README

Server-side implementation sample for the Editor.js. It contains data validation, HTML sanitization and converts output from Editor.js to the Block objects.

Installation

To install lib use composer:

composer require codex-team/editor.js:dev-master

Guide

Add this line at the top of your PHP script

use \EditorJS\EditorJS;

this line allows you to get editors class that has the following method:

getBlocks - return array of sanitized blocks

Basic usage

You can get data from editor and send as param to editor's server validator like

try {
    // Initialize Editor backend and validate structure
    $editor = new EditorJS( $data, $configuration );
    
    // Get sanitized blocks (according to the rules from configuration)
    $blocks = $editor->getBlocks();
    
} catch (\EditorJSException $e) {
    // process exception
}

Editor.js constructor has the following arguments:

$data — JSON string with data from CodeX Editor frontend.

$configuration — JSON string with CodeX Editor tools configuration (see an example in the following paragraph).

Configuration file

You can manually configure validation rules for different types of Editor.js tools (header, paragraph, list, quote and other). You can also extend configuration with new tools.

Sample validation rule set:

{
  "tools": {
    "header": {
      "text": {
        "type": "string",
        "required": true,
        "allowedTags": "b,i,a[href]"
      },
      "level": {
        "type": "int",
        "canBeOnly": [2, 3, 4]
      }
    }
  }
}

Where:

tools — array of supported Editor.js tools.

header — defines header tool settings.

text and level — parameters in header tool structure.

text is a required string, which will be sanitized except b, i and a[href] tags.

level is an optional integer that can be only 0, 1 or 2.

allowedTags param should follow HTMLPurifier format.

There are three common parameters for every block:

1. type (required) — type of the block

1. allowedTags (optional) — HTML tags in string that won't be removed

Other values are allowed according to the HTMLPurifier format.

Example:

"paragraph": {
    "text": {
        "type": "string",
        "allowedTags": "i,b,u,a[href]"
    }
}

1. canBeOnly (optional) — define set of allowed values

Example:

"quote": {
      "text": {
        "type": "string"
      },
      "caption": {
        "type": "string"
      },
      "alignment": {
        "type": "string",
        "canBeOnly": ["left", "center"]
      }
    }

Short settings syntax

Some syntax sugar has been added.

Tool settings can be a string. It defines tool's type with default settings.

"header": {
  "text": "string",
  "level": "int"
}

It evaluates to:

"header": {
  "text": {
    "type": "string",
    "allowedTags": "",
    "required": true
  },
  "level": {
    "type": "int",
    "allowedTags": "",
    "required": true
  }
}

Tool settings can be an array. It defines a set of allowed values without sanitizing.

"quote": {
  "alignment": ["left", "center"],
  "caption": "string"
}

It evaluates to:

"quote": {
  "alignment": {
    "type": "string",
    "canBeOnly": ["left", "center"]
  },
  "caption": {
      "type": "string",
      "allowedTags": "",
      "required": true
    }
}

Another configuration example: /tests/samples/syntax-sugar.json

Nested tools

Tools can contain nested values. It is possible with the array type.

Let the JSON input be the following:

{
    "blocks": [
        "type": list,
        "data": {
            "items": [
                "first", "second", "third"
            ],
            "style": {
                "background-color": "red",
                "font-color": "black"
            }
        }
    ]
}

We can define validation rules for this input in the config:

"list": {
  "items": {
    "type": "array",
    "data": {
      "-": {
        "type": "string",
        "allowedTags": "i,b,u"
      }
    }
  },
  "style": {
      "type": "array",
      "data": {
        "background-color": {
            "type": "string",
            "canBeOnly": ["red", "blue", "green"]
        },
        "font-color": {
            "type": "string",
            "canBeOnly": ["black", "white"]
        }
      }
  }
}

where data is the container for values of the array and - is the special shortcut for values if the array is sequential.

Another configuration example: /tests/samples/test-config.json

Exceptions

EditorJS class

BlockHandler class

ConfigLoader class

Make Tools

If you connect a new Tool on the frontend-side, then you should create a configuration rule for that Tool to validate it on server-side.

Repository

https://github.com/codex-editor/editorjs-php/

About CodeX

We are small team of Web-developing fans consisting of IFMO students and graduates located in St. Petersburg, Russia. Feel free to give us a feedback on team@ifmo.su