I have a page in DNN like:
http://nolimitswebdesign.com.dnnmax.com/test/tabid/57/ctl/Edit/mid/374/Default.aspx
I need to send a post request to that page using PHP+Curl which modifies the content of text area and saves it (like as if someone modified it manually and clicked the update button on that page). I doubt that with DNN it might not be possible. Please advise.
Here is how I would approach the problem the same general technique will work on any website. In this context DNN is just an average ASP.Net website. First look at the javascript that runs when update is clicked:
__doPostBack('dnn$ctr374$EditHTML$cmdUpdate','')
Find the __doPostBack method:
function __doPostBack(eventTarget, eventArgument) {
if (!theForm.onsubmit || (theForm.onsubmit() != false)) {
theForm.__EVENTTARGET.value = eventTarget;
theForm.__EVENTARGUMENT.value = eventArgument;
theForm.submit();
}
}
This is the standard doPostBack() method used in many ASP.Net forms. From this you can see that you want to fill in the __EVENTTARGET and __EVENTARGUEMENT hidden fields with the appropriate values from the method call and submit the form.
Of course you also need to fill in the data you actually want to save into the input control for the text box. It will probably be easier to do this if you use the basic text box mode of the HTML module, then you just need to set the value of a textarea rather than figure out where to insert the value in the fckEditor, and the technique will be still work if the site is configured to use the Telerik provider instead of the fck provider.
One thing to watch out for is that the control name may change from time to time, so you need to be sure you are reading the correct ids for the event target, and textarea not just hard coding something.
Related
I have 2 lightboxes. 1 for showing error lightbox and 1 for showing success lightbox.
I have a amp form and a input textfield where user enters a text.
I need to compare the value entered by the user and based on the value show either 1 of the 2 lightbox.
If value matches the text to compare then show success lightbox else show error lightbox.
My question is how can I show 1 of the 2 lightboxes if a condition is met either true or false.
if true then show success lightbox and if false then show error lightbox.
I am using action-xhr = submitform.php and method="POST"
Also I would like to know what server side code do I need to write (if I am using php to test for matching text entered by user and how to retrieve the data sent back from the server in the form).
I am new to AMP for EMAIL and trying to do this for the first time.
If anybody can help I will really appreciate that.
If you need anymore details let me know.
How can I do it.
Regards,
iceheros
I tried a lot of sample demos on the official website but could not find a concreate solution to the problem.
To show one of two lightboxes based on a condition being met, you can use the amp-state component to store the state of the condition, and then use amp-bind to bind the visibility of the lightboxes to the state.
For example, you can use the amp-state component to set an initial state for the condition:
<amp-state id="myState">
<script type="application/json">
{
"showSuccess": false,
"showError": false
}
</script>
</amp-state>
Then, you can bind the visibility of the success and error lightboxes to the state using the [hidden] attribute and the amp-bind component:
<div id="successLightbox" [hidden]="!myState.showSuccess">Success Lightbox</div>
<div id="errorLightbox" [hidden]="!myState.showError">Error Lightbox</div>
To compare the value entered by the user to the text you want to compare it to, you can use the amp-form component to submit the form data to a server-side script (e.g. submitform.php) and then use server-side code (e.g. PHP) to compare the values and set the state accordingly.
For example, in your submitform.php file, you can retrieve the input value using the $_POST variable, compare it to the text you want to compare it to, and then return the appropriate state to the client.
$inputValue = $_POST['inputValue'];
$textToCompare = "textToCompare";
if ($inputValue == $textToCompare) {
$response = array("showSuccess" => true, "showError" => false);
} else {
$response = array("showSuccess" => false, "showError" => true);
}
echo json_encode($response);
On the client side, you can use the amp-form component's on="submit-success" attribute to update the state with the response from the server:
Please adjust code to your needs and requirements
I've just designed my first form in HTML and a PHP page to display the results. In the form the user inputs some codes in response to some questions, a bit like a multiple choice, so for example, these are "ABC". The PHP page displays the code to the user as a link, which when clicked will go to a bookmark (a link within the same page) with the ID #ABC. This was achieved with simple manipulation of the PHP variable as follows:
<?php
$code = "ABC"
$part1 = '<a href="mywebpage.php#';
$part2 = '">Go to this code</a>';
$string = $part1.$code.$part2;
echo $string;
?>
(i.e. Link in the page says "go to this code" and when clicked will go to section with bookmark ABC)
This all works fine, but I simply need to know if there is a way of error trapping so that if a bookmark does not exist for the code entered, a message can be displayed to the user instead? Can this be done using the PHP variable, or do I need to use JavaScript? One work around may be to search the web page for the ID "#ABC'. Is it possible to do this? Another option would be to store an array of valid codes on the server then query this before setting the bookmark, but I want to keep it as simple as possible. Any help appreciated, thanks.
What you call a "bookmark" we call a hash. And when you say "go to a bookmark" you mean a hash change. Hash changes do not make an additional request to the server, it is all handled on the client-side, therefore this must be done with JavaScript and not PHP.
So let's just do some simple JavaScript on hash change window.onhashchange that will search for an element with that ID and if it's not found alert something.
window.onhashchange = function(){
if(!document.getElementById(location.hash){
alert("not found");
}
}
I have a PHP page that uses jQuery to let a user update a particular item without needing to refresh the page. It is an availability update where they can change their availability for an event to Yes, No, or Maybe. Each time they click on the link the appropriate jQuery function is called to send data to a separate PHP file (update_avail.php) and the appropriate data is returned.
Yes
Then when clicked the params are sent to a PHP file which returns back:
No
Then, if clicked again the PHP will return:
Maybe
It all works fine and I'm loving it.
BUT--
I also have a total count at the bottom of the page that is PHP code to count the total number of users that have selected Yes as their availability by simply using:
<?php count($event1_accepted); ?>
How can I make it so that if a user changes their availability it will also update the count without needing to refresh the page?
My thoughts so far are:
$var = 1;
while ($var > 0) {
count($day1_accepted);
$var = 0;
exit;
}
Then add a line to my 'update_avail.php' (which gets sent data from the jQuery function) to make $var = 1
Any help would be great. I would like to stress that my main strength is PHP, not jQuery, so a PHP solution would be preferred, but if necessary I can tackle some simple jQuery.
Thanks!
In the response from update_avail.php return a JSON object with both your replacement html and your new counter value.
Or to keep it simple, if they click "yes" incriment the counter, if they click No or maybe and their previous action wasn't No or Maybe decrease the counter.
Assuming your users are logged into the system I'd recommend having a status field in the user table, perhaps as an enum with "offline", "available", "busy", "unavailable" or something similar and use the query the number of available users whilst updating the users status.
If you were to do this you'd need to include in extend your methods containing session)start() and session_destroy() to change the availability of the user to available / offline respectively
The best way is the one suggested by Scuzzy with some improvements.
In your php, get the count from the database and return a JSON object like:
{ count: 123, html: 'Yes' }
In your page, in the ajax response you get the values and update the elements:
...
success: function(data) {
$("#linkPlaceholder").html(data.html);
$("#countPlaceholder").html(data.count);
}
...
I am using Symfony 1.3.2 with Propel ORM on Ubuntu 9.10.
I have developed a form that dynamically populates a select widget with cities in a selected country, using AJAX.
Before the data entered on the form is saved, I validate the form. If validation fails, the form is presented back to the user for correction. However, because the country list is dynamically generated, the form that is presented for correction does not have a valid city selected (it is empty, since the country widget has not changed yet).
This is inconvenient for the user, because it means they have to select ANOTHER country (so the change event is fired), and then change back to the original country they selected, then FINALLY select the city which they had last selected.
All of this is forced on the user because another (possibly unrelated) field did not vaildate.
I tried $form->getValue('widget_name'), called immediately after $form->bind(), but it seems (infact, IIRC, if form fails to validate, all the values are reset to null) - so that does not work.
I am currently trying a nasty hack which involves the use of directly accesing the input (i.e. tainted) data via $_POST, and setting them into a flash variable - but I feel its a very nasty hack)
What I'm trying to do is a common use case scenario - is there a better way to do this, than hacking around with $_POST etc?
What I do for this exact issue is that I post the form to the same action that generated it, and in that action, I grab any selected countries/regions/cities as POST variables and pass them back to the template (regardless of validation). In the template, I then use JQuery to set the select values to what they were. When validation passes, they get used. When not, they get passed back to template.
If you can tolerate a little PHP in your JQuery, you could do this in the template:
$(document).ready(function()
{
$("#country-select").val('<?php echo $posted_country; ?>');
});
If you use this approach, don't forget to initialise $this->posted_country in your template the first time around or Jquery will get confused.
I guess you could also use $this->form->setWidget(...)->setDefault(...) or something similar, but I havent found a way around using $_POST as accessing the elements seems to need binding the form otherwise.
UPDATED CODE IN RESPONSE TO COMMENTS BELOW:
if($_POST['profile']['country_id'] != '')
{
$this->posted_country = $_POST['profile']['country_id'];
$q = Doctrine_Query::create()
->select('c.city_id, c.city_name')
->from('City c')
->where('c.country_id = ?', $this->posted_country);
$cities = $q->execute(array(), Doctrine_Core::HYDRATE_NONE);
foreach($cities as $city) $list[$city[0]] = $city[1];
$this->form->setWidget('city_id', new sfWidgetFormChoice(array('choices' => array('' => 'Please select') + $list)));
}
So... I get the country from the post, I query db with that, get cities, and craft cities back into a dropdown. Then in the template, you can set a default selected city with something like $this->posted_city (which would be a POST variable too, if exists).
I have a simple form with a select menu on the node display page. Is there an easy way to validate the form in my callback function? By validation I don't mean anything advanced, just to check that the values actually existed in the form array. For example, without ajax, if my select menu has 3 items and I add a 4th item and try to submit the form, drupal will give an error saying something similar to "an illegal choice was made, please contact the admin."
With ajax this 4th item you created would get saved into the database. So do I have to write validation like
if ($select_item > 0 && $select_item <= 3) {
//insert into db
}
Or is there an easier way that will check that the item actually existed in the form array? I'm hoping there is since without ajax, drupal will not submit the form if it was manipulated. Thanks.
EDIT:
So I basically need this in my callback function?
$form_state = array('storage' => NULL, 'submitted' => FALSE);
$form_build_id = $_POST['form_build_id'];
$form = form_get_cache($form_build_id, $form_state);
$args = $form['#parameters'];
$form_id = array_shift($args);
$form_state['post'] = $form['#post'] = $_POST;
$form['#programmed'] = $form['#redirect'] = FALSE;
drupal_process_form($form_id, $form, $form_state);
To get $_POST['form_build_id'], I sent it as a data param, is that right? Where I use form_get_cache, looks like there is no data. Kind of lost now.
Since you're already using AJAX, why not just write a bit of jQuery to only allow form submission if the choice is within the list of legal choices? This can be done within the custom module it already looks like you're working on (using drupal_add_js()).
It is not especially 'easy', but the standard way to do it would be to use Drupals Forms API for the callback submission as well - that way, you'll get the same validation that would happen on a non js submit.
Take a look at Adding dynamic form elements using AHAH. While it does not match your scenario exactly (they rebuild the form on the callback to add new elements, not to save data), the explanation of the processing workflow is pretty helpful.
Then there are several modules that try to offer AJAX form submission in a generic way - you could check their code on how to do it (or maybe just use them ;)
Ajax submit (only has a dev version)
Ajax (has an 'official' release)
Finally, there are efforts to put better support this functionality into core in Drupal 7 - the related discussions might also help.