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PORelating Custom module field - Products - OpenErp
 

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    <p>I need to relate a field from a custom module to a button to be placed in the <code>Purchase Order</code> form of OpenErp.</p> <p>When a product picking is confirmed this button will "discharge" the quantity of this product filled in the "quantity" field of my custom module.</p> <p>For example:</p> <pre><code>class certificados_line(osv.osv): _name = 'certificados.line' _description = "Items del Certificado" def multi_a_b(self, cr, uid, ids, name, arg, context=None): res = {} for record in self.browse(cr, uid, ids,context): res[record.id] = record.Cantidad * record.Precio_Unitario_Declarado return res _columns = { 'codigo_n' : fields.related( 'product_id', 'codigo_n', type='char', size=64, string='Codigo Arancelario', store=True, readonly=True, ), 'product_id' : fields.many2one( 'product.product', 'Material', ), 'Descripcion_Arancelaria' : fields.many2one( 'product.category', 'Descripcion Arancelaria', change_default=True, domain="[('type','=','normal')]", ), 'tec_esp': fields.related( 'product_id', 'tec_esp', type='char', size=64, string='Especificaciones tecnicas', store=True, readonly=True, ), 'Cantidad' : fields.float( 'Cantidad', ), 'Unidad_de_Medida': fields.many2one( 'product.uom', 'Unidad de Medida', ), 'Precio_Unitario_Declarado' : fields.float( 'Precio Unitario Declarado', ), 'Moneda' : fields.many2one( 'res.currency', 'Moneda', ), 'Valor_En_Divisas' : fields.function( multi_a_b, type='integer', string='Valor En Divisas', ), 'requisicion_id' : fields.many2one( 'certificados.certificados', 'Certificados de No Produccion', ondelete='cascade', ), 'Cantidad_Consumida' : fields.related( 'product_id', 'outgoing_qty', type='float', string='Cantidad Consumida', store=True, readonly=True, ), 'Cantidad_Disponible' : fields.related( 'product_id', 'qty_available', type='float', string='Cantidad Disponible', store=True, readonly=True, ), } certificados_line() </code></pre> <p>Here, <code>Cantidad</code> should be the field to be automatically related to the purchase order, I mean, in the "Request for Quotation" and "Purchase Order" in OpenErp, when the picking is confirmed the <code>Product</code> stock in the warehouse gets automatically updated, "<code>product_qty</code>".</p> <p>I need to do the same but not with the stock or warehouse in OpenErp but just to this <code>Cantidad</code> field in my custom module, because some items could be bought and are managed from the warehouse and others from this module.</p> <p>I've seen the buttons in the <code>Purchase Order</code> form, I could create a new one for this task, but my problem is, how to relate this field to the <code>Purchase Order</code>in my custom module, while keeping the conventional relationship with stock?</p> <p>For further understanding, it will not be an automatic update, just an independent update, depending on when this button is clicked or not.</p> <p>I hope I've explained myself.</p> <p>Thanks in advance.</p>
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