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Rails: How can I set default values in ActiveRecord?

... See Paul Russell's comment on this answer for more details If you're only selecting a subset of columns for a model (ie; using select in a query like Person.select(:firstname, :lastname).all) you will get a MissingAttributeError if your init method accesses a column that hasn't been included in the...
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How can I uninstall an application using PowerShell?

...ause of Get-WmiObject: $app = Get-WmiObject -Class Win32_Product -filter "select * from Win32_Product WHERE name = 'Software Name'" – Rob Paterson Sep 22 '08 at 7:44 8 ...
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How to move child element from one parent to another using jQuery [duplicate]

...he actual id's of the fields had multiple -'s and _'s in it, and I was not selecting the element because the id wasn't matching. Thank you. – Dom Apr 8 '10 at 2:40 add a comme...
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Delete all records in a table of MYSQL in phpMyAdmin

...ampserver 2.2. When I want to delete all records of a table in phpMyAdmin (select all) it deletes only one record not all records. Why it does not delete all records? ...
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How to use if-else option in JSTL

...prefix="c" uri="http://www.springframework.org/tags/form"%> and <c:select> <option value="RCV" ${records[0].getDirection() == 'RCV' ? 'selected="true"' : ''}> <spring:message code="dropdown.Incoming" text="dropdown.Incoming" /> ...
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How to move the cursor word by word in the OS X Terminal

...e sequences for you: Open Terminal preferences (cmd+,); At Settings tab, select Keyboard and double-click ⌥ ← if it's there, or add it if it's not. Set the modifier as desired, and type the shortcut key in the box: esc+B, generating the text \033b (you can't type this text manually). Repeat fo...
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Facebook App: localhost no longer works as app domain

...working on localhost, port 3000 I did the following: Create App Now Select "+ Create Test App" from the arrow dropdown (top left). Add localhost to App Domains Add http://localhost:3000/ to Site URL by selected "+ Add Platform" Up to this point I had followed all previous answer...
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app-release-unsigned.apk is not signed

...ettings. Go to Signing Tab. Add a signing config and fill in information. Select your keychain as well. Go to Build Type tab. Select release mode and set: -Debuggable to true. -Signing Config to the config. (The one you just created). Sync your gradle. Enjoy! ...
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“Remote System Explorer Operation” causing freeze for couple of seconds

... Here are the steps: Click on the Windows > Preferences menu Select General > Workspace > Build in the tree Uncheck Use default build order Select RemoteSystemsTempFiles Click Remove Project Click Apply and Close ...
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Throw an error in a MySQL trigger

... trigger_test values (1), (-1), (2); -- everything fails as one row is bad select * from trigger_test; insert into trigger_test values (1); -- succeeds as expected insert into trigger_test values (-1); -- fails as expected select * from trigger_test; ...