Archive for February 2017

Home Archive for February 2017

Python is a widely used high-level programming language used for general programming Python allows programmers to express concepts in fewer lines of code than possible in languages such as C++ or Java. The language can be used to programs on both a small and large scale.Python’s popularity in general has been increasing over the years, not only in the areas of web development or software development, but also in the area of data science,aerospace,artificial intelligence,machine learning etc. ZenRays Technologies provides you with most practical and hands on knowledge of python and is one of the front runners for Best python Training courses in Bangalore,Gurgaon.

http://zenrays.com/course/pythondjango-training

The training methodologies offered at ZenRays are unique and involve a completely practical approach and unlike the traditional pen paper method of teaching at ZenRays we believe the best way to learn IT technology is by coding from the very first day. Hence as a part of our training methodology it is a must to get your own laptop and code from the very first day. ZenRays believes nothing can substitute quality when it comes to giving knowledge and hence at Zenrays you will be taught by leading industry consultants who have had more than 10+years of experience in their respective domains.This one of a kind training methodology makes ZenRays one of the best python Training Institute in Bangalore,Gurgaon.

Since the best way implement your knowledge is by putting it to use in real life zenrays also gives you a chance to be a part of a live real time application project which will let you test your skill and give you an exposure to an industry project.

The course content for python program is split into 4 modules consisting of basics of python,advanced python,object oriented python and a framework Django.

We offer an option of Live and interactive online sessions for people located outside Bangalore where the sessions will be taken live face to face over the internet with our consultant along with the regular batch.All the sessions are recorded live and the recordings will be given to you as life time access.

The popularity of python is ever increasing due to its easy to use and friendly interface and has found scope in various domains.The scope of a python developer are limitless with a few domains being aerospace,data science,artificial intelligence,automation,machine learning, image processing.The demand for well skilled python programmers is growing.It's used by NASA, Dropbox, Pinterest,Quora etc.

At ZenRays we offer 100% placement opportunities from our side,a letter of completion and letter experience upon successful completion of the course.

If you want more details please visit us:

www.zenrays.com Reach us at trainings@zenrays.com

Web development is a technology involved in developing a web site on the internet.Web development can range from developing a simple page of plain text to the further complex internet applications, electronic businesses, and social networking. Bangalore happens to be the IT hub of India and when it comes Best Web Development Training course in Bangalore ZenRays Technologies offers the most hands on and practical approach towards learning this powerful technology.

http://zenrays.com/web-development-course

The course content for modern web development program inculcates all the latest technologies in demand today which include HTML5,CSS3,Javascript,AngularJS powered by Google,Bootstrap,PHP along with a framework Laravel and a database MySQL.

With the increasing and growing use of Internet and development of new applications in sectors like mobile industry,e-commerce,gaming the demand for skilled modern web developers is only increasing and highly in demand and the scope to work as a modern web developers is in multiple domains.

At ZenRays we offer 100% placement opportunities from our side,a letter of completion and letter experience upon successful completion of the course.

If you want more details please visit us:

www.zenrays.com Reach us at trainings@zenrays.com

form_alter is basically the way we can change the defaults or behaviour of any form.

hook_form_alter(&$form, &$form_state, $form_id)

It performs alteration before rendering. It is also used to add form elements to the node form. The node object can be accessed at $form['#node'], when altering the node form.

$form: It is the nested array of form elements.

$form_state: A keyed array containing the current state of the form.

$form_id: String representing the name of the form itself.

Lets continue with an example of adding a content type. When you navigate to Structure >> Content type >> Add content type and scroll down you can find Display settings

By default, the value has been checked. Lets uncheck it by using form_alter in a module.
Create a folder in sites >> all >> module named as mymod. Inside that folder create two files mymod.info and mymod.module.
Include following lines of code in mymod.info

name = mymod
description = This description for mymod
core = 7.x

name : it is the name of the module.
description : it is the description for the module

core : It is the version of drupal

Include following lines of code in mymod.module

<?php
function mymod_form_alter(&$form, &$form_state, $form_id){
if($form_id == 'node_form'){
$form['display']['node_submitted']['#default_value'] = 0;
}
}

In the above code, default value will be set to 0 (i,e. uncheck) for the node id node_form

We can also change the description which is appearing below the check box by including the following lines

$form['display']['node_submitted']['#description'] = t("This is the description");

ZenRays provide the following to make you expert

zenrays providing drupal training in Bangalore

Fully practical and project-based sessions from first class.
Training by Experienced Consultants, not regular Trainers
Friendly and enthusiastic faculty to clear your doubts 24X7
Free Live project after the training to get you industry experience

If you want more details please visit us:

Zenrays.com Reach us at trainings@zenrays.com

A collection of files which defines the presentation layer is called theme. Lets continue with how to create a theme from scratch.

Step 1 : To create the folder structure.
Let us create folder for our new theme in sites/all/themes, folder should be given with a unique name without any spaces. We can also organize the folder by including sub-folders for images and CSS files.
Step 2 : Creating a .info file
.info file provides information of the theme. It is a text file with .info extensions. It should have the name of the theme followed with .info extension. For example themename.info. This file should contain

name - name of your theme
description - a description of the theme
version - version of Drupal
region - the block regions available.Inside square brackets, machine name of the region is included. E.g. regions[header_top_left]
stylesheets - CSS files in included. The media type will be included in the first set of bracket. E.g. stylesheets[all][]. The values are relative to theme directory.
scripts - any scripts required by template. The values are relative to theme directory

Below is the example .info file

name = Scholarly
description = A Bootstrap-based, responsive Drupal theme by <a href="http://www.morethanthemes.com/" target="_blank">More than (just) Themes</a>.
version = 2.1.1
core = 7.x

stylesheets[all][] = js/flexslider/flexslider.css
stylesheets[all][] = mdb/css/bootstrap.min.css
stylesheets[all][] = style.css

scripts[] = mdb/js/mdb.min.js
scripts[] = mdb/js/tether.min.js

regions[header_top_left] = Header Top Left
regions[header_top_right] = Header Top Right
regions[header] = Header

Step 3 : Template files
Themes are based on template files with the extension .tpl.php. These files contains the html for theme, as well as some variables that tell Drupal where to put things.
page.tpl.php - It is used to display the page. It does not contain doctype, head section but it contains the code for the page body. The default page.tpl.php file is contained in the system module.
html.tpl.php - It includes code for the structure of the document. It contains the doctype, the <head> section, and opening and closing <body> and <html> tags.
Creating page.tpl.php file
This file contains all the code for the main <body> section of your theme and consists of three elements:

The HTML mark-up
Region definitions
Variables for other content items

Lets start with basic structure

<div id="header">
</div>

<div id="wrapper">
 <div id="content">
 </div>

 <div id="sidebar">
 </div>
</div>

<div id="footer">
</div>

Step 4 : Creating Regions
Any part of your page that has to be editable in the Drupal interface (via Blocks) has to be a region. It includes header, right sidebar, content area, and footer and has to be introduced in the .info file first. Variables, including regions, are inserted using render arrays in drupal 7. Render array is a way of outputting the regions and other elements. The following code creates a conditional to check that the footer region has something in it, then prints out the contents

<?php if ($page['footer']): ?>    
<?php print render($page['footer']); ?>
<?php endif; ?>

In $page['footer'], footer must be the machine name. Here is the sample page.tpl.php file

 <div id="header">
    <a href="<?php print $front_page;?>">
      <img src="/<?php print $directory;?>/images/logo.png" alt="<?php print $site_name;?>" height="80" width="150" />
    </a>
 
    <?php if ($main_menu): ?>
      <?php print theme('links', $main_menu); ?>
    <?php endif; ?>

  </div>
 
  <div id="content">
    <?php print render($title_prefix); ?>
      <?php if ($title): ?><h1><?php print $title; ?></h1><?php endif; ?>
    <?php print render($title_suffix); ?>

    <?php print render($messages); ?>
    <?php if ($tabs): ?><div class="tabs"><?php print render($tabs); ?></div><?php endif; ?>
    <?php if ($action_links): ?><ul class="action-links"><?php print render($action_links); ?></ul><?php endif; ?>

    <?php print render($page['content']); ?>
  </div>

  <?php if ($page['sidebar_first']): ?>    
    <div id="sidebar">
      <?php print render($page['sidebar_first']); ?>
    </div>
  <?php endif; ?>  

  <div id="footer">
    <?php if ($page['footer']): ?>    
      <?php print render($page['footer']); ?>
    <?php endif; ?>  
  </div>

If you want to change the block appearance, then we can make changes in block.tpl.php. Navigate to modules >> block >> block.tpl.php. Copy block.tpl.php and paste it in your newly created theme and edit. Lets continue with an example of changing the title of the block. Lets give a class to <h2> tag in block.tpl.php

<?php print render($title_prefix); ?>
<?php if ($block->subject): ?>
<h2 class="title"<?php print $title_attributes; ?>><?php print $block->subject ?></h2>
<?php endif;?>
<?php print render($title_suffix); ?>

Here h2 tag has a class named as title. Next step is to specify styling for title. Go to your theme's CSS file and add the following lines of code

.title{
  text-decoration: underline;
  color: blue;
  font-family: Georgia;
  font-size: 20px;
  font-style: italic;
}

Now the title of the block will appear in blue color.
If you want to change the appearance of comments, we can make in comment.tpl.php. Navigate to modules >> comment >> comment.tpl.php. Copy comment.tpl.php and place it in your theme. Lets continue with an example of moving submitted information below the comment. In comment.tpl.php place the submitted class below the content. Below is the code snippets to do so.

<div class="<?php print $classes; ?> clearfix"<?php print $attributes; ?>>
<?php print $picture ?>
<?php if ($new): ?>
<span class="new"><?php print $new ?></span>
<?php endif; ?>
<?php print render($title_prefix); ?>
<h3<?php print $title_attributes; ?>><?php print $title ?></h3>
<?php print render($title_suffix); ?>
<div class="content"<?php print $content_attributes; ?>>
<?php
hide($content['links']);
print render($content);
?>
<div class="submitted">
<?php print $submitted; ?>
</div>
<?php if ($signature): ?>
<div class="user-signature clearfix">
<?php print $signature ?>
</div>
<?php endif; ?>
</div>
<?php print render($content['links']) ?>
</div>

After clearing the cache, the submitted information will appear below the comment. Finally navigate to Appearance and in newly created theme section, select enable and set as default option.

ZenRays provide the following to make you expert

zenrays providing drupal training in Bangalore