Why Drupal 8 Performance is better than Drupal 7?

Drupal 8 comes with Symfony framework, a high performing PHP framework with code security. Drupal 8 is faster than Drupal 7, here we have some points that can prove who is faster version in Drupal. 

1. Drupal 8 now turned on dynamic caching.
2. Drupal 8 turned on 6 week page caching for anonymous users. This makes Drupal 8 serving    anonymous user very fast.
3. Even logged in users can Benefit from performance improvement.
4. Drupal 8 does not send JavaScript to all pages, unless you need to use it.
5. Only place where Drupal 8 is slow in cold caching, if user is the first visitor of website in Drupal 8, it will be slower than Drupal 7 but because of cache improvement next time visitor will hit the page, it will be faster in Drupal 8.
6. Drupal 8 uses breakpoint media queries, which saves extra efforts to make a website responsive but in Drupal 7 does not use breakpoint media queries and has a different approach to manage how the site appears on different devices screens.
7. Drupal 8 uses Twig as a template engine. Twig is part of Symfony 2 framework and PHP based compiled template engine, however Drupal 7 uses the PHP template as default template engine and users create the templates by PHP code.
8. Symfony framework makes Drupal 8 stronger than Drupal 7 to develop secure and robust website or web applications.
9. Drupal 7 does not have powerful framework to manage its codebase. Developers still use Drupal 7 but its lack of framework features makes it hard to manage code.


Note: Why Drupal 8 Performance is better than Drupal 7?

How to replace function use in Twig template?

It's a simple way to use "Replace" function in twig file just go through simple method:

Syntax with example:                   

{#
*** replace '-' with '$' sign in vidyard ID ***
#}

{% set twig_content_variable = node.field_resources_vidyard_id.value %}    //field_resources_vidyard_id is are vidyard id field
{% set replace_value_var = '-' %}
{% set replace_with_value_var = '$' %}
{% if twig_content_variable %}
{% set vidyard_function_id = twig_content_variable|replace({ '-': '$' }) %}
{% endif %}







Note: How to replace function use in Twig template?

How to find text from URL in Twig Template drupal 8?

It is easy way to find any text in any string or url in a Twig template file, here is we have syntax structure for this problem, have a look.

Syntax:

                 {% set testvar = url('<current>') %}
                 {% if 'test' in testvar|render|render %}
                         <p>url contains "test"</p>
                 {% endif %}

Description: here we set a 'testvar' variable with contain of current page URL, and then we find a 'test' string in 'testvar' variable means in URL, if contain string then <p> tag data will print.

Example:
               {% set testvar = node.field_link.0.url %}
               {% if '/node/add' in testvar|render|render %}                               
               {% else %}
               <a href="{{ node.field_link.0.testvar }}">Read More</a>
               {% endif %} 

Description: here 'testvar' variable contain the value of that 'node.field_link.0.url' field. and we are checking/finding the '/node/add' string. if this will exist in then data will not display and in else case 'Read More' will display with that link.



Note: If have any suggestions or issue regarding 'How to find text from URL in Twig Template drupal 8?' then you can ask by comments.

How to Check the Condition in Twig Template?

It's easy process to check the condition of our 'id' exist or not for particular variable render time in Twig template.
Like we have to check any "Product type" exist or not and then variable call there, So we are giving an example:
Example 1:
{% if node.field_product_type.value not in ['0', '2', '4', '5', '7'] %}
 /*** print variable here ***/
{% endif %}

Description: Here our condition is, if Product type of node value is not in these id's ['0', '2', '4', '5', '7'], then our variable will show the result otherwise not.

Example 2:
{% set node_id = node.id %}
{% if node_id in ['216','217','9','1258'] %} 
 /*** print variable here ***/
{% endif %}

Description: Here our condition is, if node id of node is in these id's ['216','217','9','1258'], then our variable will show the result otherwise not.


Note: If have any suggestions or issue regarding 'How to Check the Condition in Twig Template?' then you can ask by comments.

Media entity fields render in drupal 8 Node Twig template.

If we want to load media entity fields on node twig template. It's easy to load media entity, Please have a look..

{# call to media entity fields on node twig #}

{% for key, item in node.field_document_entity_browser %} 
// This is the node field which is connect to media field `field_document_entity_browser`..
{% if node.field_document_entity_browser[key].entity %}
// here we are rendering media entity field which machine name is `field_capt2120`..                           
{{ node.field_document_entity_browser.entity.field_capt2120[key].value }}

// here we are rendering media entity image field which machine name is `field_media_image`..        
{%if item.entity %}
{% set media = item.entity %}
{% set file = media.field_media_image.entity %}
{% set uri = file_url(file.uri.value) %}
                              
<img src="{{ uri }}" alt="{{ media.name.value }}" />
                          
 {% endif %}                           
                                                                                     
 {% endif %}
  {% endfor %}



Note: If have any suggestions or issue regarding 'Media entity fields render in drupal 8 Node Twig template.' then you can ask by comments.  

Paragraph fields render in drupal 8 Node Twig template.

If we want to load paragraph entity fields on node twig template. It's easy to load paragraph entity, Please have a look..

{# call to paragraph entity fields on node twig #}

{{ node.field_professional_features.entity.field_professional_services_name.value }}
 // here `field_professional_features` is the content type field and `field_professional_services_name` is the related paragraph field..

{{ node.field_professional_features.entity.field_professional_services_summ.value }}
  // here `field_professional_features` is the content type field and `field_professional_services_summ` is the related paragraph field..

// here we are calling paragraph image field..

{% for key, image in node.field_professional_features %}
// here `field_professional_features` is the content type field..
{%if image.entity %}
{% set paragraph = image.entity %}
{% set file = paragraph.field_professional_services_imag.entity %}
 // here `field_professional_services_imag` is the related paragraph field..
{% set uri = file_url(file.uri.value) %}

<img src="{{ uri }}" alt="{{ paragraph.name.value }}" />

{% endif %}
{% endfor %} 



Note: If have any suggestions or issue regarding 'Paragraph fields render in drupal 8 Twig template.' then you can ask by comments.  

Replace any string or value in twig template variable.

If we want to Replace the value in twig template then we have an example and syntax, please have a look..
{#
    ****  replace '-' with '$' sign in vidyard ID ****  
#}

{% set twig_content_variable  = node.field_resources_vidyard_id.value  %}   // here we are applying on field_resources_vidyard_id field..
{% set replace_value_var      = '-' %}
{% set replace_with_value_var = '$' %}
{%if twig_content_variable %}
   {% set vidyard_function_id = twig_content_variable|replace({ '-': '$' }) %}
{% endif %}


Note: If have any suggestions or issue regarding 'Replace any string or value in twig template variable.' then you can ask by comments.