Class: Engine2::StarToManyUnlinkActionBase

Inherits:
Action show all
Includes:
ActionModelSupport
Defined in:
lib/engine2/action/link.rb

Instance Attribute Summary

Attributes inherited from Action

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

Instance Method Summary collapse

Methods included from ActionModelSupport

#hide_pk, #node_defined, #show_pk, #unsupported_association

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, #post_run, #repeat, #request, #request_action_proc_params, #split_keys

Constructor Details

This class inherits a constructor from Engine2::Action

Instance Method Details



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# File 'lib/engine2/action/link.rb', line 56

def invoke_unlink_db handler, parent, ids
    model = assets[:model]
    assoc = assets[:assoc]

    case assoc[:type]
    when :one_to_many
        keys = assoc[:keys]
        if keys.all?{|k|model.db_schema[k][:allow_null] == true}
            model.db.transaction do
                ids.each do |id|
                    model.where(model.primary_keys_hash(split_keys(id))).update(Hash[keys.zip([nil])])
                end
            end
        else
            handler.halt_method_not_allowed LOCS[:"non_nullable"]
        end
    when :many_to_many
        model.db.transaction do
            p_pk = Hash[assoc[:left_keys].zip(parent)]
            ds = model.db[assoc[:join_table]]
            ids.each do |id|
                ds.where(p_pk & Hash[assoc[:right_keys].zip(split_keys(id))]).delete
            end
        end
    else unsupported_association
    end
    {}
end

#pre_run ⇒ Object 



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# File 'lib/engine2/action/link.rb', line 51

def pre_run
    super
    execute "[action.parent().invoke(), action.panel_close()]"
end