add $postgres_error variable

FRiCKLE / ngx_postgres

upstream module that allows nginx to communicate directly with PostgreSQL database.

http://labs.frickle.com/nginx_ngx_postgres/

BSD 2-Clause "Simplified" License

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Open niquola opened 9 years ago

0x6e6562 commented 9 years ago

Could you give an example of how you would use this?

niquola commented 9 years ago

This patch is implementation of ideas discussed in #8. $postgres_error variable could be used by other modules to report error:

add_after_body $postgres_error;
more_set_headers "X-Error: $postgres_error";

In our case, we've created simple postgresql web console based on ngx_postgres and showing error messages is critical for UX.