Proposal for Code Modification to Support Nested Entity Chains in PDF Templates

[dimyy]

I suggest adding a data depth parameter to enable pulling a chain of related entities when printing to PDF and to support loops through nested references.

Example:

List of tariff points: {{serviceTariffsIds}}
{{#each serviceTariffs}}
   Tariff point: {{name}}
   Type in tariff point: {{serviceType.name}}
   Scope of work in tariff point {{serviceType.serviceScopesIds}}

   {{#each serviceType.serviceScopes}}
      serviceScopeName:{{name}}
   {{/each}}
{{/each}}

For this, I suggest fixing three places in the code: replace {1} with {2}

$list[] = $this->getDataFromEntity($item, $skipLinks, $level + 1); ---|--- $list[] = $this->getDataFromEntity($item, $skipLinks, $level + 1, $template);

https://github.com/espocrm/espocrm/blob/7a451bd498e35e61479071d6b53bbe238ac432ac/application/Espo/Core/Htmlizer/Htmlizer.php#L273

$data[$relation] = $this->getDataFromEntity($relatedEntity, true, $level + 1); ---|--- $data[$relation] = $this->getDataFromEntity($relatedEntity, $level>5, $level + 1, $template);

https://github.com/espocrm/espocrm/blob/7a451bd498e35e61479071d6b53bbe238ac432ac/application/Espo/Core/Htmlizer/Htmlizer.php#L430

mb_stripos($template, '{{#each ' . $relation . '}}') !== false ---|--- (preg_match('/{{#each.*' . preg_quote($relation, '/') . '.*}}/i', $template))

https://github.com/espocrm/espocrm/blob/7a451bd498e35e61479071d6b53bbe238ac432ac/application/Espo/Core/Htmlizer/Htmlizer.php#L488