使用will_paginate gem获取记录在rails中的当前页面

Question

I need to get the number of records at current page. I am using will_paginate gem for pagination. When trying to get the collection.count I am getting total number of records?

@collection = User.paginate(page: params[:page], per_page: 10).all

when I try to get the count of collection it returns the total entries. How to get the records count of a current table

Answer 1

尝试：

@collection.total_entries

Answer 2

If u need total entries in entire query:

@collection.total_entries

If u need entry count in current page:

@collection.size

Meanwhile u dont need to call last .all scope in pagination. Just try:

@collection = User.paginate(page: params[:page], per_page: 10)

Answer 3

If you want the current number of items on current page the you should do @collection.size . If you want the total number of items the you should do @collection.count

You can try setting the page to last page to see the difference.

Also use

@collection = User.paginate(page: params[:page], per_page: 10)

as the paginate will return only the corresponding set, configured with page and per_page params.

Answer 4

I also wanted to find the number of records for the current page. But @surveys.size is not returning the number of records in the current page, instead, it's returning the number of records if the current page had been filled.

@collection.length 

is the one that provides the needed result.

Answer 5

@collection.entries

is giving you the entries on the current page. If you for example paginate 25 entries, it will show the 25 entries in an Array class