Check AND /OR use in twig file.

Check AND /OR use in twig file, look at the syntax..

For OR Syntax..

{% if content.field_machine_name|render or content.field_machine_name|render %}

        /* write comment here */

{% endif %}

For AND Syntax..
 

{% if content.field_machine_name|render and content.field_machine_name|render %}

        /* write comment here */

{% endif %} 

Note: If have any suggestions or issue regarding 'Check AND /OR use in twig file' then you can ask by comments.

Check twig file field is empty or not.

For check Twig file field is empty or not, look at the syntax..

 

{% if content.field_machine_name[0] is not empty %}
           /* write comment here */
{% else %}
          /* write comment here */
{% endif %}

                                 OR

{% if content.field_machine_name|render %}
       /* write comment here */
{% endif %}


Note: If have any suggestions or issue regarding 'Check twig file field is empty or not' then you can ask by comments.

Break line in between variables of twig file.

We can break the lines in between variables in twig file with add div syntax, please have a look.

<div>{{ content.field_machine_name }}</div>   //for insert line break 

 Note: If have any suggestions or issue regarding 'Break line in between variables of twig file' then you can ask by comments.

Twig file feature in Drupal 8.

We use '.tpl.php' extension for druapl 7 but now in case of drupal 8 extension is '.html.twig'.
Lets talk about twig file..

1. For node id in twig file syntax..  {{ node.id }}
2. For node title in twig file syntax.. {{ node.label }}
3. For node body in twig file syntax.. {{ node.body }} 
4. For node any field.. {{ content.field_machine_name[0] }} or {{ content.field_machine_name.0 }}

if else syntax..

{% if ... %}
            /* write comment here */
{% else %}
           /* write comment here */
{% endif %}

For create variable in twig file syntax..

 

{% set variable name = "variable value" %}  then write {{  variable name }} and use it easily.

 Note: If have any suggestions or issue regarding 'Twig file feature in Drupal 8' then you can ask by comments.

New features in Drupal 8.

I am going to start describe few new things in Drupal 8 in easy way.

Now in drupal 8 version uses Symfony few Components, rather than all of Symfony. If you want to check the list of use components in druapl 8. You can check in 'core/composer.json' file.

1. We will render/call all variables of twig file in double Curly Braces/Brackets, Syntax..  {{ write variable name here }}   

      2. For comment in twig file we have to use # keyword, Syntax..  

          {#{ write variable name here }#}   or   {#  commenting syntax  #}

 Note: If have any suggestions or issue regarding 'New features in Drupal 8' then you can ask by comments.