Skip to content

Select From List

Select an item from a list of strings with a dropdown interface.

Description

The Select From List node allows users to choose a single item from a list of strings using a dropdown interface. It automatically updates its choices when the input list changes and preserves the current selection when possible.

Parameters

Input Parameters

Parameter Type Description Default
list list List of items to select from []

Output Parameters

Parameter Type Description
selected_item string The currently selected item

Features

  • Dynamic Dropdown: Automatically populates dropdown with items from the input list
  • Selection Preservation: Maintains current selection when list updates (if item still exists)
  • String Conversion: Converts all list items to strings for consistent comparison
  • Real-time Updates: Updates immediately when input list changes
  • Safe Handling: Gracefully handles empty or invalid lists

Examples

Basic List Selection

# Input list: ["Apple", "Banana", "Cherry", "Date"]
# User selects: "Banana"
# Output: "Banana"

Status Selection

# Input list: ["In Progress", "Not Started", "Waiting", "Completed", "Blocked"]
# User selects: "Completed"
# Output: "Completed"

Dynamic List Updates

# Initial list: ["Option A", "Option B", "Option C"]
# User selects: "Option B"
# List updates to: ["Option A", "Option B", "Option D", "Option E"]
# Selection preserved: "Option B" (still exists in new list)

# If list updates to: ["Option X", "Option Y", "Option Z"]
# Selection resets to: "Option X" (first item in new list)

Use Cases

  • Status Selection: Choose from predefined status values (e.g., "In Progress", "Completed")
  • Category Selection: Select from a list of categories or types
  • Configuration Choices: Pick from available configuration options
  • User Interface: Provide dropdown selection in workflows
  • Data Filtering: Select specific items from generated lists

Workflow Examples

Status Management Workflow

Create Text List → Select From List → Process Selected Status
     ↓                    ↓
["In Progress",      "Completed"    → Update task status
 "Not Started", 
 "Waiting", 
 "Completed", 
 "Blocked"]

Dynamic Option Selection

API Response → Extract Options → Select From List → Use Selection
     ↓              ↓                ↓
JSON data    → ["Option 1",    → "Option 2"    → Process choice
              "Option 2", 
              "Option 3"]

Behavior

Selection Logic

  1. Initial Load: Selects the first item in the list
  2. List Update:
    • If current selection exists in new list → keeps current selection
    • If current selection doesn't exist → selects first item in new list
  3. Empty List: Clears selection (empty string)
  4. Invalid Input: Clears selection (empty string)

String Conversion

All list items are automatically converted to strings for consistent comparison:

  • Numbers: 123 → "123"
  • Booleans: True → "True"
  • Objects: {"key": "value"} → "{'key': 'value'}"