User-selectable Limit - My Forums

User-selectable Limit

todd.b — Mar 24, 2018, 09:22 PM

Revo 2.6.1

Using pdoResources / pdoPage (and pagination controls) to show a listing of resources is there a way to allow a visitor to select the number of results to display using a picker?

Right now I'm using the &limit=`10` property but it's static, I would prefer the value be set from the front-end. For example, the default value might be 10 with additional picker options of 15, 20, Show All. And changing the value would automatically refresh the page.

Re: User-selectable Limit

markh — Mar 28, 2018, 10:10 AM

In your snippet you'd need to do something like this:

setPlaceholder('results_to_show', $value);
// OR
// if you want to use the snippet inside the call directly
return $value;

Re: User-selectable Limit

todd.b — Mar 27, 2018, 07:50 AM

I added the input field but it's still not working. Not sure what I'm doing wrong.

Thanks BobRay and Mark H., I'll take another look at it when I have more time.

Re: User-selectable Limit

BobRay — Mar 27, 2018, 04:43 AM

Looking at Mark's example above is this all that's required?
($_POST['results_to_show'])

Yes, but you need an input field with name="results_to_show" in order for that value to end up in the $_POST array.

Re: User-selectable Limit

todd.b — Mar 26, 2018, 06:38 PM

Oh, that's a nice touch. I could use that on adifferent site. Thank you.

I seem to be having trouble getting the stripped-down version Mark suggested to work.

I created a basic form:

I set &limit=`[[!++results_to_show]]` and created a snippet named "results_to_show" then added the code you provided but nothing happens. Since I don't need to store anything I'm unsure how to modify the code you provided.

Looking at Mark's example above is this all that's required?

($_POST['results_to_show'])

Re: User-selectable Limit

BobRay — Mar 26, 2018, 06:17 PM

I assumed that you wouldn't want to reload the page every time the user changed the value or have the value revert to the default on every visit.

Re: User-selectable Limit

markh — Mar 26, 2018, 06:11 AM

The user setting doesn't seem needed to me either. Just add a simple form, grab the value ($_POST['results_to_show'] in Bob's example), and apply the limit to your snippet call.

Re: User-selectable Limit

todd.b — Mar 26, 2018, 03:37 AM

@BobRay, I'm curious as to why this would need to be stored as a user-setting at all. While it's likely I would use this on pages accessible only to registered users, it would mostly be used on public-facing pages.

Re: User-selectable Limit

todd.b — Mar 25, 2018, 04:02 AM

Thanks @BobRay, I'll take a run at this and see how I fare.

Re: User-selectable Limit

BobRay — Mar 24, 2018, 10:19 PM

I think you could do it with a user setting called results_to_show. You could put a mini form on the page with the number of results to show, and when it's submitted, save the value to a User Setting.

Then use this in the pdoResources call:

&limit=`[[!++results_to_show]]`

The code to save the value would look something like this:

if (isset($_POST['results_to_show']) && isset($_POST['submitValue'])) {
    $userId = $modx->user->get('id');
    $key = 'results_to_show';
    $value = $_POST['results_to_show'];

    $setting = $modx->getObject('modUserSetting', array('user' => $userId, 'key' => $key));

    if (! $setting) {
        $setting = $modx->newObject('modUserSetting');
        $setting->set('user', $userId);
        $setting->set('key', 'results_to_show');
    }

    $setting->set('value', $value);
    $setting->save();
}
return;

The value could also be stored in an extended field of the user profile, or in an unused user or profile field, but that would require using another snippet or tag to retrieve the value.