Update Parent Item when Relationships Tab is Changed

RE: Update Parent Item when Relationships Tab is Changed

AngelaIp — Tue, 14 Dec 2021 13:38:11 GMT

Thanks for this additional information! Then I will stick to the classic query variant :-)

RE: Update Parent Item when Relationships Tab is Changed

alaxala — Tue, 14 Dec 2021 13:29:51 GMT

Unfortunately this is not possible. While changed relationships must be present in the "this" item node to make changes in the database, unchanged relationships are never present in. So, we can't avoid additional query.

RE: Update Parent Item when Relationships Tab is Changed

AngelaIp — Tue, 14 Dec 2021 10:20:18 GMT

Hi Alaxala,

thanks for this code sample! Haven´t seen this variant before. As far as I see, you addRels and delRels variable mainly contains relationships that has been recently added/deleted to the item and then recalculates the property based on the changes. That´s a smart solution. I have done something similar in the past but in much more complicated way.

Do you also have a variant, that can catch all existing relationships this way? I want to analyze all of my relationship to find a few specific one with certain properties. Would be a big improvement if I could avoid a get query.

RE: Update Parent Item when Relationships Tab is Changed

Nathan H. — Mon, 11 Oct 2021 12:58:32 GMT

alaxala,

Thank you for this code! It works perfectly.

RE: Update Parent Item when Relationships Tab is Changed

alaxala — Mon, 11 Oct 2021 09:40:24 GMT

Try this code attached to OnBeforeUpdate and OnBeforeAdd server events sm_ITA item type

var addRels = this.node.SelectNodes("Relationships/Item[@type='sm_ITA_Assignment' and @action='add']");
var delRels = this.node.SelectNodes("Relationships/Item[@type='sm_ITA_Assignment' and @action='delete']");
string stcurlicenses = this.getProperty("sm_license_count");
int curLicenses = string.IsNullOrEmpty(stcurlicenses) ? 0 : Int32.Parse(stcurlicenses);
curLicenses = curLicenses + addRels.Count - delRels.Count;
this.setProperty("sm_license_count", curLicenses.ToString());
return this;