Exception: ActionView::TemplateError
- Inherits:
-
ActionViewError
- Object
- StandardError
- ActionViewError
- ActionView::TemplateError
- Defined in:
- lib/action_view/template_error.rb
Overview
The TemplateError exception is raised when the compilation of the template fails. This exception then gathers a bunch of intimate details and uses it to report a very precise exception message.
Constant Summary collapse
- SOURCE_CODE_RADIUS =
:nodoc:
3
Instance Attribute Summary collapse
-
#original_exception ⇒ Object
readonly
Returns the value of attribute original_exception.
Instance Method Summary collapse
-
#backtrace ⇒ Object
don’t do anything nontrivial here.
- #clean_backtrace ⇒ Object
- #file_name ⇒ Object
-
#initialize(template, assigns, original_exception) ⇒ TemplateError
constructor
A new instance of TemplateError.
- #line_number ⇒ Object
- #message ⇒ Object
- #source_extract(indentation = 0) ⇒ Object
- #sub_template_message ⇒ Object
- #sub_template_of(template_path) ⇒ Object
- #to_s ⇒ Object
Constructor Details
#initialize(template, assigns, original_exception) ⇒ TemplateError
Returns a new instance of TemplateError.
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# File 'lib/action_view/template_error.rb', line 9 def initialize(template, assigns, original_exception) @base_path = template.base_path_for_exception @assigns, @source, @original_exception = assigns.dup, template.source, original_exception @file_path = template.filename @backtrace = compute_backtrace end |
Instance Attribute Details
#original_exception ⇒ Object (readonly)
Returns the value of attribute original_exception.
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# File 'lib/action_view/template_error.rb', line 7 def original_exception @original_exception end |
Instance Method Details
#backtrace ⇒ Object
don’t do anything nontrivial here. Any raised exception from here becomes fatal (and can’t be rescued).
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# File 'lib/action_view/template_error.rb', line 79 def backtrace @backtrace end |
#clean_backtrace ⇒ Object
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# File 'lib/action_view/template_error.rb', line 20 def clean_backtrace original_exception.clean_backtrace end |
#file_name ⇒ Object
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# File 'lib/action_view/template_error.rb', line 66 def file_name stripped = strip_base_path(@file_path) stripped.slice!(0,1) if stripped[0] == ?/ stripped end |
#line_number ⇒ Object
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# File 'lib/action_view/template_error.rb', line 57 def line_number @line_number ||= if file_name regexp = /#{Regexp.escape File.basename(file_name)}:(\d+)/ $1 if =~ regexp or clean_backtrace.find { |line| line =~ regexp } end end |
#message ⇒ Object
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# File 'lib/action_view/template_error.rb', line 16 def ActiveSupport::Deprecation.silence { original_exception. } end |
#source_extract(indentation = 0) ⇒ Object
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# File 'lib/action_view/template_error.rb', line 33 def source_extract(indentation = 0) return unless num = line_number num = num.to_i source_code = IO.readlines(@file_path) start_on_line = [ num - SOURCE_CODE_RADIUS - 1, 0 ].max end_on_line = [ num + SOURCE_CODE_RADIUS - 1, source_code.length].min indent = ' ' * indentation line_counter = start_on_line return unless source_code = source_code[start_on_line..end_on_line] source_code.sum do |line| line_counter += 1 "#{indent}#{line_counter}: #{line}" end end |
#sub_template_message ⇒ Object
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# File 'lib/action_view/template_error.rb', line 24 def if @sub_templates "Trace of template inclusion: " + @sub_templates.collect { |template| strip_base_path(template) }.join(", ") else "" end end |
#sub_template_of(template_path) ⇒ Object
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# File 'lib/action_view/template_error.rb', line 52 def sub_template_of(template_path) @sub_templates ||= [] @sub_templates << template_path end |
#to_s ⇒ Object
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# File 'lib/action_view/template_error.rb', line 72 def to_s "\n\n#{self.class} (#{}) #{source_location}:\n" + "#{source_extract}\n #{clean_backtrace.join("\n ")}\n\n" end |