Indexing to Lis of text String

RE: Indexing to Lis of text String

Stefan Helzle — Fri, 29 Jul 2022 05:55:34 GMT

This seems like that this is a list of lists where each sub-list contains one text. Then trying to index the first item will basically return the first character of each text. a!flatten() is made to solve this kind of issue. Then your approach will work.

RE: Indexing to Lis of text String

venkyuppala09 — Fri, 29 Jul 2022 05:51:29 GMT

Yes your correct but it won't work when you reading the data from Excel as the data type is like (list of list of.. variants), try to get the values using different index and take separate local variables for each index output.

RE: Indexing to Lis of text String

deepakg681722 — Fri, 29 Jul 2022 05:41:37 GMT

a!localVariables(
  local!uploadedFile,
  local!exceldata,
  a!sectionLayout(
    contents: {
      a!textField(
        value:local!uploadedFile,
        saveInto: {
          local!uploadedFile,
          a!save(
            local!exceldata,
            index(
              readexcelsheet(
                excelDocument:todocument(57745), /*57745 is the document id. Please replace it with yours*/
                sheetNumber:0,
                startRow: 0
              ),
              "result",
              {}
            )
          )
        }
      ),
      a!gridField(
        label: "Excel Data :",
        emptyGridMessage: "Please Upload a File with Values",
        data: remove(local!exceldata, 1),
        columns: a!forEach(
          items: local!excelData[1].values,
            expression: a!gridColumn(label: fv!item, value: index(fv!row.values,fv!index,{}))
        ),
        showWhen: not(a!isNullOrEmpty(local!uploadedFile))
      )

    }
  )
)

Please refer the above code

RE: Indexing to Lis of text String

sivasuryap0002 — Fri, 29 Jul 2022 05:39:42 GMT

Thank you will check that

RE: Indexing to Lis of text String

deepakg681722 — Fri, 29 Jul 2022 05:38:23 GMT

It is returning blank because the file is not in Appian System. you are just uploading it and the uploaded file will be in Appian system once you click on submit button. Make Sure, the interface where you are uploading the file is either a start form of the process model or a user input task.

Just to check the code, you can manually upload the excel into Appian and copy the id of that document and put it into excelDocument configuration of the ReadExcelSheet function.

RE: Indexing to Lis of text String

sivasuryap0002 — Fri, 29 Jul 2022 05:25:07 GMT

a!localVariables(
  local!exceldata,
  a!sectionLayout(
    contents: {
      a!fileUploadField(
        label: "Upload a File :",
        target: cons!IT_FOLDER,
        fileNames: "File Reading-File Uploaded on " & text(now(), "ddmmyyhhmmss"),
        fileDescriptions: "File Reading Interface Testing on File Uploaded on " & text(now(), "ddmmyyhhmmss"),
        maxSelections: 1,
        value: ri!uploadedFile,
        saveInto: {
          ri!uploadedFile,
          a!save(
            local!exceldata,
            index(
              readexcelsheet(
                excelDocument:todocument(ri!uploadedFile),
                sheetNumber:0,
                startRow: 0
              ),
              "result",
              {}
            )
          )
        },
        required: true(),
        validations: if(
          contains({ "csv", "xlsx" }, fv!files.extension),
          {},
          "Only CSV,XLSX formats files should be uploaded but uploaded file is of format ." & fv!files.extension
        )
      ),
      a!gridField(
      label: "Excel Data :",
      emptyGridMessage: "Please Upload a File with Values",
      data: remove(local!exceldata, 1),
      columns: a!forEach(
      items: local!excelData[1].values,
      expression: a!gridColumn(label: fv!item, value: index(fv!row,fv!index,{}))
      ),
      showWhen: not(a!isNullOrEmpty(ri!uploadedFile))
      )
      
    }
  )
)

I have tried that but in the save into, I don't know why? but the readexcelsheet function is not working.
Should we not use readexcelsheet in saveinto ?

RE: Indexing to Lis of text String

deepakg681722 — Thu, 28 Jul 2022 06:57:43 GMT

a!localVariables(
  local!excelData: index(readexcelimportfile(
    excelDocument: todocument(57745), /*put excel document id instead of 57745*/
    sheetNumber:0,
    startRow:0
  ),"result",{}),
  a!gridField(
    data: remove(local!excelData,1),
    columns: {
      a!forEach(
        items: local!excelData[1].values,
        expression: a!gridColumn(
          label: fv!item,
          value: index(fv!row.values,fv!index,{})
        )
      )
    }
  )
)

Please refer this code and see if it works.

RE: Indexing to Lis of text String

deepakg681722 — Thu, 28 Jul 2022 06:49:35 GMT

Oh you want to create a grid based on dynamic Excel. Let me write the code and will let you know ASAP.

RE: Indexing to Lis of text String

sivasuryap0002 — Thu, 28 Jul 2022 06:48:28 GMT

I am trying to create a dynamic excel reader and use the data in a grid.

RE: Indexing to Lis of text String

deepakg681722 — Thu, 28 Jul 2022 06:46:47 GMT

IN the code you provided, you are using some excel file. What you want to get from that and what is there in that file.

RE: Indexing to Lis of text String

deepakg681722 — Thu, 28 Jul 2022 06:43:00 GMT

a!localVariables(
local!text:{"How","Are","You"},
index(local!text,2,{})
)

It will work?

RE: Indexing to Lis of text String

sivasuryap0002 — Thu, 28 Jul 2022 06:40:50 GMT

The input is like : "How","Are","You" (which is of type list of text strings),
I am trying to get only 1 at a time using indexing (either "How" or "Are" or "You"), But I am getting the "H","A","R" if i am using index 1

RE: Indexing to Lis of text String

deepakg681722 — Thu, 28 Jul 2022 06:36:49 GMT

What is the input and what output you are expecting?

RE: Indexing to Lis of text String

sivasuryap0002 — Thu, 28 Jul 2022 06:32:15 GMT

Could you please help me in with the issue I am facing ?
"I am trying to use indexing for type " List of Text String " but the output i am getting not the expected output"

RE: Indexing to Lis of text String

Stefan Helzle — Mon, 25 Jul 2022 06:33:15 GMT

Sorry, but again, while this behaviour works most of the times, it is no documented and has edge cases in which it does not work and is super difficult to debug.

RE: Indexing to Lis of text String

Harshit Bumb (Appyzie) — Mon, 25 Jul 2022 05:53:24 GMT

Try using the a!flatten() function to remove this multiple levels of lists and then it should be easier.

RE: Indexing to Lis of text String

sivasuryap0002 — Mon, 25 Jul 2022 05:35:04 GMT

index(local!exceldata, "result", "values", 1, {}) is equivalent to
index(index(index(local!exceldata, "result",{}),"values",{}),1,{})

RE: Indexing to Lis of text String

deepakg681722 — Mon, 25 Jul 2022 03:43:56 GMT

Could you please put some light on the functionality what you are trying to achieve. What is the output you are getting and what you are expecting for the same?

RE: Indexing to Lis of text String

Stefan Helzle — Sat, 23 Jul 2022 15:41:24 GMT

This is confusing. Why do you use more than three parameters with the index function? The behaviour with more than three parameters is undefined.

RE: Indexing to Lis of text String

sivasuryap0002 — Sat, 23 Jul 2022 15:02:03 GMT

Hi Stefan,
Here is my code.

a!localVariables(
  local!exceldata: readexcelsheet(
    excelDocument: cons!IT_SAMPLE_FILE,
    sheetNumber: 0,
    startRow: 0,
    /*stopReadingAtFirstBlankRow: false(),*/
    /*pagingInfo: a!pagingInfo(startIndex: 1, batchSize: 0)*/
    
  ),
  local!datalength: length(
    index(local!exceldata, "result", "values", {})
  ),
  local!headers: index(local!exceldata, "result", "values", 1, {}),
  local!filecdt: a!forEach(
    items: local!headers[1],
    expression: {
      fv!item & " : " & a!forEach(
        items: 2,
        /*enumerate(local!datalength - 1) + 2,*/
        expression: a!forEach(
          items: index(
            local!exceldata,
            "result",
            "values",
            fv!item,
            {}
          ),
          expression: a!forEach(
            items: fv!item,
            expression: a!forEach(
              items: fv!item,
              expression: fv!item
            )
          )
        )
      )
    }
  ),
  local!filecdt
)

RE: Indexing to Lis of text String

Stefan Helzle — Sat, 23 Jul 2022 14:59:02 GMT

Can you share your code? I am sure I understand what you do and what your goal is.