How to programmatically update one field, on upload of a file in other field

- 52 Posts
ddim Reply #1, 7 years ago
Hi, I have following MIGX (only part of the code for easier explanation)
```
        {
          "MIGX_id":1,
          "field":"title",
          "caption":"Title",
          "inputTVtype":"text",
          "pos":1
        },
        {
          "MIGX_id":2,
          "field":"file",
          "caption":"Document",
          "inputTVtype":"file",
          "pos":2
        },
        {
          "MIGX_id":3,
          "field":"file2",
          "caption":"Timestamp",
          "inputTVtype":"file",
          "pos":2
        },
```
I would like to implement following functionality:
1. A user uploads a file to the "document" field.
2. After the file is uploaded and the value of the field is set a code is executed, which:
2.1. takes the value of the document field
2.2. generates a timestamp file (this I know how to do using TSA and openssl)
2.3. sets the value of "timestamp" field with the link to the generated file

How can I hook to the creation of the record, take the value from "document" field and set the value in "timestamp" field?
I appreciate any help.
- 52 Posts
ddim Reply #2, 7 years ago

Is this impossible or too simple to be answered ?

Is the answer in https://forums.modx.com/thread/102029/migx---elaborate-field-before-close#dis-post-550021 valid in this case?
Looks like using a snippet in this.renderChunk of the target field will do the job. Is this correct? [ed. note: ddim last edited this post 7 years ago.]