What is the best way to loop through object values and trigger an event only when all of them are populated?

Within my component, I have a dynamically generated object structured like this:

currentObjectData: {
   data_type: ""
  }

As new components get created, additional key/value pairs are added to this object for future use. The data_type is a dropdown with selectable options for the user. My goal is to iterate through all instances of this object when a button is clicked, check for any empty data_type fields, and display a visual alert if found. If no empty fields exist, an event should be triggered. So far, I've attempted solutions like:

  Object.values(this.currentObjectData).forEach(objectData => {
    if (
      !this.objectData.data_type||
      this.objectData.data_type === ""
    ) {
      this.$v.$touch();
    } else {
      EventBus.$emit("allObjectsAreValidated");
    }

And also:

      Object.values((this.currentObjectData).forEach(value => {
        if (!value.includes("")) {
         EventBus.$emit("allObjectsAreValidated");
        }
      });

However, I am experiencing issues where even if one object has a non-empty data_type, the event still triggers. Can anyone offer guidance on what I might be doing wrong and how I can achieve the desired outcome? Thank you in advance! P.S. The data_type values are strings, and the workflow involves a parent component triggering this method. The idea is that if the method emits an event back, the form should be submitted.

Answer №1

Expanding on the response by @user1538301, if you are looking to identify properties that do not meet the specified criteria, you can leverage the Array::filter method in the following manner:

const missingProperties = Object.values(this.currentObjectData)
    .filter(data => objectData.report_type);

if(missingProperties.length > 1) {
    // Handle cases where properties do not fulfill the criteria
} else {
    EventBus.$emit("allObjectsAreValidated");
}

Additionally, a couple of observations regarding the code:

  1. this.objectData : It appears that your intention is not to reference a variable from the object itself but rather the parameter within the anonymous function, therefore using objectData would be more appropriate.

  2. !this.objectData.report_type || this.objectData.report_type === ""
    : An empty string holds a falsy value and is treated as false when evaluated as a boolean. (More information available at: FreeCodeCamp)

Answer №2

Utilize the Array.prototype.every method for validation

Here is a code snippet to try out:

const allObjectsMatch = Object.values(this.currentObjectData).every(
    value => /*return a boolean if the value matches*/
);
allObjectsMatch && EventBus.$emit("allObjectsAreValidated");

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