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dbt_project.yml 模型预挂钩无法呈现宏。以下实现：

# gold/dbt_project.yml

config-version: 2

...

models:
    gold:
        +pre-hooks: "{{ incremental_failsafe() }}"

以及以下宏：

-- gold/macros/utils/incremental_failsafe.sql

{% macro incremental_failsafe() %}

{# /*
Used to wrap AND clauses that should only be run on dev/CI dbt runs.

For example, to limit the number of records scanned on an incremental
table. This macro will return True unless the target profile is 'prod':

`dbt run --target prod`
*/ #}

{% if target.name == "prod" %}
    {% set incremental_failsafe = False %}
{% else %}
    {% set incremental_failsafe = True %}
{% endif %}

{{ log("Running with incremental_failsafe: " ~ incremental_failsafe, info=True) }}
{{ return(incremental_failsafe) }}

{% endmacro %}

结果如下：

(snowflake) Teghans-MacBook-Pro:gold tnightengale$ dbt compile
Running with dbt=0.17.2
Encountered an error:
Compilation Error
  Could not render {{ incremental_failsafe() }}: 'incremental_failsafe' is undefined

我知道 dbt 0.17.0 围绕 pre-hooks 存在问题，如此 slack exchange中所述。尽管我运行的是 0.17.2（不是 0.17.0），但我已经尝试按照该对话中的建议在 yml 中同时使用+pre-hook:和规范，但无济于事。pre-hook:欢迎任何见解！

编辑：解决方案

说实话，答案是如此愚蠢和明显：错误是由于拥有+pre-hooks:而不是+pre-hook:. 然而，建议的答案让我重新审视。我将其标记为正确，因为它通常为钩子提供了很多有用的上下文。干杯!

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1 回答 1

1

第一印象 - 也许您混淆了特定模型的模型预挂钩和运行预挂钩的位置？

编辑：在上面更正自己 - Asker 正在尝试执行模型配置预挂钩，而不是运行预挂钩。我现在相信你需要将你的 pre-hook 移动到与你的命名空间配置相同的优先级。见下文：

dbt_project.yml

# A run pre-hook that applies to all runs would go here:
on-run-start:
- "{{ example_pre_run_macro() }}"


models:
    # a pre-hooks to all models goes here *before* but equivalent depth to the namespace:
    +pre-hook: "{{ incremental_failsafe() }}"
 
    namespace:
        # Below configures models found in models/events/
        events:  
          +enabled: true
          +materialized: view
          # a pre-hook to a single model / model directory goes here:
          +pre-hook: "{{ example_pre_model_macro() }}"

GitLab 的 dbt repo：Gitlab dbt_project.yml

TLDR：像这样设置你的 dbt_project.yml

# gold/dbt_project.yml

config-version: 2

...

models:
    +pre-hook: "{{ incremental_failsafe() }}"
    gold:
        <models config here>
于 2020-08-26T19:39:56.933 回答