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I have two content types (Inventory and Sales). In Sales, I referenced Inventory using the Entity reference module.

In Inventory, I have a stock_available (integer) field. In Sales, I also have the same field, so that I can automatically populate its value from Inventory using the Entity reference autofill module.

When I add a new Sales node, I want to adjust the value of stock_available in the referenced Inventory, so that gradually it becomes zero in the referenced Inventory node.

I know how to set value/calculated value from other filed within same content type, by using the Rules module.

I have no idea how I can do same things to targeted entity reference node. I think it's possible by just rule configuration. Please let me know if something needs to change to get same output that I expected.

closed as too broad by kiamlaluno Aug 31 '17 at 5:56

Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

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Step 1: Create a Rules Component

Create a Rules Component (of type "action set") like so:

  • Parameters are "node" and "stock decrease".
  • Rules Action = "set value/calculated value from other filed within same content type" (*).

Here is a prototype of such Rules Component:

{ "rules_decrease_stock" : {
    "LABEL" : "Decrease Stock",
    "PLUGIN" : "action set",
    "OWNER" : "rules",
    "REQUIRES" : [ "rules" ],
    "USES VARIABLES" : {
      "node_to_update" : { "label" : "Node to be updated", "type" : "node" },
      "stock_decrease" : { "label" : "Stock decrease", "type" : "integer" }
    },
    "ACTION SET" : [
      { "drupal_message" : { "message" : "Something just got sold, so please decrease the stock for node with id [node-to-update:nid] with an amount of \r\n[stock-decrease:value] units. To actually do so, replace this (informational) Rules Action with setting the appropriate value for the appropriate field ..." } }
    ]
  }
}

The actual action only displays a Drupal message (to show the values of the variables passed to it). Replace that action with the actual update of your inventory node (*).

Step 2: Create a Rule

Create a rule with Rules Event something like "after updating a node of content type "Sales". Maybe also some Rules Condition like "stock_available" is updated (checked if the unsaved value differs from the saved value). And add these Rules Actions:

  • Update the stock_available in your Sales content type (*).
  • Perform the Rules Component (from step 1), whereas you pass these 2 parameters:

    • the node, which you can pass via the value (token) of the entity reference.
    • the stock decrease amount (which is identical).

(*): you indicated in your question you know how to do that ...

  • Sir, I am confused, if it's possible please explain it little more (screenshot, if possible). If I create rules components then what "Component plugin" should I choose? and in DATA TYPE what I choose? In action within Components, I didn't find filed "stock_available" in Data selector. how to pass parameters? Actually I need to update/change value to filed in Inventory content type, when I add sales content (Stock Available - Sales Quantity). I hope you understand me now. – Md. Jakaria Jul 22 '16 at 10:33
  • Sorry for late response. Yeah, I solve this problem but without using component option. I was found a tutorial on this, just with little change, I was able to get expected output. Should I write those step here? – Md. Jakaria Jul 23 '16 at 16:08

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