How to prevent page reload while bookmarking it? - php

Question

I am making a book library site using laravel. I am trying to add bookmark functionality. I have tried doing something like that on click of bookmark button, page no is being send to database and it is working. Issue is that on return from controller page is getting reload causing book to back on page no 1. Is there is any way that data sends to database without page reload??
I know a bit that ajax do this, but I am using JavaScript in my application and I tried to deploy ajax with it but no luck.
I am showing up my code. Any good suggestions would be highly appreciated.
My javascript function:
function bookmark()
{
book = '<?php echo $book->id ?>';
$.ajax({
type: "post",
url: "save_bookmark",
data: {b_id:book, p_no:count},
success: function(response){
console.log(response);
},
error: function(error){
console.log(error);
}
});
});
}
count is defined up in script.
My route:
Route::post("save_bookmark/{b_id}/{p_no}",'BookmarkController#create')->name('save_bookmark');
My controller:
public function create($b_id, $p_no)
{
$b=new bookmark;
$b->u_id=Auth::user()->id;
$b->book_id=$b_id;
$b->p_no=$p_no;
$b->save();
return response()->json([
'status' => 'success']);
}
My html:
<li><a id="bookmark" onclick="bookmark()" >Bookmark</a></li>
Note: There is a navbar of which bookmark is a part. There is no form submission.

Answer 1

try this: use javascript to get the book id
$("#btnClick").change(function(e){
//console.log(e);
var book_id= e.target.value;
//$token = $("input[name='_token']").val();
//ajax
$.get('save_bookmark?book_id='+book_id, function(data){
//console.log(data);
})
});
//route
Route::get("/save_bookmark",'BookmarkController#create');

Answer 2

you need add event to function and add preventDefault
<button class="..." onclick="bookmark(event)">action</button>
in js:
function bookmark(e)
{
e.preventDefault();
book = '<?php echo $book->id ?>';
$.ajax({
type: "post",
url: "save_bookmark",
data: {b_id:book, p_no:count},
success: function(response){
console.log(response);
},
error: function(error){
console.log(error);
}
});
});
}
in controller you ned use it:
use Illuminate\Http\Request;
...
...
public function create(Request $request)
{
$b=new bookmark();
$b->u_id=Auth::user()->id;
$b->book_id=$request->get('b_id');
$b->p_no=$request->get('p_no');
$b->save();
return response()->json([
'status' => 'success']);
}
in route use it:
Route::post("save_bookmark/",'BookmarkController#create')->name('save_bookmark');

Answer 3

Well, assuming your bookmark() JavaScript function is being called on a form submit, I guess you only have to prevent the form to be submitted. So your HTML code would looks like this:
<form onsubmit="event.preventDefault(); bookmark();">
Obviously, if you're handling events in your script.js it would rather looks like this:
HTML
<form id="bookmark" method="POST">
<input type="number" hidden="hidden" name="bookmark-input" id="bookmark-input" value="{{ $book->id }}"/>
<input type="submit" value="Bookmark this page" />
</form>
JavaScript
function bookmark(book_id, count) {
$.ajax({
type: "post",
url: "save_bookmark",
data: {
b_id: book_id,
p_no: count
},
success: function (response) {
console.log(response);
},
error: function (error) {
console.log(error);
}
});
}
let form = document.getElementById('bookmark');
let count = 1;
console.log(form); //I check I got the right element
form.addEventListener('submit', function(event) {
console.log('Form is being submitted');
let book_id = document.getElementById("bookmark-input").value;
bookmark(book_id, count);
event.preventDefault();
});
Also I would recommend you to avoid as much as possible to insert PHP code inside your JavaScript code. It makes it hard to maintain, it does not make it clear to read neither... It can seems to be a good idea at first but it is not. You should always find a better alternative :)
For example you also have the data-* to pass data to an HTML tag via PHP (more about data-* attributes).