Databases
StackOverflow2013
Postsdbo
POKo.computed function updates twice
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POKo.computed function updates twice
    primarykey
    data
    text
    <p>Due to data being loaded via AJAX I need my data to be updated when data arrives.</p> <p>On page load I collect projects in database. Then load data for Tasks and Tags depending on which project is selected (self.SelectedProject). </p> <pre><code>self.Projects = ko.observableArray(); self.Tasks = ko.observableArray(); self.Tags = ko.observableArray(); self.SelectedProject = ko.observable(); // Chosen Project-object... </code></pre> <p>For initialization I load data for the first Project:</p> <pre><code>self.SelectedProject(self.Projects()[0]); // Choose first returned Project... </code></pre> <p>Then I go on to populate my tag-helping arrays:</p> <pre><code>ko.computed(function () { // must be ko.computed as else will not update when data arrives for Tags and Tasks (which are likely to be empty at load time)... // Empty projectAvailableTags before refill... self.SelectedProject().projectAvailableTags([]); // First populate current project's "projectAvailableTags"-array with values... for (var j = 0, jlen = self.Tags().length; j &lt; jlen; j++) { self.SelectedProject().projectAvailableTags().push(self.Tags()[j].TagName()); } for (var i = 0, ilen = self.Tasks().length; i &lt; ilen; i++) { //---- Populate each TaskTag-array with Tags... for (var j = 0, jlen = self.Tags().length; j &lt; jlen; j++) { if (self.Tags()[j].TagTaskId() === self.Tasks()[i].TaskId) { self.Task()[i].TaskTags.push(self.Tags()[j]); // Populate the different tag-Arrays... var tagtype = self.Tags()[j].TagType; switch (tagtype()) { case 0: self.Tasks()[i].Location().push(self.Tags()[j].TagName()); break; case 1: self.Tasks()[i].Manager().push(self.Tags()[j].TagName()); break; case 2: self.Tasks()[i].Employee().push(self.Tags()[j].TagName()); break; } } } }; }); </code></pre> <p>This probably look strange and maybe I am doing it unnecessarily complicated. I use <a href="http://aehlke.github.com/tag-it/" rel="nofollow">http://aehlke.github.com/tag-it/</a> as tag manager and it needs an array with TagNames only. Thus I haven´t figured out how to use the Tags()-array directly although I´d like that.</p> <p>Tasks are presented in an accordion, and I want the Task-tags to be applied in the content panel, while I use my Project-tags as the tagSource for autocomplete-functionality...</p> <p>But I cannot figure out why my tags are applied 2 times with the ko.computed while they aren´t applied unless I reselect the project without it.</p>
    singulars
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. USAsle G
    1. USAsle G
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. This table or related slice is empty.
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload