Class: Engine2::StarToManyListAction

Inherits:

ListAction

• Object
• Action
• ListAction
• Engine2::StarToManyListAction

Defined in:

lib/engine2/action/list.rb

Overview

• to Many

Direct Known Subclasses

StarToManyFieldAction, StarToManyLinkListAction

Instance Attribute Summary

Attributes included from ActionListSupport

#filters, #orders

Attributes inherited from Action

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

Instance Method Summary

• #list_context(query, handler) ⇒ Object
• #post_run ⇒ Object
• #pre_run ⇒ Object

Methods inherited from ListAction

#invoke, #list_search

Methods included from ActionListSupport

#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

#get_type_info, #hide_pk, #node_defined, #show_pk, #unsupported_association

Methods included from ActionAPISupport

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

Methods included from ActionTabSupport

#field_tabs, #lazy_tab, #select_tabs

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 ActionQuerySupport

#find_record, #get_query, #query, #select

Methods inherited from Action

action_type, #action_type, #arguments, #check_static_action, #define_invoke, #dynamic?, #execute, #freeze_action, #http_method, http_method, inherit, inherited, #initialize, #invoke!, #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

# File 'lib/engine2/action/list.rb', line 164

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

# File 'lib/engine2/action/list.rb', line 202

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

#pre_run ⇒ Object

# File 'lib/engine2/action/list.rb', line 158

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