Content 2 JSON with custom kirby TAG

Kirby 3 Solved ✅
1

Hello,

I make a page on a website available as JSON. In this I use a kirby custom tag to include a structur field. now the data of the table is not created when the JSON is created. but in a normal template already. How can I solve this ?

content 2 JSON

<?php

$data = $pages->find('welcome-guide')->children()->published();
$json = [];

foreach ($data as $article) {

	$json[] = [
		'title' => (string)$article->title_on_page(),
		'text'  => (string)$article->richtext()->kt()

	];
}

echo json_encode($json);

kirby TAG

<?php
Kirby::plugin('st/table', [
    'tags' => [
        'table' => [
          'attr' =>[
            'table_name'
          ],
            'html' => function($tag) {
              $field = $tag->value;
              $html = '<table class="kirbytag-table">';
              $loop_counter = 0;
			foreach(page()->$field()->toStructure() as $table) 
			{
				$loop_counter++;
				if($loop_counter == 1):;
				$html .= '<tr>';
				$html .= '<th>';
				$html .= $table->col01();
				$html .= '</th>';
				$html .= '<th>';
				$html .= $table->col02();
				$html .= '</th>';
				$html .= '<th>';
				$html .= $table->col03();
				$html .= '</th>';
				$html .= '</tr>';
				endif;
				if($loop_counter >1):;
				$html .= '<tr>';
				$html .= '<td>';
				$html .= $table->col01();
				$html .= '</td>';
				$html .= '<td>';
				$html .= $table->col02();
				$html .= '</td>';
				$html .= '<td>';
				$html .= $table->col03();
				$html .= '</td>';
				$html .= '</tr>';
				endif;
			}
			$html .= '</table><br>';
			return $html;
            }
        ]
    ]
]);

thanks for reading

greetings perry

2

What do you get when you open that json representation in the browser?

3

valid JSON and no error message, but the table has no content: <table class="kirbytag-table"></table><br>

when displaying via template, the table is displayed

4

Then make sure that your field names are all correct.

5

the field names are correct, so i add the structure field via tag (table: table01)

and this is what my blueprint looks like

title: page
icon: page
pages: false

options:
  preview: false
  changeTemplate: true
  duplicate: false
  delete: true

columns:
  # main content
  main:
    width: 2/3
    sections:
      content:
        type: fields

        fields:
          title:
            label: Title
            type: text
          title_on_page:
            label: Titel
            type: text
          richtext:
            label: Text
            extends: fields/markdown_editor

          table01:
            label: table01
            type: structure
            style: table
            modalsize: small

            fields:
              col01:
                label: Col01
                type: text
              col02:
                label: Col02
                type: text
              col03:
                label: Col03
                type: text

          table02:
            label: table02
            type: structure
            style: table
            modalsize: small

            fields:
              col01:
                label: Col01
                type: text
              col02:
                label: Col02
                type: text
              col03:
                label: Col03
                type: text

          table03:
            label: table03
            type: structure
            style: table
            modalsize: small

            fields:
              col01:
                label: Col01
                type: text
              col02:
                label: Col02
                type: text
              col03:
                label: Col03
                type: text

          sidebar_images:
            label: Sidebar
            type: files
            width: 1/2
            size: large
            query: page.images

  # files
  sidebar:
    width: 1/3
    sections:
      files:
        headline: Files
        type: files
        layout: list
6

Well, theoretically, it should work.

I’d dump() some variables in the tag (and then output as standard array instead of json) to try and debug what’s wrong.

7

this is the raw content of the structur fields, can certain characters cause the problem?

col01: Train
  col02: Voie
  col03: Heure de départ
- 
  col01: 'RE --> Chaux-de-Fonds'
  col02: "1"
  col03: :20 / :47
- 
  col01: 'ICN --> Bâle'
  col02: "2"
  col03: :49
- 
  col01: 'ICN --> Zurich/St. Galles'
  col02: "3"
  col03: :17 / :46
- 
  col01: 'ICN --> (Lausanne)/Genève'
  col02: "5"
  col03: (:16) / :45
- 
  col01: 'RE --> Berne'
  col02: 6/7
  col03: :22 / :52"
8

it seems that if you use a custom tag in a json output, the forEach loop of the tag will never fire.

TAG

	'html' => function ($tag) {
				$field = $tag->value;
				$html = '<table class="kirbytag-table">';


				foreach (page()->$field()->toStructure() as $key =>  $table) {
9

I’d say the problem is your use of page() instead of $tag->parent()

10

thanks that was the solution! can you please explain to me why the parent element? I would like to refer to the structure field in the current page and not one level higher.

11

parent() refers to the parent of the tag, i.e. the page where the tag is used, not the parent of the page.

12

thanks for the explanation