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Super User
Super User

Append to Array Variable action is not working

This is not complex.  But it doesnt work.  Whats the deal?

 

Simplified for sake of example:

 

image.png

 

image.png

 

The format of the ouput is perfect.  The action lies.  Why?

 

image.png

2 ACCEPTED SOLUTIONS

Accepted Solutions
Dual Super User
Dual Super User

Re: Append to Array Variable action is not working

@martinav 

 

You would have to do a for each on the select action output as well

 

After your select action

add a loop using output from select action

and within that loop use append to array

expression for append to array would just be "item()"

 

Regards,

Reza Dorrani

 

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly

 

 

View solution in original post

Super User
Super User

Re: Append to Array Variable action is not working

@RezaDorrani ,

 

I was just about to give this up...  It took me forever to get what you were trying to tell me.  I would love to know how you knew how to do this.  This is ENTIRELY non-intuitive.  Even with you explaining it, and having used ALL of these actions and commands before, it took a couple of hours to get it all together.  I have no idea how this was ever figured out.  Its almost as difficult as the first dude figured out calculus.

 

Here is what finally worked, and when I review, its exactly what you were describing.

 

image.png

 

 

View solution in original post

9 REPLIES 9
Super User
Super User

Re: Append to Array Variable action is not working

Parsing first also fails:

 

image.png

 

Output is the same, still no go.  wtH?

 

image.png

Dual Super User
Dual Super User

Re: Append to Array Variable action is not working

Hi @martinav 

 

ECN is the part number property?

 

Your parse json will retunr an array of objects containing doc id and part number

 

In order for you to add all this data to another array

you would have to loop through each array in the parse json output

 

Apply to each - Output from parse json

and within apply to each do append to array with value "item()?['PartNumber']

 

Regards,

Reza Dorrani

 

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly

Super User
Super User

Re: Append to Array Variable action is not working

@RezaDorrani ,

 

Thanks for your reply.

 

DocumentID and PartNumber are properties of an ECN.  

 

I'm not exactly sure what you are referring too, but yes, there is an apply to each involved.  That part is not a problem.  The single task of appending the current value to the existing array is what is not working.  

 

I cannot find anything in the flow documentation regarding the Append to Array Variable action and syntax.  I did some more messing around and found that the input is wanting the values WITHOUT square brackets.  The Problem is, none of these actions make an output without them.  Seems pretty rediculous.  It seems there are different people developing actions that dont interface well together.  So the question is... how do you get parse json or a Select action without square brackets?

 

Here is my example of the only way I could get Append to Array to work:

 

image.png

TestOutput shows the desired result.

 

[
  {
    "DocumentID": 10,
    "PartNumber": "342134"
  },
  {
    "DocumentID": 20,
    "PartNumber": "475478"
  },
  {
    "DocumentID": 30,
    "PartNumber": "857412"
  }
]

 

Dual Super User
Dual Super User

Re: Append to Array Variable action is not working

Hi @martinav 

 

The select action itself gives you an array of objects

 

If you run apply to each directly on the select output

and then use append to array within the loop 

just add "item()" as expression to append to array in the loop

This should work

 

Regards,

Reza Dorrani

 

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly

Super User
Super User

Re: Append to Array Variable action is not working

@RezaDorrani ,

 

Well, i do understand what you are saying, but I'm not smart enough to get it all right.  I put Item(body('Select')) in a Compose so I could see what it is doing... or not doing, in my case.

 

image.png

 

Result:

 

image.png

Dual Super User
Dual Super User

Re: Append to Array Variable action is not working

@martinav 

 

You would have to do a for each on the select action output as well

 

After your select action

add a loop using output from select action

and within that loop use append to array

expression for append to array would just be "item()"

 

Regards,

Reza Dorrani

 

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly

 

 

View solution in original post

Super User
Super User

Re: Append to Array Variable action is not working

@RezaDorrani ,

 

I was just about to give this up...  It took me forever to get what you were trying to tell me.  I would love to know how you knew how to do this.  This is ENTIRELY non-intuitive.  Even with you explaining it, and having used ALL of these actions and commands before, it took a couple of hours to get it all together.  I have no idea how this was ever figured out.  Its almost as difficult as the first dude figured out calculus.

 

Here is what finally worked, and when I review, its exactly what you were describing.

 

image.png

 

 

View solution in original post

Dual Super User
Dual Super User

Re: Append to Array Variable action is not working

@martinav 

 

The trick is in the expressions. I have done a lot of work around expressions which has helped me get familiar with it. I almost always avoid parse json and use expressions to navigate objects which helps you to gain more insights into the way expressions work

 

Select always returns an array of objects 

In order to evaluate each object within the array we need a for loop

 

Since you needed to append each object from the array into an array variable

We used the item() property which gives the current running item in the for loop

item() property is an imp expression to know of

 

Im glad that your code worked 🙂

 

Regards,

Reza Dorrani

 

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly

 

 

 

Highlighted
MarineFlow
Level: Powered On

Re: Append to Array Variable action is not working

This has saved me, THANKS!

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