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Contents
module Netzke
module DbFields
def default_db_fields
config[:data_class_name].nil? && raise(ArgumentError, "No data_class_name specified for widget #{config[:name]}")
data_class = config[:data_class_name].constantize
exposed_columns = normalize_columns(data_class.exposed_columns) # columns exposed from the data class
columns_from_config = (config[:fields] || config[:columns]) && normalize_columns(config[:fields] || config[:columns]) # columns specified in widget's config
if columns_from_config
# reverse-merge each column hash from config with each column hash from exposed_columns (columns from config have higher priority)
for c in columns_from_config
corresponding_exposed_column = exposed_columns.find{ |k| k[:name] == c[:name] }
c.reverse_merge!(corresponding_exposed_column) if corresponding_exposed_column
end
columns_for_create = columns_from_config
else
# we didn't have columns configured in widget's config, so, use the columns from the data class
columns_for_create = exposed_columns
end
res = []
for c in columns_for_create
# finally reverse-merge them with the defaults from the data_class
res << (self.class.widget_type == :grid ? data_class.default_column_config(c) : data_class.default_field_config(c))
end
res
end
protected
# [:col1, {:name => :col2}, :col3]
# => [{:name => :col1}, {:name => :col2}, {:name => :col3}]
def normalize_columns(items)
items.map{|c| c.is_a?(Symbol) ? {:name => c} : c}
end
end
end
Version data entries
10 entries across 10 versions & 1 rubygems