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Add template information to multiple template error messages. #2115

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Oct 1, 2024
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Add template information to multiple template error messages. #2115

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Add template information to multiple template error messages.
joelhawksley Oct 1, 2024
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joelhawksley Oct 1, 2024
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4 changes: 4 additions & 0 deletions docs/CHANGELOG.md
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Expand Up @@ -10,6 +10,10 @@ nav_order: 5

## main

* Add template information to multiple template error messages.

*Joel Hawksley*

* Add `ostruct` to gemspec file to suppress stdlib removal warning.

*Jonathan Underwood*
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2 changes: 1 addition & 1 deletion lib/view_component/compiler.rb
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Expand Up @@ -159,7 +159,7 @@ def gather_template_errors(raise_errors)
errors << "Colliding templates #{variant_names.sort.map { |v| "'#{v}'" }.to_sentence} found in #{@component}."
end

raise TemplateError.new(errors) if errors.any? && raise_errors
raise TemplateError.new(errors, @templates) if errors.any? && raise_errors

errors
end
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12 changes: 10 additions & 2 deletions lib/view_component/errors.rb
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Expand Up @@ -17,8 +17,16 @@ def initialize(klass_name)
end

class TemplateError < StandardError
def initialize(errors)
super(errors.join("\n"))
def initialize(errors, templates = nil)
message = errors.join("\n")

if templates
message << "\n"
message << "Templates:"
message << templates.map(&:inspect).join("\n")
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do we want inspect output, or just the template name?

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All of the inspect output, as it shows what type of templates there are for the component and where they are defined:

Template file and inline render method found for variant 'phone' in VariantTemplateAndInlineVariantTemplateComponent. There can only be a template file or inline render method per variant.

Templates:

#<ViewComponent::Template:0x000000012a9980d8 @component=VariantTemplateAndInlineVariantTemplateComponent, @type=:file, @this_format=:html, @variant=:phone, @lineno=0, @path=\"/Users/joelhawksley/github/view_component/test/sandbox/app/components/variant_template_and_inline_variant_template_component.html+phone.erb\", @extension=\"erb\", @source=nil, @method_name=nil, @defined_on_self=true, @source_originally_nil=true, @call_method_name=\"call_phone\">

#<ViewComponent::Template:0x000000012a997ef8 @component=VariantTemplateAndInlineVariantTemplateComponent, @type=:inline_call, @this_format=:html, @variant=:phone, @lineno=nil, @path=nil, @extension=nil, @source=nil, @method_name=:call_phone, @defined_on_self=true, @source_originally_nil=true, @call_method_name=:call_phone>

end

super(message)
end
end

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5 changes: 5 additions & 0 deletions test/sandbox/test/rendering_test.rb
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Expand Up @@ -512,6 +512,11 @@ def test_raise_error_when_variant_template_file_and_inline_variant_call_exist
end
end

assert_includes(
error.message,
"ViewComponent::Template:"
)

assert_includes(
error.message,
"Template file and inline render method found for variant 'phone' in " \
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