Question

通过一些帮助我现在已经将params传递给我的控制器中的方法，我现在坚持的是如何使用该方法并将其分配给我的实例变量。

class PublicController < ApplicationController

def rehome
  @animals = Animal.animals_rehome.paginate(:page => params[:page], :per_page => 6)
    respond_to do |format|
     format.html
     format.js
    end
 end

def rehomed
  respond_to do |format|
   format.js {render :json => Animal.where(animal_type: params[:animal_type]) }
 end
end

使用以下ajax帖子更新参数

$('select.btn').on('change', function() {
  var animal_type = $('#animalType option:selected').text();
  var animal_town = $('#animalTown option:selected').text();

  $.ajax({
   type: 'POST',
   url: '/public/rehomed',
    data: {
     animal_type: animal_type,
   },
    success: function(data) {
     console.log(data);
    }
    });
  });

我想要实现的是在初始页面加载时使用

def rehome
 @animals = Animal.animals_rehome.paginate(:page => params[:page], :per_page => 6)
end

但是当我通过我想要的选择下拉菜单选择我的过滤器时

 def rehome
  @animals = rehomed.paginate(:page => params[:page], :per_page => 6)
 end

但是我不知道怎么设置这个，如果有人能指出我在某些资源的方向来解决这个问题或者一个例子，那么我可以学习它我将非常感激

由于

修改

我的设置现在看起来像

class PublicController < ApplicationController
 before_filter :default_animal

def rehome
  respond_to do |format|
   format.html
   format.js
  end
end


def rehomed
 conditions = {}
 conditions.merge!(animal_type: params[:animal_type]) if params[:animal_type].present?
 conditions.merge!(rehomed: params[:rehomed]) if params[:rehomed].present?
 conditions.merge!(users: {town: params[:animal_town]}) if params[:animal_town].present?

 @animals = Animal.joins(:user).where(conditions)

  respond_to do |format|
   format.js { render json: @animals }
  end
end


private

def default_animal
  @animals = Animal.animals_rehome.paginate(:page => params[:page], :per_page => 6)
end

end

我的ajax请求发送正确的参数以在每次在视图中更新下拉列表时构建@animals查询，我想要实现的是将新查询的结果加载到页面上以与之对齐will_paginate结构，如果可能的话请

   $('select.btn').on('change', function() {
    var animal_type = $('#animalType option:selected').text();
    var animal_town = $('#animalTown option:selected').text();
    var data_send = { animal_type: animal_type, animal_town: animal_town, rehomed: false}


   if(animal_type == 'All') {
    data_send = {animal_town: animal_town, rehomed: false}
   }
  if(animal_town == 'All') {
   data_send = {animal_type: animal_type, rehomed: false}
  }

  $.ajax({
   type: 'POST',
   url: '/public/rehomed',
    data: data_send,
     success: function(data) {
      console.log(data);
     }
  });
 });

查看rehome.html.erb

 <div class="all_animals">
  <%= render @animals %> # this is in a partial called _animal.html.erb
 </div>

 <div id="infinite-scrolling">
   <%= will_paginate @animals %>
 </div>

rehome.js.erb

$('.all_animals').append('<%= j render @animals %>');
 <% if @animals.next_page %>
  $('.pagination').replaceWith('<%= j will_paginate @animals %>');
 <% else %>
  $(window).off('scroll');
  $('.pagination').remove();

Answer 1

你应该使用before_filter

class PublicController < ApplicationController
  before_filter :filter_method

    def rehome
        respond_to do |format|
         format.html
         format.js
        end
     end

    def rehomed
      respond_to do |format|
       format.js {render :json => @animals.where(animal_type: params[:animal_type]) }
     end

    private
    def filter_method
      @animals = Animal.animals_rehome.paginate(:page => params[:page], :per_page => 6)
    end
end

你需要params [：page]和params [：animal_type]来重新加入行动

更多关于before_filter

更新实例变量的查询

1 个答案: