Search can't be correctly performed with some cyrillic characters in input string since using DT2.2+

AlexFedotenkov

Link to test case: https://service-prim.ru/eshop/albums-copy
Debugger code (debug.datatables.net):
Error messages shown:
Description of problem:
Hello. After upgrade with new DT, the cyrillic character "й" in search input sting gives incorrect result. In my test case some records of 10th column contains the word "детский", which has "й" at the ending. When I run code in Chrome DevTools like
itemsTable.column(10).search('детский').draw() in console I've got an empty result. If I just remove this last character and run itemsTable.column(10).search('детски').draw() everything goes right. At the same time code itemsTable.column(10).search('й').draw() also gives strange result which includes some records even not containing the words with "й". Is it became a kind of special character? As for another characters with the same effect, I didn't tested thoroughly, but looks like working good.
However in DT1.10 there's no problem with it.
https://service-prim.ru/eshop/albums - here is the page running with old DT10.1 with the same dataset as my test one. And if I perform CatalogTable.column(10).search('детский').draw() I'll see the correct result.
Does anybody know the solution?
Thanks.

allan

I don't immediately know what is going wrong on your page. I've just tried a test here and it works as expected.

Could you have your page load the non-minified version of DataTables please? I'll try to trace through what is happening.

Allan

AlexFedotenkov

Thanks for quick responce. I've done what you asked for and also tried to dig deeper. First, in your sandbox I've changed JQuery library to the same version that I have in my project but it doesn't help. Another difference is how our tables get data in. Your one from the DOM elements, but my gets from 'data' option. Also the storage format is a bit different. Sandbox table contains strings ('blabla'), but my table contains the arrays (['blabla']) in its cells. In my table I use deferRender but works the same if set to false.
Appreciate your attention.
Alex.

kthorngren

Another difference is how our tables get data in. Your one from the DOM elements, but my gets from 'data' option

Update Allan's test case with a sample of your Javascript sourced data. Remove the tbody from the HTML tab and use data to populate the Datatable. Can you recreate the problem? Post the updated test case URL.

The test case just needs to replicate the issue. It doesn't need all the formatting, etc your page has. It will be easier to debug. Unless of course that is what is causing the issue.

The jQuery version shouldn't matter.

Kevin

AlexFedotenkov

Just tried the following: replaced an array ['детский'] with a string 'детский' at nearest cell value in my project
itemsTable.cell(2, 10).data('детский').draw()
and now this cell is in the search result! So what's the reason of conflict of the character "й" (only this one among all cyrillic alphabet) with array representation? Why DT1.10 version has no such problem and works fine with both formats (either string or array) ?

Alex

kthorngren

I updated Allan's test case and used ['детский'] populating the Datatable with an array of rows using data. It still seems to work.
https://live.datatables.net/cuwulugu/3/edit

Please update the test case to replicate the issue so we can help debug.

Kevin

kthorngren

Hang on. I didn't actually add an array to the cell. Let me take a further look

Kevin

kthorngren

Here is an updated test cast:
https://live.datatables.net/tibekiwi/1/edit

var data = [ [['детский']], ['test'] ];
var table = new DataTable('#example', {
  data: data,
  initComplete: function ( settings ) {
    console.log(settings.aoData[0])
  }
});

table.column(0).search('детский').draw();

The issue can be seen. @allan will need to take a look.

Kevin

allan

This is a great example of an edge case that I'd never have thought of myself!

The data for the cell is being given as an array: ['детский']. Now that displays okay, because .toString() of that is детский, however the diacritic handling doesn't work, because it is an array, not a string.

Making the cell data a string allows it to work as expected: https://live.datatables.net/tibekiwi/2/edit .

Or, if it must be an array, using columns.data to indicate that you want the first element of the array works: https://live.datatables.net/tibekiwi/3/edit .

Or, again as an array, you could use columns.render to render it down to a string: https://live.datatables.net/tibekiwi/4/edit and allow it to work.

That it worked in 1.x is down to luck. It certainly wasn't intended that way!

I think I consider the original example to be a misconfiguration (the data is not was is specified). Any of my three suggestions will address it though.

Hope that makes sense!

Allan

AlexFedotenkov

Hello, Allan.

Thanks for fast responce. My case a bit more complex and arrays are very suitable. Have you took a look on my test link? It's small shop and it has filters for goods at left side. Checking a boxes near keywords runs column(x).search('keyword').draw(). Filters application is a subject of this issue. Here is my data for a row:

[
                "00000125568",
                [
                    "https://service-prim.ru/content/upload/catalog/images/00000125568.jpg"
                ],
                "QY6-8002 Печатающая головка (чёрная) Canon Pixma-G1400/G2400/G3400 [ориг]",
                "",
                "5450.00",
                "1",
                "",
                [
                    "Canon"
                ],
                [
                    ""
                ],
                [
                    "печатающая головка"
                ],
                [
                    "оригинальный"
                ],
                [
                    ""
                ],
                [
                    "Принтер Canon G1400",
                    "МФУ Canon G2400",
                    "МФУ Canon G3400"
                ]
            ],...

An idea is to use multiple values in a single cell. Each value may have unpredictable characters. Moreover I use this values to build a whole column lists of unique search words in initComplete. Your suggestion of using columns.data leads to modification of original cell data, columns.render is good, but I don't know how to set in `-init columnDefs.targets' all columns within a range form 7 to prior of last. Maybe the solution is to set renderer (is it possible?) or replace original data with rendered one for each cell afler I get data for search list in initComplete.
Anyway previuosly in 1.x any search string i.e. "Принтер Canon G1400" or "МФУ Canon G2400" or "МФУ Canon G3400" from my example above displays a row in serach result. DT2+ works the same except words shloldn't include character "й". You've mentioned about the diacritic handling but replacing "й" with "и" is wrong, cause it's different letters in russian, It's like to try to substitute "i" with "y". We never use "детскии" instead of "детский". So maybe there's some bug in DT2 source code that needs to be fixed?
Sorry if you got bored ))

Alex.

AlexFedotenkov

Today I've posted a new comment but it lost when trying to edit. Can you see it from your side? It is really scares me of even to thought that I need to write it again ((

allan

It was caught in the auto spam filter for some reason. I've allowed it through now.

The fact that it worked with 1.x was pure luck - it was never designed to specifically work that way.

The diacritic handling is meant to be to allow search to be easier for end users, for example, typing "creme brulee" should match "crème brûlée". I'll admit this is a bit of a lazy "westerner" feature, but it seems to work well and was requested a fair amount.

It is possible to disable the diacritic handling by doing:

DataTable.util.diacritics(str => str);

And that allows the original test case to work: https://live.datatables.net/tibekiwi/7/edit .

I would urge caution though - you are passing an array to the display there. There is no guarantee that it won't break in some unexpected way in future. The display is expecting a string, not an array.

Allan

kthorngren

I don't know how to set in `-init columnDefs.targets' all columns within a range form 7 to prior of last.

You can set a classname for the last column to be used as the columnDefs.targets select using jQuery :not(). You can optionally use orthogonal data to join() the array for the filter and/or display operations. See this updated test case:
https://live.datatables.net/tibekiwi/8/edit

Orthogonal data will also allow yo0u to adjust how the array is displayed in case you want to place each element on separate lines, for example.

Kevin