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19144931
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2013-10-02T19:10:55.840
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2013-10-02T19:10:55.840
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<code>unique=True</code> is enforced by the database, not by the form validation process. If you attempt to insert a value that is already in the database, the database should return an error, which should trigger an error in your web2py application (but you won't get a nice error message displaying on the form). If you want the form validation to check for duplicates, you should use the IS_NOT_IN_DB validator: <pre><code>Field('main_watershed', 'string', requires=IS_NOT_IN_DB(db, 'watershed.main_watershed')) </code></pre> Also, rather than storing duplicates of the "project_name" field in the watershed table, you might consider making that a reference field: <pre><code>db.define_table('project', Field('project_name', 'string',unique =True), auth.signature, format='%(project_name)s') db.define_table('watershed', Field('project', 'reference project'), Field('main_watershed', 'string', requires=IS_NOT_IN_DB(db, 'watershed.main_watershed')), auth.signature) </code></pre> You should also use the URL() function in your redirect: <code>redirect(URL('default', 'add_main'))</code> Finally, to make it easier to add watersheds for the recently added project, you might consider passing the id of the project to the add_main function and have it set that as the default value for the project: <pre><code>def add_project(): form = SQLFORM(db.project).process() if form.accepted: redirect(URL('default', 'add_main', args=form.vars.id)) return dict(form = form) def add_main(): project_id = request.args(0, cast=int, default=None) db.watershed.project.default = project_id form = SQLFORM(db.watershed).process() if form.accepted: redirect(URL('default', 'add_main', args=project_id) LIST = db(db.watershed).select() return dict(form = form, LIST = LIST) </code></pre>
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