[英]Rails will_paginate persistence
有没有办法使结果在will_paginate
页面上持久存在? 我使用bootstrap-datepicker-rails
列出了给定范围内的报告,该报告发布了范围内的结果,但是当我单击第2页链接时,它恢复为第2页上没有范围的结果。
这是我所拥有的:
views / reports / index.html.erb
<%= render partial: "pages/navigation" %> <div class="row reports"> <div class="col-md-2 sidebar no-float"> <h3 class="text-center">Select Date Range</h3> <div class="input-daterange input-group" id="datepicker"> <%= form_tag reports_index_path, method: :post, :class => "form-inline" do %> <div class="form-group"> <%= label_tag "Start Date:" %> <%= text_field_tag(:start_date, @reports.blank? ? '' : params[:start_date], class: "form-control", name: "start_date", data: {"behaviour" => "datepicker"}) %> <p class="text-center">to</p> <%= label_tag "End Date:" %> <%= text_field_tag(:end_date, @reports.blank? ? '' : params[:end_date], class: "form-control", name: "end_date", data: {"behaviour" => "datepicker"}) %> </div> <br/> <br/> <%= submit_tag "Update", class: "update-button" %> <% end %> </div> </div> <div class="col-md-10 report-list no-float"> <h2 class="text-center">Reports Archive</h2> <% @reports.in_groups_of(3).each do |group| %> <ul id="report-list list"> <% group.each do |report| %> <div class="col-md-4"> <li class="report"> <div class="report-header"> <p> <span class="report-data"><%= report.name %></span> </p> </div> <p class="report-text"><%= report.range %></p> <p class="report-text"><%= link_to "Download", report.pdf.url, target: "_blank" %></p> </li> </div> <% end %> </ul> <% end %> </div> </div> <!-- </div> --> <div class="pagination-wrapper"> <%= will_paginate @reports, :previous_label => "Newer", :next_label => "Older", :params => { :start_date => params[:start_date], :end_date => params[:end_date] } %> </div> <%= render partial: "pages/footer" %>
controllers / reports_controller.rb
class ReportsController < ApplicationController def index @company = current_user.company @locations = if @company current_user.company_locations.order(:name) else [] end unless @company.nil? || @company.reports.empty? if request.post? @reports = @company.reports.where(created_at: report_params[:start_date]..report_params[:end_date]).order(created_at: :asc).paginate(page: params[:page], :per_page => 30) else if params[:start_date].present? && params[:end_date].present? @reports = @company.reports.where(created_at: (report_params[:start_date]..report_params[:end_date])).order(created_at: :desc).paginate(page: params[:page], :per_page => 30) else @reports = @company.reports.order(created_at: :desc).paginate(page: params[:page], :per_page => 30) end end end end private def report_params params.permit(:start_date, :end_date) end end
这是固定的,因此,默认情况下,如果请求不是post
,则我将加载所有可用报告,因为单击第2页不是post
,所以我认为这是问题所在。
这不是固定的,每当我定义范围后单击最后一页时,即使仍有记录要显示,它总是会返回错误。
这是加载时默认页面的外观(尚未指定范围):
这就是我在第1页上定义范围(5/1/15-7/1/15)时的样子
页面#2-10正常工作:
但是最后一页总是这样做,好像will_paginate由于某种原因要添加额外的页面:
您可以使用:params
选项将其他参数传递给will_paginate。
在您的特定情况下,您可以执行以下操作:
<div class="pagination-wrapper">
<%= will_paginate @reports, :previous_label => "Newest", :next_label => "Oldest", :params => { :start_date => @start_date, :end_date => @end_date } %>
</div>
并像这样修改控制器:
unless @company.nil? || @company.reports.empty?
if request.post?
@reports = @company.reports.where(created_at: report_params[:start_date]..report_params[:end_date]).order(created_at: :asc).paginate(page: params[:page], :per_page => 30)
@start_date, @end_date = @reports.last.created_at, @reports.first.created_at
else
if params[:start_date].present? && params[:end_date].present?
@reports = @company.reports.where(created_at: (params[:start_date]..params[:end_date])).order(created_at: :desc).paginate(page: params[:page], :per_page => 30)
@start_date, @end_date = params[:start_date], params[:end_date]
else
@reports = @company.reports.order(created_at: :desc).paginate(page: params[:page], :per_page => 30)
@start_date, @end_date = @reports.first.created_at, @reports.last.created_at
end
end
end
注意:不确定start_date
或end_date
哪个先于另一个,您可能要确保正确定义了范围,即(最早(..最新))。
为reports
迭代添加了修复程序:
<% group.each do |report| %>
<% unless report.nil? %>
<div class="col-md-4">
<li class="report">
<div class="report-header">
<p>
<span class="report-data"><%= report.name %></span>
</p>
</div>
<p class="report-text"><%= report.range %></p>
<p class="report-text"><%= link_to "Download", report.pdf.url, target: "_blank" %></p>
</li>
</div>
<% end %>
<% end %>
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