Add batch delete feature.

app/controllers/admin/announcements_controller.rb

@@ -426,7 +426,11 @@ class Admin::AnnouncementsController < OrbitAdminController
         Bulletin.notify_feed_delete(params[:ids])
       end
     end
-    redirect_to admin_announcements_path
+    if request.xhr?
+      render :nothing => true, :status => 204
+    else
+      redirect_to admin_announcements_path
+    end
   end
 
   def preview

app/views/admin/announcements/_index.html.erb

@@ -1,10 +1,96 @@
 <script>
   if(document.querySelectorAll("#orbit-bar").length==0) location.reload();
+  if( Array.prototype.delete == undefined ){
+    Array.prototype.delete = function(v){
+      var idx = this.indexOf(v);
+      if(idx != -1){
+        return this.splice(idx, 1)[0];
+      }else{
+        return null;
+      }
+    }
+  }
+  function reload_tbody(url){
+    console.log("done");
+    if(url == undefined){
+      url = window.location.href;
+    }
+    $.get(url).done(function(data){
+      $('#index_table tbody').replaceWith($(data).find('tbody'));
+      if(window.scroll_top){
+          $(window).scrollTop(window.scroll_top);
+      }
+      window.archive_delete_ids = [];
+      $(".delete_archives_btn").addClass('hide');
+    });
+  }
+  $(document).on("click", ".select_delete", function(){
+    var that = $(this);
+    var id = that.data("id");
+    if(window.archive_delete_ids == undefined){
+      window.archive_delete_ids = [];
+    }
+    if(that.prop("checked")){
+      window.archive_delete_ids.push(id);
+    }else{
+      window.archive_delete_ids.delete(id);
+    }
+    if(window.archive_delete_ids.length == 0){
+      $(".delete_archives_btn").addClass('hide');
+    }else{
+      $(".delete_archives_btn").removeClass('hide');
+    }
+  })
+  function delete_archives(){
+    if(!window.archive_delete_ids || window.archive_delete_ids.length == 0){
+      return null;
+    }
+    var data = new FormData();
+    var csrf_token = document
+      .querySelector("meta[name='csrf-token']")
+      .getAttribute("content");
+    var csrf_param = document
+      .querySelector("meta[name='csrf-param']")
+      .getAttribute("content");
+    if (csrf_token && csrf_param) {
+      data.append(csrf_param, csrf_token);
+    }
+    window.archive_delete_ids.forEach(function(val){
+      data.append('ids[]', val);
+    });
+    $.ajax({
+      url: "<%=admin_announcements_delete_path%>",
+      method: 'DELETE',
+      data: data,
+      headers: {
+        // 'Content-Type': 'multipart/form-data',
+        // 使用 multipart/form-data 在此不需要設定 Content-Type。
+        'X-Requested-With': 'XMLHttpRequest',
+        'Authorization': `Bearer ${ csrf_token }`,
+      },
+      contentType: false, //required
+      processData: false, // required
+      statusCode: {
+        204: reload_tbody,
+        403: function() {
+          alert( "Delete failed!" );
+        }
+      }
+    })
+  }
+  $(document).on("click", ".delete_archives_btn", function(){
+    if(window.confirm("<%=t(:sure?)%>")){
+      if(window.confirm("<%=t(:sure?)%>")){
+        delete_archives();
+      }
+    }
+  })
 </script>
 
 <table class="table main-list">
   <thead>
     <tr class="sort-header">
+      <th style="width: 1em;"></th>
       <% @table_fields.each do |f| %>
       <%= thead(f) %>
       <% end %>
@@ -13,6 +99,8 @@
   <tbody>
     <% @bulletins.each do |b| %>
       <tr>
+        <% is_editable = can_edit_or_delete?(b) %>
+        <td><% if is_editable %><input type="checkbox" class="select_delete" data-id="<%= b.uid %>"><% end %></td>
         <td>
           <%= b.status_for_table %>
         </td>
@@ -50,7 +138,7 @@
           <div class="quick-edit">
             <ul class="nav nav-pills">
               <li><a href="#" class="detail-row" onclick="$('#<%= "#{b.id.to_s}-detail" %>').slideToggle(300); return false;"><%= t(:detail) %></a></li>
-              <% if can_edit_or_delete?(b) %>
+              <% if is_editable %>
                 <li><a href="/admin/announcements/<%=b.id.to_s%>/edit"><%= t(:edit) %></a></li>
                 <li><a href="#" class="delete text-error" rel="/admin/announcements/<%=b.id.to_s%>"><%= t(:delete_) %></a></li>
               <% end %>
@@ -99,6 +187,7 @@
 <%=
   content_tag :div, class: "bottomnav clearfix" do
     content_tag(:div, paginate(@bulletins), class: "pagination pagination-centered") +
+    content_tag(:div, link_to(t("archive.delete_selected"), "javascript:void(0)", :class=>"btn btn-primary"), class: "pull-right hide delete_archives_btn") +
     content_tag(:div, link_to(t(:new_),new_admin_announcement_path, :class=>"btn btn-primary"), class: "pull-right")
   end
 %>

config/routes.rb

@@ -32,6 +32,7 @@ Rails.application.routes.draw do
       patch 'announcement/updatesettings', to: 'announcements#updatesettings'
       post 'announcement/import_from_wp', to: 'announcements#import_from_wp'
       post 'announcement/generate_iframe_url' => 'announcements#generate_iframe_url'
+      delete 'announcement/delete', to: 'announcements#delete'
       resources :announcements
       get 'announcements/:id/comment'=> 'announcements#comment'
       get 'annc-comment-hidden/:id' => 'announcements#comment_hidden'