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I'm trying to figure out how to pass a filter parameter on a Services rest call. I've got a node of a specific type that I'd like to access through the Services module and rest. I'm testing with FireFox RestClient and I can get all nodes of the particular type by typing

http://localhost/drupal/gpa/node/?parameters[type]=node_type

But, I'd like to be able to get one specific instance of 'node_type' that contains a specific field value. I've taken a look at node_resource.inc, but, I can't seem to make heads or tails of what I need to use as parameters. I've tried several variations that typically return no result, or, all instances of, 'node_type'.

Is it possible to filter the returned results, or, is my approach incorrect?

EDIT: If any C# programmer stumbles across this, I was able to use the Basic HTTP Authentication module to prevent unauthorized access to the view. First, as Tyler indicated, I needed to change the permissions settings. In My case, I chose a Role (Administrator).

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The entity index resources unfortunately cannot be used to filter by field values, they can only filter by entity property values (e.g. node nid, title, type, etc). I think you have two options:

  1. create a custom service resource that uses parameters and a database query (or entity field query) to filter and return what you want
  2. use views_json (a sub module of views_datasource) to create a View with a contextual filter for your field
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  • Tyler, thanks for the direction. I used #2 above and it worked fine. However, it does seem a bit insecure. Do you know if there is a way to secure the resulting view path so that only an admin can execute it? In actuality, I'm consuming the Rest call from a C# program, so, I'm a bit concerned that anyone can run the query given the path to the view.
    – rrirower
    Commented Jan 10, 2019 at 21:45
  • You're welcome. You can secure the View path just like you do for a regular View. On the View's configuration form, go to Page Settings -> Access, then decide what type of access control you'd like to apply to the path (e.g. Permission, Role, etc).
    – tyler.frankenstein
    Commented Jan 10, 2019 at 21:49

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