检查元搜索列
关于 MetaSearch，我想从搜索参数中提取“人类”名称。例如，当 params[:search] 具有以下非空值时：
- title_contains
- author_name_contains
我想提取：
- title
- author name
最终用途是向用户提供额外的反馈，例如：
Results filtered on title and author name
我想使用其中的函数MetaSearch 库来实现这一点，而不是重新开发参数解析。虽然上述示例在 Ruby 中很简单，但 MetaSearch 参数语言可以富有表现力。
谢谢
Regarding MetaSearch, I would like to extract "human" names from the search parameters. For example, when the params[:search] has non-blank values for the following:
- title_contains
- author_name_contains
I would like to extract:
- title
- author name
The end use would be to provide additional feedback to the user such as:
Results filtered on title and author name
I would like to use functions within the MetaSearch library to achieve this instead of re-developing the param parsing. While the above examples are simple in Ruby the MetaSearch parameter language can be expressive.
Thanks
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如果您确实想从 MetaSearch 对象中获取这些内容，您可以执行以下操作：
不过，我不太确定您是否比直接从参数中获取这些内容获得了任何好处。在任何实际使用中，您可能希望根据谓词更改显示的文本。
您可能想使用 i18n 来解决这个问题：
http:// rdoc.info/github/ernie/meta_search/master/file/README.rdoc#Localization
If you really want to get these from the MetaSearch object, you can do something like:
I'm not really sure that you're gaining anything over pulling this from the params directly, though. In any real-world usage, you'd probably want to change the text you display based on the predicate.
You may want to tackle this using i18n, instead:
http://rdoc.info/github/ernie/meta_search/master/file/README.rdoc#Localization