尽早停止 meta_search 执行 sql
在 docs 中说：
MyObject.search()
返回MetaSearch::Builder 的实例（类似于 ActiveRecord::Relation）。但就我而言，当我这样做时，我会得到一个对象集合，因为 sql 查询已发送到数据库。
我想要这样的事情：
search = MyObject.search() # no sql-query should be done here
count = search.count # count sql done
objects = search.all # select sql done - maybee with pagination
有人知道如何阻止 Meta_search 过早进行查询吗？
->好吧，我的 shell 中发生了一些神秘的事情：
search = MyObject.search() # queries the database
search = MyObject.search(); 0 # stores a MetaSearch-Object in search
控制台似乎在每个命令之后调用一个额外的方法
in the docs it's said:
MyObject.search()
returns an instance of MetaSearch::Builder (something like ActiveRecord::Relation). But in my case when I do this I get a collection of objects because the sql-query is send to the database.
I would like to have something like this:
search = MyObject.search() # no sql-query should be done here
count = search.count # count sql done
objects = search.all # select sql done - maybee with pagination
does anyone know how to stop Meta_search from doing the the query to early?
-> ok, something mysterious going on in my shell:
search = MyObject.search() # queries the database
search = MyObject.search(); 0 # stores a MetaSearch-Object in search
the console seems to call an extra method after each comand
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如果您在 irb 中进行测试，请注意返回的对象会被检查。对于元搜索构建器，这意味着关系会被检查。如果您查看一下relation.rb 中的ActiveRecord 的inspect 方法，您将看到它调用to_a，该方法执行查询并返回结果。
If you're testing in irb, be aware that returned objects are inspected. In the case of a MetaSearch builder, this means the relation gets inspected. If you have a look at ActiveRecord's inspect method, in relation.rb, you'll see that it calls to_a, which executes the query and returns the results.