印象派宝石 - 按意见排序帖子

Question

我使用以下gem，现在我试图根据视图数量对帖子进行排序。

我按照说明书，在我的岗位模型，所以我有：

is_impressionable :counter_cache => true 

而在我的控制，我有：

@mostpopular = @posts.order('counter_cache DESC').limit(6) 

但我发现了一个错误：

SQLite3::SQLException: no such column: counter_cache: SELECT "posts".* FROM "posts" ORDER BY counter_cache DESC LIMIT 6

Answer 1

您是否已将字段添加到模型中？

is_impressionable :counter_cache => true 

This will automatically increment the impressions_count column in the included model. Note: You'll need to add that column to your model.

要添加，你可以这样做：

t.integer :my_column_name, :default => 0 

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