gatsby-transformer-remark use gray-matter excerpt

[reccanti]

I’m trying to grab excerpts from my markdown files up to a specified separator, similar to how they’re handled by graymatter and jekyll link. Seeing as how this plugin uses graymatter under-the-hood, is there any way to access this functionality?

gatsby-transformer-remark version - 1.7.19
gatsby version - 1.9.73

[KyleAMathews]

This is the relevant code https://github.com/gatsbyjs/gatsby/blob/2439ef79b4e667efd4c548dffef0a8fcca17248c/packages/gatsby-transformer-remark/src/on-node-create.js#L22

[reccanti]

Okay! It looks like graymatter accepts an object as a second parameter after content where you can specify whether to get an excerpt and what the excerpt should be. Any idea what the best way to add this functionality would be? Would it be better as a custom plugin, or would it be useful to add this functionality to the main remark plugin?

Sorry if I'm asking a lot. I'm new to working with Gatsby

[reccanti]

Just noticed this. gatsby-transformer-remark relies version 2.1 of graymatter, but the excerpt options were added in version 3.0. I tried updating it in the plugin and tests seem to pass after updating the snapshot

[KyleAMathews]

Oh sweet! Would you like to put together a PR that upgrades gray-matter and documents how to add excerpt support?

You'd also need to modify the existing excerpt functionality to check if there's an excerpt already set and use that instead of generating a new one https://github.com/gatsbyjs/gatsby/blob/6ff3bc38b97ed4185bd97b7f90e10d580abcbb2d/packages/gatsby-transformer-remark/src/extend-node-type.js#L262

[reccanti]

Sure, I can take a look at that!

[fxfactorial]

Bump, any way to change the excerpt pruneLength from the 140 default?

[reccanti]

We should close this since it was taken care of in this PR https://github.com/gatsbyjs/gatsby/pull/2883.

@fxfactorial You can updated the pruneLength in your graphql https://using-remark.gatsbyjs.org/excerpts/

[fxfactorial]

appreciate it!

On Apr 6, 2018, at 10:52 AM, Ben Wilcox [e-mail] wrote:

We should close this since it was taken care of in this PR #2883 https://github.com/gatsbyjs/gatsby/pull/2883.

@fxfactorial https://github.com/fxfactorial You can updated the pruneLength in your graphql https://using-remark.gatsbyjs.org/excerpts/ https://using-remark.gatsbyjs.org/excerpts/
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[pieh]

Closing this issue, as this was already resolved as mentioned by @reccanti