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5a890013ef
Many migrations currently fail to run with:
> Directly inheriting from ActiveRecord::Migration is not supported.
> Please specify the Rails release the migration was written for:
>
> class Example < ActiveRecord::Migration[4.2]
I've annotated those that I need to run with the Rails version at the
time each was committed:
rake db:migrate:status \
| grep --perl-regexp --only-matching '(?<=^ down )\d{14}' \
| while read -r id; do
path="$(ls -1 db/migrate/${id}_*.rb)"
version="$(git show "$(git log --diff-filter=A --pretty=format:%H -- "$path")":Gemfile.lock \
| grep --perl-regexp --only-matching '(?<=^ rails \()\d+\.\d+(?=(\.\d+)+\))')"
sed --in-place -e "s/\(< ActiveRecord::Migration\)$/\\1[$version]/" "$path"
done
41 lines
1.2 KiB
Ruby
41 lines
1.2 KiB
Ruby
# frozen_string_literal: true
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class AddShortNameToTracks < ActiveRecord::Migration[4.2]
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class TmpProgram < ActiveRecord::Base
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self.table_name = 'programs'
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end
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class TmpTrack < ActiveRecord::Base
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self.table_name = 'tracks'
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end
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def change
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add_column :tracks, :short_name, :string
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TmpTrack.reset_column_information
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TmpProgram.find_each do |program|
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# Keeps count of how many times we've encountered a short_name
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track_name_counter = {}
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TmpTrack.where(program_id: program.id).find_each do |track|
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# Replace spaces with undercores and remove the non alphanumeric characters that aren't underscores or dashes
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short_name = track.name.tr(' ', '_').tr('^a-zA-Z0-9_-', '')
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# If we've seen that short_name before then add the counter in the end to avoid collisions
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if track_name_counter[short_name]
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track_name_counter[short_name] += 1
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short_name += "_#{track_name_counter[short_name]}"
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else
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# Initialize the counter
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track_name_counter[short_name] = 0 unless track_name_counter[short_name]
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end
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track.short_name = short_name
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track.save!
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end
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end
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change_column_null :tracks, :short_name, false
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end
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end
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