How can I convert expression?

RE: How can I convert expression?

Mike Schmitt — Fri, 07 Apr 2023 14:36:11 GMT

[quote userid="91576" url="~/discussions/f/new-to-appian/28312/how-can-i-convert-expression/110711#110711"]by using the Keys function I get all of the keys, which I do not want.[/quote]

There was no way of telling this was a constraint from your original post. Therefore it might be better if you actually talk about your requirements in general, instead of posting a short snippet with no context and expecting us to guess at the details you didn't happen to share originally.

RE: How can I convert expression?

Peter Lewis — Thu, 06 Apr 2023 21:12:01 GMT

That's fair, but if you're explicitly choosing certain fields, I think it's easier to just define them yourself. Instead of using a!keys, just put a list with the fields you plan to display.

RE: How can I convert expression?

Jesús Hormigos — Thu, 06 Apr 2023 20:50:18 GMT

a!localVariables(
  /* Example */
  local!data: {
    a!map(Note: "Note1", Name: "Name1", Field: 123),
    a!map(Note: "Note2", Name: "Name2", Field: 123)
  },
  local!fields: { "Note", "Name" }, /* Fields required */
  a!gridField(
    data: local!data,
    columns: a!forEach(
      items: local!fields,
      expression: a!gridColumn(
        label: fv!item,
        value: index(fv!row, fv!item, "")
      )
    )
  )
)

Please, test it and let me know if this solve your problem.

RE: How can I convert expression?

petel0001 — Thu, 06 Apr 2023 20:48:52 GMT

However, by using the Keys function I get all of the keys, which I do not want.
Using your example I've added a description key, I do not want that key to be displayed.
In the local!data I also have the primary key value for the record, not too useful fore the end user either.

a!localVariables(
  local!data: {
    a!map(note: "Sample Note", name: "Sample Name", description: "i am a description"),
    a!map(note: "Sample Note 2", name: "Sample Name 2", description: ""),
  },
  a!gridField(
    data: local!data,
    columns: a!forEach(
      items: a!keys(index(local!data, 1, {})),
      expression: a!gridColumn(
        label: fv!item,
        value: index(fv!row, fv!item, "")
      )
    )
  )
)

RE: How can I convert expression?

Peter Lewis — Thu, 06 Apr 2023 20:42:50 GMT

You probably want to use the a!keys() function. Here's an example:

a!localVariables(
  local!data: {
    a!map(note: "Sample Note", name: "Sample Name"),
    a!map(note: "Sample Note 2", name: "Sample Name 2"),
  },
  a!gridField(
    data: local!data,
    columns: a!forEach(
      items: a!keys(index(local!data, 1, {})),
      expression: a!gridColumn(
        label: fv!item,
        value: index(fv!row, fv!item, "")
      )
    )
  )
)