Concat() field not working Editable Grid

Why do you still try to do this when displaying values? I can remember that I already explained to you that you need to change this in the underlying data, but not in the value parameter of an input field!

Add the concat command to both fields "idPedido" and "Material" to the saveInto.

And, by the way, in case this should become your primary key in the DB, I need to tell you that humans are generally very bad in creating unique values.

Thanks Stefan, now I remember that something similar happened before. 

I tried to put it in the finalSaveInto (below of append, like the auto-generated id for each row) but it doesnt recognise the fv!item 

What is wrong with my code now? Do I have to change the fv!item for another expression? I cannot reference to a rule input because I want to concatenate both values of the editable grid

Here is my code (lines 60, 197). Any correction will be useful

a!localVariables(
  local!LineasPedido: {},
  {
    a!sectionLayout(
      label: "Líneas Pedido",
      labelIcon: "list-alt-solid",
      contents: {
        a!gridLayout(
          label: "A continuación, incorpore las líneas de pedido correspondientes y pulse el botón de creación",
          headerCells: {
            a!gridLayoutHeaderCell(label: "Linea Pedido"),
            a!gridLayoutHeaderCell(label: "Pedido"),
            a!gridLayoutHeaderCell(label: "Proveedor"),
            a!gridLayoutHeaderCell(label: "Material"),
            a!gridLayoutHeaderCell(label: "Clave Única"),
            a!gridLayoutHeaderCell(label: "Cantidad"),
            a!gridLayoutHeaderCell(label: "Precio Unitario"),
            a!gridLayoutHeaderCell(label: "Importe Total"),
            a!gridLayoutHeaderCell()
          },
          columnConfigs: {
            a!gridLayoutColumnConfig(width: "DISTRIBUTE"),
            a!gridLayoutColumnConfig(width: "DISTRIBUTE"),
            a!gridLayoutColumnConfig(width: "DISTRIBUTE"),
            a!gridLayoutColumnConfig(width: "DISTRIBUTE"),
            a!gridLayoutColumnConfig(width: "DISTRIBUTE"),
            a!gridLayoutColumnConfig(width: "DISTRIBUTE"),
            a!gridLayoutColumnConfig(width: "DISTRIBUTE"),
            a!gridLayoutColumnConfig(width: "DISTRIBUTE"),
            a!gridLayoutColumnConfig(width: "ICON")
          },
          rows: a!forEach(
            items: local!LineasPedido,
            expression: a!gridRowLayout(
              contents: {
                a!textField(
                  value: fv!item['recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{fcfa4b36-4398-4430-8055-ecfa59daf13a}idLineaPedido'],
                  saveInto: {
                    fv!item['recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{fcfa4b36-4398-4430-8055-ecfa59daf13a}idLineaPedido']
                  }
                ),
                a!textField(
                  value: fv!item['recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{71427dbb-12db-4f83-bd99-f625bf9af271}idPedido'],
                  saveInto: {
                    fv!item['recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{71427dbb-12db-4f83-bd99-f625bf9af271}idPedido']
                  }
                ),
                a!textField(
                  value: fv!item['recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{464f0883-d6d5-4c58-b054-4de8e9e99902}Proveedor'],
                  saveInto: {
                    fv!item['recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{464f0883-d6d5-4c58-b054-4de8e9e99902}Proveedor']
                  }
                ),
                a!textField(
                  value: fv!item['recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{69e9a834-b2fb-4f35-a36d-3c526c97f4ac}Material'],
                  saveInto: {
                    fv!item['recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{69e9a834-b2fb-4f35-a36d-3c526c97f4ac}Material']
                  }
                ),
                a!textField(
                  value: fv!item['recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{caf81eeb-f499-4adc-b078-f2692f6e38b2}ConcatPedidoMaterial']
                    ,
                  saveInto: {
                    fv!item['recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{caf81eeb-f499-4adc-b078-f2692f6e38b2}ConcatPedidoMaterial']
                  }
                ),
                a!integerField(
                  value: fv!item['recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{e78c5b35-026f-4713-8404-05077c6c9152}Cantidad'],
                  saveInto: {
                    fv!item['recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{e78c5b35-026f-4713-8404-05077c6c9152}Cantidad'],
                    a!save(
                      fv!item['recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{beb59a89-a332-46d3-b718-a8285f58f942}Importe'],
                      if(
                        or(
                          isnull(
                            fv!item['recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{e78c5b35-026f-4713-8404-05077c6c9152}Cantidad']
                          ),
                          isnull(
                            fv!item['recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{47f4bf32-2e41-4c5a-a7e7-9fc7786bd753}PrecioUnit']
                          )
                        ),
                        0,
                        fv!item['recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{e78c5b35-026f-4713-8404-05077c6c9152}Cantidad'] * fv!item['recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{47f4bf32-2e41-4c5a-a7e7-9fc7786bd753}PrecioUnit']
                      )
                    )
                  },
                  required: true,
                  validations: {
                    if(
                      a!isNotNullOrEmpty(
                        fv!item['recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{e78c5b35-026f-4713-8404-05077c6c9152}Cantidad']
                      ) = false,
                      "",
                      if(
                        fv!item['recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{e78c5b35-026f-4713-8404-05077c6c9152}Cantidad'] < 1,
                        "La cantidad debe ser superior a cero",
                        ""
                      )
                    )
                  }
                ),
                a!floatingPointField(
                  value: fv!item['recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{47f4bf32-2e41-4c5a-a7e7-9fc7786bd753}PrecioUnit'],
                  saveInto: {
                    fv!item['recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{47f4bf32-2e41-4c5a-a7e7-9fc7786bd753}PrecioUnit'],
                    a!save(
                      fv!item['recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{beb59a89-a332-46d3-b718-a8285f58f942}Importe'],
                      if(
                        or(
                          isnull(
                            fv!item['recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{e78c5b35-026f-4713-8404-05077c6c9152}Cantidad']
                          ),
                          isnull(
                            fv!item['recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{47f4bf32-2e41-4c5a-a7e7-9fc7786bd753}PrecioUnit']
                          )
                        ),
                        0,
                        fv!item['recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{e78c5b35-026f-4713-8404-05077c6c9152}Cantidad'] * fv!item['recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{47f4bf32-2e41-4c5a-a7e7-9fc7786bd753}PrecioUnit']
                      )
                    )
                  },
                  required: true,
                  validations: {
                    if(
                      a!isNotNullOrEmpty(
                        fv!item['recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{47f4bf32-2e41-4c5a-a7e7-9fc7786bd753}PrecioUnit']
                      ) = false,
                      "",
                      if(
                        fv!item['recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{47f4bf32-2e41-4c5a-a7e7-9fc7786bd753}PrecioUnit'] < 0,
                        "El precio unitario debe ser superior a cero",
                        ""
                      )
                    )
                  }
                ),
                a!floatingPointField(
                  value: if(
                    or(
                      isnull(
                        fv!item['recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{e78c5b35-026f-4713-8404-05077c6c9152}Cantidad']
                      ),
                      isnull(
                        fv!item['recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{47f4bf32-2e41-4c5a-a7e7-9fc7786bd753}PrecioUnit']
                      )
                    ),
                    0,
                    fv!item['recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{e78c5b35-026f-4713-8404-05077c6c9152}Cantidad'] * fv!item['recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{47f4bf32-2e41-4c5a-a7e7-9fc7786bd753}PrecioUnit']
                  ),
                  saveInto: {
                    fv!item['recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{beb59a89-a332-46d3-b718-a8285f58f942}Importe']
                  },
                  required: true,
                  validations: {
                    if(
                      a!isNotNullOrEmpty(
                        fv!item['recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{beb59a89-a332-46d3-b718-a8285f58f942}Importe']
                      ) = false,
                      "",
                      if(
                        fv!item['recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{beb59a89-a332-46d3-b718-a8285f58f942}Importe'] < 0,
                        "El importe debe ser superior a cero",
                        ""
                      )
                    )
                  },
                  align: "RIGHT"
                ),
                a!richTextDisplayField(
                  value: {
                    a!richTextIcon(
                      icon: "times-circle",
                      link: a!dynamicLink(
                        value: remove(local!LineasPedido, fv!index),
                        saveInto: local!LineasPedido
                      ),
                      linkstyle: "STANDALONE",
                      color: "NEGATIVE"
                    )
                  }
                )
              }
            )
          ),
          addrowlink: a!dynamicLink(
            label: "Añadir nueva Línea de Pedido",
            saveInto: a!save(
              target: local!LineasPedido,
              value: append(
                local!LineasPedido,
                'recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido'(
                  'recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{71427dbb-12db-4f83-bd99-f625bf9af271}idPedido': ri!record['recordType!{3c95c0e4-e69d-43f6-b485-e72b24252af7}CPF Maestro Pedidos.fields.{7309402c-2312-4a4e-bdaa-5654789bffb2}idPedido'],
                  'recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{464f0883-d6d5-4c58-b054-4de8e9e99902}Proveedor': ri!record['recordType!{3c95c0e4-e69d-43f6-b485-e72b24252af7}CPF Maestro Pedidos.fields.{e11e6206-fc23-4a4b-9819-4db5a5bab685}nomProveedor'],
                  'recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{121ba298-9b36-4826-a191-72811974ee3c}createdOn': now() + intervalds(2, 0, 0),
                  'recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{4d0599e0-d6d6-4ad2-9a4a-8e7f3c270de9}createdBy': loggedInUser(),
                  'recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{fcfa4b36-4398-4430-8055-ecfa59daf13a}idLineaPedido': count({ local!LineasPedido }) + 1,
                  'recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{caf81eeb-f499-4adc-b078-f2692f6e38b2}ConcatPedidoMaterial': concat(
                    fv!item['recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{71427dbb-12db-4f83-bd99-f625bf9af271}idPedido'],
                    "-",
                    fv!item['recordType!{495578a9-1b23-4253-8145-6418faabe727}CPF Lineas Pedido.fields.{69e9a834-b2fb-4f35-a36d-3c526c97f4ac}Material']
                  ) 
                  
              
                 
                )
              )
            )
          )
        )
      }
    ),
    a!buttonLayout(
      primaryButtons: {
        a!buttonWidget(
          label: "Completar Creación Pedido",
          saveInto: a!save(
            ri!recordLineasPedido,
            local!LineasPedido
          ),
          submit: true,
          style: "PRIMARY",
          validate: true
        )
      },
      secondaryButtons: {
        a!buttonWidget(
          label: "Cancelar",
          value: true,
          saveInto: ri!cancel2,
          submit: true,
          style: "NORMAL",
          validate: false
        )
      }
    )
  }
)

I repeat myself: "Add the concat command to both fields "idPedido" and "Material" to the saveInto."

There is a reason why I mentioned these two fields and not the addRowLink.

You probably want the value "ConcatPedidoMaterial" to update whenever the user modifies any of the two other values.

Alright, I will try. I have another question related with this. In the end, I MUST NOT SHOW the value of the concatPedidoMaterial in the interface (editable grid), but i have to save it in my correspondant record line.

Which way is the best practice to do it? Can I save it in the addrowlink? If that is the case, which expression should I use? (the fv!item is not recognised inside the append), as I shown in my last code capture

When following my advice, you modify the underlying data. And that is completely independent of whether you display data data or not. That is the whole trick here. Data is data, and is modified on that level. Displaying that data is a whole different topic.