> ## Documentation Index
> Fetch the complete documentation index at: https://learn.nextedy.com/llms.txt
> Use this file to discover all available pages before exploring further.
# Enable Conditional Linking
> Restrict which work items can be linked to a Nextedy RISKSHEET row based on query filters, field values, or workflow state.
export const LastReviewed = ({date}) => {
if (!date) return null;
const formatted = new Date(`${date}T00:00:00Z`).toLocaleDateString("en-US", {
year: "numeric",
month: "long",
day: "numeric",
timeZone: "UTC"
});
return
Last reviewed on {formatted}
;
};
## Prerequisites
* An existing risksheet with link columns (`itemLink`, `multiItemLink`, or `taskLink`)
* Administrator access to edit the sheet configuration (the sheet configuration file, `risksheet.json`)
* Familiarity with [upstream traceability columns](/risksheet/guides/columns/upstream-traceability) or [downstream traceability columns](/risksheet/guides/columns/downstream-traceability)
## Filter Link Suggestions with `queryFactory`
A query factory is a named JavaScript function that returns a Lucene query string. The query string is appended to the autocomplete search criteria for a link column, so the suggestion dropdown only shows work items that match both the user's typed text and your filter.
### Step 1: Define the Query Factory in the Sheet Configuration
Query factories live in the top-level `queryFactories` section of the sheet configuration. Each entry is a named function that receives an `info` object (current row context) and returns a Lucene query string.
```yaml theme={null}
queryFactories:
filterBySystemElement: |
function(info) {
var sysElement = info.item['linkedSystemElement'];
if (sysElement) {
return 'linkedWorkItems:(' + sysElement + ')';
}
return '';
}
```
This factory filters suggestions to work items linked to the same system element selected in the current row. If no element is selected yet, the factory returns an empty string (no extra filter applied).
### Step 2: Reference the Query Factory from a Link Column
For `itemLink` and `multiItemLink` columns, set `queryFactory` inside the column's `typeProperties` block. The value is the name of the registered factory:
```yaml theme={null}
columns:
- id: requirement
header: Requirement
type: itemLink
bindings: linkedRequirement
level: 1
typeProperties:
linkRole: relates_to
linkTypes: requirement
queryFactory: filterBySystemElement
```
When users type in the autocomplete, Risksheet calls `filterBySystemElement(info)` with the current row data, appends the returned query to the search, and shows only matching work items.
### Step 3: Reload and Verify
Save the sheet configuration. The autocomplete requires a minimum of 3 characters before the search triggers — type at least three characters in the link cell and confirm that suggestions are now limited to items matching your filter.
## Interactive Filtering from the Top Panel
A query factory can read user input from the top panel (`risksheetTopPanel.vm`) using jQuery, turning a dropdown into a live filter for autocomplete suggestions.
```yaml theme={null}
queryFactories:
hazardQuery: |
function(info) {
var sel = $('#asilFilter').val();
if (sel === 'all') { return ''; }
return 'asilClassification:' + sel;
}
```
Users pick a classification in the top panel (for example, a `