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django display message after POST form submit

由 浪尽此生 提交于 2019-12-03 07:08:19
问题 I have a page with a POST form, that have a action set to some url. i.e assume this page url is /form_url/ : .. The view in /submit_url/ take care of the form data. After this, I want to return the same page of the form with a success message. In the view that take care for the POST form, I use HttpResponseRedirect , in order to "clear" the form data from the browser. But in this way I can't display a message in the form page, unless I do something like: return HttpResponseRedirect("/form_url

Is multiple-producer, single-consumer possible in a lockfree setting?

由 泪湿孤枕 提交于 2019-12-03 06:13:42
问题 I have a bunch of threads that are doing lots of communication with each other. I would prefer this be lock free. For each thread, I want to have a mailbox, where other threads can send it messages, (but only the owner can remove messages). This is a multiple-producer single-consumer situation. is it possible for me to do this in a lockfree / high performance matter? (This is in the inner loop of a gigantic simulation.) 回答1: Sure, if you have an atomic CompareAndSwap instruction: for (i = 0;

How to send an email through iOS simulator?

由 二次信任 提交于 2019-12-03 04:46:27
问题 I want to know if it's possible to send email through iPhone simulator. I have seen the tutorial for sending an email through iphone as below: http://www.edumobile.org/iphone/iphone-programming-tutorials/compose-mail-application-in-iphone/ Now to test it is it necessary to have real device? What is the way if I want to send email through iPhone simulator? 回答1: You have to rely on the iOS that the MFMailComposeResult that is handed back in mailComposeController:didFinishWithResult:error: is

Android message notification dialog on top of other activities

由 最后都变了- 提交于 2019-12-03 04:07:01
How do I get an Android message notification dialog on top of other activities? I am searching for a solution to this problem and still not yet got the solution. Right now, I am developing a social networking app in which I need to show a notification message dialog whenever the user gets some message from another and to achieve that I have used the broadcast receiver and it is working fine. The problem is how to show the notification dialog on top of another application. Ramesh Akula Yes, it is possible. The Main.xml layout has one edit text and button. The Messagebox layout has one button.

CakePHP customize flash message

由 谁说胖子不能爱 提交于 2019-12-03 03:46:47
Normally, the $this->Session->setFlash(__('My message.')); Will output: <div id="flashMessage" class="message"> My message. </div> How can I change that, so it'll output: <p class="notification> My message. </p> instead? If you look at the source code you will see that the second parameter of the SessionComponent method is the name of an element: function setFlash($message, $element = 'default', $params = array(), $key = 'flash') You can create a file in views/elements (or Views/Elements for Cake2) called for instance 'flash_notification.ctp' with the following content: <p class="notification"

Send MIDI messages over USB on Android

由 人盡茶涼 提交于 2019-12-03 03:25:15
I would like to make an app on android which sends MIDI messages over USB to a computer to be able to control music softwares such as Cubase, FL, Reason, ect... Hardware MIDI controllers (e.g Keyboards) are automatically recognized in music software on Windows. I guess it's because they use the universal MIDI protocol which is directly recognized by the music software. They don't need their own driver. I'd like to be able to use my phone/tablet as a midi controller without having to install staff on the computer (like with hardware controllers). There's a Demo Code on Android Developers to

Implementing a message/subscription mechanism in C#

由 ぃ、小莉子 提交于 2019-12-03 03:21:14
I'm prototyping a WPF application with the MVVM pattern. Following an answer to this question I have set up a ModelProviderService which exposes models as properties. The consumers of the service are the viewmodels, i.e. they pull their models from the service instead of instantiating them theirselves. class ModelProviderService { private LoginModel loginModel; public LoginModel LoginModel { get { return loginModel; } set { loginModel = value; } } private ProjectsModel projectsModel; public ProjectsModel ProjectsModel { get { return projectsModel; } set { projectsModel = value; } } public

How to use the default git commit message after resolving merge conflicts?

由 佐手、 提交于 2019-12-03 02:55:46
问题 After doing a merge and resolving conflicts, is there an "easy" way to just accept the default generated commit message from the command line? One of our developers will resolve all the conflicts, and then do a git commit -m"Merge Commit" which replaces the generated commit message that listed all the conflict files. I would like to have a different flag that would just take the current file without modification. I know there is a -F or --file= option, but that requires knowing the file name

Django. Error message for login form

由 安稳与你 提交于 2019-12-03 01:25:26
问题 I make login/password form: model: class LoginForm(forms.Form): username = forms.CharField(max_length=100) password = forms.CharField(widget=forms.PasswordInput(render_value=False),max_length=100) view: def login_view(request): if request.method == 'POST': username = request.POST['email'] password = request.POST['password'] user = authenticate(username=username, password=password) if user is not None and user.is_active: login(request, user) return HttpResponseRedirect("/n1.html")# Redirect to

Vue模版编译

由 匿名 (未验证) 提交于 2019-12-03 00:11:01
一 模版文件 <div> <header> <h1> I'm a template! </h1> </header> <p v-if = "message" > {{ message }} </p> <p v-else > No message. </p> </div> 二 渲染函数（render） function anonymous () { with ( this ) { return _c ( "div" , [ // header部分 _m ( 0 ), // if-else部分 message ? _c ( "p" , [ _v ( _s ( message ))]) : _c ( "p" , [ _v ( "No message." )]) ]); } } 三 静态渲染函数（staticRenderFns） _m ( 0 ): function anonymous () { with ( this ) { return _c ( "header" , [ _c ( "h1" , [ _v ( "I'm a template!" ) ]) ]); } } 来源：博客园 作者： 沙滩海风 链接：https://www.cnblogs.com/sea-breeze/p/11563834.html
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