我正在使用 ajax-datatables-rails .下面是我的数据表的 JS。我想将 javascript 转换为等效的 Opal.rb。
jQuery(document).ready(function() {
var table = $('#organizations-datatable');
var token = $('meta[name=csrf-token]').attr('content');
table.DataTable({
"processing": true,
"serverSide": true,
"ajax": {
"url": "/organizations/datatable.json",
"type": 'POST',
"beforeSend": function (xhr) {
xhr.setRequestHeader('X-CSRF-Token', token)
}
},
"pagingType": "full_numbers",
"destroy": true,
"columns": [
{"data": "name"},
{"data": "desc"},
{"data": "industry"},
{"data": "tags"}
],
"iDisplayLength": 25
});
});
它包括将 CSRF token 添加到 ajax 数据请求。
为了可读性等，我希望我们所有的 javascript 都写成蛋白石。请不要争论这个选择，我只关心如何通过 opal/rails-ujs/opal-jquery 让它作为 Opalrb 工作
下面的Opal没有实现和上面的JS一样。谁能帮我理解为什么？
Element.expose :DataTable
Document.ready? do
token = Element['meta[name=csrf-token]'].attr('content');
settings = {
"processing": true,
"serverSide": true,
"ajax": {
"url": "/organizations/datatable.json",
"type": 'POST',
"beforeSend": lambda do
xhr = `new window.XMLHttpRequest()`
xhr.setRequestHeader('X-CSRF-Token', token)
end
},
"pagingType": "full_numbers",
"destroy": true,
"columns": [
{"data": "name"},
{"data": "desc"},
{"data": "industry"},
{"data": "tags"}
]
}
Element['#organizations-datatable'].DataTable(settings.to_n)
end
我在这里错过了什么？为什么这种蛋白石不好？
编辑:这就是我的路线，这确保 POST 适用于此:
Rails.application.routes.draw do
concern :with_datatable do
post 'datatable', on: :collection
end
resources :organizations, concerns: [:with_datatable]
end
这是我使用 gem 的相关 Controller 和数据表代码:
class OrganizationsController < ApplicationController
def index
@title = "Organizations"
@page_description = "Organization data warehouse"
@page_icon = "institution"
@organization = Organization.new
@load = {data_table: true}
@menu = Menu.new
respond_to do |format|
format.html
format.json { render json: OrganizationDatatable.new(params) }
end
end
def datatable
logger.ap "datatable params: #{params}"
respond_to do |format|
format.json { render json: OrganizationDatatable.new(params) }
end
end
def get_raw_records
Organization.all
end
def create
end
def edit
end
def destroy
end
def show
end
def update
end
def new
end
end
这是数据表
class OrganizationDatatable < AjaxDatatablesRails::ActiveRecord
extend Forwardable
include ActionView::Helpers::TextHelper
def_delegator :@view, :link_to
def view_columns
# Declare strings in this format: ModelName.column_name
# or in aliased_join_table.column_name format
@view_columns ||= {
# id: { source: "Organization.id" },
name: { source: "Organization.name",cond: :like, searchable: true, orderable: true },
desc: { source: "Organization.description",cond: :like, searchable: true, orderable: true },
industry: { source: "Organization.industry",cond: :like, searchable: true, orderable: true },
tags: { source: "Organization.tag_list", searchable: false, orderable: false }
}
end
def data
records.map do |record|
{
id: record.id,
name: record.name,
desc: truncate(record.description,length: 240, separator: ' '),
industry: record.industry,
tags: record.decorate.buttonize_tags,
DT_RowId: record.id
}
end
end
def get_raw_records
Organization.all
end
end
最佳答案
我将从指出您代码中的一些错误开始，
beforeSend中的代码有问题请引用supplying-an-xhr-method ，改成下面的代码，
"beforeSend": lambda do |xhr|
`xhr.setRequestHeader('X-CSRF-Token', token)`
像上面的语句一样，用 (`) 反引号将 xhr 语句括起来
列应该有二维数组而不是对象数组，
“列”:[
[“数据”:“名称”]，
[“数据”:“描述”]，
[“数据”:“行业”]，
[“数据”:“标签”]
]
其余代码看起来不错。
下面是测试代码，
Element.expose :DataTable
Document.ready? do
token = Element['meta[name=csrf-token]'].attr('content');
settings = {
"ajax": {
"url": "/data.json",
"type": 'POST',
"beforeSend": lambda do |xhr|
`xhr.setRequestHeader('X-CSRF-Token', token)`
end
},
"pagingType": "full_numbers",
"destroy": true,
"columns": [
["data": "Name"],
["data": "Position"],
["data": "Office"],
["data": "Extn."],
["data": "Start"],
["data": "Salary"]
]
}
Element['#organizations-datatable'].DataTable(settings.to_n)
end
确保你的data.json文件在rails app的public文件夹中，内容如下，
{
"data": [
[
"Tiger Nixon",
"System Architect",
"Edinburgh",
"5421",
"2011/04/25",
"$320,800"
],
[
"Garrett Winters",
"Accountant",
"Tokyo",
"8422",
"2011/07/25",
"$170,750"
],
[
"Ashton Cox",
"Junior Technical Author",
"San Francisco",
"1562",
"2009/01/12",
"$86,000"
],
[
"Cedric Kelly",
"Senior Javascript Developer",
"Edinburgh",
"6224",
"2012/03/29",
"$433,060"
],
[
"Airi Satou",
"Accountant",
"Tokyo",
"5407",
"2008/11/28",
"$162,700"
],
[
"Brielle Williamson",
"Integration Specialist",
"New York",
"4804",
"2012/12/02",
"$372,000"
],
[
"Herrod Chandler",
"Sales Assistant",
"San Francisco",
"9608",
"2012/08/06",
"$137,500"
],
[
"Rhona Davidson",
"Integration Specialist",
"Tokyo",
"6200",
"2010/10/14",
"$327,900"
],
[
"Colleen Hurst",
"Javascript Developer",
"San Francisco",
"2360",
"2009/09/15",
"$205,500"
],
[
"Sonya Frost",
"Software Engineer",
"Edinburgh",
"1667",
"2008/12/13",
"$103,600"
],
[
"Jena Gaines",
"Office Manager",
"London",
"3814",
"2008/12/19",
"$90,560"
],
[
"Quinn Flynn",
"Support Lead",
"Edinburgh",
"9497",
"2013/03/03",
"$342,000"
],
[
"Charde Marshall",
"Regional Director",
"San Francisco",
"6741",
"2008/10/16",
"$470,600"
],
[
"Haley Kennedy",
"Senior Marketing Designer",
"London",
"3597",
"2012/12/18",
"$313,500"
],
[
"Tatyana Fitzpatrick",
"Regional Director",
"London",
"1965",
"2010/03/17",
"$385,750"
],
[
"Michael Silva",
"Marketing Designer",
"London",
"1581",
"2012/11/27",
"$198,500"
],
[
"Paul Byrd",
"Chief Financial Officer (CFO)",
"New York",
"3059",
"2010/06/09",
"$725,000"
],
[
"Gloria Little",
"Systems Administrator",
"New York",
"1721",
"2009/04/10",
"$237,500"
],
[
"Bradley Greer",
"Software Engineer",
"London",
"2558",
"2012/10/13",
"$132,000"
],
[
"Dai Rios",
"Personnel Lead",
"Edinburgh",
"2290",
"2012/09/26",
"$217,500"
],
[
"Jenette Caldwell",
"Development Lead",
"New York",
"1937",
"2011/09/03",
"$345,000"
],
[
"Yuri Berry",
"Chief Marketing Officer (CMO)",
"New York",
"6154",
"2009/06/25",
"$675,000"
],
[
"Caesar Vance",
"Pre-Sales Support",
"New York",
"8330",
"2011/12/12",
"$106,450"
],
[
"Doris Wilder",
"Sales Assistant",
"Sidney",
"3023",
"2010/09/20",
"$85,600"
],
[
"Angelica Ramos",
"Chief Executive Officer (CEO)",
"London",
"5797",
"2009/10/09",
"$1,200,000"
],
[
"Gavin Joyce",
"Developer",
"Edinburgh",
"8822",
"2010/12/22",
"$92,575"
],
[
"Jennifer Chang",
"Regional Director",
"Singapore",
"9239",
"2010/11/14",
"$357,650"
],
[
"Brenden Wagner",
"Software Engineer",
"San Francisco",
"1314",
"2011/06/07",
"$206,850"
],
[
"Fiona Green",
"Chief Operating Officer (COO)",
"San Francisco",
"2947",
"2010/03/11",
"$850,000"
],
[
"Shou Itou",
"Regional Marketing",
"Tokyo",
"8899",
"2011/08/14",
"$163,000"
],
[
"Michelle House",
"Integration Specialist",
"Sidney",
"2769",
"2011/06/02",
"$95,400"
],
[
"Suki Burks",
"Developer",
"London",
"6832",
"2009/10/22",
"$114,500"
],
[
"Prescott Bartlett",
"Technical Author",
"London",
"3606",
"2011/05/07",
"$145,000"
],
[
"Gavin Cortez",
"Team Leader",
"San Francisco",
"2860",
"2008/10/26",
"$235,500"
],
[
"Martena Mccray",
"Post-Sales support",
"Edinburgh",
"8240",
"2011/03/09",
"$324,050"
],
[
"Unity Butler",
"Marketing Designer",
"San Francisco",
"5384",
"2009/12/09",
"$85,675"
],
[
"Howard Hatfield",
"Office Manager",
"San Francisco",
"7031",
"2008/12/16",
"$164,500"
],
[
"Hope Fuentes",
"Secretary",
"San Francisco",
"6318",
"2010/02/12",
"$109,850"
],
[
"Vivian Harrell",
"Financial Controller",
"San Francisco",
"9422",
"2009/02/14",
"$452,500"
],
[
"Timothy Mooney",
"Office Manager",
"London",
"7580",
"2008/12/11",
"$136,200"
],
[
"Jackson Bradshaw",
"Director",
"New York",
"1042",
"2008/09/26",
"$645,750"
],
[
"Olivia Liang",
"Support Engineer",
"Singapore",
"2120",
"2011/02/03",
"$234,500"
],
[
"Bruno Nash",
"Software Engineer",
"London",
"6222",
"2011/05/03",
"$163,500"
],
[
"Sakura Yamamoto",
"Support Engineer",
"Tokyo",
"9383",
"2009/08/19",
"$139,575"
],
[
"Thor Walton",
"Developer",
"New York",
"8327",
"2013/08/11",
"$98,540"
],
[
"Finn Camacho",
"Support Engineer",
"San Francisco",
"2927",
"2009/07/07",
"$87,500"
],
[
"Serge Baldwin",
"Data Coordinator",
"Singapore",
"8352",
"2012/04/09",
"$138,575"
],
[
"Zenaida Frank",
"Software Engineer",
"New York",
"7439",
"2010/01/04",
"$125,250"
],
[
"Zorita Serrano",
"Software Engineer",
"San Francisco",
"4389",
"2012/06/01",
"$115,000"
],
[
"Jennifer Acosta",
"Junior Javascript Developer",
"Edinburgh",
"3431",
"2013/02/01",
"$75,650"
],
[
"Cara Stevens",
"Sales Assistant",
"New York",
"3990",
"2011/12/06",
"$145,600"
],
[
"Hermione Butler",
"Regional Director",
"London",
"1016",
"2011/03/21",
"$356,250"
],
[
"Lael Greer",
"Systems Administrator",
"London",
"6733",
"2009/02/27",
"$103,500"
],
[
"Jonas Alexander",
"Developer",
"San Francisco",
"8196",
"2010/07/14",
"$86,500"
],
[
"Shad Decker",
"Regional Director",
"Edinburgh",
"6373",
"2008/11/13",
"$183,000"
],
[
"Michael Bruce",
"Javascript Developer",
"Singapore",
"5384",
"2011/06/27",
"$183,000"
],
[
"Donna Snider",
"Customer Support",
"New York",
"4226",
"2011/01/25",
"$112,000"
]
]
}
添加蛋白石到Gemfile,
gem 'opal-rails'
gem 'opal-jquery'
application.js.rb内容，
require 'opal'
require 'jquery'
require 'opal-jquery'
require 'datatables.min'
require_tree '.'
添加datatables.min.js文件到app/assets/javascripts文件夹
html,
<table id="organizations-datatable" class="display" style="width:100%">
<thead>
<tr>
<th>Name</th>
<th>Position</th>
<th>Office</th>
<th>Extn.</th>
<th>Start date</th>
<th>Salary</th>
</tr>
</thead>
<tfoot>
<tr>
<th>Name</th>
<th>Position</th>
<th>Office</th>
<th>Extn.</th>
<th>Start date</th>
<th>Salary</th>
</tr>
</tfoot>
</table>
注意:- 如果你想让它与 POST 一起工作，你必须调整你的 config/routes.rb，
在 routes.rb 中为您的 json 文件添加以下条目，
对我来说，
post '/data.json', :to => redirect('/data.json')
对你来说，
post '/organizations/datatable.json', :to => redirect('/organizations/datatable.json')
完整代码在这里 https://gitlab.com/shoyebsheikh/opal-datatables
Ajax datatables rails gem 解决方案:
假设这是数据源，您可以将以下行添加到您的 route ，
post '/organizations/datatable.json', :to => redirect('/organizations/datatable.json')
你的 Controller 应该是这样的
class OrganizationsController < ApplicationController
def datatable
params["columns"] ||= { "0" => {"data" => "" } }
params["length"] ||= -1
respond_to do |format|
format.html
format.json { render json: OrganizationDatatable.new(params) }
end
end
end
你的数据表如下，
class OrganizationDatatable < AjaxDatatablesRails::ActiveRecord
def view_columns
# Declare strings in this format: ModelName.column_name
# or in aliased_join_table.column_name format
@view_columns ||= {
# id: { source: "Organization.id" },
name: { source: "Organization.name",cond: :like, searchable: true, orderable: true },
desc: { source: "Organization.description",cond: :like, searchable: true, orderable: true },
industry: { source: "Organization.industry",cond: :like, searchable: true, orderable: true },
tags: { source: "Organization.tag_list", searchable: false, orderable: false }
}
end
def data
records.map do |record|
{
# id: record.id,
name: record.name,
desc: truncate(record.description,length: 240, separator: ' '),
industry: record.industry,
tags: record.decorate.buttonize_tags,
DT_RowId: record.id
}
end
end
def get_raw_records
Organization.all
end
end
在您的 organizations.js.rb 中有蛋白石代码，
Document.ready? do
token = Element['meta[name=csrf-token]'].attr('content');
settings = {
"ajax": {
"url": Element['#organizations-datatable'].data('source'),
"type": 'POST',
"beforeSend": lambda do |xhr|
`xhr.setRequestHeader('X-CSRF-Token', token)`
end
},
"pagingType": "full_numbers",
"destroy": true,
"columns": [
{"data": "name"},
{"data": "desc"},
{"data": "industry"},
{"data": "tags"}
]
}
Element['#organizations-datatable'].dataTable(settings.to_n)
end
在 html 中，
<table id="organizations-datatable" data-source="<%= organizations_index_path(format: :json) %>">
<thead>
<tr>
<th>Name</th>
<th>Desc</th>
<th>Industry</th>
<th>tags</th>
</tr>
</thead>
<tbody>
</tbody>
</table>
organizations_index_path 可以是 organizations_path 或像 organization_index_path 或 organization_path 这样的单数形式，具体取决于您的 Controller 名称
请引用https://gitlab.com/shoyebsheikh/ajax-datatables-rails-with-opal了解更多信息。
注意:
关于javascript - 转换 Javascript 数据表以在 Rails 应用程序中使用 Opal，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/55693725/
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Rails2.3可以选择随时使用RouteSet#add_configuration_file添加更多路由。是否可以在Rails3项目中做同样的事情？ 最佳答案 在config/application.rb中:config.paths.config.routes在Rails3.2(也可能是Rails3.1)中，使用:config.paths["config/routes"] 关于ruby-on-rails-Rails3中的多个路由文件，我们在StackOverflow上找到一个类似的问题
给定这段代码defcreate@upgrades=User.update_all(["role=?","upgraded"],:id=>params[:upgrade])redirect_toadmin_upgrades_path,:notice=>"Successfullyupgradeduser."end我如何在该操作中实际验证它们是否已保存或未重定向到适当的页面和消息？ 最佳答案 在Rails3中，update_all不返回任何有意义的信息，除了已更新的记录数(这可能取决于您的DBMS是否返回该信息)。http://ar.ru