CODEWITHSUNDEEP
symfonytwig
leva
leva

Reputation: 37

Set Variable only get the last value in a loop in Symfony Twig

I am very new in Symfony and I have a problem in my twig. I just don't know how to do it :( 

 {% set trans_number = '' %}
   {% for tran in trans %}
     {% set trans_number = tran.transNumber %}
       {{dump(trans_number)}}
   // this is what I get when dumping inside the loop: string(10) "1073110793" string(10) "1073145793" string(12) "646721454679"
   {% endfor %}

But when I tried to dump it outside the loop:

    {% set trans_number = '' %}
   {% for tran in trans %}
     {% set trans_number = tran.transNumber %}
   {% endfor %}
  {{dump(trans_number)}}
  // I get only the last value string(12) "646721454679"

Now my question is, how can I access all the values assigned to the trans_number outside the loop? Thanks in advance.

Upvotes: 0

Views: 907

Answers (2)

Marcel Burkhard
Marcel Burkhard

Reputation: 3523

For people looking for the answer to the question in the title of the question:

You could use the last Filter

Example:

{{ dump( (trans|last) ) }}

Source: http://twig.sensiolabs.org/doc/filters/last.html

Upvotes: 0

sjagr
sjagr

Reputation: 16512

You're correct with the variable scope and handling the scope access by declaring trans_number before the loop, however you're misinterpreting how set works with Twig, or just how variables work.

When you use set trans_number = tran.transNumber, you're just assigning a new value to the trans_number variable each time. When you move the dump outside of the loop, you're no longer dumping the new value of trans_number through each iteration.

If you wish to build a list of values into trans_number, then you need to initialize trans_number as a list and append to it through each iteration of the for loop:

{% set trans_number = [] %}
{% for tran in trans %}
    {% set trans_number = trans_number|merge([tran.transNumber]) %}
{% endfor %}
{{dump(trans_number)}}

Upvotes: 2

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