Setting.get(mapping_config)
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end
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def mapping_config
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self.class.name.to_s.sub('Import::', '').gsub('::', '_').underscore + '_mapping'
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end
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def post_create(_args)
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end
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def post_update(_args)
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end
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end
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end
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18
lib/import/model_resource.rb
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18
lib/import/model_resource.rb
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module Import
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class ModelResource < Import::BaseResource
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def import_class
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model_name.constantize
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end
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def model_name
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@model_name ||= self.class.name.split('::').last
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end
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private
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def post_create(_args)
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reset_primary_key_sequence(model_name.underscore.pluralize)
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end
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end
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end
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10
spec/import/base_resource_spec.rb
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10
spec/import/base_resource_spec.rb
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require 'rails_helper'
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RSpec.describe Import::BaseResource do
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it "needs an implementation of the 'import_class' method" do
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expect {
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described_class.new(attributes_for(:group))
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}.to raise_error(RuntimeError)
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end
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end
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35
spec/import/model_resource_spec.rb
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35
spec/import/model_resource_spec.rb
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require 'rails_helper'
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RSpec.describe Import::ModelResource do
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before do
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module Import
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module Test
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class Group < Import::ModelResource
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end
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end
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end
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end
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it 'creates model Objects by class name' do
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group_data = attributes_for(:group)
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expect {
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Import::Test::Group.new(group_data)
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}.to change { Group.count }.by(1)
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end
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it 'updates model Objects by class name' do
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group = create(:group)
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update_attributes = group.serializable_hash
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update_attributes[:note] = 'Updated'
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expect {
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Import::Test::Group.new(update_attributes)
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group.reload
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}.to change { group.note }
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end
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end
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