I have a views-view-unformatted.html.twig template working fine where I can print fields from a view of nodes.
Example: having i = 3, print row number 3 title
{{ rows[i]['content']['#row']._entity.title.0.value }} This view has also a working relationship with flag. I see it working in the view preview.
How can I print the flag link inside views-view-unformatted.html.twig?
Not being able to find better solution nor documetation, I built this working hack:
add a fake text field entity. IE: for articles: http://yoursite/admin/structure/types/manage/article/fields > Add field > Add text plain field
hook the view in a custom module:
function MYMODULE_views_pre_render(ViewExecutable &$view){ if( $view->id() == 'VIEWID' ){ foreach($view->result as $r) { // from https://www.drupal.org/comment/reply/295383/12504094 $node = $r->_entity; $flag_link = [ '#lazy_builder' => ['flag.link_builder:build', [ $node->getEntityTypeId(), $node->id(), 'FLAG', ]], '#create_placeholder' => TRUE, ]; $flag_link = render($flag_link); $r->_entity->set('field_fake_flag_field', $flag_link); //. } } } print (finally) your flag link in the twig template:
{{ rows[i]['content']['#row']._entity.field_fake_flag_field.0.value }}
Twig is cool. It takes a while, sometimes.
I used {{ fields.link_flag.content }} in a views-view-fields--some_view_name.html.twig and that worked for me
I have found this
{{ view.style_plugin.getField(KEY, 'FIELD_NAME') }} 
{{ rows[i]['content']['#row']._entity.flag_field_name.value }}? Replaceflag_field_namewith the actual field name of the flag field.{{ rows[i]['content']['#row']._entity.link_flag.value }}is not producing anything.{{ dump( rows[i]['content']['#row']._entity) }}that should list all the fields in the render array, then you can drill into the fields, and the link_flag should be listed there. Fields are usually prefixed withfield_. Maybe paste the output of the dump in the question if it's not too long.field_. I am using the flag module in 1 of my projects. I will try to replicate this case in my project and post when I find something.protected values -> array(10). I tried to reproduce this but I also find it more difficult to get flag values. Usually I make view blocks and render them in twig instead of using the view-unformatted template, and I use twig block template overrides to render the fields / content in the view. I can also suggest asking for a support request in the flag project page on Drupal.org, maybe someone can suggest another option there.