I have List of Users with friends/unfriends button (there are 4 states for this button according to user's relationship) I need to update button status with ajax call to server.
What is the best practice here:
Use remote: true for button and write update in users.js.erb
Add handler for button state and click in .js file and send requests with ajax
Another option I didn't mention (I'm new to Rails)
Ultimately, I think you will find that the first option (remote: true and update via a *.js.erb template) is the best approach.
In general, this option is easy and quick to implement. As you move farther and farther down the Rails Rabbit Hole, you can play with other approaches (straight jQuery or other JS, etc.).
Related
Inside my app, I'm using the WKWebView to display a website. My goal is, when user is pressing a button on this website, I want to stop an action linked to this event and replace it with my own, natively made (custom action outside the WKWebView). I've been trying to search for any solution to fetch mentioned event but unsuccessful. What more came to my mind, if there is a way to fetch a JavaScript in WKWebView, I have a possibility to add some JS script code to this site (not to delete the action I want to block). Thank you for any help.
First, do you have a permission to mess with this web site's behaviour? I assume you do, otherwise it is likely illegal.
Second, try using Safari Web Inspector with a device/simulator, and use the DOM tree and console tools to find out what is the HTML/javascript that is involved with this action on this site.
If you can't find what happens in HTML/JS yourself, feel free to post a new separate question on SO with your target URL, some HTML/JS code, and which link/action you want to replace. Tag the question with "javascript" and ask if it is possible to write some javascript to replace that particular action to some custom JS code.
Usually there are 2 types of actions: either it is something that provokes AJAX calls to a server API triggered by an event handler, or it is a plain HTML link that results in a web navigation. For both cases it is possible to write a JS script that overrides the action.
Finally, use WKUserScript to inject javascript into the page, and override the action. Use window.webkit.messageHandlers to send an event from your custom action to the app side. Use WKScriptMessageHandler to process the event in the Objective-C or Swift code.
See an example here: http://nshipster.com/wkwebkit/
I've been trying to figure this out using various different methods. I'm trying to create a script/bookmark or some type of quick action to open a browser tab or window with a specific URL, and automatically log me in using my credentials. I'm not all that concerned about security for this at the moment.
At first I figured I'd try to use a javascript bookmark to do this, but nothing I found in my research worked. Next I tried to create a bash script, but I couldn't figure out how to send the credentials in via the terminal. Most recently, I literally copied the source code of a site, created a local file and tried to hack together something where I could prefill the form data with credentials and use JS to submit the form, and I've gotten close with this, but for some reason when I use the JS submit function, it errors out and says that the username and password are invalid. But when i turn off the submit function and manually click "log in" on my local html page, it works as expected. I want this to be a one click process, so the idea of using onload/submit or something to that affect is really important to me.
The site I'm testing with has a Rails backend and my next attempt might be trying to use POST to do what I'm thinking, but that's currently outside of my level of knowledge on the subject.
Anyone answering: i do not want to use a password manager to accomplish this.
My requirement is that i will either be able to a) run a script or b) use a 1-click option to do this per website. Ideally i'd be able to set this up in a sort of programmatic way to do this with multiple sites, but I'd be happy with 1 at the moment.
i know similar questions have been answered before, but I haven't been able to use information from those posts (the ones I've seen anyway) to figure out a good way to do this.
Create a bookmark for the current page you have opened.
Edit the bookmark
Change the value for the URL to something like this.
(javascript:(function(){CODE_GOES_HERE_FROM_BELLOW})();
find the field for username and password on the page.
Given example for hotmail
var inputs = document.getElementsByTagName('input'); for(var i=0;i<inputs.length;i++){if(inputs[i].name === 'passwd'){inputs[i].value = 'YOUR_PASSWORD'}else if(inputs[i].name === 'loginfmt'){inputs[i].value = 'YOUR_USERNAME'}}; document.getElementById(document.getElementsByTagName('form')[0].id).submit();
OR
try out casperjs.
The proposed solution didn't work for me and rather than spending tons of time installing a testing framework that I'll never use other than for this purpose, I decided to try to do this another way.
First, I found out that the reason my JS wasn't working before is because the site did not allow a JS submit to be done, or atleast that's what it seemed to be when I got this error: "Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user's experience"
The javascript I was using was in fact working, just not submitting. I used the following code to fill the fields (using "Class Name" elements on the page since there was no name or ID):
document.getElementsByClassName('username')[0].setAttribute('value', 'user');
document.getElementsByClassName('password')[0].setAttribute('value', 'password');
As I mentioned, the problem was when I tried to use JQuery to submit the form: document.getElementsByClassName('loginForm')[0].submit();
Which is when the above error cropped up. I can't really say for sure whether this is the root of the cause, but the page does submit, but I get an invalid username/password error when I do
I haven't figured out a great way to get around this just yet, but my short-term, "hacky" solution was to use Applescript to send a return keystroke to the browser to submit the form. I'd ideally like to figure out how to get the submission to work using JQuery, but I'm not sure how to get around it.
I want to add a confirmation popup when a user navigates away from one of my presenters and is replaced in a NestedSlot. Can I intervene before a place is revealed and check the current presenter?
Edit: I just learned that the PlaceManager has some support for this using the setOnLeaveConfirmation method. That said, I still don't think this will work for my case because I want the confirmation popup to be associated with a single nested presenter. I would also prefer to manually intervene because I already have a confirmation modal for a cancel button that I want to reuse.
It would have been simple if you could override window.confirm() using GQuery the same way as you can in JQuery, however that's not the case. Your best option is still using placeManager.setOnLeaveConfirmation(). You could probably emulate the same behaviour as window.confirm() with a PopupWidget, but then it wont block access to other parts of the page.
tl:dr -> User notification system on website. Can you avoid the need to call a javascript script to render notifications after ajax loads? (a base view that calls it would work, but there are no base views afaik)
I am looking for a way to add a User Notification System to my website. Such system would be responsible for displaying messages like 'Import success', 'Import failed', 'Session timed out' etc.
I know similar questions have been answered before, but here's my question:
How should I do it to get as close as possible to having the notifications display themselves as soon as possible after being put to TempData? Having them rendered on _layout page would work, but only for requests that ask for whole page. What about loading only parts of website through ajax -> can I avoid having to write JS script in ajax callbacks or partial views?
I am looking for something to prevent writing multiple calls to same function.
Toastr is your notification Friend. Demo Page
you can install it from Nuget Install-Package toastr
See my SO question - for reference
Situation: I needed to add form with POST method to CMS page. I created custom hook and a module displaying the form successfully. Then I need to react to user input errors eg. when user doesn't enter email address I need to detect it, display the whole page again together with the form and with "errors" in user input clearly stated.
Problem: The problem is to display the WHOLE page again with connected information (eg. about errors etc.). In the module PHP file when I add this kind of code,
return $this->display(__FILE__, 'modulename.tpl');
it (naturally) displays ONLY the form, not the whole CMS page with the form.
In case of this code,
Tools::redirectLink('cms.php?id_cms=7');
I can't get to transfer any information by GET neither POST method.
$_POST['test'] = 1;
Tools::redirectLink('cms.php?id_cms=7&test');
I tried to assign to smarty variables too
$smarty->assign('test', '1');
(I need to use it in .tpl file where the form itself is created) but no way to get it work.
{if isset($test)}...,
{if isset($smarty.post.test)}...,
{if isset($_POST['test'])}... {* neither of these conditionals end up as true *}
Even assigning a GET parameter to url has no impact, because there is link rewriting to some kind of friendly url I guess, no matter I included other argument or not. ([SHOPNAME]/cms.php?id_cms=7&test -> [SHOPNAME]/content/7-cmspage-name)
My question is: is there a way to "redirect" or "reload" current page (or possibly any page generally) in prestashop together with my own data included?
I kind of explained the whole case so I'm open to hear a better overall solution than my (maybe I'm thinking about the case in a wrong way at all). This would be other possible answer.
The simplest method would be to use javascript to validate the form - you can use jQuery to highlight the fields that are in error; providing visual feedback on how the submission failed. In effect you don't allow the user to submit the form (and thus leave the page) until you're happy that the action will succeed. I assume that you will then redirect to another page once a successful submission has been received.
There's lots of articles and how-tos available for using javascript, and indeed jQuery for form validation. If you want to keep the site lean and mean, then you can provide an override for the CMS controller and only enqueue the script for the specific page(s) you want to use form validation on.
If the validation is complex, then you might be best using AJAX and just reloading the form section of your page via a call to your module. Hooks aren't great for this kind of thing, so you might want to consider using an alternative mnethod to inject your code onto the cms page. I've written a few articles on this alternative approach which can be found on my prestashop blog