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223.
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Objects may be inherited in some custom or specific modules. It is better to inherit an object to add/modify some fields.
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(no translation yet)
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Located in
../../source/developer/02_architecture.rst:494
../../source/developer/03_modules_2.rst:150
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224.
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It is done with::
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(no translation yet)
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Located in
../../source/developer/02_architecture.rst:496
../../source/developer/03_modules_2.rst:153
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225.
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Extension of an object
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(no translation yet)
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Located in
../../source/developer/02_architecture.rst:501
../../source/developer/03_modules_2.rst:158
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226.
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There are two possible ways to do this kind of inheritance. Both ways result in a new class of data, which holds parent fields and behaviour as well as additional fields and behaviour, but they differ in heavy programatical consequences.
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(no translation yet)
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Located in
../../source/developer/02_architecture.rst:503
../../source/developer/03_modules_2.rst:160
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227.
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While Example 1 creates a new subclass "custom_material" that may be "seen" or "used" by any view or tree which handles "network.material", this will not be the case for Example 2.
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Located in
../../source/developer/02_architecture.rst:505
../../source/developer/03_modules_2.rst:165
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228.
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This is due to the table (other.material) the new subclass is operating on, which will never be recognized by previous "network.material" views or trees.
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Located in
../../source/developer/02_architecture.rst:507
../../source/developer/03_modules_2.rst:169
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229.
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Example 1::
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Located in
../../source/developer/02_architecture.rst:509
../../source/developer/03_modules_2.rst:172
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230.
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Notice
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(no translation yet)
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Located in
../../source/developer/02_architecture.rst:522
../../source/developer/02_architecture.rst:544
../../source/developer/03_modules_2.rst:185
../../source/developer/03_modules_2.rst:211
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231.
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_name == _inherit
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Located in
../../source/developer/02_architecture.rst:524
../../source/developer/03_modules_2.rst:187
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232.
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In this example, the 'custom_material' will add a new field 'manuf_warranty' to the object 'network.material'. New instances of this class will be visible by views or trees operating on the superclasses table 'network.material'.
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(no translation yet)
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Located in
../../source/developer/02_architecture.rst:526
../../source/developer/03_modules_2.rst:189
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