Check if date range is within another date range for fullcalendar.io display

I'm implementing the server side code to fetch events for fullcalendar.io.

There are two scenarios:

Event has a start and end date

Event has a start date, and it's set to all day

Model:

public Class CalendarEvent {

  public DateTimeOffset Start { get; set; }

  public DateTimeOffset? End { get; set; }

  public bool AllDay { get; set; }

}

When https://fullcalendar.io loads a view, it emits a date range, which is basically the days that can be seen on the calendar (i.e. 10/8/18 to 12/8/18) and I send that to my controller to fetch relevant events for that range.

I basically need to check the following:

Does any part of the event's date range fall within the visible range emitted from the calendar - if so, show it.

If it's an AllDay event, does the start date fall within the view.

Pseudo Example:

var rep = context.GetRepository<Event>();

events = rep.Get().Where(e => /* need help here */).AsQueryable();

asked Nov 23 '18 at 22:05

user1447679

1,31151746

I would change AllDay as read-only and the get method as return End == null. It kinda simplifies it and you don't need to assign it every time you create one. Assuming you have control over it

– sertsedat
Nov 23 '18 at 22:35

@sertsedat good call

– user1447679
Nov 23 '18 at 22:37

add a comment |

I'm implementing the server side code to fetch events for fullcalendar.io.

There are two scenarios:

Event has a start and end date

Event has a start date, and it's set to all day

Model:

public Class CalendarEvent {

  public DateTimeOffset Start { get; set; }

  public DateTimeOffset? End { get; set; }

  public bool AllDay { get; set; }

}

I basically need to check the following:

Does any part of the event's date range fall within the visible range emitted from the calendar - if so, show it.

If it's an AllDay event, does the start date fall within the view.

Pseudo Example:

var rep = context.GetRepository<Event>();

events = rep.Get().Where(e => /* need help here */).AsQueryable();

asked Nov 23 '18 at 22:05

user1447679

1,31151746

I would change AllDay as read-only and the get method as return End == null. It kinda simplifies it and you don't need to assign it every time you create one. Assuming you have control over it

– sertsedat
Nov 23 '18 at 22:35

@sertsedat good call

– user1447679
Nov 23 '18 at 22:37

add a comment |

I'm implementing the server side code to fetch events for fullcalendar.io.

There are two scenarios:

Event has a start and end date

Event has a start date, and it's set to all day

Model:

public Class CalendarEvent {

  public DateTimeOffset Start { get; set; }

  public DateTimeOffset? End { get; set; }

  public bool AllDay { get; set; }

}

I basically need to check the following:

Does any part of the event's date range fall within the visible range emitted from the calendar - if so, show it.

If it's an AllDay event, does the start date fall within the view.

Pseudo Example:

var rep = context.GetRepository<Event>();

events = rep.Get().Where(e => /* need help here */).AsQueryable();

asked Nov 23 '18 at 22:05

user1447679

1,31151746

I'm implementing the server side code to fetch events for fullcalendar.io.

There are two scenarios:

Event has a start and end date

Event has a start date, and it's set to all day

Model:

public Class CalendarEvent {

  public DateTimeOffset Start { get; set; }

  public DateTimeOffset? End { get; set; }

  public bool AllDay { get; set; }

}

I basically need to check the following:

Does any part of the event's date range fall within the visible range emitted from the calendar - if so, show it.

If it's an AllDay event, does the start date fall within the view.

Pseudo Example:

var rep = context.GetRepository<Event>();

events = rep.Get().Where(e => /* need help here */).AsQueryable();

c# linq fullcalendar

asked Nov 23 '18 at 22:05

user1447679

1,31151746

asked Nov 23 '18 at 22:05

user1447679

1,31151746

asked Nov 23 '18 at 22:05

user1447679

1,31151746

asked Nov 23 '18 at 22:05

user1447679

1,31151746

asked Nov 23 '18 at 22:05

user1447679

1,31151746

I would change AllDay as read-only and the get method as return End == null. It kinda simplifies it and you don't need to assign it every time you create one. Assuming you have control over it

– sertsedat
Nov 23 '18 at 22:35

@sertsedat good call

– user1447679
Nov 23 '18 at 22:37

add a comment |

I would change AllDay as read-only and the get method as return End == null. It kinda simplifies it and you don't need to assign it every time you create one. Assuming you have control over it

– sertsedat
Nov 23 '18 at 22:35

@sertsedat good call

– user1447679
Nov 23 '18 at 22:37

I would change AllDay as read-only and the get method as return End == null. It kinda simplifies it and you don't need to assign it every time you create one. Assuming you have control over it

– sertsedat
Nov 23 '18 at 22:35

@sertsedat good call

– user1447679
Nov 23 '18 at 22:37

add a comment |

1 Answer
1

active

oldest

votes

I like this one (overlapping dates)! In general the formula is:

var dateFrom = ;// start of week

var dateTo = ; // end of week



var events = rep.Get()

    .Where(e => e.Start <= dateTo && e.End >= dateFrom)

    .AsQueryable();

Because you need things contained by the range, starting in the range and extending out, starting before the range and ending in, and starting before and ending after the range.

But if you need to handle a nullable .End then maybe more like:

var dateFrom = ;// start of week

var dateTo = ; // end of week



var events = rep.Get()

    .Where(e => e.Start <= dateTo && (e.End ?? e.Start) >= dateFrom)

    .AsQueryable();

(very) rudimentary mockup to help visualize:

Rudimentary mockup

edited Nov 23 '18 at 22:31

answered Nov 23 '18 at 22:19

Jonathan

2,70921630

2

You can simplify the null case - and hence all cases - down to .Where(e => e.Start <= dateTo && (e.End ?? e.Start) >= dateFrom)

– sellotape
Nov 23 '18 at 22:29

Props for the drawing :)

– user1447679
Nov 23 '18 at 22:41

add a comment |

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1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

I like this one (overlapping dates)! In general the formula is:

var dateFrom = ;// start of week

var dateTo = ; // end of week



var events = rep.Get()

    .Where(e => e.Start <= dateTo && e.End >= dateFrom)

    .AsQueryable();

Because you need things contained by the range, starting in the range and extending out, starting before the range and ending in, and starting before and ending after the range.

But if you need to handle a nullable .End then maybe more like:

var dateFrom = ;// start of week

var dateTo = ; // end of week



var events = rep.Get()

    .Where(e => e.Start <= dateTo && (e.End ?? e.Start) >= dateFrom)

    .AsQueryable();

(very) rudimentary mockup to help visualize:

Rudimentary mockup

edited Nov 23 '18 at 22:31

answered Nov 23 '18 at 22:19

Jonathan

2,70921630

2

You can simplify the null case - and hence all cases - down to .Where(e => e.Start <= dateTo && (e.End ?? e.Start) >= dateFrom)

– sellotape
Nov 23 '18 at 22:29

Props for the drawing :)

– user1447679
Nov 23 '18 at 22:41

add a comment |

I like this one (overlapping dates)! In general the formula is:

var dateFrom = ;// start of week

var dateTo = ; // end of week



var events = rep.Get()

    .Where(e => e.Start <= dateTo && e.End >= dateFrom)

    .AsQueryable();

Because you need things contained by the range, starting in the range and extending out, starting before the range and ending in, and starting before and ending after the range.

But if you need to handle a nullable .End then maybe more like:

var dateFrom = ;// start of week

var dateTo = ; // end of week



var events = rep.Get()

    .Where(e => e.Start <= dateTo && (e.End ?? e.Start) >= dateFrom)

    .AsQueryable();

(very) rudimentary mockup to help visualize:

Rudimentary mockup

edited Nov 23 '18 at 22:31

answered Nov 23 '18 at 22:19

Jonathan

2,70921630

2

You can simplify the null case - and hence all cases - down to .Where(e => e.Start <= dateTo && (e.End ?? e.Start) >= dateFrom)

– sellotape
Nov 23 '18 at 22:29

Props for the drawing :)

– user1447679
Nov 23 '18 at 22:41

add a comment |

I like this one (overlapping dates)! In general the formula is:

var dateFrom = ;// start of week

var dateTo = ; // end of week



var events = rep.Get()

    .Where(e => e.Start <= dateTo && e.End >= dateFrom)

    .AsQueryable();

Because you need things contained by the range, starting in the range and extending out, starting before the range and ending in, and starting before and ending after the range.

But if you need to handle a nullable .End then maybe more like:

var dateFrom = ;// start of week

var dateTo = ; // end of week



var events = rep.Get()

    .Where(e => e.Start <= dateTo && (e.End ?? e.Start) >= dateFrom)

    .AsQueryable();

(very) rudimentary mockup to help visualize:

Rudimentary mockup

edited Nov 23 '18 at 22:31

answered Nov 23 '18 at 22:19

Jonathan

2,70921630

I like this one (overlapping dates)! In general the formula is:

var dateFrom = ;// start of week

var dateTo = ; // end of week



var events = rep.Get()

    .Where(e => e.Start <= dateTo && e.End >= dateFrom)

    .AsQueryable();

Because you need things contained by the range, starting in the range and extending out, starting before the range and ending in, and starting before and ending after the range.

But if you need to handle a nullable .End then maybe more like:

var dateFrom = ;// start of week

var dateTo = ; // end of week



var events = rep.Get()

    .Where(e => e.Start <= dateTo && (e.End ?? e.Start) >= dateFrom)

    .AsQueryable();

(very) rudimentary mockup to help visualize:

Rudimentary mockup

edited Nov 23 '18 at 22:31

answered Nov 23 '18 at 22:19

Jonathan

2,70921630

edited Nov 23 '18 at 22:31

answered Nov 23 '18 at 22:19

Jonathan

2,70921630

answered Nov 23 '18 at 22:19

Jonathan

2,70921630

answered Nov 23 '18 at 22:19

Jonathan

2,70921630

2

You can simplify the null case - and hence all cases - down to .Where(e => e.Start <= dateTo && (e.End ?? e.Start) >= dateFrom)

– sellotape
Nov 23 '18 at 22:29

Props for the drawing :)

– user1447679
Nov 23 '18 at 22:41

add a comment |

2

You can simplify the null case - and hence all cases - down to .Where(e => e.Start <= dateTo && (e.End ?? e.Start) >= dateFrom)

– sellotape
Nov 23 '18 at 22:29

Props for the drawing :)

– user1447679
Nov 23 '18 at 22:41

You can simplify the null case - and hence all cases - down to .Where(e => e.Start <= dateTo && (e.End ?? e.Start) >= dateFrom)

– sellotape
Nov 23 '18 at 22:29

Props for the drawing :)

– user1447679
Nov 23 '18 at 22:41

add a comment |

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