variable-creation（变量创建）

Variable Creation

Create Domo card variables (interactive controls) and output curl commands or CLI commands to execute them.

Variables are user-adjustable values that feed into Beast Mode formulas, enabling dynamic what-if analysis. They appear as dropdown, pill, slider, textbox, or date picker controls on cards and dashboards.

When to Use This Skill

• User asks for a dropdown, slider, or interactive control on a card
• User mentions "variable", "parameter", or describes wanting dynamic/adjustable values
• A card needs what-if analysis or user-selectable inputs
• You're building a card and realize a beast mode needs a user-controlled input

Core Workflow — 3-Step Creation

Variable creation requires three sequential API calls. All three are mandatory — skipping the middle step causes a 400 error on the card save.

1. Check name uniqueness (GET /query/v1/functions/variables/uniqueName)
2. Create the function template WITH embedded control (POST /query/v1/functions/template)
3. Register the variable control (PUT /content/v1/variable/controls)
4. Read the current card definition (PUT /content/v3/cards/kpi/definition)
5. Save the card with the new control (PUT /content/v3/cards/kpi/{cardId})

Prerequisites

Variable Data Types

Variable Control Types

Expression Types by Data Type

Values Array

For DROPDOWN and PILL controls, the values array defines the selectable options:

{"expression": {"value": "Option Text", "exprType": "STRING_VALUE"}}

For SLIDER controls, values define the min/max range:

[
  {"expression": {"value": "0", "exprType": "NUMERIC_VALUE"}},
  {"expression": {"value": "100", "exprType": "NUMERIC_VALUE"}}
]

Step 1: Check Name Uniqueness

Endpoint: GET /api/query/v1/functions/variables/uniqueName?name={name}

curl -X GET "https://{instanceUrl}/api/query/v1/functions/variables/uniqueName?name={variableName}" \
  -H "X-DOMO-Developer-Token: {devToken}"

Returns [] if the name is available. Returns an array of function template IDs if the name is already in use. Variable names must be globally unique across the entire Domo instance.

Step 2: Create the Function Template

Endpoint: POST /api/query/v1/functions/template

This creates the variable's function template. The request body must include an embedded control object — this is critical and differs from regular beast mode creation.

curl -X POST "https://{instanceUrl}/api/query/v1/functions/template" \
  -H "X-DOMO-Developer-Token: {devToken}" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "{variableName}",
    "formula": "{defaultExpression}",
    "status": "VALID",
    "dataType": "{dataType}",
    "persistedOnDataSource": false,
    "isAggregatable": true,
    "bignumber": false,
    "owner": null,
    "nonAggregatedColumns": [],
    "legacyId": "calculation_{uuid}",
    "variable": true,
    "isCalculation": true,
    "initialPersistedOnDataSource": false,
    "saved": true,
    "query": "{defaultExpression}",
    "control": {
      "format": {"type": "default"},
      "controlType": "VARIABLE",
      "function": {
        "name": "{variableName}",
        "dataType": "{dataType}",
        "expression": "{defaultExpression}",
        "id": -201
      },
      "saveOverride": true,
      "description": "",
      "values": [
        {"expression": {"value": "{value1}", "exprType": "{exprType}"}},
        {"expression": {"value": "{value2}", "exprType": "{exprType}"}}
      ],
      "type": "{controlType}",
      "unsaved": true,
      "name": "{variableName}",
      "id": -101
    },
    "description": "",
    "locked": false,
    "cacheWindow": "non_dynamic",
    "containsAggregation": false,
    "containsAnalytic": false,
    "invalidColumns": [],
    "nonAggregatedExpressions": [],
    "formulaTemplateDependencies": [],
    "columnPositions": [],
    "formulaId": "calculation_{another_uuid}",
    "formulaDependencies": [],
    "isControlled": false,
    "global": true,
    "unsaved": true,
    "expression": "{defaultExpression}"
  }'

Key fields:

• variable: true — marks this as a variable function (not a regular beast mode)
• control — the embedded control definition with placeholder IDs (-201, -101)
• legacyId and formulaId — generate unique UUIDs in the format calculation_{uuid}
• global: true — variables are instance-wide
• owner: null — server assigns the owner

Response — save the id (numeric function template ID):

{
  "id": 1172,
  "name": "{variableName}",
  "legacyId": "calculation_{uuid}",
  "variable": true,
  ...
}

Step 3: Register the Variable Control

Endpoint: PUT /api/content/v1/variable/controls

This step registers the control with the Domo control system. Without this step, the card save will return 400.

curl -X PUT "https://{instanceUrl}/api/content/v1/variable/controls" \
  -H "X-DOMO-Developer-Token: {devToken}" \
  -H "Content-Type: application/json" \
  -d '[
    {
      "format": {"type": "default"},
      "controlType": "VARIABLE",
      "function": {
        "name": "{variableName}",
        "dataType": "{dataType}",
        "expression": "{defaultExpression}",
        "id": {functionTemplateId from Step 2}
      },
      "saveOverride": true,
      "description": "",
      "values": [
        {"expression": {"value": "{value1}", "exprType": "{exprType}"}},
        {"expression": {"value": "{value2}", "exprType": "{exprType}"}}
      ],
      "type": "{controlType}",
      "unsaved": false,
      "name": "{variableName}"
    }
  ]'

Key differences from Step 2's control:

• function.id is now the real template ID from Step 2 (not -201)
• unsaved: false (not true)
• No id: -101 at the control level
• Body is an array of control objects

Response — returns an array with the registered control, including server-assigned id:

[
  {
    "id": 145,
    "function": {"id": 1172, ...},
    "type": "DROPDOWN",
    "values": [...],
    "controlType": "VARIABLE",
    ...
  }
]

Step 4: Read the Current Card Definition

curl -X PUT "https://{instanceUrl}/api/content/v3/cards/kpi/definition" \
  -H "X-DOMO-Developer-Token: {devToken}" \
  -H "Content-Type: application/json" \
  -d '{
    "dynamicText": true,
    "variables": true,
    "urn": "{cardId}"
  }'

Save the full response. You need definition.subscriptions, definition.controls, definition.charts, definition.modified, etc.

Get the dataSourceId from columns[].sourceId in the response.

Step 5: Save the Card with the New Control

Endpoint: PUT /api/content/v3/cards/kpi/{cardId}

Build the update payload by merging the new control into the card definition.

curl -X PUT "https://{instanceUrl}/api/content/v3/cards/kpi/{cardId}" \
  -H "X-DOMO-Developer-Token: {devToken}" \
  -H "Content-Type: application/json" \
  -d '{
    "definition": {
      "subscriptions": {existing subscriptions from card def — do NOT add dataSourceId here},
      "formulas": {"dsUpdated": [], "dsDeleted": [], "card": []},
      "annotations": {"new": [], "modified": [], "deleted": []},
      "conditionalFormats": {"card": [], "datasource": []},
      "controls": [{existing controls with saveOverride: true}, {new control}],
      "segments": {"active": [], "create": [], "update": [], "delete": []},
      "charts": {existing charts},
      "dynamicTitle": {existing dynamicTitle},
      "dynamicDescription": {"text": []},
      "chartVersion": "{existing chartVersion}",
      "allowTableDrill": true,
      "inputTable": false,
      "modified": {existing modified timestamp},
      "title": "{card title}",
      "description": ""
    },
    "dataProvider": {"dataSourceId": "{dataSourceId}"},
    "variables": true,
    "columns": false
  }'

Critical payload notes:

• variables: true and columns: false at the top level
• dataSourceId goes in dataProvider only — NOT in subscriptions.main
• formulas uses the {dsUpdated, dsDeleted, card} structure (not the array format from the read response)
• Existing controls must be passed in their full server format with saveOverride: true added
• The new control uses the simplified format with function.id = the template ID from Step 2
• The modified timestamp must match the card definition's value

Optional: Validate the Variable Formula

Endpoint: POST /api/query/v1/functions/validateFormulas

Validation is optional but recommended before creating. The formula entry must have "variable": true.

curl -X POST "https://{instanceUrl}/api/query/v1/functions/validateFormulas" \
  -H "X-DOMO-Developer-Token: {devToken}" \
  -H "Content-Type: application/json" \
  -d '{
    "dataSourceId": "{dataSourceId}",
    "columns": [{column schema array}],
    "formulas": {
      "{formulaId}": {
        "id": "{formulaId}",
        "name": "{variableName}",
        "formula": "{defaultExpression}",
        "status": "valid",
        "dataType": "{dataType}",
        "variable": true,
        "templateId": null,
        "legacyId": "{formulaId}",
        "formulaDependencies": []
      }
    }
  }'

Using the Variable in a Beast Mode

A variable has no effect on a card unless it's referenced in a Beast Mode formula:

CASE
  WHEN `My Variable` = 'Option A' THEN `column_a`
  WHEN `My Variable` = 'Option B' THEN `column_b`
  ELSE `column_a`
END

Variables are referenced by name in backticks, just like dataset columns.

Three-Tier Control Hierarchy

Variables have three levels of override:

1. Default Control — Set in Beast Mode Editor (or via API). Baseline value.
2. Card Variable Control — Override in Analyzer for a specific card. Does NOT transfer to dashboards.
3. Dashboard Variable Control — Override on a specific dashboard. Resets on page refresh.

Using the CLI

The community-domo-cli handles the full 3-step flow automatically:

# Check if a variable name is available
community-domo-cli variables check-name "My Variable"

# List variables on a card
community-domo-cli variables list {cardId}

# Create a variable (handles all 3 steps internally)
community-domo-cli variables create {cardId} --body-file variable.json

# Validate a variable formula
community-domo-cli variables validate --body-file validate-payload.json

# Read full card definition (includes controls)
community-domo-cli cards definition {cardId}

Example: Create a string dropdown variable via CLI

variable.json:

{
  "name": "Region Selector",
  "type": "DROPDOWN",
  "function": {
    "name": "Region Selector",
    "dataType": "string",
    "expression": "'North'"
  },
  "description": "Select a region to filter by",
  "values": [
    {"expression": {"value": "North", "exprType": "STRING_VALUE"}},
    {"expression": {"value": "South", "exprType": "STRING_VALUE"}},
    {"expression": {"value": "East", "exprType": "STRING_VALUE"}},
    {"expression": {"value": "West", "exprType": "STRING_VALUE"}}
  ]
}

community-domo-cli variables create 1810280719 --body-file variable.json --yes

The CLI automatically:

1. Checks name uniqueness
2. Creates the function template with embedded control
3. Registers the control via PUT /content/v1/variable/controls
4. Reads the card definition
5. Merges and saves the card

Troubleshooting

Output Format

When generating commands for the user, provide:

1. What it does — one sentence explaining the variable
2. The variable definition — name, type, default, control type, options
3. Numbered commands — in execution order (all 3 steps), ready to copy/paste
4. What to do with each response — especially saving the function template ID from Step 2
5. Beast mode integration — show the formula that references the variable
6. Verify — tell them to check the card in Domo after running