Parse.com cannot access pointer to PFObject

Question

I have the object GroupRequest and Group on Parse.com. Each GroupRequest has a pointer to a Group object called "group". I have queried to obtain an array of GroupRequests, and now I am trying to display the "name" string property of each Group in the GroupRequests in that array on a table view.

However, I am running into trouble when I try to access [@"name"]. The program crashes and says:

"'NSInternalInconsistencyException', reason: 'Key "name" has no data. Call fetchIfNeeded before getting its value.'"

How can I access the group names properly? Below is the code I'm using to try to access the [@"name"] property:

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"notificationCell" forIndexPath:indexPath];

self.pendingRequestBeingDisplayed = [self.pendingRequests objectAtIndex:indexPath.row];

self.tempGroup = self.pendingRequestBeingDisplayed[@"group"];

cell.textLabel.text = self.tempGroup[@"name"];


return cell;

}

self.pendingRequests is the array of GroupRequest Objects.

Manish Agrawal · Accepted Answer · 2015-02-09 11:07:29Z

1

you need to get pointer fields by writing

[query includeKey:@"group"];

answered Feb 9, 2015 at 11:07

Manish Agrawal

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4 Comments

mnot Over a year ago

wait so if I query to get the grouprequests, would I then have to query again to get the users in "to" and then query again to get the "group" PFObject I want?

mnot Over a year ago

what i'm saying is...is there anyway to access PFObjects using the pointer? I don't want to have to use a query every time.

Manish Agrawal Over a year ago

No, you don't have to query every time for nested objects if you include the sub-object key.

Manish Agrawal Over a year ago

If you have only the pointer then you always have to query to get the corresponding object. Hope that helps.

Dániel Nagy · Accepted Answer · 2015-02-09 11:04:53Z

0

When you run a query, by default you get the pointer fields as pointers, not as PFObjects. If you want to get the pointer fields as PFObjects, you have to call

[query includeKey: @"the_name_of_the_pointer_column"];

before you execute the query.

answered Feb 9, 2015 at 11:04

Dániel Nagy

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2 Comments

mnot Over a year ago

wait so if I query to get the grouprequests, would I then have to query again to get the users in "to" and then query again to get the "group" PFObject I want?

Dániel Nagy Over a year ago

No, if you use includeKey, then it is just one query.

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