在 Rails 中，是否可以在不调用 redirect_to 或 render 的情况下显示警报? [英] In Rails, is it possible to display an alert without calling redirect_to or render?

查看：50 发布时间：2021/7/12 19:53:34 ruby-on-rails

本文介绍了在 Rails 中，是否可以在不调用 redirect_to 或 render 的情况下显示警报?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我有一个表格:

<%= form_tag generate_report_path(:header => true) do |f|% ><div class="container-fluid"><div style="padding-right:10px"><%= select_tag(:report_id, options_for_select([[选择报告类型", 0],[报告1"，1]，[报告2"，2]，["Report3", 3]]), id: "report_selection") %><%= hidden_field_tag :format, :pdf %>

我旁边有一个提交按钮和一个复选框:

<%= button_tag "生成报告", class: 'btn btn-sm btn-primary'%><%= label_tag do %><%= check_box_tag "format_reqd", "format_reqd", false %>检查数字格式<%结束%>

当用户选中复选框并点击生成报告按钮时，我想向用户显示您的报告将在几分钟内通过电子邮件发送给您"的提示；但不应刷新页面.

我怎样才能实现这两个:

禁用页面刷新?
显示快闪信息?

请帮忙！

更新:

我将此添加到我的控制器(称为 report_controller):

 def reportgenresponse_to do |格式|format.js { flash.now[:alert] = "报告生成已启动.您将在大约 4 - 5 分钟后收到一封电子邮件，其中包含下载报告的链接."}结尾结尾

\app\views\report\reportgen.js.erb

 $("#flash").html('<%= j render partial: "shared/notice_banner" %>');

application.html.erb

 
<% 如果 alert.present?％＞<%=渲染部分:shared/notice_banner"%><%结束%>
<% flash.each do |key, value|％＞<% if key.to_s == "alert" %><div style="color: #FF0000" class="text-center <%= flash_class(key) %>"><%=值%>

<%其他%><div class="lead text-center <%= flash_class(key) %>"><%=值%>

<%结束%><%结束%><%=产率%>

app\views\shared\_notice_banner.html.erb


<%=警报%><a href="#" class="close">&times;</a>

这是我在表单中添加按钮和复选框的代码:

 
&nbsp;<div id="report_type_drop" style="display: none;padding-top:5px;padding-left:5px"><%= label_tag do %><%= check_box_tag "format_reqd", "format_reqd", false %>检查数字格式<%结束%>

使用上面的代码，这些是我现在原始问题中 2 个问题的结果:

禁用页面刷新 - 现在可以正常工作
显示闪现信息 - 这不起作用！

更新:

我现在也看到了这个错误(不过不确定是什么原因造成的):

ActionController::UnknownFormat(ReportController#reportgen 缺少此请求格式和变体的模板.request.formats: ["application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"]request.variant: []):actionpack (5.0.7.1) lib/action_controller/metal/implicit_render.rb:43:in `default_render'actionpack (5.0.7.1) lib/action_controller/metal/basic_implicit_render.rb:4:in `block in send_action'actionpack (5.0.7.1) lib/action_controller/metal/basic_implicit_render.rb:4:in `tap'actionpack (5.0.7.1) lib/action_controller/metal/basic_implicit_render.rb:4:in `send_action'actionpack (5.0.7.1) lib/abstract_controller/base.rb:188:in `process_action'actionpack (5.0.7.1) lib/action_controller/metal/rendering.rb:30:in `process_action'actionpack (5.0.7.1) lib/abstract_controller/callbacks.rb:20:in `block in process_action'activesupport (5.0.7.1) lib/active_support/callbacks.rb:126:in `call'activesupport (5.0.7.1) lib/active_support/callbacks.rb:506:in `block (2 levels) in compile'activesupport (5.0.7.1) 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lib/active_support/notifications.rb:164:in `instrument'actionpack (5.0.7.1) lib/action_controller/metal/instrumentation.rb:30:in `process_action'actionpack (5.0.7.1) lib/action_controller/metal/params_wrapper.rb:248:in `process_action'activerecord (5.0.7.1) lib/active_record/railties/controller_runtime.rb:18:in `process_action'actionpack (5.0.7.1) lib/abstract_controller/base.rb:126:in `process'actionview (5.0.7.1) lib/action_view/rendering.rb:30:in `process'actionpack (5.0.7.1) lib/action_controller/metal.rb:190:in `dispatch'actionpack (5.0.7.1) lib/action_controller/metal.rb:262:in `dispatch'actionpack (5.0.7.1) lib/action_dispatch/routing/route_set.rb:50:in `dispatch'actionpack (5.0.7.1) lib/action_dispatch/routing/route_set.rb:32:in `serve'actionpack (5.0.7.1) lib/action_dispatch/journey/router.rb:39:in `block in serve'actionpack (5.0.7.1) lib/action_dispatch/journey/router.rb:26:in `each'actionpack (5.0.7.1) lib/action_dispatch/journey/router.rb:26:in `serve'actionpack (5.0.7.1) 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更新:(更新 3)

如果我将控制器代码更改为:

上面的堆栈跟踪错误消失了
页面没有刷新 - 这很好
但仍然没有出现 Flash 消息

 respond_to do |format|format.json { flash.now[:alert] = "报告生成已启动.您将在大约 4 - 5 分钟后收到一封电子邮件，其中包含下载报告的链接."}结尾

解决方案

您应该在表单中使用 remote: true.

<%= form_tag generate_report_path(:header => true), remote: true do |f|% ><div class="container-fluid"><div style="padding-right:10px"><%= select_tag(:report_id, options_for_select([[选择报告类型", 0],[报告1"，1]，[报告2"，2]，["Report3", 3]]), id: "report_selection")％＞<%= hidden_field_tag :format, :pdf %><%= button_tag生成报告"，类:'btn btn-sm btn-primary'%><%= label_tag do %><%= check_box_tag "format_reqd", "format_reqd", false %>检查数字格式<%结束%><%结束%>

<块引用>

Above remote: true 负责发送ajax请求到你的控制器方法.这是 form_for 和 remote 的完整指南请求.

在您的控制器方法中:

def generate_report... #无论你想在这里添加什么.render js: "alert('你的报告将在几分钟内通过电子邮件发送给你')"结尾

更新快讯:

您的控制器方法现在看起来像:

def generate_report... #无论你想在这里添加什么.response_to do |格式|format.js { flash[:notice] = "您的报告将在几分钟内通过电子邮件发送给您" }结尾结尾

渲染视图:

# app/views/users/generate_report.js.erb$("#flash").html('<%= j 渲染部分: "shared/notice_banner" %>');

<预><代码># app/views/layouts/application.html.erb<div id="闪存"><% if notice.present?％＞<%=渲染部分:shared/notice_banner"%><%结束%>

# app/views/shared/_notice_banner.html.erb<div data-alert class="alert-box"><%=通知%><a href="#" class="close">×</a>

在 Rails 中，是否可以在不调用 redirect_to 或 render 的情况下显示警报? [英] In Rails, is it possible to display an alert without calling redirect_to or render?

问题描述

更新:

更新:

更新:(更新 3)

UPDATE:

UPDATE:

UPDATE: (update 3)

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在 Rails 中，是否可以在不调用 redirect_to 或 render 的情况下显示警报? [英] In Rails, is it possible to display an alert without calling redirect_to or render?

问题描述

更新:

更新:

更新:(更新 3)

UPDATE:

UPDATE:

UPDATE: (update 3)

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其他开发最新文章

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