3
Need help with syntax during list filtering (lemmy.world)
submitted 1 week ago by [email protected] to c/[email protected]
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I have a list of clothing items and a variable [gender] that contains value for example "♂️" male. Some items on the list of clothing also contain emojis ♀️ or ♂️ in them, something like "Batman suit♂️". I'm trying to exclude all items with ♀️ if "gender==♂️" and vice versa. I've tried to use clothingTop.selectAll.filter(newlist =>newlist.tags.includes([gender])), ald also match(/♀️/i), I'm not sure how to proceed.

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[-] [email protected] 1 points 1 week ago* (last edited 1 week ago)

Something like this worked:

clothingList.Top.selectAll.map(a => a.getName).filter(a => gender.includes('♀️') ? !a.includes('♂️') : !a.includes('♀️')).joinItems('<\option>')
  • .map(a => a.getName) - returns the name of the item, and not the item under it, and not a list since .selectAll returns an object and not a string.
  • filter(a => gender.includes('♀️') ? !a.includes('♂️') : !a.includes('♀️') - checks if the gender is female, if so, then filter out the items with ♂️ (!a.includes('♂️') essentially says if the name doesn't have♂️, then return it), else filter out items with ♀️

Also I'd recommend using $output on the list, so you just have to call clothingList.Top like so:

clothingList // clothing top, bottom, footwear, headwear, accessories, color, pattern
  Top
    $output = [this.selectAll.map(a => a.getName).filter(a => gender.includes('♀️') ? !a.includes('♂️') : !a.includes('♀️')).map(a => `<option value=${this[a]}>${a}</option>`).join('')]
   
***
    Any
    None
    Bikini top♀️
      bikini top
    Blouse♀️
      blouse
[-] [email protected] 1 points 1 week ago

Thanks for the detailed explanations. I'm getting this error: "An error has occurred somewhere in your code (in lists or HTML): There's a problem with the syntax of this expression: '[clothingList.Top.selectAll.map(a => a.getName).filter(a => gender.includes('♀️') ? !a.includes('♂️') : !a.includes('♀️')).joinItems('<\option>')]'. Here's the message that was returned when execution failed: Cannot read properties of undefined (reading 'includes').

[-] [email protected] 1 points 1 week ago

On my end, there doesn't seem to be any problems? What method are you using, directly on the HTML, the $output method, or both? If both, then there might be a problem.

[-] [email protected] 1 points 1 week ago

I put [clothingList.Top] in the HTML and $output line in the lists and it works. I just need to change the item references now in the lists itself. clothingList.Top[clothingGroup][clothingTop].joinItems(", ") doesn't work anymore since there are no items inside to join.

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this post was submitted on 27 May 2025
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