Class: FormReader::FormElements

Inherits:
Object
  • Object
show all
Defined in:
lib/web/formreader.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ FormElements

Returns a new instance of FormElements.



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# File 'lib/web/formreader.rb', line 170

def initialize
  @fields = {}
end

Instance Attribute Details

#action ⇒ Object

Returns the value of attribute action.



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# File 'lib/web/formreader.rb', line 168

def action
  @action
end

#fields ⇒ Object (readonly)

Returns the value of attribute fields.



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# File 'lib/web/formreader.rb', line 167

def fields
  @fields
end

Instance Method Details

#find_select(name) ⇒ Object 



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# File 'lib/web/formreader.rb', line 297

def find_select( name )
  select = if (fields[name])
             fields[name].find{ |e|
               e.kind_of? Select
             }
           end
  unless select
    select = Select.new
    push name, select
  end
  select
end

#get_fields ⇒ Object 



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# File 'lib/web/formreader.rb', line 174

def get_fields
  crushedFields = { }
  @fields.each{ |k,v|
    v = v.collect { |v1|
      if v1.kind_of? Select
        v1.to_a.sort
      else
        v1
      end
    }.flatten
    crushedFields[k] = v
  }
  Web::Testing::MultiHashTree.new(crushedFields).fields
  #crushedFields
end

#get_options ⇒ Object 



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# File 'lib/web/formreader.rb', line 190

def get_options
  all_options = { }
  @fields.each{ |k,v|
    v.each { |field|
      if (field.kind_of? Select)
        all_options[k] = field.options.collect{ |o|
          o.value
        }
      end
    }
  }
  all_options
end

#merge_fields(edited_fields) ⇒ Object 



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# File 'lib/web/formreader.rb', line 204

def merge_fields( edited_fields )
  merged = Marshal.load( Marshal.dump( @fields ) )
  
  edited_fields.each{ |k,v|
    # normalize inputs
    k = k.to_s
    v = [v] unless v.kind_of? Array

    # guard against errors
    if merged[k].nil?
      raise Web::Testing::FieldNotFoundException.new( "Element named #{k} not present on form" )
    end

    if (v.size > merged[k].size)
      raise FormMergeError.new( "Only #{merged[k].size} elements on form; " +
                                        "Can't merge with #{v.size} new values" )
    end

    v.each_with_index{ |v, i|
      pristine = @fields[k][i]
      target   = merged[k][i]

      if (pristine.kind_of? Select)
        # guard against improperly submitted values
        unless v.kind_of? Hash
          raise FormMergeError.new( "Values for select elements must be merged in by using merge('#{k}'=>select('#{v}')" )
        end

        # guard against merging multiple
        # values into single select
        if (pristine.multiple == false) & (v.keys.length > 1 )
          raise FormMergeError.new( "Trying to merge multiple [#{ v.inspect }] into single select[#{ k }]" )
        end

        # selects must be merged with a hash
        v.each{ |value, flag|
          # guard against merging nonexistent option
          unless pristine.options.find{ |e|
              e.value == value
            }
            raise FormMergeError. \
            new("Form doesn't have an option for #{value}")
          end
          
          
          # turn off everything else for single selects
          
          unless target.multiple || flag == false
            target.options.each { |o|
              o.selected = false
            }
          end
        
          # merge select fields
          target.options.find{ |e|
            e.value == value
          }.selected = flag
        }
        
      else
        merged[k][i] = v
      end
    }
  }

  # delete unchecked checkboxes
  merged.delete_if{ |k,v|
    v.delete_if{ |e|
      e == false
    }
    v.size == 0
  }



  # flatten out select elements
  merged.each{ |k,v|
    merged[k] = v.collect{ |e|
      if (e.kind_of? Select)
        e.to_a
      else
        e
      end
    }.flatten
  }
  merged
end

#push(name, value) ⇒ Object Also known as: push_text, push_select 



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# File 'lib/web/formreader.rb', line 292

def push( name, value )
  @fields[name] ||= []
  @fields[name].push value
end