如何分页Rabl的收藏
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26-10-2019 - |
题
我有这个模板:
# app/views/posts/index.rabl
collection @posts => :posts
attributes :id, :title, :subject
child(:user) { attributes :full_name }
node(:read) { |post| post.read_by?(@user) }
巫婆回报:
{
"posts": [
{
"post": {
"id": 5,
"title": "...",
"subject": "...",
"user": {
"full_name": "..."
},
"read": true
}
}
]
}
我想添加以添加一些分页参数,以使其呈现:
{
"posts": [
{
"post": {
"id": 5,
"title": "...",
"subject": "...",
"user": {
"full_name": "..."
},
"read": true
}
}
],
"total": 42,
"total_pages": 12
}
有任何想法吗?非常感谢!
解决方案
对不起,我的菜鸟问题,被录像机回答了Whitch。这是分页的例子:
object false
node(:total) {|m| @posts.total_count }
node(:total_pages) {|m| @posts.num_pages }
child(@posts) do
extends "api/v1/posts/show"
end
注意:我正在使用 Kaminari
分页。
其他提示
搜索时 kaminari
和 rabl
这是第一个也是唯一相关的结果。因此,我想根据 HAL规范 生成链接 这个.
因此,首先,从视图开始:
# api/v1/posts/index.rabl
object false
child(@posts) do
extends 'api/v1/posts/show'
end
node(:_links) do
paginate @posts
end
然后继续定义分页方法:
# app/helpers/api_helper
module ApiHelper
def paginate(collection)
current_page_num = collection.current_page
last_page_num = collection.total_pages
{
:first => first_page,
:previous => previous_page(current_page_num),
:self => current_page(current_page_num),
:next => next_page(current_page_num, last_page_num),
:last => last_page(last_page_num)
}
end
def first_page
{ :href => url_for(:page => 1) }
end
def previous_page(current_page_num)
return nil if current_page_num <= 1
{ :href => url_for(:page => current_page_num-1) }
end
def current_page(current_page_num)
{ :href => url_for(:page => current_page_num) }
end
def next_page(current_page_num, last_page_num)
return nil if current_page_num >= last_page_num
{ :href => url_for(:page => current_page_num+1) }
end
def last_page(last_page_num)
{ :href => url_for(:page => last_page_num) }
end
end
最后,在必要的控制器中包括助手。助手可以包括在 Api::BaseController
, ,所有API控制器都从中继承:
helper :api
没有Zag Zag的解决方案,我无法做到这一点,所以..非常感谢!
注意,对于will_paginate 3.0.0,以下工作:
node(:total) {|m| @posts.total_entries }
node(:total_pages) {|m| (@posts.total_entries.to_f / @posts.per_page).ceil }
node(:page_num){|m| @posts.current_page}
这可能就是您要寻找的;)
object false
node :comments do
partial('posts/index', object: @posts)
end
node(:pagination) do
{
total:@posts.count,
total_pages: 20
}
end
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