fix n plus one issue and remove some useless code.#503

lanzhiheng wants to merge 1 commit intorefinery:masterrefinery/refinerycms-blog:masterfrom

lanzhiheng:fix-n-plus-one-issue-and-remove-some-useless-codelanzhiheng/refinerycms-blog:fix-n-plus-one-issue-and-remove-some-useless-codeCopy head branch name to clipboard