I have a jsp page with two radio tags.
The page contains a struts2 form. When I submit the form one of two radio must be automatically checked.
Is it possible to do that?
One of the features of a radio input is that an item in a radio set once selected cannot be deselected except by another member of the set being selected (unlike a checkbox "set"). i.e. if you initialise the page with a selection you can guarantee you will have a value. Does a default value exist you can do this for? Then you can just set checked="checked" on that item.
Alternatively you'll just have to add another validation rule in JS and/or the server side.
I believe that with:
<html:radio property="foo" value="yes"/>
this radio tag will show selected (by default) if the method getFoo() of the form-bean returns the string "yes".
May be you can use that to link your form submit to your radio tags ?
Related
I am working with automation of the Standard Cases Object in salesforce app. There are different types of cases corresponding to each radio group.
there is no unique identifier for the same. How can i locate the radio button?
I cannot use the (.contain()) attribute as there is no label connected to radio button tag.
both of the span tags below belong to same tag.
and there are different radio buttons in the div tag.
(this is radio button)
Label
(this is the radio button label)
If all elements have same locators (for multiple matches) we could use findElements method to get all the matches and as we get list of WebElement as return type then can access the required one using index.
List<WebElement> elementList=driver.findElements(By.xpath("locator"));
Once we have the list we could use index or could apply other iteration techniques in list as per our requirement to access the webelement.
WebElement firstElement=elementList.index(0);
element.click();
if you have
<button class="button yellow" type="submit"
name="button">Log in</button>
and you submit it, what gets posted to the server for the button which has a name but no value attribute?
The reason I ask is that I'm parsing HTML forms, and need to post the named values that send data to the server. I got the others covered, but wasn't sure about button.
According to the HTML Spec, a button's value is either determined by its value attribute or is an empty string. A button's value is only submitted with the form if the button has a name and is used to initiate form submission. If the button in your example is clicked, the resultant submission will be:
"button=" (quotes added)
Some browsers (mainly older IE versions) have incorrect implementations of this button behaviour that either set the value to the button's contents or submit all button values regardless of initiation source.
button does not get posted to server when the form is posted. Only input type's like text, password, select elements etc., which accepts user inputs will be posted to the server
Button never supplies value to form. It just provides a submit event that tells the browser to submit that form with all the input tags to the action attribute inside your form tag using the method attribute value. Button only provides the event and not the values.
There will be nothing posted to the server for buttons. When you click a button, it invokes the action of submit, that is all.
I tried it out by printing the request.POST in django.
This image shows a "Log in" button with no value but name="button", as asked
The console shows
< QueryDict: {u'csrfmiddlewaretoken': [u'9aAx..'], u'sensor': [u'sd1'], u'button':[u'']}>
So, in this case, the form is sent as a dictionary and for the buttons the key, value pair is "button" : " ". So, if you try to get value of this button with request.POST.get, you will get NULL.
So, the answer to your question is the form consolidates all the input values, which can be accessed with their 'name' including buttons. If no value is provided, it returns NULL.
I have a table that lists items. I have a form tag that surrounds this table. In this table I have ADD buttons that adds new rows to the database. I have EDIT buttons that edits a row as well. The form posts to the same action on the controller.
Now I need to add a filter row on the first which means I need to add a Filter button to submit the form with the filter parameters. Since this is still inside the main form, I now have the following problem: When I click the Filter button, the inputs that are used for the ADD button are being validated before anything gets posted. How can I prevent the validation from occurring when the user clicks the Filter button?
Make sure the Filter button is of type "button" not "submit" and do filter using ajax
As i see it, the easy way would be to fire the submit via js with:
.submit();
The other way would be to disable validation on that form with this:
$('#form').validate({
onsubmit : false
});
or
$('#form').unbind('submit')
I have one suggestion. Name Add button inputs differently and add row using javascript/ajax. When posting, Add button inputs will not be validated because they have different names
I am brand new to Perl.
Currently i am doing something like this to get the value of the selected radio button in the group
$myVariable = param('radioButtonGroupName');
I was wondering if it were possible to get the ID of that selected radio button.
Thanks
No it is not possible, the ID is not sent to the server.
You could set the value and the ID to the same, but that might not work for your application.
You can, but not directly.
What you need to do is the following workaround:
Create a HIDDEN input element <INPUT TYPE=HIDDEN NAME='radio_id' VALUE=''>
On your radio buttons, create an onChange handler, which will contain JavaScript code to
check which radio button was pressed and its ID, and populate the ID value into radio_id's elemebt's value.
Your script will then have access to the ID via param('radio_id');
Then again, simply matching IDs and values for radio button would be sufficient :)
I have a case where I want to allow a form variable to be set to one of a set of value (in my current case true/false) or left unset (in which case no value is returned rather than some 'none' value or a blank). A check box can give the unset bit but only one set value. A radio element could work, sort of. But once a value is selected there is no way to go back to unset. All the other inputs I've looked at always set the variable no matter what.
Am I missing something or am I just going to have to accept a less-than-ideal solution?
Three radio buttons or a <select> with three <option> will do.
Put three radios: A, B and None
Do a 'drop down menu' as show here: http://www.echoecho.com/htmlforms11.htm
Create the default value as 'None' followed by option A and then option B.
What about a drop down list with
---Please Select---
Option A
Option B
I've been applying to a lot of jobs online lately, and this is the route people generally have been taking.
Would a dropdown box work?
<select name="choices">
<option>(None)</option>
<option value="a">Choice A</option>
<option value="b">Choice B</option>
</select>
You would need to use some javascript. If you have jQuery there are several tri-state checkbox plugins.
For example: http://plugins.jquery.com/project/tristate-checkbox
There are also probably non jQuery scripts if you google for "tri state checkbox"
For example: http://caih.org/open-source-software/tri-state-checkbox-in-javascript/
Using 3 radio buttons in one group, you could hide the first 'none' radio button with CSS (visibility:hidden; or display:none;), and if that's the one still selected during your form validation, then the user hasn't chosen either of the true or false radios.
EDIT (post comments):
If no-Javascript is a requirement, then you can conditionally apply a 'hideableItem' class on the hidden radio, if scripting is disabled the worst you'll get is 3 radio for the user to choose from, as others have described. If JS is enabled, then the default radio is hidden and provides the behaviour i've described.
The conditional hiding if JS is dis/enabled technique is described here: http://lucassmith.name/2008/10/script-to-add-css-only-when-javascript-is-available.html
I use it all the time, its great.