I'm sure the sentence 'There is nothing impossible in Drupal' is not something unfamiliar for your ears. This blog post is a proof of this statement. Here we, the Propeople Drupal Digital Agency team, will make an overview of the Organic Groups module, another useful and powerful module that is appreciated by many Drupal users and developers.First of all: OG – what is this all about? I think the best example would be Facebook Groups. Have you heard about Facebook Groups? I bet you have. I

Software testing and especially quality assurance has become a very important stage in developing high class products. It may sound funny but testing is a form of predicting what actions the end user shall perform or what combination should be used to see if a product can perform well in unpredictable situations. The Propeople Drupal development team considers that the simplest tool used to perform a so called “foretell” is a Test Case.A test case is a set of inputs, conditions and

While I was working on a project here at Propeople, I had a requirement to limit the options for an exposed filter in order to get only options that will give some results. Unfortunately Views don’t provide this kind of functionality.Let's start with an example. I have a Content Type called "People" which has a Term Reference select list. Generally speaking we have to alter the “views_exposed_form”.Follow the next 3 steps:1. Create a custom module and implement hook_form_alter

There have been a lot of mentioning that Drupal 8 is using Annotations. In this article I will dive in how Drupal uses them and how to leverage Annotations mechanism yourself.In brief, annotations are blocks of comments that are parsed and used as a source of information about something. For example in Drupal 8, plugins system Annotations are used to describe plugins. They are alternatives to our TYPE_hook_info hooks and are now widely used.For example: How does this work technically?For parsin

Propeople developers have analyzed the slow page loading problem and applied the JavaScript performance best practices in a lot of cases.Intro to performanceOut in the wild there are millions of sites. With a certain degree of probability some of them provide similar services for your customers. In this vast variety of competitors on the market we have to fight for all our users.From one point of view, we need to provide a nice UI, fancy images and great content for the users. On the other hand

Nowadays Drupal Services support becomes stronger and more flexible. The main functionality is provided by Services module. You can find more than 1300 modules tagged with “services” that is more than enough.Out of the box services provides just REST/RCP server and pure documentation of available options. But sometimes we need to build Client instance to retrieve data from another Drupal env that provides for example RESTful server. You have some ways to implement it:Custom handmade

At a first glance configuring and managing menus in Drupal 7 looks pretty straightforward. When requirements get a bit more subtle and demanding, often a situation arises where the core Drupal menu functionality is not enough to handle the task at hand. We have identified some frequently encountered troublesome situations and in this post I will share the standard solutions we use to solve them. We all know how powerful Drupal is thanks to the community behind, the contributed modules and the h

Have you ever thought that Drupal's markup is bad and could be better? I'm sure you did. And now thanks to the Twig Initiative we are starting to move in that direction. Introducing the Dream markup!#dreammarkupOne of the goals of the Twig and Mobile Initiatives is to improve the markup in core. Though most of initiative participants are currently involved in converting templates to Twig, but we still can start working on markup for the completed templates or make markup suggestions.PrinciplesD

On April 19th-20th, I attended DrupalCamp São Paulo 2013. The event, which was born from the ashes of the cancelled DrupalCon São Paulo, was held on IME-USP (University of São Paulo), and had around 250 people from the whole country, and some from Argentina, Peru and Uruguay.During 35 talks, a wide variety of topics were followed closely by interested developers, business people and students, from Sales to Technical, E-commerce to Mobile. A growing community!Propeople was o

Sometimes when we use third party libraries (for example Symfony components) we need to take care about class auto-loading. When the files number is small we can add them to our module's .info file. But what if the files number is big? Lately, I was working with the Guzzle Module and discovered a very nice way to provide information to Composer Autoload about folder with your classes files. After installing the Guzzle module we have a new autoloader (ClassLoader). In order to use it in our cust

Sometimes when we use third party libraries (for example Symfony components) we need to take care about class auto-loading. When the files number is small we can add them to our module's .info file. But what if the files number is big? Lately, I was working with the Guzzle Module and discovered a very nice way to provide information to Composer Autoload about folder with your classes files. After installing the Guzzle module we have a new autoloader (ClassLoader). In order to use it in our cust

The best practices of writing semantic markup for back- and front-end developers.As a Drupal developer you probably love custom code. When doing any custom form / block / view there is often a need of writing custom markup and inserting text / variables manually. And the best way to write the markup semantic and readable can be unclear.Drupal handles very well on rendering all the html for you, in a predictable way. The way Drupal deals with it is not perfect, but the markup it produces is sema

我们国家有关文献记载的最早生物武器是日本在侵华战争中使用的鼠疫菌、霍乱菌以及炭疽菌，1940～1944年，日本帝国主义曾在我国浙江、湖南、

而我们的教育部，设立的课程基本全盘西化，分科式的教育，就是彻底的西化。因为我们中国文化是讲究天地和谐的整体文化，从小读诵《四

国防：事实上，我们国家的国防的力量还是不错的，之所以不错，是因为这也是从教训中得来的成果。同为社会主义国家，我们建国后苏联派