45 lines
1.5 KiB
Crystal
45 lines
1.5 KiB
Crystal
# Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
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# Copyright (C) 2022 Dominic Grimm
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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require "granite"
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require "granite/adapter/pg"
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require "./db/*"
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module Backend
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# Database model definitions
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module Db
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extend self
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Granite::Connections << Granite::Adapter::Pg.new(name: "pg", url: Backend.config.db.url)
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# Checks if database schema is up to date
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def schema_up_to_date_compare : Int32?
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migrations = Dir["db/migrations/*.sql"].map { |f| Path[f].basename }.sort!
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latest_migration = migrations.try(&.last.match(/\d+/).try(&.to_a.first.not_nil!.to_u64))
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if latest_migration.nil?
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return nil
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end
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begin
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MicrateDbVersion.order(tstamp: :desc).limit(1).assembler.select.run.first.version_id <=> latest_migration
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rescue PQ::PQError
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nil
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end
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end
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end
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end
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