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PiPiLee
New Participant
July 26, 2018
Solved

conditional data binding question

  • July 26, 2018
  • 6 replies
  • 6707 views

Hi, guys

I'm new bee in LiveCycle Designer. I got questions about conditional data binding question in adobe Live Cycle  designer ES3.

My XML files structure is like following:

<item>

     <Name>name1</Name>

     <Type>A</Type>

     <Amount>10</Amount>

</item>

<item>

     <Name>name2</Name>

     <Type>B</Type>

     <Amount>20</Amount>

</item>

<item>

     <Name>name3</Name>

     <Type>B</Type>

     <Amount>30</Amount>

</item>

........

And now I want to display items only with type= A . How can I get this conditional data binding?

I've already use SOM predicates in item's Data Binding expression like this:  $.item.[Type=='A']   but it return syntax error.

BR, PiPi Li

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    Best answer by _Bruce_Robertson

    Hi,

    When you use $.item.[Type=='A'], that is with square brackets then the expression is expected to be a FromCalc expression, which means you need to use double quotes, i.e. $.item.[Type=="A"].  The JavaScript equivalent would be $.item.(Type.value=='B') ... using the round brackets.  I do tend to stick with FormCalc for predicates, it is meant to be a little faster.

    Regards

    Bruce

    6 replies

    ulibaehr
    ulibaehr
    New Participant
    July 27, 2018

    That appears unnecessary to me.

    Conditional bindings without any scripting perfectly perform the task. You do not need to script for this kind of task.

    I just checked with one of my example forms:

    $.Legobrick.[Color<>"green"]

    works perfectly to bind only subforms where the underlying element "Color" does not have the value "green".

    arthurf48713214
    arthurf48713214
    New Participant
    July 27, 2018

    exactly.

    P
    PiPiLeeAuthor
    New Participant
    July 27, 2018

    Hi, Arthur

    Thanks for ur reply. Do you mean add check script to Event?

    BR, PiPi Li

    P
    PiPiLeeAuthor
    New Participant
    July 27, 2018

    Hi Bruce,

    $.item.[Type=="A"] still can not work. But the JavaScript predication $.item.(Type.value=='B') works. Thanks so much.

    BR, PiPi Li

    _Bruce_Robertson
    _Bruce_RobertsonAccepted solution
    New Participant
    July 26, 2018

    Hi,

    When you use $.item.[Type=='A'], that is with square brackets then the expression is expected to be a FromCalc expression, which means you need to use double quotes, i.e. $.item.[Type=="A"].  The JavaScript equivalent would be $.item.(Type.value=='B') ... using the round brackets.  I do tend to stick with FormCalc for predicates, it is meant to be a little faster.

    Regards

    Bruce

      N
      NvAlan
      New Participant
      October 12, 2022

      Hi,

      In case of having items: A, B, C, and  I want to display items with type = A, type = B . How can I get this conditional data binding?

      Thanks!

      arthurf48713214
      arthurf48713214
      New Participant
      July 26, 2018

      Hi Pipi Li,

      i´am not 100% sure but i thing you can use something like this check the value all type of your tree :

      $data.resolveNodes('RootNode.item[*].Type') .item(*).value; // i thing for every item, it should return his value then you can check this value ; if ....,item(*).value == "A".

      Arthur

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