How to use rules to store field value?

Question

I am writing a rule to store Tenant field's value to Previous tenant field whenever the Tenant field is updated and saved. The following are apartment and tenant content types.

Apartment content type:

• Room
• Tenant (entity reference to Tenant content type)
• Previous Tenant (unlimited number of values is set for this field)

Tenant content type:

• Name
• Phone

And this is my rule:

{ "rules_tenant_records" : {
"LABEL" : "Tenant records",
"PLUGIN" : "reaction rule",
"OWNER" : "rules",
"REQUIRES" : [ "rules" ],
"ON" : { "node_update--apartment" : { "bundle" : "apartment" } },
"IF" : [
  { "entity_has_field" : { "entity" : [ "node-unchanged:field-tenant" ], "field" : "field_tenant" } }
],
"DO" : [
  { "data_set" : {
      "data" : [ "node:field-previous-tenant" ],
      "value" : { "value" : [ "[node:field-tenant]" ] }
    }
  }
]

} }

It does not work, any suggestion?

Answer 1

Tenant:

Appartment:

Rule:

Result:

Rules Export:

{ "rules_store_tenant_name" : {
    "LABEL" : "Store Tenant Name",
    "PLUGIN" : "reaction rule",
    "OWNER" : "rules",
    "REQUIRES" : [ "rules" ],
    "ON" : {
      "node_insert--appartment" : { "bundle" : "appartment" },
      "node_update--appartment" : { "bundle" : "appartment" }
    },
    "DO" : [
      { "entity_fetch" : {
          "USING" : { "type" : "node", "id" : [ "node:field-tenant:nid" ] },
          "PROVIDE" : { "entity_fetched" : { "entity_fetched" : "Fetched entity" } }
        }
      },
      { "list_add" : {
          "list" : [ "node:field-previous-tentant" ],
          "item" : "[entity-fetched:field-name] [entity-fetched:field-phone]",
          "unique" : "1",
          "pos" : "start"
        }
      }
    ]
  }
}

Answer 2

Do following steps:

Instead of Set data value use Add an item to a list in action. In List field select node:field-previous-tenant, in Item to add field select node-unchanged:field-tenant. At last add an action Save entity and select node in Entity field.