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# Database Abstraction Layer

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v5:activerecord:tablekeybelongsto

# tableKeyBelongsTo

##### Syntax

    void ADODB_Active_Record::tableKeyBelongsTo(
      string $childTable,
      string $childKey,
      string $relationName,
      string $foreignKey,
      string $parentPrimaryKey = 'id',
      string $parentClass = 'ADODB_Active_Record'
      )

## Description

This function is uses if the child table differs from the convention that the child table name is the plural of the child class name or the primary key is not 'id',

## Parameters

### $childTable

The child table in the relationship

### $childKey

### $relationName

### $foreignKey

If, due to database design constraints, the key field in the child table is not named the same as that of the parent table, specify it here.

### $parentPrimaryKey

### $parentClass

If the class name for the parent table differs from that of the child, for example there has been some extension of methods, specify it here

## Usage

In this example, the class is `child`, but the table name is `children`, the primary key is ch_id and the link between the two tables is children.person_id = person.id:

    ADODB_Active_Record::TableKeyBelongsTo('children','ch_id', 'person','person_id','id');

v5/activerecord/tablekeybelongsto.txt · Last modified: 2016/01/12 17:15 by mnewnham

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