Currently, I'm working on a page where updates are made using PrimeNG PickList. The initial state of the target list is not empty, but when selected items are moved from source to target list, they are not removed from the source list as expected.
From my understanding, PrimeNG internally uses the "==" operator which cannot be overridden. Is there a way to customize this behavior and exclude the selected items from the source list?
Although this solution may be a bit outdated, it could still benefit someone in need! I implemented a filter on the source array like this:
this.currentRoles = allRoles.filter(selectedRole => {
return !this.user.selectedUserRoles.some(role => role.id === selectedRole.id && role.name === selectedRole.name);
});
It's important to note that I executed this code only after subscribing to certain essential objects (such as retrieving the list of available roles in the system and fetching the necessary user along with their associated roles).
Afterwards, within the HTML template, I connected [source] to currentRoles and linked [target] to the userRoles property on the respective user object.
I implemented a solution for this problem, although it might not be the most efficient since it's O(n)^2. However, it works well for shorter source lists.
for(let i = 0; i < this.list2.length; i++){
for(let j = 0; j < this.list1.length; j++){
if(this.list1[j].name === this.list2[i].name){
this.list2.splice(i,1);
}
}
}
this.newList2 = this.list2;
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