render partial

render partial ?

<%= render partial: 'postAttachedMustache', :mustache => json_for(post) %>

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template.locals
-> []

<%= render partial: 'postPhotoMustache', locals: {:mustache => json_for(post)} %>

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template.locals
-> ['mustache']

if with partial , you normally need to use locals: { your parameter }

<%= render 'postTextMustache', :mustache => json_for(post) %>

---------------------------
template.locals
-> ['mustache']

if without partial , you don't need to use loacls , because all the parameters you use are already locals