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What is causing ERROR: there is no unique constraint matching given keys for referenced table?
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edited Nov 5 '15 at 13:19
Vlastimil Ovčáčík
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an...
How to expand/collapse a diff sections in Vimdiff?
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edited Jul 31 '14 at 3:37
laurent
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How can I reset a react component including all transitively reachable state?
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edited Apr 19 '18 at 6:54
ron4ex
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answered Feb 13 '1...
Measuring text width to be drawn on Canvas ( Android )
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answered Jul 15 '10 at 16:02
Marc BernsteinMarc Bernstein
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TypeScript: Creating an empty typed container array
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183
The existing answers missed an option, so here's a complete list:
// 1. Explicitly declare th...
Git: Remove committed file after push
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145
update: added safer method
preferred method:
check out the previous (unchanged) state of yo...
AngularJS $http, CORS and http authentication
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answered Jan 30 '14 at 11:54
igorzgigorzg
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How to git log from all branches for the author at once?
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196
Your command is right, since you use the --all switch which gives all commits from all branche...
How to define two fields “unique” as couple
... exactly what you want.
For example:
class MyModel(models.Model):
field1 = models.CharField(max_length=50)
field2 = models.CharField(max_length=50)
class Meta:
unique_together = ('field1', 'field2',)
And in your case:
class Volume(models.Model):
id = models.AutoField(primary_key=Tr...
How to uncompress a tar.gz in another directory
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edited Mar 7 '16 at 10:26
answered Aug 23 '13 at 12:19
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