def updateInfo(self, item, newlinks, oldlinks):
		'''爬虫爬完之后对数据库内容进行更新'''
		cur = self.conn.cursor()
		cur.execute("SELECT wid,did FROM Websites WHERE url=?", (item['url'],))
		wid, did = cur.fetchone()
		# website记录更新
		cur.execute("UPDATE Websites SET title=?,visited=1 WHERE wid=?", (item['title'], wid,))
		# 对应的domain记录中出度也需要更新
		cur.execute("UPDATE Domains SET outdegree=outdegree+? WHERE did=?", (len(item['links']), did,))

		# 对该网页中所有链接涉及的记录进行更新
		# 外部判断未出现过的链接
		for link,domain in newlinks:
			self.insertWebsite(link, domain)

		# 外部判断出现过的链接
		for link,domain in oldlinks:
			# 对对应的domain记录入度增加
			cur.execute("UPDATE Domains SET outdegree=outdegree+1 WHERE domain=?", (domain,))
		# 写入到文件
		self.conn.commit()
def edit_user(user_id):
    user = User.query.filter_by(id=user_id).first_or_404()

    if not Permission(CanEditUser, identity=current_user):
        flash(_("You are not allowed to edit this user."), "danger")
        return redirect(url_for("management.users"))

    member_group = db.and_(*[db.not_(getattr(Group, p)) for p in
                             ['admin', 'mod', 'super_mod', 'banned', 'guest']])

    filt = db.or_(
        Group.id.in_(g.id for g in current_user.groups), member_group
    )

    if Permission(IsAtleastSuperModerator, identity=current_user):
        filt = db.or_(filt, Group.mod)

    if Permission(IsAdmin, identity=current_user):
        filt = db.or_(filt, Group.admin, Group.super_mod)

    if Permission(CanBanUser, identity=current_user):
        filt = db.or_(filt, Group.banned)

    group_query = Group.query.filter(filt)

    form = EditUserForm(user)
    form.primary_group.query = group_query
    form.secondary_groups.query = group_query
    if form.validate_on_submit():
        form.populate_obj(user)
        user.primary_group_id = form.primary_group.data.id

        # Don't override the password
        if form.password.data:
            user.password = form.password.data

        user.save(groups=form.secondary_groups.data)

        flash(_("User updated."), "success")
        return redirect(url_for("management.edit_user", user_id=user.id))

    return render_template("management/user_form.html", form=form,
                           title=_("Edit User"))