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23 lines
705 B
JavaScript
23 lines
705 B
JavaScript
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const Tag = require('../api/models/tag')
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const Event = require('../api/models/event')
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const Sequelize = require('sequelize')
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const log = require('../log')
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module.exports = {
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// remove tags not related to any events
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async _cleanUnused () {
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const tags = await Tag.findAll({
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include: [{ model: Event, as: 'events', required: false, attributes: [], through: { attributes: [] } }],
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group: ['tag.tag'],
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having: Sequelize.where(Sequelize.fn('COUNT', Sequelize.col('events.id')), '=', 0)
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})
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if (!tags.length) { return }
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log.info(`Remove ${tags.length} unrelated tags`)
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await Tag.destroy({
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where: { tag: { [Sequelize.Op.in]: tags.map(p => p.tag) } }
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})
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}
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}
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