Question

我使用插件Kaminari进行分页。我正在Ajaxifing我的应用程序，我遇到了一个问题。我有一个带有分页数据的表单以及用于过滤数据的表单（都是通过Ajax）。开始分页时效果很好，特定页面的网址是'/ admin / rooms？page = X'。在ajax过滤了那些url对'/ admin / rooms / filter？page = X'的更改。我可以指定在分页时触发的操作：

<%= paginate @rooms, :params => {:controller => 'rooms', :action => 'index'}, :remote => true %>

但随后变量@rooms在索引中重置，我再次对未过滤的数据进行分页。

任何想法我该如何解决？

这是一些代码

rooms_controller.rb ：

class Admin::RoomsController < AdminController
def index
        @rooms = Room.all
        @rooms = Kaminari.paginate_array(@rooms).page(params[:page]).per(5)
        @filter_values = [['Room number', 'room_number'], ['Person count', 'person_count'], ['Room class', 'room_class']]
end

def filter
        case params[:filter_by]
        when 'room_number'
                @rooms = Room.find(:all, :conditions => ["CAST(room_number AS VARCHAR) LIKE ?", "#{params[:filter_value]}%"])
        when 'person_count'
                @rooms = Room.find(:all, :conditions => ["person_count LIKE ?", "#{params[:filter_value]}%"])
        else
                @rooms = Room.joins(:room_class).where("lower(class_name) LIKE '#{params[:filter_value]}%'")
        end

        @rooms = Kaminari.paginate_array(@rooms).page(params[:page]).per(5)
        respond_to do |format|
                format.html { redirect_to admin_rooms_path }
                format.js
        end
end

index.html.erb ：

<%= label_tag 'Filter:  ' %>
<%= form_tag(filter_admin_rooms_path, :remote => true) do %>
        <%= select_tag :filter_by, options_for_select(@filter_values) %>
        <%= text_field_tag :filter_value %>
        <%= submit_tag 'Filter', :disable_with => 'Filtering..' %>
<% end %>

...

<div id="rooms_list">
        <%= render 'admin/rooms/shared/rooms_list' %>
</div>

_rooms_list.html.erb ：

<div id="paginator">
        <%= paginate @rooms, :remote => true %>
</div>
<table class="table_listing" style="width: 60%">
        ...
</table>

Answer 1

通过再次将参数传递给索引并强制paginate路由到'rooms #index'而不是当前页面（不是Ajax的可见原因）来解决问题。

<强> _rooms_list.html.erb ：

<%= paginate @rooms, :params => {:controller => 'rooms', :action => 'index'}, :remote => true %>

参数通过GET从当前的params变量传递给索引。

<强> rooms_controller.rb ：

def index
        if params[:filter_value].nil?
                @rooms = Room.all
        else
                @rooms = test_filter(params[:filter_value])
        end

        @rooms = Kaminari.paginate_array(@rooms).page(params[:page]).per(5)
        @errors = flash[:errors] || []
        @filter_values = [['Room number', 'room_number'], ['Person count', 'person_count'], ['Room class', 'room_class']]
end

def filter
        case params[:filter_by]
        when 'room_number'
                @rooms = Room.find(:all, :conditions => ["CAST(room_number AS VARCHAR) LIKE ?", "#{params[:filter_value]}%"])
        when 'person_count'
                @rooms = Room.find(:all, :conditions => ["person_count LIKE ?", "#{params[:filter_value]}%"])
        else
                @rooms = Room.joins(:room_class).where("lower(class_name) LIKE '#{params[:filter_value]}%'")
        end

        @rooms = Kaminari.paginate_array(@rooms).page(params[:page]).per(5)
        params[:authenticity_token] = nil
        params[:commit] = nil

        respond_to do |format|
                format.html { redirect_to admin_rooms_path }
                format.js
        end
end

def test_filter(val)
        rooms = Room.find(:all, :conditions => ["CAST(room_number AS VARCHAR) LIKE ?", "#{val}%"])
        rooms
end

test_filter当然要删除/重命名。我认为在参与分页时，我认为不应该将参数传递给下一页的参数。

在Rails中调用Ajax之后，分页不起作用

1 个答案: