I'm using the flot module to create some graphs in Drupal. Generically it is working pretty well. However I have come across an issue which is more general.

I am defining a settings array, which works for most things, however some flot settings allow for anonymous functions

  xaxis: {
    transform: function (v) { return Math.log(v); },
    inverseTransform: function (v) { return Math.exp(v); }
  }

how could I encode this in php so that it will be output correctly? the flot module uses drupal_to_js() I can't put it outside of quotes as php will try to interpret it. If I put it inside quotes it will be treated as a string.

From my googleing it looks like json_encode() also doesn't support this.

edit to try to explain more

Drupal_to_js takes a php structure and transposes it to javascript

<?php
  $top = array(
    'a_string' => 'A string will convert fine',
    'a_number' => 123 // as will a number,
    'an_array' => array('a' => 'nested arrays work fine too'),
  );

This will be transposed to something like

 [ a_string: 'A string will convert fine', a_number: 123 ...

I want to transpose a function

<?php
  $top = array(
    'a_string' => 'function (v) { return Math.log(v); }',

Will give me the string 'function (v) { return Math.log(v); }'

<?php
  $top = array(
    'a_string' => function (v) { return Math.log(v); },

Will give a php parse error (and so it should).

I want the text in the string to be used as a JS literal. But I don't think it can be done.

Has anyone found a good way round this? I could output some raw js. but then I will loose a lot of functionality.

I'm using the flot module to create some graphs in Drupal. Generally, it is working pretty well. However, I have come across an issue which is more general.

I am defining a settings array, which works for most things, but some flot settings allow for anonymous functions:

  xaxis: {
    transform: function (v) { return Math.log(v); },
    inverseTransform: function (v) { return Math.exp(v); }
  }

How could I encode this in PHP so that it will be output correctly? The flot module uses drupal_to_js(), and I can't put it outside of quotes as PHP will try to interpret it. If I put it inside quotes it will be treated as a string.

From my googleing it looks like json_encode() also doesn't support this.

A little more explanation: drupal_to_js() takes a PHP structure and transposes it to JavaScript.

  $top = array(
    'a_string' => 'A string will convert fine',
    'a_number' => 123 // as will a number,
    'an_array' => array('a' => 'nested arrays work fine too'),
  );

This will be transposed to something like

 [ a_string: 'A string will convert fine', a_number: 123 ...

I want to transpose a function; the following code will give me the string 'function (v) { return Math.log(v); }'.

  $top = array(
    'a_string' => 'function (v) { return Math.log(v); }',
  );

The following code will give me a PHP parse error (as it should be).

  $top = array(
    'a_string' => function (v) { return Math.log(v); },
  );

I want the text in the string to be used as a JavaScript literal, but I don't think it can be done.

Has anyone found a good way round this? I could output some raw JavaScript, but then I will lose a lot of functionality.

I'm using the flot module to create some graphs in Drupal. Generically it is working pretty well. However I have come across an issue which is more general.

I am defining a settings array, which works for most things, however some flot settings allow for anonymous functions

  xaxis: {
    transform: function (v) { return Math.log(v); },
    inverseTransform: function (v) { return Math.exp(v); }
  }

how could I encode this in php so that it will be output correctly? the flot module uses drupal_to_js() I can't put it outside of quotes as php will try to interpret it. If I put it inside quotes it will be treated as a string.

From my googleing it looks like json_encode() also doesn't support this.

Has anyone found a good way round this? I could output some raw js. but then I will loose a lot of functionality.

I'm using the flot module to create some graphs in Drupal. Generically it is working pretty well. However I have come across an issue which is more general.

I am defining a settings array, which works for most things, however some flot settings allow for anonymous functions

  xaxis: {
    transform: function (v) { return Math.log(v); },
    inverseTransform: function (v) { return Math.exp(v); }
  }

how could I encode this in php so that it will be output correctly? the flot module uses drupal_to_js() I can't put it outside of quotes as php will try to interpret it. If I put it inside quotes it will be treated as a string.

From my googleing it looks like json_encode() also doesn't support this.

edit to try to explain more

Drupal_to_js takes a php structure and transposes it to javascript

<?php
  $top = array(
    'a_string' => 'A string will convert fine',
    'a_number' => 123 // as will a number,
    'an_array' => array('a' => 'nested arrays work fine too'),
  );

This will be transposed to something like

 [ a_string: 'A string will convert fine', a_number: 123 ...

I want to transpose a function

<?php
  $top = array(
    'a_string' => 'function (v) { return Math.log(v); }',

Will give me the string 'function (v) { return Math.log(v); }'

<?php
  $top = array(
    'a_string' => function (v) { return Math.log(v); },

Will give a php parse error (and so it should).

I want the text in the string to be used as a JS literal. But I don't think it can be done.

Has anyone found a good way round this? I could output some raw js. but then I will loose a lot of functionality.