How to combine multiple FIlters together to filter Task Rows using jQuery?
You were close in your second test. Here's a working demo:
http://codepen.io/luciopaiva/pen/oXpzGw?editors=101
I refactored your code a little and centralized the logic around updateFilters()
, which is called every time any change event occurs. It starts by assuming each row should be shown and then tests against each filter that is different from the default value (be it 'Any', 'None' or undefined
).
By the way, if you can change data-user-assigned
into data-user
, here's a slightly improved code that greatly reduces the number of lines of code:
http://codepen.io/luciopaiva/pen/YXYGYE?editors=101
I'm using call
so I can pass the DOM element (referenced through this
) to the context of changeFilter()
.
I also put all filters into an object (filters
) so I can access each one by its name, like filters[filterName]
and be able to automate things.
It's worth mentioning that filters
variable is global and the whole thing should be put inside an IIFE.
But let's continue. You can go even further and remove the boilerplate code for each change
event, considering you can rename element #assigned-user-filter
to #user-filter
:
http://codepen.io/luciopaiva/pen/YXYGaY?editors=101
The Javascript of this final approach:
(function () {
var
filters = {
user: null,
status: null,
milestone: null,
priority: null,
tags: null
};
function updateFilters() {
$('.task-list-row').hide().filter(function () {
var
self = $(this),
result = true; // not guilty until proven guilty
Object.keys(filters).forEach(function (filter) {
if (filters[filter] && (filters[filter] != 'None') && (filters[filter] != 'Any')) {
result = result && filters[filter] === self.data(filter);
}
});
return result;
}).show();
}
function bindDropdownFilters() {
Object.keys(filters).forEach(function (filterName) {
$('#' + filterName + '-filter').on('change', function () {
filters[filterName] = this.value;
updateFilters();
});
});
}
bindDropdownFilters();
})();
Here I used the same logic as in the second approach, using filters names to reference each dropdown. Classic boilerplate!
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JasonDavis
PHP/MySQL is my flavor of choice however more recently JavaScript is really becoming something I enjoy developing with! Writing code since 2000' Currently working heavily with SugarCRM + Launching my Web Dev company ApolloWebStudio.com "Premature optimization is not the root of all evil, lack of proper planning is the root of all evil." Twitter: @JasonDavisFL Work: Apollo Web Studio - https://www.apollowebstudio.com Some of my Web Dev skills, self rated... +------------+--------+------+--------------+ | Skill | Expert | Good | Intermediate | +------------+--------+------+--------------+ | PHP | X | | | +------------+--------+------+--------------+ | MySQL | X | | | +------------+--------+------+--------------+ | Javascript | X | | +------------+--------+------+--------------+ | jQuery | X | | +------------+--------+------+--------------+ | CSS+CSS3 | X | | +------------+--------+------+--------------+ | HTML+HTML5 | X | | | +------------+--------+------+--------------+ | Photoshop | | X | | +------------+--------+------+--------------+ | Web Dev | X | | | +------------+--------+------+--------------+ | SugarCRM | X | | | +------------+--------+------+--------------+ | Magento | | X | | +------------+--------+------+--------------+ | WordPress | X | | | +------------+--------+------+--------------+ | SEO | X | | | +------------+--------+------+--------------+ | Marketing | X | | | +------------+--------+------+--------------+ |Social Media| X | | | +------------+--------+------+--------------+
Updated on September 30, 2022Comments
-
JasonDavis over 1 year
I have hacked together a basic example Task List Table with HTML and using jQuery. I have attached some
on change
events to myFilter DropDown Selection Fields
Demo: http://codepen.io/jasondavis/pen/MwOwMX?editors=101
I have a Filter Selection Field for each of these:
- Assigned User
- Task Status
- Milestone
- Priority
- Tags
Independently they all work to get the job done in filtering out non matching results from my Task List Table.
For each Task Row, I store the value of each filterable option in a
Data Attribute
like this example Task Row HTML:<tr id="task-3" class="task-list-row" data-task-id="3" data-assigned-user="Donald" data-status="Not Started" data-milestone="Milestone 1" data-priority="Low" data-tags="Tag 3"> <td>Task title 3</td> <td>11/16/2014</td> <td>02/29/2015</td> <td>Low</td> <td>Milestone 1</td> <td>Donald</td> <td>Tag 3</td> </tr>
So the actual Text for the Task row does not matter because the Task row will not show all the properties. WHat matters is the value stored in the Task Row Data Attributes.
A Task row/record with a
Miledstone
set toMilestone 2
will have a Data Attribute like thisdata-milestone="Milestone 2"
An example JavaScript/jQuery Filter code:
// Task Milestone Dropdown Filter $('#milestone-filter').on('change', function() { var taskMilestone = this.value; if(taskMilestone === 'None'){ $('.task-list-row').hide().filter(function() { return $(this).data('milestone') != taskMilestone; }).show(); }else{ $('.task-list-row').hide().filter(function() { return $(this).data('milestone') == taskMilestone; }).show(); } });
So as I mentioned. I can get each of my "FIlters" to work by thereself, however as soon as I try to apply more than 1 filter at a time, it will not work with this current code.
I would appreciate any help in modifying my code to make a working multi-filter example please?
My current demo is here: http://codepen.io/jasondavis/pen/MwOwMX?editors=101
Update Test 2
After some thought, I am thinking that perhaps I need to store all the current Filter values into variables and then on each
change
event instead of this:return $(this).data('milestone') != taskMilestone;
It would instead need to be more like this...
return $(this).data('milestone') != taskMilestone && $(this).data('priority') != taskPriority && $(this).data('tags') != taskTags && .... for all filters;
Does that sound about right?
Nevermind, just tried this with no luck!
-
JasonDavis almost 9 yearsthis is simply brilliant! I could of never came up with such an elegant solution and apparently nobody else on SO could either! So thank you very much this is going to be very helpful in my Project Management app I am working on.
-
Lucio Paiva almost 9 years@JasonDavis You're welcome! About the due date filter, take a look at moment.js, it's a wonderful library for manipulating date/time.Try posting what you have so far as a new question and maybe we can start from that.