I am currently facing a challenge in web2py where I need to load multiple separate forms onto a single web page using the {{=LOAD(...)}} function. My main concern is how I can trigger a JavaScript function once all of these forms have completed loading initially. Using .ajaxStop() causes the function to be executed every time one of the form components is submitted, which is not the desired behavior for my project.
After much thought, I managed to devise a practical solution for my specific scenario. In each LOAD() event, the sql table row id is used as a parameter. To handle this, I created an empty global javascript object named loaded at the beginning of the file. Then, while iterating over each row, I set properties in loaded to false:
<script>var loaded = {};</script>
{{for row in rows:}}
<script>loaded['{{=row.id}}']=false</script>
{{=LOAD('default','mycomponent.load', args=[row.id], ajax=True)}}
{{pass}}
As each mycomponent.load component is processed, I mark it as loaded in the javascript array and check if all are loaded==true. For instance, at the conclusion of the mycomponent.load file:
<script>
loaded['{{=row.id}}']=true;
if (Object.keys(loaded).every(function(k) {return loaded[k]}))
function_to_execute_once_all_LOADs_done()
</script>
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