WordPress | Disable posts auto saving

To disable WordPress autosaving function, simply open your functions.php file and paste the following function

<?php function disable_auto_saving_post(){ wp_deregister_script('autosave'); } add_action('wp_print_scripts', 'disable_auto_saving_post');

WordPress | Automatically Insert Content After Each WordPress Post or Page

For example, on all the our posts and pages, we have an email subscription box. There are several ways to add content to your post, without having to do so manually

Most efficient way is using a filter to add content to your post content

<?php define("MY_FIRST_PLUGIN_DIR", plugin_dir_path(__FILE__)); add_filter('the_content', 'my_the_content'); function my_the_content($c) { if (!is_admin() && !is_feed() && (is_single() || is_page())) { global $post; $allow = !is_null($post) && property_exists($post, "post_type") && in_array($post->post_type, array('post', 'page')); if ($allow) { ob_start(); include MY_FIRST_PLUGIN_DIR . "templates/page_content.php"; $content = ob_get_contents(); ob_end_clean(); $c = $c . $content; } } return $c; }

Wordpress create table on Plugin activation if not exists

<?php global $wpdb; $table1 = $wpdb->prefix . "my_table"; if($wpdb->get_var( "show tables like '$table1'" ) != $table1) { $sql = "CREATE TABLE `". $table1 . "` ( "; $sql .= " `post_id` BIGINT NULL, "; $sql .= " `field1` VARCHAR(250) NULL, "; $sql .= " `field2` VARCHAR(250) NULL, "; $sql .= " INDEX `index_by_post_id` (`post_id`) "; $sql .= ") ENGINE=MyISAM DEFAULT CHARSET=latin1 ; "; require_once( ABSPATH . '/wp-admin/includes/upgrade.php' ); dbDelta($sql); }

GRAILS > FUNCTIONALITY AFTER TRANSACTION COMMITTED

So the problem is when we working on grails project with hibernate transaction to manage data, we do not know when actually transaction committed or not. But sometimes we have to wait until current transaction finally committed. Because unless transaction committed, this data will not available for other transactions. Below is a sample project showing how to notified or when actually current transaction committed. Its some wired way but its working.

THIS PROJECT FOR DEMONSTRATE HOW TO DO SOME ADDITIONAL WORK AFTER AN TRANSACTION COMMITED 1. First setup DataSource.groovy 2. Add *mavenRepo "https://oauth.googlecode.com/svn/code/maven"* in *repositories* to BuildConfig.groovy 3. Add below dependencies to *dependencies* in BuildConfig.groovy compile "org.springframework:spring-orm:$springVersion" runtime 'mysql:mysql-connector-java:5.1.29' runtime 'org.springframework:spring-test:4.0.5.RELEASE' 4. Add a controller named *HomeController.groovy* 5. Add a service named *HomeService.groovy* 6. Add a domain named *Home.groovy* MOST IMPORTANT PARTS: 7. Add below groovy files named *org.codehaus.groovy.grails.orm.hibernate.GrailsHibernateTransactionManager.groovy* named *org.codehaus.groovy.grails.orm.hibernate.TransactionStatus.groovy* named *org.codehaus.groovy.grails.orm.support.GrailsTransactionTemplate.groovy* under *src/groovy* 8. You are done! See *HomeService.groovy* to see how you can use this feature in Grails project.

package org.codehaus.groovy.grails.orm.hibernate import groovy.transform.CompileDynamic import org.hibernate.FlushMode import org.springframework.orm.hibernate4.HibernateTransactionManager import org.springframework.transaction.TransactionDefinition import org.springframework.transaction.support.DefaultTransactionStatus class GrailsHibernateTransactionManager extends HibernateTransactionManager { @Override protected void doBegin(Object transaction, TransactionDefinition definition) { super.doBegin transaction, definition if (definition.isReadOnly()) { setFlushModeManual(transaction) } } @CompileDynamic protected void setFlushModeManual(transaction) { transaction.sessionHolder?.session?.flushMode = FlushMode.MANUAL } @Override protected DefaultTransactionStatus newTransactionStatus(TransactionDefinition definition, Object transaction, boolean newTransaction, boolean newSynchronization, boolean debug, Object suspendedResources) { return new TransactionStatus(super.newTransactionStatus(definition, transaction, newTransaction, newSynchronization, debug, suspendedResources)) } @Override protected void doCommit(DefaultTransactionStatus status) { super.doCommit(status) status.triggerCommitHandlers() } }

BELOW IS SAMPLE OUTPUT

package com.pritom import grails.transaction.Transactional import org.codehaus.groovy.grails.orm.hibernate.TransactionStatus @Transactional class HomeService { void saveEntity() { TransactionStatus.current.onCommit { println("YES!!! TRANSACTION COMMITTED SUCCESSFULLY!!!") println("HOME COUNT ${Home.count()}") } Home home = new Home() home.name = "House #${Home.count() + 1}" home.addreess = "Lane ${Home.count() + 1}, Dhaka" home.save() } }

2019-02-08 11:33:55,048 [http-bio-8080-exec-1] DEBUG hibernate.SQL - select count(*) as y0_ from home this_ Hibernate: select count(*) as y0_ from home this_ 2019-02-08 11:33:55,050 [http-bio-8080-exec-1] DEBUG hibernate.SQL - select count(*) as y0_ from home this_ Hibernate: select count(*) as y0_ from home this_ 2019-02-08 11:33:55,053 [http-bio-8080-exec-1] DEBUG hibernate.SQL - insert into home (version, addreess, name) values (?, ?, ?) Hibernate: insert into home (version, addreess, name) values (?, ?, ?) 2019-02-08 11:33:55,054 [http-bio-8080-exec-1] TRACE sql.BasicBinder - binding parameter [1] as [BIGINT] - [0] 2019-02-08 11:33:55,054 [http-bio-8080-exec-1] TRACE sql.BasicBinder - binding parameter [2] as [VARCHAR] - [Lane 5, Dhaka] 2019-02-08 11:33:55,054 [http-bio-8080-exec-1] TRACE sql.BasicBinder - binding parameter [3] as [VARCHAR] - [House #5] YES!!! TRANSACTION COMMITTED SUCCESSFULLY!!! 2019-02-08 11:33:55,130 [http-bio-8080-exec-1] DEBUG hibernate.SQL - select count(*) as y0_ from home this_ Hibernate: select count(*) as y0_ from home this_ HOME COUNT 5

You can use multiple TransactionStatus.current.onCommit, each will be called one after one.

You can download sample project from here

GitHub project link

Required JAR file to get this working (if dependecny failed)

GRAILS : Rendering Groovy GSP Code From A String | Grails – Rendering a Template from a String | Render Grails template from external source

package com.pkm.utils

import grails.util.Holders
import groovy.text.Template
import org.codehaus.groovy.grails.web.pages.GroovyPagesTemplateEngine
import org.springframework.core.io.ByteArrayResource
import org.springframework.web.context.request.RequestContextHolder

/**
 * Created by pritom on 29/11/2017.
 */
class InvoicePdfUtils extends UtilsBase {
    static def test() {
        GroovyPagesTemplateEngine engine = Holders.applicationContext.getBean(GroovyPagesTemplateEngine)
        StringWriter stringWriter = new StringWriter()

        String content = "CONTENT-\${a}--\${b.none?.none ?: 'None'}-MINE-XXX " +
                "<ui:serverURL/> <g:if test='true'>True</g:if> HERE??? YES ME IS HERE, ".toString()
        Map model = [a: '10', b: [:]]

        String pageName = engine.getCurrentRequestUri(RequestContextHolder.getRequestAttributes().request) // /grails/test.dispatch
        Template template = engine.createTemplate(new ByteArrayResource(content.getBytes("UTF-8"), pageName), pageName, true)
        Writable renderedTemplate = template.make(model)
        renderedTemplate.writeTo(stringWriter)

        println("Request-path=${engine.getCurrentRequestUri(RequestContextHolder.getRequestAttributes().request)}")
        println(stringWriter.toString())
    }
}

This code block will take input from yourself and then parse as a GSP parser and return output as String.

https://little418.com/2009/11/rendering-groovy-gsp-code-from-a-string.html

Try catch not working Laravel raw queries | How to properly catch PHP exceptions (Laravel 5.X) | Why try catch not work in Laravel

Make sure you're using your namespaces properly. If you use a class without providing its namespace, PHP looks for the class in the current namespace. Exception class exists in global namespace, so if you do that try/catch in some namespaced code, e.g. your controller or model, you'll need to do catch(\Exception $e) to catch all your exceptions:  

try {
  //code causing exception to be thrown
}
catch(\Exception $e) {
  //exception handling
}

If you do it like this there is no way to miss any exceptions. Otherwise if you get an exception in a controller code that is stored in App\Http\Controllers, your catch will wait for App\Http\Controllers\Exception object to be thrown.

Laravel 5 Check if request is ajax request | Ajax request validation

<?php
use Illuminate\Support\Facades\Request;

return Request::ajax(); /* True | False */