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Jquery 在Rails中调用Ajax后分页不起作用

jquery ruby-on-rails ajax

Jquery 在Rails中调用Ajax后分页不起作用,jquery,ruby-on-rails,ajax,kaminari,Jquery,Ruby On Rails,Ajax,Kaminari,我正在使用插件Kaminari进行分页。我正在修改我的应用程序，遇到了一个问题。我有一个带有分页数据的表单，还有一个用于过滤数据的表单（都是通过Ajax）。开始时，分页工作正常，特定页面的url为“/admin/rooms？page=X”。在ajax过滤完这些url对“/admin/rooms/filter？page=X”的更改之后。 我可以通过以下方式指定分页时要触发的操作： <%= paginate @rooms, :params => {:controller => 'r

我正在使用插件Kaminari进行分页。我正在修改我的应用程序，遇到了一个问题。我有一个带有分页数据的表单，还有一个用于过滤数据的表单（都是通过Ajax）。开始时，分页工作正常，特定页面的url为“/admin/rooms？page=X”。在ajax过滤完这些url对“/admin/rooms/filter？page=X”的更改之后。 我可以通过以下方式指定分页时要触发的操作：

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

{:controller=>'rooms'，:action=>'index'}，:remote=>true%>
但随后变量@rooms在索引中被重置，我再次分页未过滤的数据

有什么办法我可以修吗

这里有一些代码

  • 房间\u控制器.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

    <%= 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>

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

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

    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

    class Admin:：RoomsController[“CAST（Room_number作为VARCHAR）LIKE？”，“#{params[：filter_value]}%]）
当“人员计数”时
@rooms=Room.find（：all，：conditions=>[“person\u count LIKE？”，“{params[：filter\u value]}%]”）
其他的
@rooms=Room.join（：Room_class）.where（“较低的（class_name）像'#{params[：filter_value]}%'））
结束
@rooms=Kaminari.paginate_数组（@rooms）.page（参数[：page]）.per（5）
回应待办事项|格式|
format.html{重定向到管理员房间路径}
format.js
结束
结束
  • index.html.erb：

    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

    <%= 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>

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

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

    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

    
正确）do%>
'筛选..'%>
...
  • \u rooms\u list.html.erb：

    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

    <%= 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>

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

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

    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

    
正确%>
...
通过再次将参数传递到索引并强制paginate路由到“rooms#index”，而不是当前页面，问题得到了解决（但Ajax的原因不可见）

  • \u rooms\u list.html.erb：

    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

    <%= 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>

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

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

    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
测试过滤器当然要删除/重命名。我没有一些我认为不应该在paginate时在params中传递到下一页的参数。

这确实是一个猜测（因此，现在不是答案），但看看您的代码，我假设您必须通过Kaminari的
params
属性为
#paginate
视图方法传递过滤器变量。类似于
{:filter\u by=>params[：filter\u by]，…}，：remote=>true%>
。您可能想使用一个helper方法，该方法检查参数是否已实际设置等。我怀疑是否已将参数传递给index方法（第一次尝试时不知何故我失败了），但在您的帖子之后，我再次尝试了该方法，并且。。。它有效。：）