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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"[idea] Make second parameter of /list an Observable, not just the inner values","articleBody":"I have a list of employees. Every employee has a name and and active property, e.g.\n\n```\n{\n   name: \"Dirk Postma\",\n   active: true\n}\n```\n\nIn my view I'd like to be able to filter by active flag, for example:\n\n```\nthis.filteredItems = af.database.list('employees', {\n    query: {\n        orderByChild: 'active',\n        equalTo: this.querySubject\n    }\n});\n\ntoggleActiveFilter() {\n   this.showActive = !this.showActive;\n   this.querySubject.next(this.showActive);\n}\n```\n\nThis works, great stuff!\n\nNow one step further: I'd like to be able to show either active employees or ALL employees (both active and inactive). I would like to have something like this:\n\n```\nthis.filteredItems = af.database.list('employees',  this.querySubject });\n\ntoggleActiveFilter() {\n    this.showActive = !this.showActive;\n\n    if (this.showActive) {\n        // Show active employees only\n        this.querySubject.next({\n            query: {\n                orderByChild: 'active',\n                equalTo: true\n            }\n        });\n    } else {\n        // show all employees\n        this.querySubject.next(null);\n    }\n}\n```\n\nBasically: make the second parameter itself an Observable in stead of just the inner values of e.g. equalTo.\n\nIs this an idea?\n","author":{"url":"https://github.com/dirkpostma","@type":"Person","name":"dirkpostma"},"datePublished":"2016-07-26T13:57:13.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":4},"url":"https://github.com/389/angularfire/issues/389"}