Forum Discussion

manohar's avatar
manohar
Contributor
3 years ago
Solved

Filter expression on arrays

hi there, I have this json

[
  {
    "filename": [
      "Coupa_Supplier_SB_Tax_Cert_PO_4501923290",
      "Coupa_Supplier_SB_Tax_Cert_PO_4501888888"
    ],
    "id": 16755,
    "docid": [
      "FOL18          4 EXT48000000000761",
      "FOL18          4 EXT48000000000760",
      "FOL18          4 EXT48000000000759"
    ],
    "docname": [
      "Coupa_Supplier_SB_Tax_Cert_PO_4501999999",
      "Coupa_Supplier_SB_Tax_Cert_PO_4501923290",
      "Coupa_Supplier_SB_Tax_Cert_PO_4501888888"
    ],
    "docext": [
      "pdf",
      "pdf",
      "pdf"
    ]
  }
]

I need to filter docext, docname, docid based on if filename exist in docname. so end json shoud be

[
  {
    "filename": [
      "Coupa_Supplier_SB_Tax_Cert_PO_4501923290",
      "Coupa_Supplier_SB_Tax_Cert_PO_4501888888"
    ],
    "id": 16755,
    "docid": [
      "FOL18          4 EXT48000000000760"
    ],
    "docname": [
      "Coupa_Supplier_SB_Tax_Cert_PO_4501923290",
    ],
    "docext": [
      "pdf"
    ]
  }
]

I understand I need to use filter expression but need some guidance.

Thanks
Manohar

4 Replies

  • Aleksandar_A's avatar
    Aleksandar_A
    Contributor III
    3 years ago
    Copy Link

    Hi @manohar.

    In the example you have listed, If i understand correctly don’t we also need to include the filename: Coupa_Supplier_SB_Tax_Cert_PO_4501888888? Because it exists in the docname array?

    If yes, then you can use the following expressions:

    $docname.filter((x,ind,arr) => $filename.indexOf(x) != -1)
$docid.filter((x,ind) => $filename.indexOf($docname[ind]) != -1)
$docext.filter((x,ind) => $filename.indexOf($docname[ind]) != -1)

    Let me know if this helps.

    BR,
    Aleksandar.

    • manohar's avatar
      manohar
      Contributor
      3 years ago
      Copy Link

      Hi @AleksandarAngelevski, thank you very much. that helped.

      I am actually looking for docnames that doesn’t exist in filename array. so I removed ! from your expression;

      $docname.filter((x,ind,arr) => $filename.indexOf(x) == -1)
      $docid.filter((x,ind) => $filename.indexOf($docname[ind]) == -1)
      $docext.filter((x,ind) => $filename.indexOf($docname[ind]) == -1)

      but looks like my data is coming bit differently, the docname are coming with characters, how can I compare with out converting to string to replace these characters?

      [
  {
    "filename": [
      "Coupa_Supplier_SB_Tax_Cert_PO_4501923290",
      "Coupa_Supplier_SB_Tax_Cert_PO_4501888888"
    ],
    "id": 16755,
    "docid": [
      "FOL18          4 EXT48000000000761",
      "FOL18          4 EXT48000000000760",
      "FOL18          4 EXT48000000000759"
    ],
    "docname": [
      "Coupa_Supplier /SB_Tax_Cert PO #4501999999",
      "Coupa_Supplier_SB_Tax_Cert_PO 4501923290",
      "Coupa_Supplier_SB_Tax_Cert_PO_4501888888"
    ],
    "docext": [
      "pdf",
      "pdf",
      "pdf"
    ]
  }
]

      Also looks like my destination system accepts only _ so after match, need to replace spaces, #, / to _.

      Thanks
      Manohar

      • Aleksandar_A's avatar
        Aleksandar_A
        Contributor III
        3 years ago
        Copy Link

        If you need to replace them for the target system, you can do that before the filtering using regex.

        The following expression might not catch all of your scenarios but should be a good starting point:

        $docname.map(x => x.replace(/(#|\/|\s){1,2}/g,'_'))

        BR,
        Aleksandar 🙂