指定分类下的视频分页 ​

	async list() {
        let { ctx, app } = this;
        ctx.validate({
            category_id: {
                type: "int",
                required: true,
                desc: "分类ID"
            },
            page: {
                type: "int",
                required: true,
                desc: "分页"
            }
        });

        let { category_id } = ctx.params;

        let rows = await ctx.page(app.model.Video, {
            category_id
        });
        ctx.apiSuccess(rows);
    }

router.get("/category/:category_id/video/:page", controller.video.list);