yq/pkg/yqlib/doc/operators/load.md

Load

The load/strload operator allows you to load in content from another file referenced in your yaml document.

Note that you can use string operators like + and sub to modify the value in the yaml file to a path that exists in your system.

Use strload to load text based content as a string block, and load to interpret the file as yaml.

Lets say there is a file ../../examples/thing.yml:

a: apple is included
b: cool

Simple example

Given a sample.yml file of:

myFile: ../../examples/thing.yml

then

yq eval 'load(.myFile)' sample.yml

will output

a: apple is included
b: cool.

Replace node with referenced file

Note that you can modify the filename in the load operator if needed.

Given a sample.yml file of:

something:
  file: thing.yml

then

yq eval '.something |= load("../../examples/" + .file)' sample.yml

will output

something:
  a: apple is included
  b: cool.

Replace all nodes with referenced file

Recursively match all the nodes (..) and then filter the ones that have a 'file' attribute.

Given a sample.yml file of:

something:
  file: thing.yml
over:
  here:
    - file: thing.yml

then

yq eval '(.. | select(has("file"))) |= load("../../examples/" + .file)' sample.yml

will output

something:
  a: apple is included
  b: cool.
over:
  here:
    - a: apple is included
      b: cool.

Replace node with referenced file as string

This will work for any text based file

Given a sample.yml file of:

something:
  file: thing.yml

then

yq eval '.something |= strload("../../examples/" + .file)' sample.yml

will output

something: |-
  a: apple is included
  b: cool.