Airflow:Date not rendering in SQL file - airflow

Question

Issue: Date not rendering in SQL file
I am not able to get the date yesterday_ds rendered in the SQL file
In bi_utils/airflow.py module I have given as YESTERDAY_DS = '{{yesterday_ds}}'
In the Dag
from bi_utils.airflow import YESTERDAY_DS
snflk_to_s3 = SnowflakeMultiSqlStatmentOperator(
task_id='snflk_to_s3',
snowflake_conn_id=SNOWFLAKE_CONN_ID,
sql=load_sql,
params={
'proc_run_task_id': [proc_start.task_id],
'yesterday_ds': YESTERDAY_DS,
},
autocommit=True,
)
In the SQL file
COPY INTO #public.stage/path/{{params.yesterday_ds}}/

Answer 1

Looks like you are using a custom operator. In that case, you will have to add the argument as a template_fields to resolve the jinja template.
In this case, inside your custom operator, the Code below is just to understand the structure.
class SnowflakeMultiSqlStatmentOperator(BaseOperator):
"""
Executes sql code in a Snowflake database
"""
template_fields = ('sql','params')
template_ext = ('.sql',)
ui_color = '#ededed'
#apply_defaults
def __init__(
self, sql, snowflake_conn_id='snowflake_default', parameters=None,
autocommit=True, warehouse=None, database=None, role=None,
schema=None,params=None, *args, **kwargs):
super(SnowflakeOperator, self).__init__(*args, **kwargs)
self.snowflake_conn_id = snowflake_conn_id
self.sql = sql
self.autocommit = autocommit
self.parameters = parameters
self.warehouse = warehouse
self.database = database
self.role = role
self.schema = schema
self.params=params
def execute(self, context):
self.log.info('Executing: %s', self.sql)
hook = self.get_hook()
hook.run(
self.sql,
autocommit=self.autocommit,
parameters=self.parameters)