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# frozen_string_literal: true
class CapDesignsFilenameLengthToNewLimit < ActiveRecord::Migration[6.0]
DOWNTIME = false
CHAR_LENGTH = 255
MODIFIED_NAME = 'gitlab-modified-'
MODIFIED_EXTENSION = '.jpg'
def up
arel_table = Arel::Table.new(:design_management_designs)
# Design filenames larger than the limit will be renamed to "gitlab-modified-{id}.jpg",
# which will be valid and unique. The design file itself will appear broken, as it is
# understood that no designs with filenames that exceed this limit will be legitimate.
# See https://gitlab.com/gitlab-org/gitlab/-/merge_requests/33565/diffs#note_355789080
new_value_clause = Arel::Nodes::NamedFunction.new(
'CONCAT',
[
Arel::Nodes.build_quoted(MODIFIED_NAME),
arel_table[:id],
Arel::Nodes.build_quoted(MODIFIED_EXTENSION)
]
)
where_clause = Arel::Nodes::NamedFunction.new(
'CHAR_LENGTH',
[arel_table[:filename]]
).gt(CHAR_LENGTH)
update_arel = Arel::UpdateManager.new.table(arel_table)
.set([[arel_table[:filename], new_value_clause]])
.where(where_clause)
ActiveRecord::Base.connection.execute(update_arel.to_sql)
end
def down
# no-op : the original filename is lost forever
end
end
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