Module: Sequel::Plugins::XmlSerializer::InstanceMethods

### Home Classes Methods

### In Files

- lib/sequel/plugins/xml_serializer.rb

### Methods

- #from_xml
- #from_xml_node
- #to_xml

### Files

- CHANGELOG
- MIT-LICENSE
- README.rdoc
- active_record.rdoc
- advanced_associations.rdoc
- association_basics.rdoc
- bin_sequel.rdoc
- cheat_sheet.rdoc
- code_order.rdoc
- core_extensions.rdoc
- dataset_basics.rdoc
- dataset_filtering.rdoc
- extensions.rdoc
- mass_assignment.rdoc
- migration.rdoc
- model_hooks.rdoc
- model_plugins.rdoc
- object_model.rdoc
- opening_databases.rdoc
- postgresql.rdoc
- prepared_statements.rdoc
- querying.rdoc
- reflection.rdoc
- 1.0.txt
- 1.1.txt
- 1.3.txt
- 1.4.0.txt
- 1.5.0.txt
- 2.0.0.txt
- 2.1.0.txt
- 2.10.0.txt
- 2.11.0.txt
- 2.12.0.txt
- 2.2.0.txt
- 2.3.0.txt
- 2.4.0.txt
- 2.5.0.txt
- 2.6.0.txt
- 2.7.0.txt
- 2.8.0.txt
- 2.9.0.txt
- 3.0.0.txt
- 3.1.0.txt
- 3.10.0.txt
- 3.11.0.txt
- 3.12.0.txt
- 3.13.0.txt
- 3.14.0.txt
- 3.15.0.txt
- 3.16.0.txt
- 3.17.0.txt
- 3.18.0.txt
- 3.19.0.txt
- 3.2.0.txt
- 3.20.0.txt
- 3.21.0.txt
- 3.22.0.txt
- 3.23.0.txt
- 3.24.0.txt
- 3.25.0.txt
- 3.26.0.txt
- 3.27.0.txt
- 3.28.0.txt
- 3.29.0.txt
- 3.3.0.txt
- 3.30.0.txt
- 3.31.0.txt
- 3.32.0.txt
- 3.33.0.txt
- 3.34.0.txt
- 3.35.0.txt
- 3.36.0.txt
- 3.37.0.txt
- 3.38.0.txt
- 3.39.0.txt
- 3.4.0.txt
- 3.40.0.txt
- 3.41.0.txt
- 3.42.0.txt
- 3.43.0.txt
- 3.44.0.txt
- 3.45.0.txt
- 3.46.0.txt
- 3.47.0.txt
- 3.48.0.txt
- 3.5.0.txt
- 3.6.0.txt
- 3.7.0.txt
- 3.8.0.txt
- 3.9.0.txt
- 4.0.0.txt
- 4.1.0.txt
- 4.2.0.txt
- 4.3.0.txt
- 4.4.0.txt
- 4.5.0.txt
- schema_modification.rdoc
- security.rdoc
- sharding.rdoc
- sql.rdoc
- testing.rdoc
- thread_safety.rdoc
- transactions.rdoc
- validations.rdoc
- virtual_rows.rdoc

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# Sequel::Plugins::XmlSerializer::InstanceMethods

### Public Instance Methods

from_xml(xml, opts=OPTS) click to toggle source

Update the contents of this instance based on the given XML. Accepts the following options:

:name_proc | Proc or Hash that accepts a string and returns a string, used to convert tag names to column or association names.
:underscore | Sets the :name_proc option to one that calls `underscore` on the input string. Requires that you load the inflector extension or another library that adds String#underscore.

    # File lib/sequel/plugins/xml_serializer.rb, line 210
    def from_xml(xml, opts=OPTS)
      from_xml_node(Nokogiri::XML(xml).children.first, opts)
    end

from_xml_node(parent, opts=OPTS) click to toggle source

Update the contents of this instance based on the given XML node, which should be a Nokogiri::XML::Node instance. By default, just calls set with a hash created from the content of the node.

Options:

:associations | Indicates that the associations cache should be updated by creating a new associated object using data from the hash. Should be a Symbol for a single association, an array of symbols for multiple associations, or a hash with symbol keys and dependent association option hash values.
:fields | Changes the behavior to call set_fields using the provided fields, instead of calling set.

    # File lib/sequel/plugins/xml_serializer.rb, line 224
    def from_xml_node(parent, opts=OPTS)
      unless parent
        raise Error, "Malformed XML used"
      end
      if !parent.children.empty? && parent.children.all?{|node| node.is_a?(Nokogiri::XML::Text)}
        raise Error, "XML consisting of just text nodes used"
      end

      if assocs = opts[:associations]
        assocs = case assocs
        when Symbol
          {assocs=>{}}
        when Array
          assocs_tmp = {}
          assocs.each{|v| assocs_tmp[v] = {}}
          assocs_tmp
        when Hash
          assocs
        else
          raise Error, ":associations should be Symbol, Array, or Hash if present"
        end

        assocs_hash = {}
        assocs.each{|k,v| assocs_hash[k.to_s] = v}
        assocs_present = []
      end

      hash = {}
      populate_associations = {}
      name_proc = model.xml_deserialize_name_proc(opts)
      parent.children.each do |node|
        next if node.is_a?(Nokogiri::XML::Text)
        k = name_proc[node.name]
        if assocs_hash && assocs_hash[k]
          assocs_present << [k.to_sym, node]
        else
          hash[k] = node.key?('nil') ? nil : node.children.first.to_s
        end
      end

      if assocs_present
        assocs_present.each do |assoc, node|
          assoc_opts = assocs[assoc]

          unless r = model.association_reflection(assoc)
            raise Error, "Association #{assoc} is not defined for #{model}"
          end

          populate_associations[assoc] = if r.returns_array?
            node.children.reject{|c| c.is_a?(Nokogiri::XML::Text)}.map{|c| r.associated_class.from_xml_node(c, assoc_opts)}
          else
            r.associated_class.from_xml_node(node, assoc_opts)
          end
        end
      end

      if fields = opts[:fields]
        set_fields(hash, fields, opts)
      else
        set(hash)
      end

      populate_associations.each do |assoc, values|
        associations[assoc] = values
      end

      self
    end

to_xml(opts=OPTS) click to toggle source

Return a string in XML format. If a block is given, yields the XML builder object so you can add additional XML tags. Accepts the following options:

:builder | The builder instance used to build the XML, which should be an instance of Nokogiri::XML::Node. This is necessary if you are serializing entire object graphs, like associated objects.
:builder_opts | Options to pass to the Nokogiri::XML::Builder initializer, if the :builder option is not provided.
:camelize | Sets the :name_proc option to one that calls `camelize` on the input string. Requires that you load the inflector extension or another library that adds String#camelize.
:dasherize | Sets the :name_proc option to one that calls `dasherize` on the input string. Requires that you load the inflector extension or another library that adds String#dasherize.
:encoding | The encoding to use for the XML output, passed to the Nokogiri::XML::Builder initializer.
:except | Symbol or Array of Symbols of columns not to include in the XML output.
:include | Symbol, Array of Symbols, or a Hash with Symbol keys and Hash values specifying associations or other non-column attributes to include in the XML output. Using a nested hash, you can pass options to associations to affect the XML used for associated objects.
:name_proc | Proc or Hash that accepts a string and returns a string, used to format tag names.
:only | Symbol or Array of Symbols of columns to only include in the JSON output, ignoring all other columns.
:root_name | The base name to use for the XML tag that contains the data for this instance. This will be the name of the root node if you are only serializing a single object, but not if you are serializing an array of objects using Model.to_xml or Dataset#to_xml.
:types | Set to true to include type information for all of the columns, pulled from the db_schema.

    # File lib/sequel/plugins/xml_serializer.rb, line 331
    def to_xml(opts=OPTS)
      vals = values
      types = opts[:types]
      inc = opts[:include]

      cols = if only = opts[:only]
        Array(only)
      else
        vals.keys - Array(opts[:except])
      end

      name_proc = model.xml_serialize_name_proc(opts)
      x = model.xml_builder(opts)
      x.send(name_proc[opts.fetch(:root_name, model.send(:underscore, model.name).gsub('/', '__')).to_s]) do |x1|
        cols.each do |c|
          attrs = {}
          if types
            attrs[:type] = db_schema.fetch(c, {})[:type]
          end
          v = vals[c]
          if v.nil?
            attrs[:nil] = ''
          end
          x1.send(name_proc[c.to_s], v, attrs)
        end
        if inc.is_a?(Hash)
          inc.each{|k, v| to_xml_include(x1, k, v)}
        else
          Array(inc).each{|i| to_xml_include(x1, i)}
        end
        yield x1 if block_given?
      end
      x.to_xml
    end

[Validate]

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