当我尝试获取所有类别(索引操作)时出现错误:

undefined local variable or method `json'

但是在表演中一切​​都很好。所有文件都有 .jbuilder 扩展名。 这是 Controller 代码:

def index
  @categories = Category.all
end

# GET /categories/1
# GET /categories/1.json
def show
  @category = Category.find(params[:id])
end

堆栈跟踪:

app/views/categories/index.json.builder:1:in_app_views_categories_index_json_builder___502133872307116590_70140532925300' actionpack (3.2.11) lib/action_view/template.rb:145:inblock in render'
activesupport (3.2.11) lib/active_support/notifications.rb:125:in instrument'<br/> actionpack (3.2.11) lib/action_view/template.rb:143:inrender'

最佳答案

尝试将您的文件 index.json.builder 重命名为 index.json.jbuilder

https://stackoverflow.com/questions/14512720/