fix: pressure loss results: do not display child rank for results from child law nub

refs #585

src/app/components/fixedvar-results/fixed-results.component.ts

@@ -10,6 +10,7 @@ import { NgParameter } from "../../formulaire/elements/ngparam";
 import { capitalize, Result, ResultElement } from "jalhyd";
 
 import { sprintf } from "sprintf-js";
+import { PressureLoss } from "jalhyd";
 
 @Component({
     selector: "fixed-results",
@@ -256,10 +257,20 @@ export class FixedResultsComponent extends ResultsComponentDirective {
                         if (sn.parent) {
                             ct = sn.parent.calcType;
                         }
-                        const cn = capitalize(this.intlService.childName(c));
-                        let label = sprintf(this.intlService.localizeText("INFO_STUFF_N"), cn)
-                            + (c.findPositionInParent() + 1) + " : "
-                            + this.formService.expandVariableNameAndUnit(ct, k);
+
+                        // do not display child rank in case of pressure loss law
+                        const displayChildRank = !(sn instanceof PressureLoss);
+                        let label: string;
+                        if (displayChildRank) {
+                            const cn = capitalize(this.intlService.childName(c));
+                            label = sprintf(this.intlService.localizeText("INFO_STUFF_N"), cn) + (c.findPositionInParent() + 1);
+                        }
+                        else {
+                            label = capitalize(this.intlService.childName(c));
+                        }
+
+                        label += " : ";
+                        label += this.formService.expandVariableNameAndUnit(ct, k);
                         label += this._fixedResults.getHelpLink(k);
                         data.push({
                             label: label,