Class: Engine2::StarToManyListAction

Inherits:
ListAction show all
Defined in:
lib/engine2/action/list.rb

Overview

  • to Many

Instance Attribute Summary

Attributes included from ActionListSupport

#default_order_field, #filters, #orders

Attributes inherited from Action

#assets, #invokable, #meta, #node, #static

Instance Method Summary collapse

Methods inherited from ListAction

#invoke, #list_order, #list_search, #page_frame

Methods included from ActionListSupport

#default_order, #field_tabs, #filter, #filter_case_insensitive, #order, #post_process, #search_live, #search_template, #searchable, #searchable_tabs, #select_toggle_menu, #sortable, #template

Methods included from ActionModelSupport

#hide_pk, #node_defined, #show_pk, #unsupported_association

Methods included from ActionAPISupport

#config, #decorate, #field_filter, #fields, #fields!, #hide_fields, #loc!, #render, #show_fields

Methods included from ActionTabSupport

#field_tabs, #select_tabs, #tab

Methods included from ActionPanelSupport

#modal_action, #panel, #panel_class, #panel_footer, #panel_header, #panel_panel_template, #panel_template, #panel_title

Methods included from ActionMenuSupport

#menu, #menu?, #post_process

Methods included from ActionOnChangeSupport

#on_change

Methods included from ActionDraggableSupport

#draggable

Methods included from ActionQuerySupport

#find_record, #get_query, #query, #select

Methods inherited from Action

action_type, #action_type, #arguments, #check_anonymous_action_class, #check_static_action, #define_invoke, #define_method, #dynamic?, #execute, #freeze_action, #http_method, http_method, inherit, inherited, #initialize, #invoke!, #join_keys, #lookup, #merge, #node_defined, #post_process, #repeat, #request, #request_action_proc_params, #split_keys

Constructor Details

This class inherits a constructor from Engine2::Action

Instance Method Details

#list_context(query, handler) ⇒ Object 



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# File 'lib/engine2/action/list.rb', line 217

def list_context query, handler
    handler.permit parent = handler.params[:parent_id]
    model = assets[:model]
    assoc = assets[:assoc]
    parent_keys = split_keys(parent)
    case assoc[:type]
    when :one_to_many
        keys = assoc[:keys]
        condition = parent_keys.all?(&:empty?) ? false : Hash[keys.map{|k| model.table_name.q(k)}.zip(parent_keys)]
        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| j_table.q(k)}
        r_keys = assoc[:right_keys].map{|k| j_table.q(k)}
        r_keys_vals = Hash[r_keys.zip(q_pk)]
        l_keys_vals = parent_keys.all?(&:empty?) ? false : Hash[l_keys.zip(parent_keys)]

        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])
            if joins = query.opts[:join] and joins.find{|j|j.table == j_table}
                query
            else
                query.qualify.left_join(j_table, r_keys_vals)
            end.filter(l_keys_vals)
        end
    else unsupported_association
    end
end

#post_run ⇒ Object 



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# File 'lib/engine2/action/list.rb', line 255

def post_run
    super
    nd = node.parent.nodes[:decode_entry]
    request do |h|
        if h.initial?
            action = nd.*
            rec = action.invoke_decode(h, [split_keys(h.params[:parent_id])]).first
            panel_title "#{static.panel[:title]} - #{action.meta[:decode_fields].map{|f|rec[f]}.join(action.meta[:separator])}"
        end
    end if nd
end

#pre_run ⇒ Object 



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# File 'lib/engine2/action/list.rb', line 211

def pre_run
    super
    menu(:panel_menu).option_at 0, :close, icon: "remove"
    panel_title "#{assets[:model].model_icon.icon} #{LOCS[assets[:assoc][:name]]}"
end