Dgraph regex query with variables when using Dgraph Go client QueryWithVars

Question

Is it possible to use variables with regex search when using the Dgraph go client?

We could built the query with SprintF but that would be insecure.

q :=query Search($searchterm: string) {
        subdomains(func: regexp(name, /^.*$searchterm/)) {
        uid:uid
        name:name
    }
}

The following query does not return any results, even tho they exist.

q := `query Search($searchterm: string) {
        subdomains(func: regexp(name, /$searchterm/)) {
            uid:uid
            name:name
        }
    }`

Or this

q := `query Search($searchterm: string) {
        subdomains(func: regexp(name, /.*$searchterm.*/)) {
            uid:uid
            name:name
        }
    }`

Then send the query to dgraph using: txn.QueryWithVars(ctx, q, variableMap)

Edit: This is a bug.

Nothing about your sample code is valid. Try starting with code that compiles. — Jonathan Hall, Apr 18 '18 at 09:12
That is part of a dgraph query made using the Go client. It compiles. — mbudge, Apr 23 '18 at 12:58
No, it does not compile. It's nothing like valid Go. [See here](https://play.golang.org/p/zIYxcejFufP). — Jonathan Hall, Apr 23 '18 at 13:17
Dgraph developers have fixed the issue. https://github.com/dgraph-io/dgraph/pull/2353 — mbudge, Apr 25 '18 at 09:40

score 0 · Answer 1 · answered Apr 18 '18 at 09:13

0

Not the way you're doing it. But you can build a dynamic regex pattern by joining strings the normal way:

re, err := regexp.Compile("ˆ.*" + regexp.QuoteMeta(searchTerm))

answered Apr 18 '18 at 09:13

Jonathan Hall

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Dgraph regex query with variables when using Dgraph Go client QueryWithVars

1 Answers1