Change wp query depending on year selection - php

Question

Introduction
I have a blog where I am showing latest post within the last 365 days and only show 100 post. I also have the option for the user to select year (this is what im currently working on).
Question
How can I have it so when A user chooses a different year (from the selection) the query is set to show post from that year and remove the 100 post limit and show this is my blog page.
My Query
<?php
// gets info
$current_category = get_queried_object('post');
//$current_user =get_the_author_posts();
// the query
$wpb_all_query = new WP_Query(array(
'post_type' => 'post',
'post_status' => 'publish',
'cat' => $current_category->term_id,
// 'author' => $current_user,
// 'tag' => '',
'posts_per_page' => 100,
'date_query' => array(
array(
// 'year' => '2019',
'after' => '-365 days',
'column' => 'post_date',
)
)
));
My Selection (year)
<select style="top: -4px;"
class=" btn-link col-12"
name="archive-dropdown"
onChange='document.location.href=this.options[this.selectedIndex].value;'>
<?php wp_get_archives('type=yearly&format=option'); ?>
</select>
My Blog Page
<?php
require "settings.php";
if ($wpb_all_query->have_posts())
:while ($wpb_all_query->have_posts())
:$wpb_all_query->the_post();
?>
content
<?php endwhile; ?>
<?php endif; ?>
I was trying a statement in the query but could not see how to get year selected , but then if i set the year to a var depending on the option maybe that's better>?

Answer 1

This will give you all posts (no limit to 100), for the year 1999. Change $yearToLookFor to the year you need.
<?php
//here is from a $_GET parameter
$yearToLookFor = $_GET['year'];
// gets info
$current_category = get_queried_object('post');
//$current_user =get_the_author_posts();
// the query
$wpb_all_query = new WP_Query(array(
'post_type' => 'post',
'post_status' => 'publish',
'cat' => $current_category->term_id,
// 'author' => $current_user,
// 'tag' => '',
'date_query' => array(
array(
'year' => $yearToLookFor,
)
)
));
In this example, the year got taken from a url query, like this: https://yourwebiste.zyx/?year=1999