WordPress background article List settings article featured image (thumbnail) integrated version

functions.php Add the following code

/** * WordPress background article List settings article featured image (thumbnail) Integrated version * Plugin name:easy Thumbnail switcher*/classDoocii_easy_thumbnail_switcher { Public $add _new_str;  Public $change _str;  Public $remove _str;  Public $upload _title;  Public $upload _add;  Public $confirm _str;  Public function__construct () {$this-&GT;ADD_NEW_STR = __ (' Add '); $this-&GT;CHANGE_STR = __ (' Change '); $this-&GT;REMOVE_STR = __ (' Remove '); $this->upload_title = __ (' Upload featured image ')); $this->upload_add = __ (' OK '); $this-&GT;CONFIRM_STR = __ (' Are you sure? ')); Add_filter (' Manage_posts_columns ',Array($this, ' Add_column ' ) ); Add_action (' Manage_posts_custom_column ',Array($this, ' Thumb_column '), 10, 2 ); Add_action (' Admin_footer ',Array($this, ' Add_nonce ' ) ); Add_action (' Admin_enqueue_scripts ',Array($this, ' Scripts ' ) ); Add_action (' Wp_ajax_ts_ets_update ',Array($this, ' Update ' ) ); Add_action (' Wp_ajax_ts_ets_remove ',Array($this, ' Remove ' ) ); Add_image_size (' Ts-ets-thumb ', 75, 75,Array(' Center ', ' center ' ) ); }        /** * Security check*/     Public functionadd_nonce () {Global $pagenow; if($pagenow!== ' edit.php ' ) {            return; } Wp_nonce_field (' Ts_ets_nonce ', ' ts_ets_nonce ' ); }        /** * Load Script*/     Public functionScripts$pagenow ) {                if($pagenow!== ' edit.php ' ) {            return;        } wp_enqueue_media (); Wp_enqueue_script (' Doocii-ets-js ', Get_template_directory_uri (). '/js/script.js ',Array(' jquery ', ' media-upload ', ' Thickbox '), ' 1.0 ',true ); Wp_localize_script (' Doocii-ets-js ', ' ets_strings ',Array(            ' Upload_title ' =$this->upload_title, ' upload_add ' =$this->upload_add, ' confirm ' =$this-&GT;CONFIRM_STR,        ) ); }        /** * The action which is added to the post row actions*/     Public functionAdd_column ($columns ) {                $columns[' ts-ets-option '] = __ (' thumbnail '); return $columns; }        /** * Display column*/     Public functionThumb_column ($column,$id ) {                Switch($column ) {             Case' Ts-ets-option ':if(Has_post_thumbnail ()) {The_post_thumbnail (' Ts-ets-thumb ' ); Echo' <br> '; Echo sprintf(' <button type= "button" class= "Button-primary ts-ets-add" data-id= "%s" >%s</button> ", Esc_attr ($id),$this-change_str); Echo sprintf(' <button type= "button" class= "Button-secondary ts-ets-remove" data-id= "%s" >%s</button> ", Esc_attr ($id),$this-remove_str); } Else {                    Echo sprintf(' <button type= "button" class= "Button-primary ts-ets-add" data-id= "%s" >%s</button> ", Esc_attr ($id),$this-add_new_str); }                                 Break; }            }        /** * Ajax save update thumbnail*/     Public functionUpdate () {//Check whether all required data is set or not        if( !isset($_post[' Nonce ']) || !isset($_post[' post_id ']) || !isset($_post[' thumb_id ']) {Wp_die (); }                //Validation        if(!wp_verify_nonce ($_post[' nonce '], ' ts_ets_nonce ') ) {Wp_die (); }                $id=$_post[' post_id ']; $thumb _id=$_post[' thumb_id ']; Set_post_thumbnail ($id,$thumb _id ); EchoWp_get_attachment_image ($thumb _id, ' Ts-ets-thumb ' ); Echo' <br> '; Echo sprintf(' <button type= "button" class= "Button-primary ts-ets-add" data-id= "%s" >%s</button> ", Esc_attr ($id),$this-change_str); Echo sprintf(' <button type= "button" class= "Button-secondary ts-ets-remove" data-id= "%s" >%s</button> ", Esc_attr ($id),$this-remove_str);            Wp_die (); }        /** * After Ajax callback delete thumbnail image*/     Public functionRemove () {//Check If all required data is set or not        if( !isset($_post[' Nonce ']) || !isset($_post[' post_id ']) {Wp_die (); }                //Verify nonce        if(!wp_verify_nonce ($_post[' nonce '], ' ts_ets_nonce ') ) {Wp_die (); }                $id=$_post[' post_id ']; Delete_post_thumbnail ($id ); Echo sprintf(' <button type= "button" class= "Button-primary ts-ets-add" data-id= "%s" >%s</button> ", Esc_attr ($id),$this-add_new_str);            Wp_die (); }    }NewDoocii_easy_thumbnail_switcher ();

The following code is saved as script.js and saved to the subject name/js Directory

Visit: HTTP//your domain/wp-admin/edit.php can

(function($) {        "Use Strict"; if(typeofTs_ets = = = ' undefined ') {window.ts_ets= {}; Ts_ets.upload_frame=false; } $ (document). On (' Click ', ' Button.ts-ets-remove ',function() {ts_ets.tmp_id= $( This). Data (' ID '); Ts_ets.tmp_parent= $( This). Closest (' Td.ts-ets-option '); if( !confirm (ets_strings.confirm)) {            return; } $.ajax ({Url:ajaxurl, method:"POST", data: {action:' Ts_ets_remove ', Nonce: $ (' #ts_ets_nonce '). Val (), post_id:ts_ets.tmp_id}, Success:function(data) {if(Data! = ") {ts_ets.tmp_parent.html (data);            }            }        });        }); $ (document). Ready (function() {ts_ets.upload_frame=Wp.media ({title:ets_strings.upload_title, button: {text:ets_strings.upload_a DD,}, multiple:false        }); Ts_ets.upload_frame.on (' SELECT ',function() {ts_ets.selection= Ts_ets.upload_frame.state (). Get (' selection '); Ts_ets.selection.map (function(attachment) {if(attachment.id) {$.ajax ({Url:ajaxurl, method: 
    "POST", data: {action:' Ts_ets_update ', Nonce: $ (' #ts_ets_nonce '). Val (), post_id:ts_ets.tmp_id, thumb_id:attachment.id }, Success:function(data) {if(Data! = ") {ts_ets.tmp_parent.html (data);                }                        }                    });                    }            });            });        }); $ (document). On (' Click ', ' Button.ts-ets-add ',function(e) {e.preventdefault (); ts_ets.tmp_id= $( This). Data (' ID '); Ts_ets.tmp_parent= $( This). Closest (' Td.ts-ets-option '); if(ts_ets.upload_frame) {ts_ets.upload_frame.open ();    }            }); }) (jQuery);

WordPress background article List settings article featured image (thumbnail) integrated version