Loop link detected for the property "previewImage" how to solve?
Hello
I'm periodiacally to receive the following error message:
Asset:///controls/DisplayResultsNavPages.QML:118:25: SearchResultsListItem QML: link detected loop for the property "previewImage".
Here's a sample of my code, the error occurs in ListItemComponent, I need to call a function that will scrape a page in real time and then update the datmodel if the previewImage is empty. I don't know if there is a better place to call the scrapePictureIfNeeded() thereby avoiding loop link detected the error, if there is or if you have some tips on how to avoid this error, it would be greatly appreciated...
Thank you, in advance...
Container { ListView { function scrapePictureIfNeeded( ExternalUrl, source, Index ) { if ( sIndexesSoFar.indexOf(Index+"|") == -1 ) { sIndexesSoFar += Index + "|"; netscrape2.setadImages(""); netscrape2.setadId(Index); netscrape2.scrapeSite(ExternalUrl); } return ""; } id: searchListView dataModel: searchDataModel listItemComponents: [ ListItemComponent { id: listComponentSearchResultsListItem type: "" SearchResultsListItem { pubDate: ListItemData.TimeStamp + " - " + ListItemData.Location previewImage: ( ListItemData.PreviewImage == "" ) ? ListItem.view.scrapePictureIfNeeded( ListItemData.ExternalUrl, ListItemData.Source, ListItem.indexPath ):ListItemData.PreviewImage sourceImage: ListItemData.Source } } ] onTriggered: { // launch second page } attachedObjects: [ ScrapeHttp { id: netscrape2 onComplete: { var aPictures = netscrape2.adImages.split("|"); var data = searchDataModel.data([netscrape2.adId]); if ( aPictures.length > 0 ) { data.PreviewImage = aPictures[0]; searchDataModel.replace([netscrape2.adId], data); } } } ] } // end of ListView } // End of Container
Hello
I solved it, after some research, I have dicsocvering that QML actually binds the function to the property, so I moved the fuction call to: and now, everythign works...
itemType function (data, row) {}
scrapePictureIfNeeded (data. ExternalUrl, data. Source, row)
Return ' ';
}
Tags: BlackBerry Developers
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