Open Source Web Application Framework for ASP.NET Core
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{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"$id": "form-rule-descriptor.schema.json",
"title": "FormRuleDescriptor",
"description": "Describes a conditional form rule with one or more actions that execute when the condition is met.",
"markdownDescription": "AI guidance: use rules for simple client-side behavior such as hiding a group when a checkbox is false, disabling a field after a status is selected, or setting a default value. `condition.fieldId` and every action `targetId` must reference existing field/group ids. Rules are not security boundaries; enforce sensitive behavior with backend validation/interceptors too.",
"type": "object",
"properties": {
"id": {
"type": "string",
"description": "Unique identifier for this rule. Prefer kebab-case or camelCase such as 'show-archive-reason'.",
"minLength": 1
},
"name": {
"type": "string",
"description": "Human-readable name for this rule, used by designers/documentation."
},
"condition": {
"type": "object",
"description": "The condition that triggers this rule. For isEmpty/isNotEmpty, omit value.",
"properties": {
"fieldId": {
"type": "string",
"description": "The field whose value is evaluated. Must match a field id in the same form.",
"minLength": 1
},
"operator": {
"type": "string",
"enum": ["equals", "notEquals", "isEmpty", "isNotEmpty"],
"description": "Comparison operator. Use equals/notEquals with value; use isEmpty/isNotEmpty without value."
},
"value": {
"description": "The value to compare against (not used for isEmpty/isNotEmpty)"
}
},
"required": ["fieldId", "operator"],
"additionalProperties": false
},
"actions": {
"type": "array",
"description": "Actions to perform when the condition is met. Actions are executed in order.",
"minItems": 1,
"items": {
"type": "object",
"properties": {
"type": {
"type": "string",
"enum": ["hide", "show", "disable", "enable", "setValue"],
"description": "The action type. hide/show/disable/enable target fields or groups; setValue targets fields."
},
"targetType": {
"type": "string",
"enum": ["field", "group"],
"description": "Whether the target is a field or a group."
},
"targetId": {
"type": "string",
"description": "The id of the target field or group. Must exist in this form's fields or layout groups.",
"minLength": 1
},
"value": {
"description": "The value to set. Used only for setValue actions."
}
},
"required": ["type", "targetType", "targetId"],
"additionalProperties": false
}
}
},
"required": ["id", "condition", "actions"],
"additionalProperties": false,
"examples": [
{
"id": "show-archive-reason",
"name": "Show archive reason",
"condition": { "fieldId": "status", "operator": "equals", "value": 3 },
"actions": [
{ "type": "show", "targetType": "field", "targetId": "archiveReason" }
]
}
]
}