320 行
11 KiB
Ruby
320 行
11 KiB
Ruby
class WikiPagesController < ApplicationController
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rescue_from Wiki::Commit::Conflict, with: :render_wiki_conflict
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def index
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# 互換性のための化石リソース
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# TODO: ヘルプおよびタグ・グループ追加後に，
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# TODO: タグ説明とヘルプ、タグ・グループから取得する作りに変更する．
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#
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title = params[:title].to_s.strip
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descriptions = TagDescription.where(language_code: 'ja')
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.includes(tag: :tag_names)
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pages = unmigrated_wiki_pages.includes(tag_name: :tag)
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if title.present?
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pattern = "%#{ ApplicationRecord.sanitize_sql_like(title) }%"
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descriptions = descriptions.joins(tag: :tag_names)
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.where(tag_names: { language_code: 'ja', primary_flg: true })
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.where('tag_names.name LIKE ?', pattern).limit(20)
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pages = pages.where('tag_names.name LIKE ?', pattern).limit(20)
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end
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json = descriptions.map { |description| WikiPageRepr.tag_description(description) }
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json.concat(WikiPageRepr.base(pages))
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json = json.first(20) if title.present?
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render json:
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end
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def show
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tag_description = TagDescription.find_by(id: params[:id])
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return render_wiki_page_by_tag_description tag_description if tag_description
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page = WikiPage.joins(:tag_name)
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.includes(tag_name: :tag)
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.find_by(id: params[:id])
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render_wiki_page_or_404 page
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end
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def show_by_title
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title = params[:title].to_s.strip
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tag_description = tag_description_by_title(title)
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return render_wiki_page_by_tag_description tag_description if tag_description
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page = WikiPage.joins(:tag_name)
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.includes(tag_name: :tag)
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.find_by(tag_name: { name: title })
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render_wiki_page_or_404 page
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end
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def exists
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return head :no_content if TagDescription.exists?(id: params[:id])
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head WikiPage.exists?(id: params[:id]) ? :no_content : :not_found
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end
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def exists_by_title
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title = params[:title].to_s.strip
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return head :no_content if tag_description_by_title(title)
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exists = WikiPage.joins(:tag_name).exists?(tag_names: { name: title })
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head exists ? :no_content : :not_found
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end
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def diff
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id = params[:id]
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return render_bad_request('id は必須です．') if id.blank?
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from = params[:from].presence
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to = params[:to].presence
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description = TagDescription.find_by(id:)
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if description
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versions = description_versions(description)
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from_rev = from && versions.find(from)
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to_rev = to ? versions.find(to) : versions.find_by!(version_no: description.version_no)
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resource = WikiPageRepr.tag_description(description)
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else
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page = WikiPage.joins(:tag_name).includes(tag_name: :tag).find(id)
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from_rev = from && page.wiki_revisions.find(from)
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to_rev = to ? page.wiki_revisions.find(to) : page.current_revision
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if ((from_rev && !from_rev.content?) || !to_rev&.content?)
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return render_unprocessable_entity('差分を表示できない版です．')
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end
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resource = WikiPageRepr.base(page)
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end
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diffs = Diff::LCS.sdiff(from_rev&.body&.lines || [], to_rev.body.lines)
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diff_json = diffs.map { |change|
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case change.action
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when ?=
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{ type: 'context', content: change.old_element }
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when ?!
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[{ type: 'removed', content: change.old_element },
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{ type: 'added', content: change.new_element }]
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when ?+
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{ type: 'added', content: change.new_element }
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when ?-
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{ type: 'removed', content: change.old_element }
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end
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}.flatten.compact
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render json: { wiki_page_id: resource.fetch('id'),
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title: resource.fetch('title'),
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deprecated_at: resource.fetch('deprecated_at'),
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older_revision_id: from_rev&.id,
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newer_revision_id: to_rev.id,
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diff: diff_json }
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end
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def create
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return head :unauthorized unless current_user
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return head :forbidden unless current_user.gte_member?
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title = params[:title].to_s.strip
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body = params[:body].to_s
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message = params[:message].presence
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return render_unprocessable_entity('タイトルは必須です．', field: :title) if title.blank?
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return render_unprocessable_entity('本文は必須です．', field: :body) if body.blank?
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page = if title.include?(':')
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ApplicationRecord.transaction do
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tag_name = TagName.find_or_create_by!(language_code: 'ja', name: title) do |name|
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name.script_code = 'Jpan'
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name.primary_flg = true
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name.auto_generated = false
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end
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Wiki::Commit.create_legacy_content!(
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tag_name:, body:, created_by_user: current_user, message:)
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end
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else
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tag_name = TagName.find_by(language_code: 'ja', name: title)
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return render_unprocessable_entity field: :title unless tag_name&.tag
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TagDescriptionOperation.create!(
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tag: tag_name.tag, body:, created_by_user: current_user, message:)
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end
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render json: WikiPageRepr.base(page), status: :created
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rescue ActiveRecord::RecordInvalid => e
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render_validation_error e.record
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rescue ActiveRecord::RecordNotUnique
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render_record_not_unique
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end
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def update
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return head :unauthorized unless current_user
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return head :forbidden unless current_user.gte_member?
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title = params[:title]&.strip
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body = params[:body].to_s
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return render_unprocessable_entity('タイトルは必須です．', field: :title) if title.blank?
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return render_unprocessable_entity('本文は必須です．', field: :body) if body.blank?
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page = WikiPage.find(params[:id])
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base_revision_id = params[:base_revision_id].presence
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ApplicationRecord.transaction do
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page.lock!
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old_title = page.title
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tag = page.tag_name.tag
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if tag && title != old_title
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TagVersioning.ensure_snapshot!(tag, created_by_user: current_user)
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end
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page.tag_name.update!(name: title) if title != old_title
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message = params[:message].presence
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Wiki::Commit.content!(page:,
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body:,
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created_user: current_user,
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message:,
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base_revision_id:)
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if tag && title != old_title
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tag.reload
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TagVersionRecorder.record!(tag:, event_type: :update, created_by_user: current_user)
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end
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end
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head :ok
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end
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def changes
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id = params[:id].presence
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description = id && TagDescription.find_by(id:)
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if description
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return render json: description_changes(TagDescription.where(id: description.id))
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end
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pages = id ? WikiPage.where(id:) : unmigrated_wiki_pages
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revisions = WikiRevision.joins(wiki_page: :tag_name)
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.where(wiki_page_id: pages.select(:id))
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.includes(:created_user, wiki_page: { tag_name: :tag })
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.order(id: :desc).limit(200)
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json = revisions.map { |rev|
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{ revision_id: rev.id,
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pred: rev.base_revision_id,
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succ: nil,
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wiki_page: { id: rev.wiki_page_id,
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title: rev.wiki_page.title,
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deprecated_at: rev.wiki_page.deprecated_at },
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user: rev.created_user && { id: rev.created_user.id, name: rev.created_user.name },
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kind: rev.kind,
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message: rev.message,
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timestamp: rev.created_at }
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}
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unless id
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json.concat(description_changes(TagDescription.where(language_code: 'ja')))
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json.sort_by! { |row| -row[:revision_id] }
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end
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render json: json.first(200)
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end
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private
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def render_wiki_page_or_404 page
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return head :not_found unless page
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rev = find_revision(page)
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return head :not_found unless rev
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if rev.redirect?
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return (
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redirect_to wiki_page_by_title_path(title: rev.redirect_page.title),
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status: :moved_permanently)
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end
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body = rev.body
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revision_id = rev.id
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pred = page.pred_revision_id(revision_id)
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succ = page.succ_revision_id(revision_id)
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updated_at = rev.created_at
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render json: WikiPageRepr.base(page).merge(body:, revision_id:, pred:, succ:, updated_at:)
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end
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def render_wiki_page_by_tag_description description
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versions = description_versions(description)
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historical = params[:version].present?
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rev = historical ? versions.find_by(id: params[:version]) :
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versions.find_by(version_no: description.version_no)
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return head :not_found unless rev
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pred = versions.find_by(version_no: rev.version_no - 1)&.id
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succ = versions.find_by(version_no: rev.version_no + 1)&.id
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body = historical ? rev.body : description.body
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updated_at = historical ? rev.created_at : description.updated_at
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render json: WikiPageRepr.tag_description(description).merge(
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body:, revision_id: rev.id, pred:, succ:, updated_at:)
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end
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def description_versions description
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TagDescriptionVersion.where(tag_id: description.tag_id,
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language_code: description.language_code)
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end
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def tag_description_by_title title
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TagDescription.joins(tag: :tag_names)
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.find_by(language_code: 'ja', tag_names: { language_code: 'ja', name: title })
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end
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def unmigrated_wiki_pages
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descriptions = TagDescription.where(language_code: 'ja')
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WikiPage.joins(:tag_name).where.not(id: descriptions.select(:id))
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.where('tag_names.tag_id IS NULL OR tag_names.tag_id NOT IN (?)',
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descriptions.select(:tag_id))
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end
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def description_changes descriptions
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versions = TagDescriptionVersion.where(language_code: 'ja',
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tag_id: descriptions.select(:tag_id))
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.order(id: :desc).limit(200).to_a
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return [] if versions.empty?
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by_tag = descriptions.where(tag_id: versions.map(&:tag_id))
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.includes(tag: :tag_names).index_by(&:tag_id)
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users = User.where(id: versions.map(&:created_by_user_id)).index_by(&:id)
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predecessors = TagDescriptionVersion.where(
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language_code: 'ja', tag_id: by_tag.keys,
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version_no: versions.map { |version| version.version_no - 1 })
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.pluck(:tag_id, :version_no, :id)
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.to_h { |tag_id, version_no, id| [[tag_id, version_no], id] }
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versions.map do |version|
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description = by_tag.fetch(version.tag_id)
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user = users[version.created_by_user_id]
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{ revision_id: version.id,
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pred: predecessors[[version.tag_id, version.version_no - 1]],
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succ: nil,
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wiki_page: { id: description.id, title: description.tag.name('ja'),
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deprecated_at: description.tag.deprecated_at },
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user: user && { id: user.id, name: user.name },
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kind: 'content',
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message: nil,
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timestamp: version.created_at }
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end
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end
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def find_revision page
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if params[:version].present?
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page.wiki_revisions.find_by(id: params[:version])
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else
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page.current_revision
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end
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end
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def render_wiki_conflict err
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render json: { error: 'conflict', message: err.message }, status: :conflict
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end
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end
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