node-red-contrib-fuzzywuzzy/fuzzywuzzy.html

Fuzzy string matching for node red. Can be used for intent recognition.

<script type="text/javascript">
    RED.nodes.registerType('fuzzy-match', {
        category: 'function',
        color: '#FFAAAA',
        defaults: {
            name: { value: "" },
            inputOptions : { value: "text" },
            choices : { value: "" },
            scorer : { value : 'WRatio' }, // scorer function
            limit: { value: '0', validate:RED.validators.number() }, // Max number of top results to return, default: no limit / 0.
            cutoff: { value: '0', validate:RED.validators.number() }, // Lowest score to return, default: 0
        },
        inputs:1,
        outputs:2,
        outputLabels: [ "best match", "alternatives" ],
        icon: "font-awesome/fa-search",
        label: function() {
          return this.name || "fuzzy-match"
        },
        oneditprepare: function() {
          this.editor = RED.editor.createEditor({
            id: 'node-input-choices-editor',
            mode: 'ace/mode/text',
            value: this.choices
          });
          $("#node-input-inputOptions").on("change", function(){
            let option = $("#node-input-inputOptions").val();
            if(option == "text"){
              $("#textField").show();
            } else if (option == "message") {
              $("#textField").hide();
            }
          });
        },
        oneditsave: function() {
          this.choices = this.editor.getValue()
          this.editor.destroy()
          delete this.editor
        },
        oneditcancel: function() {
          this.editor.destroy()
          delete this.editor
        }
    })
</script>

<script type="text/html" data-template-name="fuzzy-match">
  <div class="form-row">
      <label for="node-input-name"><i class="fa fa-tag"></i> Name</label>
      <input type="text" id="node-input-name" placeholder="Name">
  </div>
  <div class="form-row">
    <label for="node-input-inputOptions">Source</label>
    <select id="node-input-inputOptions" style="width:270px !important">
        <option value="text">enter choices in config</option>
        <option value="message">set choices by msg.choices</option>
    </select>
  </div>
  <div class="form-row" id="textField">
    <label for="node-input-choices-editor">Choices</label>
    <div style="height: 250px; min-height:150px;" class="node-text-editor" id="node-input-choices-editor"></div>
  </div>
  <div class="form-row">
    <label for="node-input-scorer">Scoring</label>
    <select id="node-input-scorer" style="width:270px !important">
        <option value="WRatio">WRatio</option>
        <option value="ratio">simple_ratio</option>
        <option value="partial_ratio">partial_ratio</option>
        <option value="token_sort_ratio">token_sort_ratio</option>
        <option value="token_set_ratio">token_set_ratio</option>
        <option value="distance">distance</option>
    </select>
  </div>
  <div class="form-row">
    <label for="node-input-limit">Limit</label>
    <input type="number" id="node-input-limit" placeholder="Maximum number of results" min="0">
  </div>
  <div class="form-row">
    <label for="node-input-cutoff">Cutoff</label>
    <input type="number" id="node-input-cutoff" placeholder="Lowest score to return" min="0" max="100">
  </div>

</script>

<script type="text/html" data-help-name="fuzzy-match">
  <p>Fuzzy string matching for node red.</p>

  <h3>Options</h3>
  <dl class="message-properties">
    <dt>Choices
        <span class="property-type">string</span>
    </dt>
    <dd>
        Each line contains one choice. Keys can optionaly be supplied.
<pre>
# without key:
Hello
Hi
Goodbye
# with key:
key1:Hello
key1:Hi
key2:Goodbye
</pre>
    </dd>
    <dt>Method
        <span class="property-type">Scoring</span>
    </dt>
    <dd>
        Selects what scoring funcion to use. Read about the scoring functions here: <a href="https://github.com/nol13/fuzzball.js">https://github.com/nol13/fuzzball.js</a>
    </dd>
    <dt>Limit
        <span class="property-type">number</span>
    </dt>
    <dd>
        Maximum returned results.
    </dd>
    <dt>Cutoff
        <span class="property-type">number</span>
    </dt>
    <dd>
        Only return results with a score higher than the cutoff value.
    </dd>
  </dl>

  <h3>Inputs</h3>
    <dl class="message-properties">
      <dt>payload <span class="property-type">string</span> </dt>
      <dd>
        The string to match against the choices from the node config</code>
      </dd>
      <dt>choices <span class="property-type">string</span> </dt>
      <dd>
        Works only in "set choices with msg.choices" mode. 
        A string containing lines of choices as specified in the node config. 
        Will overwrite the choices that were set previously.</code>
      </dd>
    </dl>
    
    <h3>Outputs</h3>
    <ol class="node-ports">
      <li>best match
        <dl class="message-properties">
          <dt>match <span class="property-type">object</span></dt>
          <dd>an object containing information on the match</dd>
        </dl>
        <dl class="message-properties">
          <dt>payload <span class="property-type">string</span></dt>
          <dd>a string with the key of the match</dd>
        </dl>
      </li>
      <li>best match
        <dl class="message-properties">
          <dt>payload <span class="property-type">string</span></dt>
          <dd>an ordered array with the matching scores and keys</dd>
        </dl>
      </li>
    </ol>
</script>