65 lines
2.4 KiB
Ruby
65 lines
2.4 KiB
Ruby
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# frozen_string_literal: true
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class MovePostNoticesToJson < ActiveRecord::Migration[6.0]
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def up
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execute <<~SQL
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INSERT INTO post_custom_fields(post_id, name, value, created_at, updated_at)
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SELECT
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posts.id,
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'notice',
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CASE
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WHEN pcf_type.value = 'custom' THEN json_build_object('type', pcf_type.value, 'raw', pcf_args.value, 'cooked', pcf_args.value)
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WHEN pcf_type.value = 'new_user' THEN json_build_object('type', pcf_type.value)
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WHEN pcf_type.value = 'returning_user' THEN json_build_object('type', pcf_type.value, 'last_posted_at', pcf_args.value)
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END,
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pcf_type.created_at created_at,
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pcf_type.updated_at updated_at
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FROM posts
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JOIN post_custom_fields pcf_type ON posts.id = pcf_type.post_id AND pcf_type.name = 'notice_type'
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LEFT JOIN post_custom_fields pcf_args ON posts.id = pcf_args.post_id AND pcf_args.name = 'notice_args'
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SQL
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execute "DELETE FROM post_custom_fields WHERE name = 'notice_type' OR name = 'notice_args'"
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add_index :post_custom_fields,
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:post_id,
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unique: true,
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name: "index_post_custom_fields_on_notice",
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where: "name = 'notice'"
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remove_index :post_custom_fields, name: "index_post_custom_fields_on_notice_type"
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remove_index :post_custom_fields, name: "index_post_custom_fields_on_notice_args"
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end
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def down
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execute <<~SQL
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INSERT INTO post_custom_fields(post_id, name, value, created_at, updated_at)
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SELECT post_id, 'notice_type', value::json->>'type', created_at, updated_at
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FROM post_custom_fields
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WHERE name = 'notice'
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SQL
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execute <<~SQL
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INSERT INTO post_custom_fields(post_id, name, value, created_at, updated_at)
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SELECT post_id, 'notice_args', COALESCE(value::json->>'cooked', value::json->>'last_posted_at'), created_at, updated_at
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FROM post_custom_fields
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WHERE name = 'notice'
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SQL
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execute "DELETE FROM post_custom_fields WHERE name = 'notice'"
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add_index :post_custom_fields,
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:post_id,
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unique: true,
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name: "index_post_custom_fields_on_notice_type",
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where: "name = 'notice_type'"
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add_index :post_custom_fields,
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:post_id,
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unique: true,
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name: "index_post_custom_fields_on_notice_args",
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where: "name = 'notice_args'"
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remove_index :index_post_custom_fields_on_notice
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end
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end
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