These two methods are helpers to be added in eloquent when you want to only extract raw query conditions

eloquentRawConditions.php

<?php

namespace App;

use Illuminate\Database\Eloquent\Model as EloquentModel;

class Model extends EloquentModel
{


   /**
    * Get Underlying query conditions
    * @param  $query  eloquent query builder
    * @param  array  $withoutTheseColumns  	
    * @param  array  $withOnlyTheseColumns 
    * @return string
    */
    public function scopeGetSqlConditions($query, $withoutTheseColumns = [], $withOnlyTheseColumns = [])
    {
    	$conditions = collect($query->getQuery()->wheres);

    	// Remove Columns that are not desired
    	$conditions->reject(function ($condition) use($withoutTheseColumns) {
		    return isset($condition['column']) ? in_array($condition['column'], $withoutTheseColumns) : false;
		});

    	// Consider only these columns
    	$conditions->reject(function ($condition) use($withOnlyTheseColumns) {
		    return isset($condition['column']) ? !in_array($condition['column'], $withOnlyTheseColumns) : true;
		});

		// Build query with conditions
    	return $conditions->transform(function($item, $key){

    		// If this is the first condition, then don't prefix with the 
    		// boolean, just skipp it
    		if ($key == 0) {
    			$item['boolean'] = '';
    		}
    		// If this is a raw sql query, then don't concatenate, use exactly
    		// what the user has provide, othewise build the conditional 
    		// query
    		if (isset($item['sql'])) {
    			return "{$item['boolean']} {$item['sql']}";
    		}
    		// For us to reach here, the user didn't provide raw Sql.
    		return "{$item['boolean']} {$item['column']} {$item['operator']} '{$item['value']}'"; 
    	})->implode(" ");
    }

    /**
     * Get Condition values for specific columns
     * @param   QueryBuild 	$query                
     * @param   array 		$columnsToGetValueFor 
     * @return  array | collection
     */
    public function scopeConditionValues($query, array $columnsToGetValueFor = [])
    {
    	return collect($query->getQuery()->wheres)
    		   ->whereIn('column', $columnsToGetValueFor)
    		   ->transform(function($item){
    		   		return [$item['column'] => $item['value']];
    		   });
    }
 }