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📋 Fresh way to create simple or complex forms – without programming!

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# 📋 Vue Described-Data Form

A fresh way to create simple or complex forms – **without programming!**

![](https://raw.githubusercontent.com/marekmensa/vue-dd-form/master/demo.gif)

# 🕹 Demo

Try it yourself in a [Live Demo](https://marekmensa.github.io/vue-dd-form/)!

# 📖 About

vue-dd-form aims to reduce the of time creating forms, while keeping the flexibility and data-model persistence. This project is a first implementation of the **Described-Data approach**.

## What is Descibed-Data?

Described-Data is a concept inspired by the [JSON Schema](https://json-schema.org/). Basically, each node in the data set is assigned a **view** (input), which it then represents on the UI. In practise, vue-dd-form only needs your **data** and **descriptions** to render itself!

**"I use a JSON Schema, what is the difference?"**
- **clarity**: data is described by a dotted-notation, which makes the whole set much more readable
- **view-oriented**: each node as assigned a specific view (eg. image-upload), not a general type (eg. string)

# 🛠️ Getting started

1. Install the package
```
npm install --save vue-dd-form
```

2. Import the component

```javascript
import ddForm from 'vue-dd-form';
```

```javascript
components: {
  ddForm,
}
```

3. And use it!

```html
<dd-form
    :data="exampleDataSet"
    :descriptions="exampleDescriptions"
    @submit="submit">
</dd-form>
```

...inside your `data()` tag
```javascript
  exampleDataSet: {},
  exampleDescriptions: {
	  "name": { view: 'text', label: 'Full name'}
  }
```
Output of this simple example looks like this:

![](https://github.com/marekmensa/vue-dd-form/blob/master/getting_started.png?raw=true)

⬇️ **More about all params & events below.**

---

# 🔍 Usage

## Descriptions

Your JS Data is described by another JS Object targeting all nodes which should be rendered on the screen. Imagine a data model of a IMDB movie:

```javascript
{
   author: {
      name: "J. Cameron",
      birth: "2020-09-08T12:11:03.332Z",
      active: true
    }
    title: "Titanic",
    description: "Lorem ipsum ...",
    language: "English",
    genres: ["Action", "Drama"]
}
```

...the descriptions could look something like this:

```javascript
{
  author: { view: "group", label: "Author" },
  author.name: { view: "text", label: "Name of author" },
  author.birth: { view: "datetime", label: "Date of birth" },
  author.active: { view: "tick", label: "Is the author still active?" },
  title: { view: "text", label: "Movie title" },
  description: { view: "area", "label": "Description" },
  genres: { view: "checkbox", "label: "Genres", options: ["Action", "Comedy", "Drama"] },
  language: { view: "select", label: "Original language", "options: ["English", "Spanish", "Korean"] }
}
```

**Description paths**

So as you can see nodes are targeted by a dotted notation. Each description object has a required value of `view`, which specifies, to which UI element should the node be rendered. Currently there is 11 basic view types, though you can specify your own (see _Custom views_).

### Wildcard paths
If you want to describe every array's child, you can use the **wildcard path**. Look closely at this data set:

```javascript
{
    programme: [
	    // Day 1
          {
            header: 'Friday',
            subheader: '25th September 2020',
            items: [
            // Item 1
              {
                title: 'Arrival',
                subtitle: 'please be on time',
                time: '9AM'
              },
            // Item 2
			 {
                title: 'Workshop 1',
                subtitle: 'hosted by John Doe',
                time: '11AM'
             }
             // Item 3 ...
          },
	    // Day 2 ...
        ],
}
```

The wildcard paths can be leveraged like this:

```javascript
programme: { view: 'collection' },
programme[*]: { view: 'group', label: 'Day no. {_index}' }, // more about the {_index} at Dynamic values
programme[*].header: { type: 'text', label: 'Title' },
programme[*].subheader: { type: 'text', label: 'Short description' },
programme[*].items: { type: 'collection', label: 'Sessions' },
programme[*].items[*]: { type: 'group' },
programme[*].items[*].title: { type: 'text', label: 'Session name' },
programme[*].items[*].subtitle: { type: 'area', label: 'About' },
programme[*].items[*].time: { type: 'text', label: 'Time of start' },
```

### Dynamic values

Any view type can have a String in description value. If the string is found in provided `functions` set, given function gets executed. The function also receives the child's path and value as a parameter.

```jsx
{
   view: 'group'
   hidden: '_groupHidden'
}

```

...while in JS code

```jsx
<dd-form
  ...
  :functions="myFunctions"
>
</dd-form>

data() {
  return {
      myFunctions: {
        '_groupHidden': this.groupHidden,
        '_groupIndex': this.groupIndex,
      },
    };
},

methods: {
  groupHidden({path, value}) {
    return value.item < 0;
  },
  groupIndex({path}) {
    return this.getIndex(path);
   }
},

```

Methods can be also put inline to the string. For these cases, the dynamic value needs to be wrapped inside the brackets.

```jsx
{
   view: 'group'
   label: 'Day no. {_groupIndex}'
}

```

Check the [demo's source code](https://github.com/marekmensa/vue-dd-form/blob/master/docs-src/components/Home.vue) to see it in use.

### Side note to Descriptions
The order of descriptions defines the order of the views on the UI. It is also needed to describe first the Object and then it's sub-nodes.

---

## View types

There is 11 basic view types included in this package:

-   group
-   collection
-   text
-   area
-   select
-   checkbox
-   counter
-   datetime
-   upload
-   radio
-   tick

## collection

Serves as Array container and expects to have multiple inner children. Collection shows just an add-child button by default. It is only an abstraction and has no visual representation.

**Usage**

```jsx
{
    view: 'collection',
}
```

**Possible value types**

_(Array)_: Consumes only `array`

**Arguments**

- `label` _(String)_: Shows title on the top of the view
- `class` _(String or Array)_: View's assigned class
- `wrapper` _(String)_: Name of the view's wrapper
- `hidden` _(Boolean)_: Hides or shows the view
- `draggable` _(Boolean)_: Allows or disallows children dragging
- `deletable` _(Boolean)_: Allows or disallows children delete
- `addable` _(Boolean)_: Allows or disallows to add children
- `defaultValue` _(*)_: Override of view's default value

## group

Serves as Object container and expects to have nested children. It is only an abstraction and has no visual representation.

**Usage**

```jsx
{
    view: 'group',
}
```

**Possible value types**

`(Object) or null`: Consumes only `object`

**Arguments**

- `label` _(String)_: Shows title on the top of the view
- `class` _(String or Array)_: View's assigned class
- `wrapper` _(String)_: Name of the view's wrapper
- `hidden` _(Boolean)_: Shows or hides the view
- `append` _(Object)_: Specifies the UI invisible appendant data to be merged with the object (triggered while adding new item to array)
- `defaultValue` _(*)_: Override of view's default value

## text

Acts as a basic single-line text field.

**Usage**

```jsx
{
    view: 'text',
}
```

**Possible value types**

`String`: Consumes only String

**Arguments**

- `label` _(String)_: Shows title on the top of the view
- `class` _(String or Array)_: View's assigned class
- `hidden` _(Boolean)_: Hides or shows the view
- `wrapper` _(String)_: Name of the view's wrapper
- `defaultValue` _(*)_: Override of view's default value

## select

Acts as a drow-down box.

**Usage**

```jsx
{
    view: 'select',
}
```

**Possible value types**

`String or null`: Consumes String or null

**Arguments**

- `label` _(String)_: Shows title on the top of the view
- `class` _(String or Array)_: View's assigned class
- `hidden` _(Boolean)_: Hides or shows the view
- `wrapper` _(String)_: Name of the view's wrapper
- `options` _(Array)_: Field option values
- `defaultValue` _(*)_: Override of view's default value

-   **Plain mode**
    
    ```jsx
    ["Dog", "Cat"]
    ```
    
-   **Value-text mode**
    
    ```jsx
    [
        { text: "Dog", value: "doggo" },
    	{ text: "Cat", value: "caterpillar" }
    ]
    ```

## checkbox

Acts as a checkbox set.

**Usage**

```jsx
{
    view: 'checkbox',
}
```

**Possible value types**

`Array`: Consumes Array of strings

**Arguments**

- `label` _(String)_: Shows title on the top of the view
- `class` _(String or Array)_: View's assigned class
- `hidden` _(Boolean)_: Hides or shows the view
- `wrapper` _(String)_: Name of the view's wrapper
- `options` _(Array)_: Field option values
- `defaultValue` _(*)_: Override of view's default value

-   **Plain mode**
    
    ```jsx
    ["Dog", "Cat"]
    ```
    
-   **Value-text mode**
    
    ```jsx
    [
    	{ text: "Dog", value: "doggo" },
    	{ text: "Cat", value: "caterpillar" }
    ]
    ```

## counter

Acts as a counter box.

**Usage**

```jsx
{
    view: 'counter',
}
```

**Possible value types**

`Number`: Consumes a Number

**Arguments**

- `label` _(String)_: Shows title on the top of the view
- `class` _(String or Array)_: View's assigned class
- `hidden` _(Boolean)_: Hides or shows the view
- `wrapper` _(String)_: Name of the view's wrapper
- `min` _(Number)_: Minimum value to select
- `max` _(Number)_: Maximum value to select
- `defaultValue` _(*)_: Override of view's default value

## datetime

Acts as a date-time selection field.

**Usage**

```jsx
{
    view: 'datetime',
}
```

**Possible value types**

`Date or String`: Consumes a Date, String or Timestamp (Firebase) but always returns Date

**Arguments**

- `label` _(String)_: Shows title on the top of the view
- `class` _(String or Array)_: View's assigned class
- `hidden` _(Boolean)_: Hides or shows the view
- `wrapper` _(String)_: Name of the view's wrapper
- `min` _(String_)*: Minimum date value
- `max` _(String_)*: Maximum date value
- `defaultValue` _(*)_: Override of view's default value

_* String in a Date format_

## upload

Acts as a box for file uploads and renders into preview box, if consumable by web (image, video, ...).

**Usage**

```jsx
{
    view: 'upload',
}
```

**Possible value types**

`String`: Consumes a String

**Arguments**

- `label` _(String)_: Shows title on the top of the view
- `class` _(String or Array)_: View's assigned class
- `endpoint` _(String)_: API endpoint URL*
- `payload` _(Object or String)_: API payload data*
- `hidden` _(Boolean)_: Hides or shows the view
- `wrapper` _(String)_: Name of the view's wrapper
- `defaultValue` _(*)_: Override of view's default value

_* Endpoint URL receives a POST call with FormData (`image` and `payload`)_

**⚠️ Note from author**
File upload functionality is heavily domain-oriented, thus I'd advise you to clone the [ViewUpload.vue]([https://github.com/marekmensa/vue-dd-form/blob/master/src/views/ViewUpload.vue](https://github.com/marekmensa/vue-dd-form/blob/master/src/views/ViewUpload.vue)), modify it by your needs and use it as a **Custom view**.

## area

Acts as a multi-line text field with optional WYSIWYG editor.

**Usage**

```jsx
{
  view: 'area',
}
```

**Possible value types**

`String`: Consumes only String

**Arguments**

- `label` _(String)_: Shows title on the top of the view
- `class` _(String or Array)_: View's assigned class
- `hidden` _(Boolean)_: Hides or shows the view
- `wrapper` _(String)_: Name of the view's wrapper
- `html` (Boolean): Whether or not to allow WYSIWYG features
- `defaultValue` _(*)_: Override of view's default value

## radio

Acts as a radio button set.

**Usage**

```jsx
{
  view: 'radio',
}

```

**Possible value types**

`String`: Consumes a String or null

**Arguments**

- `label` _(String)_: Shows title on the top of the view
- `class` _(String or Array)_: View's assigned class
- `hidden` _(Boolean)_: Hides or shows the view
- `wrapper` _(String)_: Name of the view's wrapper
- `options` _(Array)_: Field option values
- `defaultValue` _(*)_: Override of view's default value

-   **Plain mode**
    
    ```jsx
    ["Dog", "Cat"]
    ```
    
-   **Value-text mode**
    
    ```jsx
    [
    	{ text: "Dog", value: "doggo" },
    	{ text: "Cat", value: "caterpillar" }
    ]
    ```

## tick

Acts as a single checkbox.

**Usage**

```jsx
{
  view: 'tick',
}

```

**Possible value types**

`Boolean`: Consumes a Boolean

**Arguments**

## Custom views

Any custom view can be inserted via `:views` property. Custom views are superior to the default ones, so `text` can be overwritten by a custom one.

Usage:
-   pass a Object of components to `:views` property in dd-form
-   component will receive `path, value and description` properties
-   the component must emit a @change event with `value and path` properties

```jsx
    customViews: {
	   'text': customTextView,
	   'generator': generatorView,
    }
    
    ```
    
    ```jsx
    import customTextView from 'path/to/custom-view';
    
    ```
    
    ...and bind the data in dd-form
    
    ```jsx
    <dd-form
    	:views="customViews",
    	...
    ></dd-form>
    ```

**Check the [demo's source code](https://github.com/marekmensa/vue-dd-form/blob/master/docs-src/components/Home.vue) to see it in use.**

### Advanced: Sub-elements
Some sub-elements can be replaced too: `button-add`, `button-remove`, `button-submit`, `headline`.

```jsx
    customViews: {
	   'collection.button-add': customButtonAdd,
	   'collection.headline': customHeadline,
	   'collection.button-remove': customButtonRemove,
	   'group.headline': customHeadline,
	   'group.button-submit': customButtonSubmit,
    }
```

---

## Other features

### Language customization

vue-dd-form provides a `:lang` property, which can rewrite the default language wording.

```jsx
<dd-form
  :lang="customLang",
  ...
></dd-form>
```

...and the lang object
```jsx
customLang: {
  add: 'Add item',
  remove: 'Remove item',
  save: 'Save data'
}
```

### Wrappers (beta)

Views can be wrapped inside separate boxes (DIVs) so we can position them in any way. Look at example data:

```jsx
{
    programme: [
    {
      header: 'Friday',
      subheader: '25th September 2020',
      items: [
        ...
	],
      }
```

If we wanted, for instance, to have header and sub-header on the left side of the screen and items on the right, the descriptions would look as follows:

```jsx
programme[*].header: { type: 'text' },
programme[*].subheader: { type: 'text', wrapper: 'left' },
programme[*].items: { type: 'collection', wrapper: 'left' },
```

In result HTML, the views would look like this

```html
<div class="left">
	
	<div>...</div>
	
	<div>...</div>
</div>
<div class="right">
	
	<div>...</div>
</div>
```

Afterwards, only thing to be defined are the CSS classes. Check the [demo's source code](https://github.com/marekmensa/vue-dd-form/blob/master/docs-src/components/Home.vue) to see it in use.

---

## Events

`@change` fired after any value change, emits path, value changed & current data set

```html
change({ path, value, data }) {
      // eslint-disable-next-line no-console
      console.log(path, value); // ex. => 'programme[*].header', 'Friday'
      console.log(data); // ex. => { ... }
},

```

`@submit` fired after form submit, emits data value

```jsx
submit({ data }) {
  // eslint-disable-next-line no-console
  console.log(data); // ex. => { ... }
},

```

`@add` fired after a item is added to a collection, emits path, value added & current data set

```html
add({ path, value, data }) {
      // eslint-disable-next-line no-console
      console.log(path, value); // ex. => 'programme[*].options', { header: 'Friday', ... }
      console.log(data); // ex. => { ... }
},

```

`@remove` fired after a item is added to a collection, emits path, value removed, index & current data set

```html
remove({ path, value, data, index }) {
      // eslint-disable-next-line no-console
      console.log(path, value); //  ex. => 'programme[*].options', { header: 'Friday', ... }
      console.log(data); // ex. => { ... }
      console.log(index); // ex. => 1
},

```

---

## Styling

Form can be styled in verious ways depending on the depth of the adjustment:
- Any view can be assigned a class parameter. Class can be your custom one or one of the helper classes below.
- Any view in a group view can be assigned a wrapper parameter (see Wrappers).
- If none of above does not fulfill your needs, you can override or define your own views (see Custom views)

### Helper classes

- `col--1-3` (sets width to 1/3 of the available space)
- `col--2-3` (sets width to 2/3 of the available space)
- `col--1-2` (sets width to one half of the available space)
- `col--1-1` (sets full-width)
- `row` (makes the div's direction inline)
- `row--boxed` (makes the div's direction inline & puts it in a shadowed box)
- `row--responsive` (makes the div's direction inline, but wraps on mobile)

### Other classes appearing in UI

- `view`
- `view—root`
- `view—branch`
- `view—leaf`
- `view__container`
- `view__container—removable`
- `view__wrapper—removable`
- `button`
- `button—add`
- `button—remove`
- `button—submit`
- `headline`

# 🏁 Conclusion

There are many useful things which are still not yet implemented (validation, CDN availability etc.). I'd be very thankful for any contributions! Described-Data would work the best if it was multi-platform so if you feel like cooperating (React etc.), hit me up!

# License

[The MIT License](http://opensource.org/licenses/MIT)

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