Profile: dianaM-4

Problem:
Q1) Filter Views query by URL parameter
Q2) Order the Views query by custom field value number with PHP codes

Solution:
A1)

if (in_array('myCPT', (array)$wp_query->get('post_type')) && $_GET['URL-para-name'] == 'myParameter') {
...
}

replace "URL-para-name" with the URL parameter name, and repleace "myParameter" with the specific value

A2) modify the PHP codes, this line, from:
mt1.meta_value ASC
To:
mt1.meta_value+0 ASC

Relevant Documentation:

Problem:
Setup the default value of URL parameter "wpv_view_count" in Views parameter search form.
Solution:
1) add below codes into theme/functions.php:

add_shortcode('add_wpv_view_count', 'add_wpv_view_count_func');
function add_wpv_view_count_func($atts, $content){
    $atts = shortcode_atts( array(
        'wpv_view_count' => '147',
        'url_param' => 'wpv_view_count',
    ), $atts);
    if(!isset($_GET[$atts['url_param']]) || $_GET[$atts['url_param']] == ''){
        $_GET[$atts['url_param']] = $atts['wpv_view_count'];
    }
    return;
}

2) add above shortcode just before the view's shortcode [wpv-view ....]
like this:
[add_wpv_view_count][wpv-view name="auslobungen-archiv-filter" orderby="id-projekt" order="asc"]
Relevant Documentation: