https://grails.github.io/grails-doc/3.0.x/ref/Tags/actionSubmit.html
g:actionSubmit 标签中不能添加参数。 尝试这样:
<g:textArea name="review"/>
<input name="gameId" value="${game.id}" type="hidden" />
<input name="gameTitle" value="${game.gameTitle}" type="hidden" />
<g:actionSubmit action="addReview" value="Add Review" class="ui blue labeled submit icon button">
<i class="icon edit"></i> Add Review
</g:actionSubmit>
答案并不明显,但可以做到......
<input type="submit" value="Add Review" formaction="addReview?gameId=${game.id}" class="ui blue labeled submit icon button"/>