convert to csv with incomplete json data

PowerShell Help
1

I am having trouble converting json data to csv.

I have the following json data tha is pulled from a web api and loaded into $EnergyData:

{
    "energyDetails": {
        "timeUnit": "WEEK",
        "unit": "Wh",
        "meters": [
            {
                "type": "Production",
                "values": [
                    {
                        "date": "2015-11-02 00:00:00"
                    },
                    {
                        "date": "2015-11-09 00:00:00"
                    },
                    {
                        "date": "2015-11-16 00:00:00",
                        "value": 2953
                    }
                ]
            }
        ]
    }
}

If I run this code I only get the date column in the csv

$EnergyData = (Invoke-WebRequest "$EnergyUrl").Content | ConvertFrom-Json
$Data = $EnergyData.energyDetails.meters.values | ConvertTo-Csv -Delimiter "," -NoTypeInformation
If($Data -ne $null) { [io.file]::WriteAllLines("$PSScriptRoot\$FileName",$Data) }

How do I get value 2953 into the csv, the other date entries need to be in there too but with a null or “” value.

2

you could use Select-Object cmdlet here. It will read the Value property for the existing and create it with empty value for the others.

$EnergyData.energyDetails.meters.values | Select-Object -Property Date,Value | ConvertTo-Csv -Delimiter "," -NoTypeInformation


            


            

              
              
              
            


            

                
                
              


          

          

            

              



              
                  
                  
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Thank you, this works perfectly, I tried to loop through the values and set any nulls to “0” but I failed. Also I have no idea why Select-Object -Property Date,Value forces the value column to be output to csv but my learning continues. Thans so much for the help. My project moves forward.