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30990006a9
This reduces chances of errors where consumers of strings mutate inputs and reduces memory usage of the app. Test suite passes now, but there may be some stuff left, so we will run a few sites on a branch prior to merging
71 lines
2.1 KiB
Ruby
71 lines
2.1 KiB
Ruby
# frozen_string_literal: true
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class DisallowMultiLevelsThemeComponents < ActiveRecord::Migration[5.2]
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def up
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@handled = []
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top_parents = DB.query("
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SELECT parent_theme_id, child_theme_id
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FROM child_themes
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WHERE parent_theme_id NOT IN (SELECT child_theme_id FROM child_themes)
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")
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top_parents.each do |top_parent|
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migrate_child(top_parent, top_parent)
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end
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if @handled.size > 0
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execute("
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DELETE FROM child_themes
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WHERE parent_theme_id NOT IN (#{top_parents.map(&:parent_theme_id).join(", ")})
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")
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end
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execute("
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UPDATE themes
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SET user_selectable = false
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FROM child_themes
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WHERE themes.id = child_themes.child_theme_id
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AND themes.user_selectable = true
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")
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default = DB.query_single("SELECT value FROM site_settings WHERE name = 'default_theme_id'").first
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if default
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default_child = DB.query("SELECT 1 AS one FROM child_themes WHERE child_theme_id = ?", default.to_i).present?
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execute("DELETE FROM site_settings WHERE name = 'default_theme_id'") if default_child
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end
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end
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def down
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raise ActiveRecord::IrreversibleMigration
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end
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private
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def migrate_child(parent, top_parent)
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unless already_exists?(top_parent.parent_theme_id, parent.child_theme_id)
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execute("
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INSERT INTO child_themes (parent_theme_id, child_theme_id, created_at, updated_at)
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VALUES (#{top_parent.parent_theme_id}, #{parent.child_theme_id}, now(), now())
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")
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end
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@handled << [top_parent.parent_theme_id, parent.parent_theme_id, parent.child_theme_id]
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children = DB.query("
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SELECT parent_theme_id, child_theme_id
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FROM child_themes
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WHERE parent_theme_id = :child", child: parent.child_theme_id
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)
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children.each do |child|
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unless @handled.include?([top_parent.parent_theme_id, child.parent_theme_id, child.child_theme_id])
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migrate_child(child, top_parent)
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end
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end
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end
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def already_exists?(parent, child)
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DB.query("SELECT 1 AS one FROM child_themes WHERE child_theme_id = :child AND parent_theme_id = :parent", child: child, parent: parent).present?
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end
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end
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