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Rules

Rules use conditions and statements to bring business intelligence to your model.

Rules consist of a list with conditions and statements as key-value pairs. We've made a selection of conditions with which you can create logical flows. Statements can be typed with a combination of tokens: values , operators , references and functions .

Rules are executed in the order they are written.

Syntax

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Syntax Help

In the syntax we use symbols and colors to communicate the meaning more clearly. We'll explain each symbol and color below. We use data types to let you know which data type is used.

Name Symbol Color Description
Blue Blue Data type
Red Red Reference
Yellow Yellow Function
Cyan Cyan Condition
Green Green Statement
Grey Grey Comment
Ellipsis ... Optional repetition 
rules:
  string:
    - condition: statement
    ...
  ...

Examples

In this example, if frame_left is set to variant_2 , frame_right will also be set to variant_2 . 

questions:
  frame_left:
    type: list
    outputs: [ id, price ]
    options:
      - [ variant_1, 100 ]
      - [ variant_2, 200 ]

  frame_right:
    type: list
    outputs: [ id, price ]
    options:
      - [ variant_1, 100 ]
      - [ variant_2, 200 ]

rules:
  rule1:
    - if: $frame_left.outputs.id == variant_2
    - then: $frame_right.outputs.id = variant_2

In this example, frame_right will be set automatically according to frame_left. 

questions:
  frame_left:
    type: list
    outputs: [ id, price ]
    options:
      - [ variant_1, 100 ]
      - [ variant_2, 200 ]

  frame_right:
    type: list
    outputs: [ id, price ]
    options:
      - [ variant_1, 100 ]
      - [ variant_2, 200 ]

rules:
  rule1:
    - match: $frame_left.outputs.id
    - case: variant_1
    - then: set( $frame_right, variant_1 )
    - case: variant_2
    - then: set( $frame_right, variant_2 )
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