get_models seems broken in 1.8

[sdebruyn]

Steps to reproduce

1. Install dbt-core 1.8.0b2 with a compatible adapter
2. Create a new analysis and paste {{ log('repro: ' ~ codegen.get_models(directory='somedir')) }}
3. Run dbt run -s your_analysis

Expected results

A log with your models

Actual results

Compilation error 'dict object' has no attribute 'nodes'

System information

packages:
  - package: dbt-labs/codegen
    version: 0.12.1

Which database are you using dbt with?

• [x] postgres
• [ ] redshift
• [ ] bigquery
• [ ] snowflake
• [ ] other (specify: ____________)

The output of dbt --version:

Core:
  - installed: 1.8.0-b2
  - latest:    1.7.11   - Ahead of latest version!

Plugins:
  - postgres:    1.8.0b1 - Ahead of latest version!
  - timescaledb: 1.8.0b2 - Up to date!

The operating system you're using: macOS

The output of python --version: Python 3.11.8

[gwenwindflower]

thanks @sdebruyn -- we're getting ready to cut a new release next week so we'll dig into this and make sure it gets fixed before we do that! thanks for the heads up!

[gwenwindflower]

hey @sdebruyn were you wrapping that in an if execute tag? wondering if it's just this -- there aren't nodes in the graph in the parsing stage that would typically apply to an analysis file.

[mrhorvath]

Could the example in the readme (https://github.com/dbt-labs/dbt-codegen?tab=readme-ov-file#generate_model_yaml-source) that uses codegen.get_models be updated to include 'if execute'? As the documentation is written now, it results in the error described in this issue.