sqlalchemy / sqlalchemy/mako

More descriptive error message when missing required arguments for a template

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feature low priority runtime
Dominant language
Python
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Forks
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Description

Migrated issue, originally created by Anonymous

When a template takes an argument like <%page args="x" /> and x is not provided, it yields the following error:

exceptions.TypeError: render_body() takes exactly 2 arguments (1 given)

I think we should add some more explicit reason of what's missing. Like "page.html takes exactly 2 arguments (1 given). Missing required argument x."

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First steps

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  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the <%page args="x" /> template case with the argument omitted and trace where the render_body() TypeError is generated. Done means the error identifies the template and explicitly names the missing required argument while preserving the existing argument-count information.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
backend
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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