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Build a ERC721 Metadata search on top of Pixura's elastic search API
pixura
react redux sagas elasticsearch erc721 NFT
### User Story
As a developer,
I would like to have a react component for easily adding NFT search to my web page,
because it will be useful to search NFTs without being well versed in elastic search.
### Skills required
* react
* basic understanding of elastic search, (need to understand how to hit the search api and manipulate the example provided)
* javascript
* redux/sagas
### Description
The component will make a search query on the metadata fields given the search values. The metadata fields to search over will be supplied as a property.
The react component will need to make effect-ful calls using the redux-saga flow.
### Expected component:
```html
metadataFields=
resultHandler=
>
```
```html
```
### Expected behavior:
With the given properties: `elasticSearchUrl`, `metadataFields` and `resultHandler`, the component is an input text field that runs the search results via the `resultHandler`.
The `metadataFields` parameter will be used in building the the search. Please see [elastic search DSL docs](https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl.html) for more details. These fields should default to `['tags', 'description', 'name']`. There should be a max of 6 fields to search over.
The `elasticSearchUrl`is the url for elastic search api. It should default to `ropsten-api.pixura.io/elasticsearch`.
The `resultHandler` is a function to handle the results from the search. An example use case would be to emit a custom action with the results for a custom reducer to handle the result.
### Implementation
The `metadata` is a nested object in elastic search and requires a nested query. Below is an example of the query to build if `AI` is the word to search for:
```JSON
{
"query":{
"dis_max":{
"tie_breaker":0.7,
"boost":1.2,
"queries":[
{
"nested":{
"path":"metadata",
"score_mode":"avg",
"query":{
"wildcard":{
"metadata.name":"*AI*"
}
}
}
},
{
"nested":{
"path":"metadata",
"score_mode":"avg",
"query":{
"wildcard":{
"metadata.tags":"*AI*"
}
}
}
},
{
"nested":{
"path":"metadata",
"score_mode":"avg",
"query":{
"wildcard":{
"metadata.description":"*AI*"
}
}
}
}
]
}
}
}
```
For development, we've setup an elastic search cluster: https://ropsten-api.pixura.io/elasticsearch. Treat this as you would treat `http://elastic-search-node:9200`.
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