Django 1.8.x DocumentationDatabase transactions Multiple databases Tablespaces Database access optimization Examples of model relationship API usage Handling HTTP requests URL dispatcher Writing views View decorators File Uploads Django optional arguments; in this case, we’ve set the default value of votes to 0. Finally, note a relationship is defined, using ForeignKey. That tells Django each Choice is related to a single Question. Django appends "_id" to the foreign key field name. (Yes, you can override this, as well.) The foreign key relationship is made explicit by a FOREIGN KEY constraint. Don’t worry about the DEFERRABLE parts; that’s just0 码力 | 2454 页 | 2.85 MB | 1 年前3
Django 1.8.x Documentationoptional arguments; in this case, we’ve set the default value of votes to 0. Finally, note a relationship is defined, using ForeignKey. That tells Django each Choice is related to a single Question. Django "_id" to the foreign key field name. (Yes, you can override this, as well.) • The foreign key relationship is made explicit by a FOREIGN KEY constraint. Don’t worry about the DEFERRABLE parts; that’s just this point. Also note the “Add Another” link next to “Question.” Every object with a ForeignKey relationship to another gets this for free. When you click “Add Another,” you’ll get a popup window with the0 码力 | 1685 页 | 6.01 MB | 1 年前3
Django 3.0.x Documentationdatabases Tablespaces Database access optimization Database instrumentation Examples of model relationship API usage Handling HTTP requests URL dispatcher Writing views View decorators File Uploads Django optional arguments; in this case, we’ve set the default value of votes to 0. Finally, note a relationship is defined, using ForeignKey. That tells Django each Choice is related to a single Question. Django appends "_id" to the foreign key field name. (Yes, you can override this, as well.) The foreign key relationship is made explicit by a FOREIGN KEY constraint. Don’t worry about the DEFERRABLE parts; it’s telling0 码力 | 3085 页 | 2.95 MB | 1 年前3
Django 1.10.x DocumentationDatabase transactions Multiple databases Tablespaces Database access optimization Examples of model relationship API usage Handling HTTP requests URL dispatcher Writing views View decorators File Uploads Django optional arguments; in this case, we’ve set the default value of votes to 0. Finally, note a relationship is defined, using ForeignKey. That tells Django each Choice is related to a single Question. Django appends "_id" to the foreign key field name. (Yes, you can override this, as well.) The foreign key relationship is made explicit by a FOREIGN KEY constraint. Don’t worry about the DEFERRABLE parts; that’s just0 码力 | 2538 页 | 2.59 MB | 1 年前3
Django 1.10.x Documentationoptional arguments; in this case, we’ve set the default value of votes to 0. Finally, note a relationship is defined, using ForeignKey. That tells Django each Choice is related to a single Question. Django "_id" to the foreign key field name. (Yes, you can override this, as well.) • The foreign key relationship is made explicit by a FOREIGN KEY constraint. Don’t worry about the DEFERRABLE parts; that’s just this point. Also note the “Add Another” link next to “Question.” Every object with a ForeignKey relationship to another gets this for free. When you click “Add Another”, you’ll get a popup window with the0 码力 | 1817 页 | 6.19 MB | 1 年前3
Django 1.11.x DocumentationDatabase transactions Multiple databases Tablespaces Database access optimization Examples of model relationship API usage Handling HTTP requests URL dispatcher Writing views View decorators File Uploads Django optional arguments; in this case, we’ve set the default value of votes to 0. Finally, note a relationship is defined, using ForeignKey. That tells Django each Choice is related to a single Question. Django appends "_id" to the foreign key field name. (Yes, you can override this, as well.) The foreign key relationship is made explicit by a FOREIGN KEY constraint. Don’t worry about the DEFERRABLE parts; that’s just0 码力 | 2747 页 | 2.67 MB | 1 年前3
Django 2.1.x Documentationdatabases Tablespaces Database access optimization Database instrumentation Examples of model relationship API usage Handling HTTP requests URL dispatcher Writing views View decorators File Uploads Django optional arguments; in this case, we’ve set the default value of votes to 0. Finally, note a relationship is defined, using ForeignKey. That tells Django each Choice is related to a single Question. Django appends "_id" to the foreign key field name. (Yes, you can override this, as well.) The foreign key relationship is made explicit by a FOREIGN KEY constraint. Don’t worry about the DEFERRABLE parts; that’s just0 码力 | 2790 页 | 2.71 MB | 1 年前3
Django 2.0.x Documentationdatabases Tablespaces Database access optimization Database instrumentation Examples of model relationship API usage Handling HTTP requests URL dispatcher Writing views View decorators File Uploads Django optional arguments; in this case, we’ve set the default value of votes to 0. Finally, note a relationship is defined, using ForeignKey. That tells Django each Choice is related to a single Question. Django appends "_id" to the foreign key field name. (Yes, you can override this, as well.) The foreign key relationship is made explicit by a FOREIGN KEY constraint. Don’t worry about the DEFERRABLE parts; that’s just0 码力 | 2746 页 | 2.67 MB | 1 年前3
Django 2.2.x Documentationdatabases Tablespaces Database access optimization Database instrumentation Examples of model relationship API usage Handling HTTP requests URL dispatcher Writing views View decorators File Uploads Django optional arguments; in this case, we’ve set the default value of votes to 0. Finally, note a relationship is defined, using ForeignKey. That tells Django each Choice is related to a single Question. Django appends "_id" to the foreign key field name. (Yes, you can override this, as well.) The foreign key relationship is made explicit by a FOREIGN KEY constraint. Don’t worry about the DEFERRABLE parts; that’s just0 码力 | 2915 页 | 2.83 MB | 1 年前3
Django 1.11.x Documentationoptional arguments; in this case, we’ve set the default value of votes to 0. Finally, note a relationship is defined, using ForeignKey. That tells Django each Choice is related to a single Question. Django "_id" to the foreign key field name. (Yes, you can override this, as well.) • The foreign key relationship is made explicit by a FOREIGN KEY constraint. Don’t worry about the DEFERRABLE parts; that’s just this point. Also note the “Add Another” link next to “Question.” Every object with a ForeignKey relationship to another gets this for free. When you click “Add Another”, you’ll get a popup window with the0 码力 | 1878 页 | 6.40 MB | 1 年前3
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