Class: Engine2::StarToManyListMeta

Inherits:

ListMeta

• Object
• Meta
• ListMeta
• Engine2::StarToManyListMeta

Defined in:

lib/engine2/meta/list_meta.rb

Overview

• to Many

Direct Known Subclasses

StarToManyFieldMeta, StarToManyLinkListMeta

Instance Attribute Summary

Attributes included from MetaListSupport

#filters, #orders

Attributes inherited from Meta

#action, #assets, #invokable, #static

Instance Method Summary

• #list_context(query, handler) ⇒ Object

  def post_run super unless @request_meta_proc request{|h| decode_panel_title h} end end.

• #pre_run ⇒ Object

Methods inherited from ListMeta

#invoke, #list_search, #post_run

Methods included from MetaListSupport

#filter, #order, #post_process, #post_run, #search_live, #search_template, #searchable, #searchable_tabs, #sortable, #template

Methods included from MetaModelSupport

#action_defined, #get_type_info, #hide_pk, #show_pk, #unsupported_association

Methods included from MetaAPISupport

#config, #decorate, #field_filter, #hide_fields, #info, #info!, #render, #show_fields

Methods included from MetaTabSupport

#field_tabs, #lazy_tab, #select_tabs

Methods included from MetaPanelSupport

#glyphicon, #modal_action, #panel, #panel_class, #panel_panel_template, #panel_template, #panel_title, #post_run

Methods included from MetaMenuSupport

#menu, #post_process

Methods included from MetaOnChangeSupport

#on_change

Methods included from MetaQuerySupport

#get_query, #post_run, #query, #select

Methods inherited from Meta

#action_defined, #check_static_meta, #dynamic?, #freeze_meta, #get, http_method, #http_method, inherited, #initialize, #invoke!, #lookup, #merge, #meta_type, meta_type, #post_process, #post_run, #request, #request_meta_proc_params, #response, #split_keys

Constructor Details

This class inherits a constructor from Engine2::Meta

Instance Method Details

#list_context(query, handler) ⇒ Object

def post_run

super
unless @request_meta_proc
    request{|h| decode_panel_title h}
end

end

# File 'lib/engine2/meta/list_meta.rb', line 176

def list_context query, handler
    handler.permit parent = handler.params[:parent_id]
    model = assets[:model]
    assoc = assets[:assoc]
    case assoc[:type]
    when :one_to_many
        keys = assoc[:keys]
        condition = parent.empty? ? false : Hash[keys.map{|k| k.qualify(model.table_name)}.zip(split_keys(parent))]
        if handler.params[:negate]
            query = query.exclude(condition)
            query = query.or(Hash[keys.zip([nil])]) if keys.all?{|k|model.db_schema[k][:allow_null] == true} # type_info[:required] ?
            query
        else
            query.where(condition)
        end
    when :many_to_many
        q_pk = model.primary_keys_qualified
        j_table = assoc[:join_table]
        l_keys = assoc[:left_keys].map{|k| k.qualify(j_table)}
        r_keys = assoc[:right_keys].map{|k| k.qualify(j_table)}
        r_keys_vals = Hash[r_keys.zip(q_pk)]
        l_keys_vals = parent.empty? ? false : Hash[l_keys.zip(split_keys(parent))]

        if handler.params[:negate]
            query.exclude(model.db[j_table].select(nil).where(r_keys_vals, l_keys_vals).exists)
        else
            # query.qualify.join(j_table, [r_keys_vals, l_keys_vals])
            query.qualify.left_join(j_table, r_keys_vals).filter(l_keys_vals)
        end
    else unsupported_association
    end
end

#pre_run ⇒ Object

# File 'lib/engine2/meta/list_meta.rb', line 156

def pre_run
    super
    panel_title "#{glyphicon('list')} #{LOCS[assets[:assoc][:name]]}"
end