from django.shortcuts import render, redirect
from app01 import models

from app01.utils.pagination import Pagination
from app01.utils.form import UserModelForm

def movie_list(request):
    data_dict = {}
    search_data = request.GET.get('q', "")
    if search_data:
        data_dict["name__contains"] = search_data

    queryset = models.Movie.objects.filter(**data_dict)

    page_object = Pagination(request, queryset, page_size=6)
    context = {
        "queryset": page_object.page_queryset,
        "page_string": page_object.html(),
        'search_data': search_data,
    }
    return render(request,'movie_list.html',context)


def movie_add(request):
    if request.method =='GET':
        form = MovieModelForm()
        return render(request,'movie_add.html',{'form':form})
    form = MovieModelForm(data = request.POST)
    if form.is_valid():
        form.save()
        return redirect('/movie/list/')

    return render(request,'movie_add.html',{'form':form})


def movie_edit(request,nid):
    row_object = models.Movie.objects.filter(id=nid).first()

    if request.method == "GET":
        # 根据ID去数据库获取要编辑的那一行数据（对象）
        form = MovieModelForm(instance=row_object)
        return render(request, 'movie_add.html', {'form': form})

    form = MovieModelForm(data=request.POST, instance=row_object)
    if form.is_valid():
        # 默认保存的是用户输入的所有数据，如果想要再用户输入以外增加一点值
        # form.instance.字段名 = 值
        form.save()
        return redirect('/movie/list/')
    return render(request,'movie_edit.html',{'form':form})

def movie_delete(request, nid):
    models.Movie.objects.filter(id=nid).delete()
    return redirect('/movie/list/')