toObjectPairs — GTM Variable Template for Object

VARIABLES › OBJECT

toObjectPairs EXTENDED Object

Direct (.tpl) Apply (.tpl) Add to GTM

Converts a GTM table of key-value pairs into an object.

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When to Use This

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Examples

Table to object map

INPUT

Map-like structure to create: [{key: 'name', val: 'John'}, {key: 'age', val: 30}, {key: 'city', val: 'Paris'}]

OUTPUT

{name: 'John', age: 30, city: 'Paris'}

Duplicate keys last wins

INPUT

Map-like structure to create: [{key: 'color', val: 'red'}, {key: 'size', val: 'large'}, {key: 'color', val: 'blue'}]

OUTPUT

{color: 'blue', size: 'large'}

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GTM Configuration

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Read-only Preview

toObjectPairs

Map-like structure to create

💾 The array of objects representing the simple table.

Supported formats:
  ✓ Array of Objects

*** Table to object map***

*** Duplicate keys last wins***

Property KeyProperty Value

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⊖

Add Row

Input Setup

Input Function (optional)

⚙️ Optional pre-processing function applied to the table before internal logic (e.g., filter rows, normalize data). Internal transformations will still apply afterward.

Result Handling

Output Function (optional)

⚙️ Optional function to apply to the result before returning it (e.g., obj => JSON.stringify(obj), obj => Object.keys(obj).length for count). Useful for chaining transformations on the output.

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Related Variables

Same category: Object

→ applyFromObject → assignDefaults → assignDefaultsDeep → assignObjects → assignObjectsFromPairs → entries → getKeys → getValue → getValueByPath → has → hasKeyEqualTo → hasNested → mergeConcat → mergeConcatDeep → omit → pick → pickNested → set → values → zipObject → ⚡ OBJECT › From Arrays → ⚡ OBJECT › Smart → ⚡ OBJECT › Transformer (Advanced)

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Under the Hood

📜 View Implementation Code

/**
 * Converts a simple table object into a Map based on the specified key and value fields.
 *
 * @param {Array<Object>} data.tbl - The array of objects representing the simple table, where each object has a 'key' and 'value' field.
 * @param {Function|string} [data.out] - Optional output handler: function to transform result or string with format.
 *
 * Direct-mode specific parameters:
 * @param {Function} [data.pre] - Optional pre-processor function to transform tbl before conversion.
 *
 * @returns {Object|null} Returns an object (Map) where the specified key and value fields become the keys and values in the Map. If no valid key-value pairs are found, it returns null.
 *
 * @framework ggLowCodeGTMKit
 */
const makeTableMap = require('makeTableMap');

const toObjectPairs = function(simpleTable) {
    return makeTableMap(simpleTable, "key", "val");
};
const safeFunction = fn => typeof fn === 'function' ? fn : x => x;
const out = safeFunction(data.out);
// ===============================================================================
// toObjectPairs - Direct mode
// ===============================================================================
const applyCast = (castFn, value) => safeFunction(castFn)(value);
const processedTable = applyCast(data.pre, data.tbl);
return out(toObjectPairs(processedTable));
// ===============================================================================
// toObjectPairs() – Apply Mode
// ===============================================================================
/*
return function(value) {
   return out(toObjectPairs(value));
};
*/

🧪 View Test Scenarios (5 tests)

✅ '[example] Table to object map'
✅ Test with single key-value pair
✅ '[example] Duplicate keys last wins'
✅ Test with empty array returns null
✅ Test with mixed value types