Codemwnci Codemwnci - 1 year ago 144
Scala Question

Elastic4s / PlayFramework - could not find implicit value for parameter executable

I am trying to use ElasticSearch with Play 2.3.7 Scala. I have installed elastic search, added an index, and have it up and running (tested using curl). However, I am struggling to get elastic4s to work inside of a play controller.

I have created the client using a simple remote url

val client = ElasticClient.remote("localhost", 9300)

I then try to execute on the client.

client.execute {
ElasticDsl.index.into("test/test").id(id).fields (
"title" -> title,
"uid" -> uid

This is executed inside of an Action, but I get the following error.

could not find implicit value for parameter executable: com.sksamuel.elastic4s.Executable[com.sksamuel.elastic4s.IndexDefinition,R,Q]

Answer Source

This appears to be caused because I was not doing a full import of ElasticDsl as follows

import com.sksamuel.elastic4s.ElasticDsl._ 

but instead doing

import com.sksamuel.elastic4s.ElasticDsl

When importing the full object, it clearly invokes the companion objects, including the implicits needed.

The reason for not doing a full import, was because the DSL for elastic was clashing with the DSL for Anorm, so by extracting the Elastic code to a separate function, and using the import inside of the function definition, the ambiguity was removed and the code was able to compile.

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