form-submit | 易学教程

jsf: integer property binded to a inputtext in UI is set to zero on submit [duplicate]

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问题 This question already has an answer here : h:inputText which is bound to Integer property is submitting value 0 instead of null (1 answer) Closed 4 years ago . I have integer properties from my bean binded to inputtext UI elements in jsp pages. initially when they are rendered, default value of this integer properties is null. Now when i am submitting the form without changing this inputtext fields, this fields are set to integer value zero in bean, even though ui text field is blank. As i

Prevent form from being submitted twice

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问题 I have a simple php form, like this: <?php if(isset($_POST['myform'])) // email... else // display form the problem is that if I refresh the page after I submit the form, it gets submitted twice. How can I prevent this from happening? 回答1: You should perform a REDIRECT to a page with a message that the data was inserted... and a back button to go to the form again (if you want to)... To redirect using PHP use the header function: header('Location: http://www.example.com/'); 回答2: Perform a

Ruby on Rails: How to have multiple submit buttons going to different methods (maybe with with_action?) [duplicate]

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问题 This question already has an answer here: How do I create multiple submit buttons for the same form in Rails? 7 answers So.. <%= submit_tag 'Save', :name => 'save' %> <%= submit_tag 'Save to Library', :name => 'library' %> then in my controller: with_action do |a| a.save do end a.library do end end the problem is that only one of the actions is getting invoked... the same one for both submit_tags... any idea why? or how I can get two buttons to submit a form to two different methods? 回答1: The

Model is null when form submitted

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问题 When I hit submit, the file parameter is null. public ActionResult Create() { return View(new FileViewModel()); } [HttpPost] [InitializeBlobHelper] public ActionResult Create(FileViewModel file) { if (ModelState.IsValid) { //upload file } else return View(file); } public class FileViewModel { internal const string UploadingUserNameKey = "UserName"; internal const string FileNameKey = "FileName"; internal const string Folder = "files"; private readonly Guid guid = Guid.NewGuid(); public string

Radio Buttons with PHP Form Handling

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问题 I have a basic form that I am submitting using some basic PHP. I have the form submission working great, except that I have a radio button (for preferred method of contact) and I am not sure how to add that in the PHP so that sends in the email. Both radio button options have the same name, so that isn't working as the value. My code is below. The PHP is as follows: <?php $name = stripslashes($_POST['name']); $email = stripslashes($_POST['email']); $phone = stripslashes($_POST['phone']);

jQuery: form not submitting with $(“#id”).submit(), but will submit with a 'submit' button?

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问题 <form method="post" action="load_statements.php?action=load" id="loadForm" enctype="multipart/form-data"> that is my form, which looks fine to me. in that form, i put this button: <input type="button" name="submit" id="submit" value="Submit" onclick="confirmSubmit()" class="smallGreenButton" /> here is the function it calls: function confirmSubmit() { // get the number of statements that are matched $.post( "load_statements.php?action=checkForReplace", { statementType : $("#statementType")

Is there an easy way to turn empty form inputs into null strings in Spring MVC?

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问题 I'm using Spring MVC and SimpleJdbcInsert to insert objects into a MySQL database. I'd like to set the blank input to NULL in the database rather than '' . I have quite a few fields, and I'm hoping for a way to do this without manually checking every value. Thanks! UPDATE So I'm an idiot. Several errors combined on my part led me to believe the correct answers below were not correct. I'd written a PropertyEditorSupport like this: class StringEditor extends PropertyEditorSupport { public void

How to disable submit button once it has been clicked?

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问题 I have a submit button at the end of the form. I have added the following condition to the submit button: onClick="this.disabled=true; this.value='Sending…'; this.form.submit();" But when it moves to the next page, the parameters did not pass and null values are passed. 回答1: Probably you're submitting the form twice. Remove the this.form.submit() or add return false at the end. you should end up with onClick="this.disabled=true; this.value='Sending…';" 回答2: You should first submit your form

differences between ng-submit and ng-click

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问题 In angularjs I'm wondering what the differences are between ng-submit and ng-click? Specifically, pros and cons of each and when should you one or the other? Thanks! **EDIT** I've looked in to this a bit more but I'm still wondering what (if any) the benefit is of using ng-submit? Could you use an ng-click in place of all ng-submits? Would this cause any problems? Thanks again! 回答1: The ngSubmit directive binds to the submit event in the browser, which is fired when a form is submitted. From

Simple ajax form using javascript no jQuery

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I'm working with a form for which the mark-up I can't change & can't use jQuery. Currently the form post the results to a new window. Is it possible to change this to an ajax form so that the results displays on submit instead without altering any mark-up? Pulling the results (mark-up) from the results page back to the form page. Here is the mark-up for the form. <form class="form-poll" id="poll-1225962377536" action="/cs/Satellite" target="_blank"> <div class="form-item"> <fieldset class="form-radio-group"> <legend><span class="legend-text">What mobile phone is the best?</span></legend> <div