How to remove '---' on top of a YAML file?
YAML spec says:
YAML uses three dashes (“---”) to separate directives from document content. This also serves to signal the start of a document if no directives are present.
Example:
# Ranking of 1998 home runs
---
- Mark McGwire
- Sammy Sosa
- Ken Griffey
# Team ranking
---
- Chicago Cubs
- St Louis Cardinals
So if you have multiple documents per YAML file, you have to separate them by three dashes. If you only have one document, you can remove/omit it (I never had a problem with YAML in ruby if three-dashes was missing). The reason why it's added when you yamlify your object is that, I guess, the dumper is written "by the spec" and doesn't care to implement such "shortcuts" (omit three-dashes when it's only one document).
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Comments
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Ava about 2 years
I am modifying a YAML file in Ruby. After I write back the modified YAML, I see a
---
added on top of the file. How is this getting added and how do I get rid of it?-
Raj over 10 yearsshowing some code might help
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Ava over 10 yearsI just have one document, how do I remove it every time I modify the file.
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Sergio Tulentsev over 10 yearsYou could just
yaml.gsub("---\n", '')
. -
Ava over 10 yearsgsub is a method for strings. Getting undefined method `gsub' for #<Hash
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Sergio Tulentsev over 10 years@Ava: yes, do
hash.to_yaml.gsub(...)