Server-side implementation sample for the Editor.js. It contains data validation, HTML sanitization and converts output from Editor.js to the Block objects.
To install lib use composer:
composer require codex-team/editor.js:dev-master
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
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).
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.
type(required) — type of the block
| value | description |
|---|---|
string |
field with string value |
int/integer |
field with integer value |
bool/boolean |
field with boolean value |
array |
field with nested fields |
allowedTags(optional) — HTML tags in string that won't be removed
| value | default | description |
|---|---|---|
empty |
yes | all tags will be removed |
* |
no | all tags are allowed |
Other values are allowed according to the HTMLPurifier format.
Example:
"paragraph": {
"text": {
"type": "string",
"allowedTags": "i,b,u,a[href]"
}
}
canBeOnly(optional) — define set of allowed values
Example:
"quote": {
"text": {
"type": "string"
},
"caption": {
"type": "string"
},
"alignment": {
"type": "string",
"canBeOnly": ["left", "center"]
}
}
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
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
| Exception text | Cause |
|---|---|
| JSON is empty | EditorJS initiated with empty $json argument |
Wrong JSON format: error |
json_decode failed during $json processing |
| Input is null | json_decode returned null $data object |
| Input array is empty | $data is an empty array |
| Field `blocks` is missing | $data doesn't contain 'blocks' key |
| Blocks is not an array | $data['blocks'] is not an array |
| Block must be an Array | one element in $data['blocks'] is not an array |
| Exception text | Cause |
|---|---|
| Tool `TOOL_NAME` not found in the configuration | Configuration file doesn't contain TOOL_NAME in tools{} dictionary |
| Not found required param `key` | key tool param exists in configuration but doesn't exist in input data. (Params are always required by default unless required: false is set) |
| Found extra param `key` | Param key exists in input data but doesn't defined in configuration |
| Option `key` with value `value` has invalid value. Check canBeOnly param. | Parameter must have one of the values from canBeOnly array in tool configuration |
| Option `key` with value `value` must be TYPE | Param must have type which is defined in tool configuration (string, integer, boolean) |
| Unhandled type `elementType` | Param type in configuration is invalid |
| Exception text | Cause |
|---|---|
| Configuration data is empty | EditorJS initiated with empty $configuration argument |
| Tools not found in configuration | Configuration file doesn't contain tools key |
| Duplicate tool `toolName` in configuration | Configuration file has different tools with the same name |
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.
https://github.com/codex-editor/editorjs-php/
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