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A
andresmauricioa0001
April 27, 2023
Question

how to add item in list of maps

  • April 27, 2023
  • 1 reply
  • 0 views

Hello,

i have a list of maps,

how do you add new map value?

and 

how do you update an index of repective value map?

this is the rule code (but it do not work):

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

a!localVariables(
local!campos: a!forEach(
items: ri!map,
expression: fv!item.sistema = ri!sistema
),

local!indice: where(local!campos,-1),

local!resultado:if(
local!indice > 0,
if(
a!isNullOrEmpty(ri!permiso),
remove(ri!map,local!indice),
/*update value in list*/
a!update(ri!map,local!indice,a!map(sistema: ri!sistema,permiso:ri!permiso))
),
/*add map to list*/
a!update(ri!map,length(ri!map)+1,a!map(sistema: ri!sistema,permiso:ri!permiso))
),
local!resultado
)

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

    1 reply

    S
    sanchitg0002
    April 27, 2023

    Your logic for updating an index in a list of Map seems to be fine, for adding a map to list you can simply use append() function.

    Take reference from the sample code snippet.

    a!localVariables(
  local!map: {
    a!map(name: "Test", class: 10),
    a!map(name: "Test1", class: 10),
    a!map(name: "Test2", class: 10),
    a!map(name: "Test3", class: 10)
  },
  local!update: a!update(
    local!map,
    { 1, 2 },
    {
      a!map(name: "TEst100", class: 12),
      a!map(name: "TEst200", class: 11)
    }
  ),
  local!add: append(
    local!map,
    {
      a!map(name: "Test5", class: 12),
      a!map(name: "Test6", class: 12)
    }
  ),
  local!add
)

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