Call PHP function from Twig template

Question

I have a function in my controller that returns array of entities so in my twig template I do this to iterate over elements      for groupName  entity in items         lt ul gt           lt ul gt                 for element in entity                     lt li gt    element getLabel    lt  li gt                   lt li gt  lt input type  text  name  detail    element getId      id  pd    element getId       gt  lt input type  text  name  price    element getId      id  pd price    element getId       gt  lt input type  text  name  stock    element getId      id  pd stock    element getId       gt  lt  li gt                 endfor             lt  ul gt       lt  ul gt     endfor      In my controller I have also this PHP function   private function DetailCombination  arr   level   amp  result   curr   array          for   i   0   i  lt  count  arr    i               new   array merge  curr  array  arr  i             if   level    1                sort  new               if   in array  new   result                      result      new                          else               combinations  arr   level - 1   result   new                       I can call it in this way   for   i   0   i  lt  count  arr    i           this- gt DetailCombination  arr   i   1   result         TEST foreach   result as  arr        echo join       arr      lt br gt        It s possible access to the PHP function from Twig template in order to get all the possible combinations of elements in entity  How      UPDATE     This is the function that returns entities processed after by Twig Template   private function getVariations  category id         items   array          em    this- gt getDoctrine  - gt getManager         entityCategory    em- gt getRepository  CategoryBundle Category  - gt find  category id        foreach   entityCategory- gt getProductDetails   as  entity            if   entity- gt getToProduct      1                foreach   entity- gt getDetailGroup   as  group                    if   array key exists  group- gt getName     items                          items   group- gt getName      array                                        items   group- gt getName          entity                                      return  items

User · Answer

There is already a Twig extension that lets you call PHP functions form your Twig templates like:

Hi, I am unique: {{ uniqid() }}.

And {{ floor(7.7) }} is floor of 7.7.

See official extension repository.

User · Answer

Its not possible to access any PHP function inside Twig directly    What you can do is write a Twig extension  A common structure is  writing a service with some utility functions  write a Twig extension as bridge to access the service from twig  The Twig extension will use the service and  your controller can use the service too   Take a look  http   symfony com doc current cookbook templating twig extension html  Cheers

User · Answer

You can check your all defined function by    arr   get defined functions    print r  arr     this will give you array of all functions in if your function exist in it you can use it like        user myfunction   parameter

User · Answer

I am surprised the code answer is not posted already  it s a one liner    You could just    categeory id   getVariations     It s a one-liner      twig- gt addFilter  getVariations   new Twig Filter Function  getVariations

User · Answer

While I agree with the comments about passing in variables from your controller you can also register undefined functions when setting up the twig environment   twig- gt registerUndefinedFunctionCallback function   name               security          allowed   false          switch   name                   example of calling a wordpress function             case  get admin page title                    allowed   true                  break                     if   allowed  amp  amp  function exists  name                 return new Twig Function Function  name                      return false            This is from the Twig recipe page   Haven t tried calling a function on an object as the original question requested

User · Answer

If you really know what you do and you don t mind the evil ways  this is the only additional Twig extension you ll ever need   function evilEvalPhp  eval   args   null         result   null      eval  eval       return  result

User · Answer

I know this is an old thread  But with symfony 3 3 I did this      render controller       AppBundle  Controller  yourController  yourAction          Symfony docs

User · Answer

This worked for me  using Slim Twig-View    twig- gt getEnvironment  - gt addFilter     new  Twig Filter  md5   function  arg   return md5  arg          This creates a new filter named md5 which returns the MD5 checksum of the argument

[symfony] Call PHP function from Twig template

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