59 lines
1.7 KiB
Ruby
59 lines
1.7 KiB
Ruby
class PostAlertObserver < ActiveRecord::Observer
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observe :post_action, :post_revision
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def alerter
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@alerter ||= PostAlerter.new
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end
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# Dispatch to an after_save_#{class_name} method
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def after_save(model)
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method_name = callback_for('after_save', model)
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send(method_name, model) if respond_to?(method_name)
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end
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# Dispatch to an after_create_#{class_name} method
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def after_create(model)
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method_name = callback_for('after_create', model)
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send(method_name, model) if respond_to?(method_name)
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end
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def after_save_post_action(post_action)
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# We only care about deleting post actions for now
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return if post_action.deleted_at.blank?
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Notification.where(post_action_id: post_action.id).each(&:destroy)
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end
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def after_create_post_action(post_action)
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# We only notify on likes for now
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return unless post_action.is_like?
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post = post_action.post
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return if post_action.user.blank?
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alerter.create_notification(post.user,
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Notification.types[:liked],
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post,
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display_username: post_action.user.username,
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post_action_id: post_action.id)
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end
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def after_create_post_revision(post_revision)
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post = post_revision.post
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return unless post
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return if post_revision.user.blank?
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return if post_revision.user_id == post.user_id
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return if post.topic.private_message?
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alerter.create_notification(post.user, Notification.types[:edited], post, display_username: post_revision.user.username)
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end
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protected
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def callback_for(action, model)
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"#{action}_#{model.class.name.underscore.gsub(/.+\//, '')}"
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end
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end
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