Everyone i am newbie to ASP, I wrote a code that should take the input from HTML form.
I have given one textbox that text box value is mandatory. If user doesn't give input to the field. the asp page should show the message that "The field cannot be left empty!"
I have written a code, but I am not getting the output. Can anyone help me?
My code snippet is
index.html
<form method="post" action="a1.asp">
Field 1<input type="text" name="field1">*
</br></br><input type="submit" name="send" value="submit">
<input type="reset" name="clear" value="clear">
</form>
a1.asp
<%
Function Mandatory(field1)
if field1 = "" then
response.write("Field one is mandatory!cannot be left empty")
else
response.write("Welcome to new html")
End if
End Function
%>
you must use Request.Form to get the value from "POST" action.
like:
field1 = request.form("field1")
if field1 = "" then
....
refer to this: http://www.w3schools.com/asp/coll_form.asp
by the way, asp is very very old. if you want to learn web develop languages, you can try ASP.NET or php.
Hard to tell without more information. But you need to call the function somewhere, and reference the Request collection, like:
<% Mandatory(Request("field1")) %>
Related
Sorry if this question is a bit basic, but how can you parse form inputs in the Go Iris framework?
Here is the form I am using
<form action="/" method="post">
Username:<input type="text" name="username">
Password:<input type="password" name="password">
<input type="submit" value="Login">
</form>
here is the route and the controller respectively
iris.Post("/", TestController)
func TestController(c *iris.Context){
username := c.Form.Get("username")//Doesn't work
password := c.Form.Get("password")//Doesn't work
}
how do I retrieve the values in the Post request after the form has been submitted, Thanks
Based off an example on the iris github page you could try c.PostValue("Username"). The code you have may also work but I think you need to capitalize the variable names. In the html template you can see the name value is lowercased, however your context is more likely going off those the variable names to the left of the actual html like Username.
I'm building a form that generates an invitation when submitted. The invitation has several fields, one of which is an email address input with an 'add' button, which when clicked should add that address to a list of email addresses that should receive the invite.
This can be done with a single form, however if the user hits the enter key while typing an email then it triggers submit on the whole form. I'd like to have the enter key result - when the email input field is focused - have the same effect as clicking the 'add' button. I expected that the proper way to solve this would be to nest an email entry form within the invitation form, something like this:
<ng-form ng-submit="sendInvite()">
<input type="text" placeholder="Title" ng-model="invitation.title"/>
<ng-form ng-submit="addInvitee()">
<input type="email" placeholder="Title" ng-model="inviteeEmail"/>
<button class="btn" type="submit">add</button>
</ng-form>
<button class="btn" type="submit">Send</button>
</ng-form>
With the following javascript in the controller:
$scope.addInvitee = function() {
$scope.invitation.emails.push($scope.inviteeEmail);
$scope.inviteeEmail = '';
}
$scope.sendInvite = function() {
//code to send out the invitation
}
My problem is that having nested the forms (and in doing so converted from <form> to <ng-form>, submitting either one no longer works.
Plunker here
I've similar requirement - wizard driven multi-step form. When user clicks 'Next' button, I've to validate the current step form.
We can trigger validation by firing '$validate' event on the scope bound to the form.
isFormValid = function($scope, ngForm) {
$scope.$broadcast('$validate');
if(! ngForm.$invalid) {
return true;
}
}
When ever I want to check if the form values are correct, I'll call isFormValid with the scope & form instance.
Working code: Plunker link
It is also useful to have few additional logic in isFormValid (included in the above Plunker) which makes the form & form fields $dirty as we would be showing/hiding validation messages based on their $dirty state.
You can use one of the following two ways to specify what javascript method should be called when a form is submitted:
* ngSubmit directive on the form element
* ngClick directive on the first button or input field of type submit (input[type=submit])
-- form docs
<ng-form>
<input type="text" placeholder="Title" ng-model="invitation.title"><br>
<ng-form>
<input type="email" placeholder="Title" ng-model="inviteeEmail">
<button class="btn" ng-click="addInvitee()">add</button><br>
</ng-form>
<ul class="unstyled">
<li ng-repeat="invitee in invitation.invitees">
<span>{{invitee.email}}</span>
</li>
</ul>
<button class="btn" ng-click="sendInvite()">Send</button>
</ng-form>
Plunker
When the form is submitted, you can find all nested forms using some thing like below
forms = []
forms.push(form)
nestedForms = _.filter(_.values(form), (input) -> (input instanceof form.constructor) and (input not in forms))
Here, form is the outer form controller which was submitted. You can hook this code on ur onsubmit, and find all nested forms and do whatever you have to.
Note: This is coffeescript
okay so i have this page im making, the navigation panel is simple, when i click a link according the the link name it appends the html into the content area, here is the append script for this section
So my goal is where the input box is the ID datepicker im trying to use the jQueryUI datepicker function from jQuery, i tested a regular input box in the actual BODY and not through the append method and it works fine, my issue is im guessing the single vs the double qoutation marks, the ' vs "
how can i solve this issue?
else if (this.id == "tour"){
$("#content").empty();
$("#content").append("<p>\
<h2> Add Tour Dates </h2>\
<form action='tourdates.php' method='post'>\
<input type='text' name='title' placeholder='Title' id='title'>\
<input type='text' name='venueName' placeholder='Vanue Name' id='venueName'>\
<input type='text' name='venueStreetAdress' placeholder='Location Street Adress' id='venueStreetAdress'>\
<input type='text' name='venueCity' placeholder='City' id='venueCity'>\
<input type='text' name='venueState' placeholder='State' id='venueState'>\
<input type='text' name='venueZip' placeholder='Postal Code' id='venueZip'>\
<input type='text' name='datepicker' id='datepicker'>\
<input type='text' name='time' placeholder='Time' id='time'> </p>\
");
If you have a strong feeling that there's something to do with your quotation mark, try to narrow down the problem: Have you tried to put this in a separated variable and make the reference there?
var htmlStuff = "<p>\
<h2> Add Tour Dates </h2>\...";
$("#content").append(htmlStuff);
But I don't think your problem is related to double/single quotes, but with the asynchronous operation of setting up a link to append HTML and try to assign an UI widget before the components exist in the DOM.
Although I find this very bad for code readability, one option would be to append another call to a function that defines the DatePicker (like a "callBack") right after your append. It should work, e.g.:
$('something').append(" <html stuff> ").defineDatePicker();
function defineDatePicker(){
$('one of the elements within that html stuff').datepicker();
}
I am building a Lift application, where one of the pages is based on the "File Upload" example from the Lift demo at: http://demo.liftweb.net/file_upload.
If you look at the source code for that page... you see that there is a Lift "snippet" tag, surrounding two "choose" tags:
<lift:snippet type="misc:upload" form="post" multipart="true">
<choose:post>
<p>
File name: <ul:file_name></ul:file_name><br >
MIME Type: <ul:mime_type></ul:mime_type><br >
File length: <ul:length></ul:length><br >
MD5 Hash: <ul:md5></ul:md5><br >
</p>
</choose:post>
<choose:get>
Select a file to upload: <ul:file_upload></ul:file_upload><br >
<input type="submit" value="Upload File">
</choose:get>
</lift:snippet>
The idea is that when a user hits the page for the first time (i.e. a GET request), then Lift will show the form for uploading a file. When the user submits the form (i.e. a POST request to the same page), then Lift instead displays the outcome of the file being processed.
With my application, the new wrinkle is that my "results" POST view needs to also contain a form. I want to provide a text input for the user to enter an email address, and a submit button that when pressed will email information about the processed file:
...
<choose:post>
<p>
File name: <ul:file_name></ul:file_name><br >
MIME Type: <ul:mime_type></ul:mime_type><br >
File length: <ul:length></ul:length><br >
MD5 Hash: <ul:md5></ul:md5><br >
</p>
<!-- BEGIN NEW STUFF -->
Output: <br/>
<textarea rows="30" cols="100"><ul:output></ul:output></textarea>
<br/><br/>
Email the above output to this email address:<br/>
<ul:email/><br/>
<input type="submit" value="Email"/>
<!-- END NEW STUFF -->
</choose:post>
...
However, both the GET and POST versions of this page are wrapped by the same Lift-generated form, which has its "action" set to the same snippet in both cases. How can I change this such that in the POST version, the form's action changes to a different snippet?
In a typical web framework, I would approach something like this with an "onclick" event and two basic lines of JavaScript. However, I haven't even begun to wrap my mind around Lift's... err, interesting notions about writing JavaScript in Scala. Maybe I need to go down that route, or maybe there's a better approach altogether.
First, I will suggest you use Lift's new designer friendly CSS binding instead of the custom XHTML tag.
And one thing you should remember when you're using Lift's snippet, is that it is recursive, you could put an lift snippet inside another snippet's HTML block.
For example, if you wish there is another form after POST, then just put it into the block.
<choose:post>
<p>
File name: <ul:file_name></ul:file_name><br >
MIME Type: <ul:mime_type></ul:mime_type><br >
File length: <ul:length></ul:length><br >
MD5 Hash: <ul:md5></ul:md5><br >
</p>
<!--
The following is same as <lift:snippet type="EMailForm" form="post" multipart="true">
-->
<form action="" method="post" data-lift="EMailForm">
<input type="text" name="email"/>
<input type="submit" />
</form>
</choose:post>
Then deal with the email form action at snippet class EMailForm.
Finally, you may pass the filename / minetype and other information by using hidden form element or SessionVar.
I agree with Brian, use Lift's new designer friendly CSS binding.
Use two separate forms, one for the file upload and one for the submitting the email. Use S.seeOther to redirect the user to the second form when the first has finished processing.
I also prefer the new 'data-lift' HTML attribute.
File upload HTML:
<div data-lift="uploadSnippet?form=post">
<input type="file" id="filename" />
<input type="submit" id="submit" />
</div
File upload snippet:
class uploadSnippet {
def processUpload = {
// do your processing
....
if (success)
S.seeOther("/getemail")
// if processing fails, just allow this method to exit to re-render your
// file upload form
}
def render = {
"#filename" #> SHtml.fileUpload(...) &
"#submit" #> SHtml.submit("Upload", processUpload _ )
}
}
GetEmail HTML:
<div data-lift="getEmailSnippet?form=post">
<input type="text" id="email" />
<input type="submit" id="submit" />
</div
Get Email Snippet:
class getEmailSnippet {
def processSubmit = {
....
}
def render = {
"#email" #> SHtml.text(...) &
"#submit" #> SHtml.submit("Upload", processSubmit _ )
}
There's a bit more on form processing in my blog post on using RequestVar's here:
http://tech.damianhelme.com/understanding-lifts-requestvars
Let me know if you want more detail.
Hope that's useful
Cheers
Damian
If somebody comes up with a more elegant (or "Lift-y") approach within the next few days, then I'll accept their answer. However, I came up with a workaround approach on my own.
I kept the current layout, where the view has a GET block and a POST block both submitting to the same snippet function. The snippet function still has an if-else block, handling each request differently depending on whether it's a GET or POST.
However, now I also have a secondary if-else block inside of the POST's block. This inner if-else looks at the name of the submit button that was clicked. If the submit button was the one for uploading a file, then the snippet handles the uploading and processing of the file. Otherwise, if it was the send email submit button shown after the first POST, then the snippet processes the sending of the email.
Not particularly glamorous, but it works just fine.
I think that if you assign a name attribute to an input type='text' that name becomes the post variable. How can you assign a post variable to am html textarea. i cant seem to get it working. Im just trying to take a user's imputed text from the textarea and put it into a mysql database. thanks
form:
<form action='index.php' method='POST'>
<textarea name='form'></textarea>
</form>
<?php $input=$_POST['form']; ?>