Module | Sequel::Plugins::XmlSerializer::InstanceMethods |
In: |
lib/sequel/plugins/xml_serializer.rb
|
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 211 211: def from_xml(xml, opts=OPTS) 212: from_xml_node(Nokogiri::XML(xml).children.first, opts) 213: end
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 225 225: def from_xml_node(parent, opts=OPTS) 226: unless parent 227: raise Error, "Malformed XML used" 228: end 229: if !parent.children.empty? && parent.children.all?{|node| node.is_a?(Nokogiri::XML::Text)} 230: raise Error, "XML consisting of just text nodes used" 231: end 232: 233: if assocs = opts[:associations] 234: assocs = case assocs 235: when Symbol 236: {assocs=>OPTS} 237: when Array 238: assocs_tmp = {} 239: assocs.each{|v| assocs_tmp[v] = OPTS} 240: assocs_tmp 241: when Hash 242: assocs 243: else 244: raise Error, ":associations should be Symbol, Array, or Hash if present" 245: end 246: 247: assocs_hash = {} 248: assocs.each{|k,v| assocs_hash[k.to_s] = v} 249: assocs_present = [] 250: end 251: 252: hash = {} 253: populate_associations = {} 254: name_proc = model.xml_deserialize_name_proc(opts) 255: parent.children.each do |node| 256: next if node.is_a?(Nokogiri::XML::Text) 257: k = name_proc[node.name] 258: if assocs_hash && assocs_hash[k] 259: assocs_present << [k.to_sym, node] 260: else 261: hash[k] = node.key?('nil') ? nil : node.children.first.to_s 262: end 263: end 264: 265: if assocs_present 266: assocs_present.each do |assoc, node| 267: assoc_opts = assocs[assoc] 268: 269: unless r = model.association_reflection(assoc) 270: raise Error, "Association #{assoc} is not defined for #{model}" 271: end 272: 273: populate_associations[assoc] = if r.returns_array? 274: node.children.reject{|c| c.is_a?(Nokogiri::XML::Text)}.map{|c| r.associated_class.from_xml_node(c, assoc_opts)} 275: else 276: r.associated_class.from_xml_node(node, assoc_opts) 277: end 278: end 279: end 280: 281: if fields = opts[:fields] 282: set_fields(hash, fields, opts) 283: else 284: set(hash) 285: end 286: 287: populate_associations.each do |assoc, values| 288: associations[assoc] = values 289: end 290: 291: self 292: end
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 332 332: def to_xml(opts=OPTS) 333: vals = values 334: types = opts[:types] 335: inc = opts[:include] 336: 337: cols = if only = opts[:only] 338: Array(only) 339: else 340: vals.keys - Array(opts[:except]) 341: end 342: 343: name_proc = model.xml_serialize_name_proc(opts) 344: x = model.xml_builder(opts) 345: x.public_send(name_proc[opts.fetch(:root_name, model.send(:underscore, model.name).gsub('/', '__')).to_s]) do |x1| 346: cols.each do |c| 347: attrs = {} 348: if types 349: attrs[:type] = db_schema.fetch(c, OPTS)[:type] 350: end 351: v = vals[c] 352: if v.nil? 353: attrs[:nil] = '' 354: end 355: x1.public_send(name_proc[c.to_s], v, attrs) 356: end 357: if inc.is_a?(Hash) 358: inc.each{|k, v| to_xml_include(x1, k, v)} 359: else 360: Array(inc).each{|i| to_xml_include(x1, i)} 361: end 362: yield x1 if block_given? 363: end 364: x.to_xml 365: end