> ## Documentation Index
> Fetch the complete documentation index at: https://globalprs-docs.sadhguru.org/llms.txt
> Use this file to discover all available pages before exploring further.

# Fields

# Fields

Fields are the fundamental data collection units in the Global PRS system. They define how information is captured, validated, and processed throughout the registration process. This section covers field types, configuration, and best practices.

## Field Types

### 1. Text Fields

* Single line text
* Multi-line text
* Rich text
* Masked input

### 2. Numeric Fields

* Integer
* Decimal
* Currency
* Percentage

### 3. Selection Fields

* Dropdown
* Radio buttons
* Checkboxes
* Multi-select

### 4. Special Fields

* Date picker
* Time picker
* File upload
* Location picker

## Field Configuration

### 1. Basic Structure

```json theme={null}
{
  "fieldId": "full_name",
  "type": "text",
  "label": "Full Name",
  "placeholder": "Enter your full name",
  "required": true,
  "validation": {
    "pattern": "^[a-zA-Z ]{2,50}$",
    "message": "Please enter a valid name"
  },
  "display": {
    "condition": "{age} >= 18",
    "order": 1
  }
}
```

## Field Features

### 1. Validation

* Required fields
* Pattern matching
* Range validation
* Custom validation
* Cross-field validation

### 2. Display Logic

* Conditional visibility
* Dynamic options
* Dependent fields
* Custom rendering

### 3. Data Processing

* Format conversion
* Value transformation
* Aggregation
* Calculation

## Field Implementation

### 1. Text Field

```json theme={null}
{
  "type": "text",
  "config": {
    "minLength": 2,
    "maxLength": 50,
    "pattern": "[a-zA-Z ]+",
    "transform": "uppercase"
  }
}
```

### 2. Select Field

```json theme={null}
{
  "type": "select",
  "config": {
    "options": [
      {"value": "1", "label": "Option 1"},
      {"value": "2", "label": "Option 2"}
    ],
    "multiple": false,
    "searchable": true
  }
}
```

### 3. Date Field

```json theme={null}
{
  "type": "date",
  "config": {
    "format": "YYYY-MM-DD",
    "min": "{today}",
    "max": "{today+30d}",
    "disabledDays": ["sunday"]
  }
}
```

## Field Validation

### 1. Built-in Validators

* Required
* Email
* Phone
* URL
* Numeric
* Date

### 2. Custom Validators

* Regex patterns
* Function validators
* Async validators
* Cross-field validators

### 3. Validation Messages

* Error templates
* Custom messages
* Localization
* Dynamic content

## Field Dependencies

### 1. Value Dependencies

* Calculated fields
* Conditional values
* Lookup fields
* Aggregations

### 2. Display Dependencies

* Visibility rules
* Enable/disable rules
* Option filtering
* Dynamic updates

## Best Practices

### 1. Field Design

* Clear labels
* Helpful placeholders
* Consistent formatting
* Appropriate defaults
* Error guidance

### 2. Validation

* Progressive validation
* Clear error messages
* Helpful suggestions
* Graceful handling

### 3. Performance

* Efficient validation
* Optimized rendering
* Minimal dependencies
* Cache usage

## Field States

### 1. UI States

* Empty
* Filled
* Invalid
* Disabled
* Loading

### 2. Validation States

* Not validated
* Valid
* Invalid
* Pending
* Error

## Security

### 1. Input Validation

* Type checking
* Range checking
* Pattern matching
* Sanitization

### 2. Access Control

* Field permissions
* Value restrictions
* Audit logging
* Data protection

## Next Steps

* Learn about [Field Types](/modules/fields/types)
* Understand [Field Validation](/modules/fields/validation)
* Explore [Field Expressions](/modules/fields/expressions)
* Study [Form Creation](/modules/forms/creation)